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Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
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1

A Control Strategy for Off-Grid Solar Photovoltaic Power System Based on MPPT Algorithm  

Science Conference Proceedings (OSTI)

Off-grid solar photovoltaic (PV) power system characteristics are used widely in many far-away areas during theses years. The new control strategy employs Maximum Power Point Tracking (MPPT) algorithm. The maximum power point tracker is a high efficiency ... Keywords: off-grid solar photovoltaic power system, maximum power point tracking algorithm, perturbation and observation control method

Tianjian Wang; Xia Dang; Dong Liu

2012-10-01T23:59:59.000Z

2

COMPRESSED-AIR ENERGY STORAGE SYSTEMS FOR STAND-ALONE OFF-GRID PHOTOVOLTAIC MODULES  

E-Print Network (OSTI)

-storage materials, flywheels, pumped hydro (PH), superconducting magnetic energy storage (SMES) and compressed airCOMPRESSED-AIR ENERGY STORAGE SYSTEMS FOR STAND-ALONE OFF-GRID PHOTOVOLTAIC MODULES Dominique, USA ABSTRACT In this work, a low-cost, low-volume, low-maintenance, small-scale compressed-air energy

Deymier, Pierre

3

PV Testing Group Photovoltaic Cell Data Compilation  

E-Print Network (OSTI)

PV Testing Group Photovoltaic Cell Data Compilation National Renewable Energy Laboratory 4/2/2010 ______________________________________ Page 1 *NREL Photovoltaic Cell Data Compilation Calibration Conducted For: Kaitlyn VanSant (for Solasta Contact: Paul Ciszek (303) 384-6647 Paul.Ciszek@nrel.gov #12;PV Testing Group Photovoltaic Cell Data

Burns, Michael J.

4

NREL: Photovoltaics Research - PV News  

NLE Websites -- All DOE Office Websites (Extended Search)

PV News PV News The National Renewable Energy Laboratory Photovoltaic (PV) Research Program highlights latest research and news accomplishments from the laboratory on this page. Subscribe to the RSS feed RSS . Learn about RSS. November 8, 2013 New Solar Cell Is More Efficient, Less Costly Innovation by NREL and First Solar acquisition TetraSun wins a 2013 R&D 100 Award. November 6, 2013 NREL's Energy Systems Integration Facility Garners LEED® Platinum The Energy Systems Integration Facility (ESIF) on the campus of the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) in Golden, Colo., has earned a LEED® Platinum designation for new construction from the U.S. Green Building Council (USGBC), a non-profit organization dedicated to sustainable building design and construction.

5

Arima Photovoltaic And Optical Corp Arima PV | Open Energy Information  

Open Energy Info (EERE)

Photovoltaic And Optical Corp Arima PV Jump to: navigation, search Name Arima Photovoltaic And Optical Corp (Arima PV) Place Taipei, Taiwan Product Once a maker of computers, the...

6

Photovoltaic (PV) Pricing Trends: Historical, Recent, and Near...  

NLE Websites -- All DOE Office Websites (Extended Search)

Photovoltaic (PV) Pricing Trends: Historical, Recent, and Near-Term Projections Title Photovoltaic (PV) Pricing Trends: Historical, Recent, and Near-Term Projections Publication...

7

New York City - Property Tax Abatement for Photovoltaic (PV)...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Property Tax Abatement for Photovoltaic (PV) Equipment Expenditures New York City - Property Tax Abatement for Photovoltaic (PV) Equipment Expenditures Eligibility Commercial...

8

Direct Use of Solar Photovoltaic (PV) Energy  

Science Conference Proceedings (OSTI)

PV-DC refers to the direct use of photovoltaic (PV) energy in an appliance or other equipment without a grid connection. Most (over 90) of the new deployments of PV solar panels connect to the ac electric grid and do not use dc energy directly. These grid-connected PV systems use an electronic inverter to convert the dc array output to ac power for interfacing with the grid. However, with double-digit growth in all types of PV applications, the direct use of solar for powering end-use loads needs to be m...

2010-12-31T23:59:59.000Z

9

Pioneer Valley Photovoltaics Cooperative aka PV Squared | Open Energy  

Open Energy Info (EERE)

Photovoltaics Cooperative aka PV Squared Photovoltaics Cooperative aka PV Squared Jump to: navigation, search Name Pioneer Valley Photovoltaics Cooperative (aka PV Squared) Place New Britain, Connecticut Zip 6051 Sector Solar Product Solar PV system installer. References Pioneer Valley Photovoltaics Cooperative (aka PV Squared)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Pioneer Valley Photovoltaics Cooperative (aka PV Squared) is a company located in New Britain, Connecticut . References ↑ "Pioneer Valley Photovoltaics Cooperative (aka PV Squared)" Retrieved from "http://en.openei.org/w/index.php?title=Pioneer_Valley_Photovoltaics_Cooperative_aka_PV_Squared&oldid=349764"

10

Definition: PV array | Open Energy Information  

Open Energy Info (EERE)

PV array PV array Jump to: navigation, search Dictionary.png PV array An interconnected system of PV modules that function as a single electricity-producing unit. In smaller systems, an array can consist of a single module.[1][2] View on Wikipedia Wikipedia Definition A Photovoltaic system (informally, PV system) is an arrangement of components designed to supply usable electric power for a variety of purposes, using the Sun (or, less commonly, other light sources) as the power source. PV systems may be built in various configurations: Off-grid without battery (Array-direct) Off-grid with battery storage for DC-only appliances Off-grid with battery storage for AC & DC appliances Grid-tie without battery Grid-tie with battery storage A photovoltaic array (also called a solar array) consists of multiple photovoltaic modules, casually

11

Optimization of Electric Power Systems for Off-Grid Domestic Applications: An Argument for Wind/Photovoltaic Hybrids  

SciTech Connect

The purpose of this research was to determine the optimal configuration of home power systems relevant to different regions in the United States. The hypothesis was that, regardless of region, the optimal system would be a hybrid incorporating wind technology, versus a photovoltaic hybrid system without the use of wind technology. The method used in this research was HOMER, the Hybrid Optimization Model for Electric Renewables. HOMER is a computer program that optimizes electrical configurations under user-defined circumstances. According to HOMER, the optimal system for the four regions studied (Kansas, Massachusetts, Oregon, and Arizona) was a hybrid incorporating wind technology. The cost differences between these regions, however, were dependent upon regional renewable resources. Future studies will be necessary, as it is difficult to estimate meteorological impacts for other regions.

Jennings, W.; Green, J.

2001-01-01T23:59:59.000Z

12

Product Quality Assurance for Off-Grid Lighting in Africa  

SciTech Connect

Although the emergence of markets for high efficiency off-grid lighting technologies holds promise, realizing the potential of this opportunity on a long-term, sustainable basis requires careful attention to issues of product quality, consumer protection, and the potential for significant 'market spoiling', in anticipation of increases of sales of low cost, low performance off-grid lighting products. The goal of the Lighting Africa quality assurance workshop was to articulate strategies to mitigate the dangers of market spoiling and to explore ways to protect consumers from misleading advertising for sales of inferior, off-grid lighting products in the context of Lighting Africa's overarching objective to support the industry in developing a robust off-grid lighting market in Africa. The workshop resulted in the identification of two strategic approaches for meeting Lighting Africa quality assurance programmatic needs. The first strategy is intended to meet a short-term programmatic need for quality associated with requests for lighting products by bulk procurement agents, such as in a World Bank-financed project. The development of procurement specifications and test procedures that could be used in a quality/usability screening method in order to provide guidance for forthcoming large volume purchases emerged as the best solution to meet this need. Such approaches are used in World Bank-financed solar home systems (SHSs) projects in Bangladesh, Sri Lanka, and China, among others. However, unlike the SHSs which have multiple balance-of-system (BOS) components warranting the need for an array of specifications for individual components, stand alone lighting systems require specifications that are amenable to individual light points. To test this approach, Lighting Africa elected to use the technical specifications issued by the Photovoltaic Global Approval Program for solar lanterns that use CFL bulbs (PVRS11A) as the basis of qualifying such products. A contract has been competitively awarded to the Global Approval Program for Photovoltaics (PV GAP) under the Lighting Africa Program to select and test ten solar lantern product models. Lantern selection will be determined based on a number of criteria, among them, the ability to provide a daily duty cycle of at least 3 hours of light, the number of days of autonomy of battery, the volume of sales (especially in Africa), and whether or not the manufacturing facility is ISO 9000 certified. Those that are confirmed as meeting the specifications may be eligible to receive a PVGAP quality seal. The work is being carried out in partnership with the Photovoltaic and Wind Quality Test Center in Beijing, China and TUV Rhineland in Koeln, Germany. As off-grid LED-based stand-alone lighting products is in a nascent stage of development compared to CFL-based lanterns, Lighting Africa will support the development of a 'Quality Screening' approach to selecting LED lighting, in order not to delay consumers benefiting from such advances. The screening methodology could be used by procurement agencies to qualify LED lighting products for bulk or programmatic procurements. The main elements of this work comprises of developing a procurement specification and test procedure for undertaking a 'quick' quality/usability screening to be used for procuring LED lights and to test up to 30 LED-based lights to screen products that meet the requirement. The second strategy is intended to meet a longer-term need associated with creating a self-sustaining product quality assurance program that will effectively protect the African consumer, prevent significant market spoiling, adapt with expected technological advancements over the long-term--in other words, give consumers the ability to detect quality products and the information needed to find products that meet their specific needs from among the myriad of lighting products that become available commercially. Workshop discussions and the discussions evolving from the workshop led the Lighting Africa team to opt for an approach similar to that of th

World Bank; Mills, Evan; Mills, Evan

2008-07-13T23:59:59.000Z

13

Solar Photovoltaics development -Status and perspectives  

E-Print Network (OSTI)

Solar Photovoltaics development - Status and perspectives Jørgen Fenhann Risø National Laboratory for the development of solar photovoltaics, contributing to the Macro Task E1 on production cost for fusion.S. with 53 MWp followed by Japan and EU. Until now off-grid installation have dominated the solar PV market

14

Photovoltaics  

Energy.gov (U.S. Department of Energy (DOE))

Photovoltaic (PV) materials and devices convert sunlight into electrical energy, and PV cells are commonly known as solar cells. Photovoltaics can literally be translated as light-electricity.

15

New York City - Property Tax Abatement for Photovoltaic (PV) Equipment  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Property Tax Abatement for Photovoltaic (PV) Property Tax Abatement for Photovoltaic (PV) Equipment Expenditures New York City - Property Tax Abatement for Photovoltaic (PV) Equipment Expenditures < Back Eligibility Commercial Industrial Institutional Multi-Family Residential Nonprofit Residential Schools Savings Category Solar Buying & Making Electricity Maximum Rebate $62,500 annually or the amount of real property taxes owed during a year Program Info Start Date 08/05/2008 State New York Program Type Property Tax Incentive Rebate Amount Installed from August 5, 2008 to December 31, 2010: 8.75% of system expenditures per year for 4 years (total of 35%); Installed from January 1, 2011 to December 31, 2012: 5% of system expenditures per year for 4 years (total of 20%); Installed from January 1, 2013 to December 31, 2014: 2.5% of system

16

205 kW Photovoltaic (PV) System Installed on the U.S. Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

205 kW Photovoltaic (PV) System Installed on the U.S. Department of Energy's Forrestal Building 205 kW Photovoltaic (PV) System Installed on the U.S. Department of Energy's...

17

Polysilicon in Photovoltaics: Market Conditions & Competing PV ...  

Science Conference Proceedings (OSTI)

That data, along with projections regarding the growth in installed PV capacity, are used to predict demand the solar industry will place on materials used in...

18

Step-Stress Accelerated Degradation Testing (SSADT) for Photovoltaic (PV) Devices and Cells (Presentation)  

DOE Green Energy (OSTI)

Presentation on step-stress accelerated degradation testing (SSADT) for photovoltaics (PV). Developed are a step-stress degradation test (SSADT) for PV reliability tests and a lifetime prediction model for PV products.

Lee, J.; Elmore, R.; Suh, C.; Jones, W.

2010-10-01T23:59:59.000Z

19

Keywords: Photovoltaic System, fault-tolerance, recon-figurable PV panel  

E-Print Network (OSTI)

1 Keywords: Photovoltaic System, fault-tolerance, recon- figurable PV panel Photovoltaic (PV plants, and satellites. The output power of a PV cell (also called solar cell) is dependent on the solar irradiance level and temperature. Figure 1 shows PV cell output current-voltage and power

Pedram, Massoud

20

Off-grid Power for Small Communities with Renewable Energy Sources in Rural Guatemalan Villages  

Science Conference Proceedings (OSTI)

Abstract--This paper describes the process used to plan, design, and implement an off-grid electrical system for a village with less than 50 homes in rural Guatemala. The community has a small school, community center, community kitchen, and 43 homes/families. ... Keywords: photovoltaic, hydroelectric, Guatemala, battery, EWB, Engineers Without Borders, solar energy, microhydro, off-grid.

Eugene D. Moe; Andrea P. Moe

2011-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Interline photovoltaic (I-PV) power plants for voltage unbalance compensation  

E-Print Network (OSTI)

This paper proposes a stationary-frame control method for voltage unbalance compensation using Interline Photovoltaic (I-PV) power system. I-PV power systems are controlled to compensate voltage unbalance autonomously. The ...

Moawwad, Ahmed

22

Interline Photovoltaic (I-PV) power system - A novel concept of power flow control and management  

E-Print Network (OSTI)

This paper presents a new system configuration for a large-scale Photovoltaic (PV) power system with multi-line transmission/distribution networks. A PV power plant is reconfigured in a way that two adjacent power system ...

Khadkikar, Vinod

23

PV Standards Work: Photovoltaic System and Component Certification, Test Facility Accreditation, and Solar Photovoltaic Energy Systems International Standards  

DOE Green Energy (OSTI)

This paper discusses efforts led by two companies (PowerMark Corporation and Sunset Technologies Inc.) to support both U.S. domestic and international photovoltaic (PV) system and component certification and test facility accreditation programs and the operation of the International Electrotechnical Commission (IEC) Technical Committee 82 (TC-82) Photovoltaic Energy Systems. International and national PV certification/accreditation programs are successfully facilitating entry of only the highest quality PV products into the marketplace. Standards also continue to be a cornerstone for assuring global PV product conformity assessment, reducing non-tariff trade barriers, and ultimately improving PV products while lowering cost.

Basso, T. S.; Chalmers, S.; Barikmo, H. O.

2005-11-01T23:59:59.000Z

24

Lessons Learned from the Photovoltaic Manufacturing Technology/PV Manufacturing R&D and Thin Film PV Partnership Projects  

DOE Green Energy (OSTI)

As the U.S. Department of Energy's (DOE's) Solar Energy Technologies Program initiates new cost-shared solar energy R&D under the Solar America Initiative (SAI), it is useful to analyze the experience gained from cost-shared R&D projects that have been funded through the program to date. This report summarizes lessons learned from two DOE-sponsored photovoltaic (PV) projects: the Photovoltaic Manufacturing Technology/PV Manufacturing R&D (PVMaT/PVMR&D) project and the Thin-Film PV Partnership project. During the past 10-15 years, these two projects have invested roughly $330 million of government resources in cost-shared R&D and leveraged another $190 million in private-sector PV R&D investments. Following a description of key findings and brief descriptions of the PVMaT/PVMR&D and Thin-Film PV Partnership projects, this report presents lessons learned from the projects.

Margolis, R.; Mitchell, R.; Zweibel, K.

2006-09-01T23:59:59.000Z

25

Final Technical Report - Photovoltaics for You (PV4You) Program  

DOE Green Energy (OSTI)

In September 2000, the Interstate Renewable Energy Council (IREC) began its 5-year work on contract # DE-FGO3-00SF22116, the Photovoltaics for You (PV4You) Project. The objective was to develop and distribute information on photovoltaics and to educate key stakeholder groups including state government agencies, local government offices, consumer representative agencies, school officials and students, and Million Solar Roofs Partnerships. In addition, the project was to identify barriers to the deployment of photovoltaics and implement strategies to overcome them. Information dissemination and education was accomplished by publishing newsletters; creating a base of information, guides, and models on the www.irecusa.org and the www.millionsolarroofs.org web sites; convening workshops and seminars; engaging multiple stakeholders; and widening the solar network to include new consumers and decision makers. Two major web sites were maintained throughout the project cycle. The www.irecusa.org web site housed dedicated pages for Connecting to the Grid, Schools Going Solar, Community Outreach, and Certification & Training. The www.millionsolarroofs.org web site was created to serve the MSR Partnerships with news, interviews, key documents, and resource material. Through the course of this grant, the Interstate Renewable Energy Council has been supporting the Department of Energy?s solar energy program goals by providing the Department with expertise services for their network of city, state, and community stakeholders. IREC has been the leading force at the state and federal levels regarding net metering and interconnection policy for photovoltaic systems. The principal goal and benefit of the interconnection and net metering work is to lower both barriers and cost for the installation of PV. IREC typically plays a leadership role among small generator stakeholders and has come to be relied upon for its expertise by industry and regulators. IREC also took a leadership position in developing quality and competency standards for solar professionals and for training programs ? critical components to bring the solar industry into step with other recognized craft labor forces. IREC?s objective was to provide consumer assurances and assist the states and the solar industry in building a strong and qualified workforce. IREC?s Schools Going Solar Clearinghouse provided channels of information to educate students, teachers, parents and the community at large about the benefits of solar energy. Solar school projects enhance science and math education while creating an initial entry market for domestic PV. And, IREC?s community and outreach network got the right information out to capture the interest and met the needs of different audiences and reached groups that weren?t traditionally part of the solar community. IREC?s PV4You project was effective because it resulted in reduced costs through easier interconnection and better net metering agreements and by raising the competency standards for solar practitioners. The project provided ways to eliminate barriers and constraints by providing technical assistance, offering model agreements based on industry consensus that were used by state and local decision makers. And, the project increased public acceptance by providing information, news and guidelines for different audiences.

Weissman, J.M.; Sherwood, L.; Pulaski, J.; Cook, C.; Kalland, S.; Haynes, J.

2005-08-14T23:59:59.000Z

26

The comparison of three photovoltaic system designs using the photovoltaic reliability and performance model (PV-RPM).  

SciTech Connect

Most photovoltaic (PV) performance models currently available are designed to use irradiance and weather data and predict PV system output using a module or array performance model and an inverter model. While these models can give accurate results, they do so for an idealized system. That is, a system that does not experience component failures or outages. We have developed the Photovoltaic Reliability and Performance Model (PV-RPM) to more accurately model these PV systems by including a reliability component that simulates failures and repairs of the components of the system, as well as allow for the disruption of the system by external events such as lightning or grid disturbances. In addition, a financial component has also been included to help assess the profitability of a PV system.

Miller, Steven P.; Granata, Jennifer E.; Stein, Joshua S.

2012-12-01T23:59:59.000Z

27

Solar Photovoltaic Economic Development: Building and Growing a Local PV Industry, August 2011 (Book)  

DOE Green Energy (OSTI)

The U.S. photovoltaic (PV) industry is forecast to grow, and it represents an opportunity for economic development and job creation in communities throughout the United States. This report helps U.S. cities evaluate economic opportunities in the PV industry. It serves as a guide for local economic development offices in evaluating their community?s competitiveness in the solar PV industry, assessing the viability of solar PV development goals, and developing strategies for recruiting and retaining PV companies to their areas.

Not Available

2011-08-01T23:59:59.000Z

28

Photovoltaics for Buildings: Case Studies of High-Performance Buildings with PV  

SciTech Connect

Energy efficiency maximizes the value of photovoltaics (PV) in buildings systems. A fixed-sizre PV system will offset a much larger part of the electrical load in an energy-efficient building than in a building whose energy design has not been optimized.

Hayter, S. J.; Torcellini, P. A.

2000-01-01T23:59:59.000Z

29

High Penetration of Photovoltaic (PV) Systems into the Distribution Grid, Workshop Report, February 24-25, 2009  

DOE Green Energy (OSTI)

Outcomes from the EERE Solar Energy Technologies Program workshop on high penetration of photovoltaic (PV) systems into the distribution grid, Feb. 24-25, 2009, Ontario, Calif.

Not Available

2009-06-01T23:59:59.000Z

30

Measured Off-Grid LED Lighting System Performance  

E-Print Network (OSTI)

Market in Western Kenya: LED Alternatives and Consumerfor Emerging Off-grid White-LED Illumination Systems forReport #4 Measured Off-Grid LED Lighting System Performance

Granderson, Jessica

2009-01-01T23:59:59.000Z

31

Building Energy Software Tools Directory: PV*SOL  

NLE Websites -- All DOE Office Websites (Extended Search)

PV*SOL PV*SOL PV*SOL logo. PV*SOL Pro is a program for the design and simulation of grid-connected and off-grid photovoltaic systems. You can create your system using a wide range of modules (including thin-film and crystalline) and the program determines the size of the system with the roof layout tool. After testing all the relevant physical parameters, the program automatically selects the inverter and PV array configuration. This dynamic simulation program was developed for engineers, designers, installers, roofing specialists, and electrical contractors or building technicians. Screen Shots Keywords photovoltaic systems simulation, planning and design software, grid-connected systems, stand-alone systems Validation/Testing N/A Expertise Required No special expertise or training needed.

32

NREL's PV Incubator: Where Solar Photovoltaic Records Go to be Broken |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

NREL's PV Incubator: Where Solar Photovoltaic Records Go to be NREL's PV Incubator: Where Solar Photovoltaic Records Go to be Broken NREL's PV Incubator: Where Solar Photovoltaic Records Go to be Broken June 28, 2011 - 11:44am Addthis NREL Principal Engineer Keith Emery prepares to load three-junction concentrator cells into NREL's
 High-Intensity Pulse Solar Simulator to test for efficiency. | Department of Energy Photo | Courtesy of National Renewable Energy Laboratory | Photo by Dennis Schroeder | Public Domain | NREL Principal Engineer Keith Emery prepares to load three-junction concentrator cells into NREL's
 High-Intensity Pulse Solar Simulator to test for efficiency. | Department of Energy Photo | Courtesy of National Renewable Energy Laboratory | Photo by Dennis Schroeder | Public Domain | Minh Le Minh Le

33

PHOTOVOLTAIC POWER SYSTEMS PROGRAMME Pico Solar PV Systems for Remote  

E-Print Network (OSTI)

A new generation of small PV systems for lighting and communication Report IEA-PVPS T9-12:2012INTERNATIONAL ENERGY AGENCY

unknown authors

2013-01-01T23:59:59.000Z

34

NREL's PV Incubator: Where Solar Photovoltaic Records Go to be...  

NLE Websites -- All DOE Office Websites (Extended Search)

has energized our entire company." Solar Junction, San Jose, California - Concentrated photovoltaic (CPV) manufacturer Solar Junction's multi-junction solar cell recently...

35

The inverter is a major component of photovoltaic (PV) systems either autonomous or grid connected. It affects the  

E-Print Network (OSTI)

Solar Power ........................1 1.1 Global Installed PV Capacity ........................................................................................................................................18 2 Industry Trends, Photovoltaic and Concentrating Solar Power ...........................21 2.1 PV.3.4.5 Quality Assurance and Certification for Solar PV Installation.................46 2.3.5 References

Oregon, University of

36

Photovoltaic Performance and Reliability Database: A Gateway to Experimental Data Monitoring Projects for PV at the Florida Solar Energy Center  

DOE Data Explorer (OSTI)

This site is the gateway to experimental data monitoring projects for photovoltaic (PV) at the Florida Solar Energy Center. The website and the database were designed to facilitate and standardize the processes for archiving, analyzing and accessing data collected from dozens of operational PV systems and test facilities monitored by FSEC's Photovoltaics and Distributed Generation Division. [copied from http://www.fsec.ucf.edu/en/research/photovoltaics/data_monitoring/index.htm

37

Embodied Energy and Off-Grid Lighting  

Science Conference Proceedings (OSTI)

The greenhouse gas (GHG) emissions from fuel-based lighting are substantial given the paltry levels of lighting service provided to users, leading to a great opportunity for GHG mitigation byencouraging the switch from fuel-based to rechargeable LED lighting. However, as with most new energy technology, switching to efficient lighting requires an up-front investment of energy(and GHGs) embedded in the manufacture of replacement components. We studied a population of off-grid lighting users in 2008-2009 in Kenya who were given the opportunity to adopt LEDlighting. Based on their use patterns with the LED lights and the levels of kerosene offset we observed, we found that the embodied energy of the LED lamp was"paid for" in only one month for grid charged products and two months for solar charged products. Furthermore, the energyreturn-on investment-ratio (energy produced or offset over the product's service life divided by energy embedded) for off-grid LED lighting ranges from 12 to 24, which is on par with on-gridsolar and large-scale wind energy. We also found that the energy embodied in the manufacture of a typical hurricane lantern is about one-half to one-sixth of that embodied in the particular LEDlights that we evaluated, indicating that the energy payback time would be moderately faster if LEDs ultimately displace the production of kerosene lanterns. As LED products improve, weanticipate longer service lives and more successful displacement of kerosene lighting, both of which will speed the already rapid recovery of embodied energy in these products. Our studyprovides a detailed appendix with embodied energy values for a variety of components used to construct off-grid LED lighting, which can be used to analyze other products.

Alstone, Peter; Mills, Evan; Jacobson, Arne

2011-01-25T23:59:59.000Z

38

Residential, Commercial, and Utility-Scale Photovoltaic (PV)...  

NLE Websites -- All DOE Office Websites (Extended Search)

beginning. Reducing those initial capital costs is crucial to reducing the cost of solar electricity. In addition to module price, many factors contribute to the price of a PV...

39

Making Photovoltaics competitive in the US: A comparison of residential PV prices in  

E-Print Network (OSTI)

in this table were compiled, solar photovoltaic (PV) plant costs have continued to decline. Capacity factors can potential solar energy sites located along the CAP for inclusion in the RDEP draft EIS. · USBR is actively................................................................................................ 10 3.2 Solar

Kammen, Daniel M.

40

NREL: Photovoltaics Research - 2014 PV Module Reliability Workshop  

NLE Websites -- All DOE Office Websites (Extended Search)

later. The 2014 Photovoltaic Module Reliability Workshop (PVMRW) will be held in Golden, Colorado, February 25-27. As in past years, all PVMRW participants will be required to...

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Stand-alone photovoltaic (PV) powered electrochromic window  

DOE Patents (OSTI)

A variable transmittance double pane window includes an electrochromic material that has been deposited on one pane of the window in conjunction with an array of photovoltaic cells deposited along an edge of the pane to produce the required electric power necessary to vary the effective transmittance of the window. A battery is placed in a parallel fashion to the array of photovoltaic cells to allow the user the ability to manually override the system when a desired transmittance is desired. 11 figures.

Benson, D.K.; Crandall, R.S.; Deb, S.K.; Stone, J.L.

1995-01-24T23:59:59.000Z

42

Stand-alone photovoltaic (PV) powered electrochromic window  

DOE Patents (OSTI)

A variable transmittance double pane window includes an electrochromic material that has been deposited on one pane of the window in conjunction with an array of photovoltaic cells deposited along an edge of the pane to produce the required electric power necessary to vary the effective transmittance of the window. A battery is placed in a parallel fashion to the array of photovoltaic cells to allow the user the ability to manually override the system when a desired transmittance is desired.

Benson, David K. (Golden, CO); Crandall, Richard S. (Boulder, CO); Deb, Satyendra K. (Boulder, CO); Stone, Jack L. (Lakewood, CO)

1995-01-01T23:59:59.000Z

43

Codes, standards, and PV power systems. A 1996 status report  

SciTech Connect

As photovoltaic (PV) electrical power systems gain increasing acceptance for both off-grid and utility-interactive applications, the safety, durability, and performance of these systems gains in importance. Local and state jurisdictions in many areas of the country require that all electrical power systems be installed in compliance with the requirements of the National Electrical Code{reg_sign} (NEC{reg_sign}). Utilities and governmental agencies are now requiring that PV installations and components also meet a number of Institute of Electrical and Electronic Engineers (IEEE) standards. PV installers are working more closely with licensed electricians and electrical contractors who are familiar with existing local codes and installation practices. PV manufacturers, utilities, balance of systems manufacturers, and standards representatives have come together to address safety and code related issues for future PV installations. This paper addresses why compliance with the accepted codes and standards is needed and how it is being achieved.

Wiles, J

1996-06-01T23:59:59.000Z

44

PV-TONS: A photovoltaic technology ontology system for the design of PV-systems  

Science Conference Proceedings (OSTI)

The impacts of climate change, the increasing demand for energy and the diminishing fossil fuel resources have resulted in the development and use of a large number of renewable energy technologies in building development. These technologies are generating ... Keywords: Climate change, Ontology, PV-system, Renewable energy, Semantic Web

F. H. Abanda; J. H. M. Tah; D. Duce

2013-04-01T23:59:59.000Z

45

Hybrid photovoltaic/thermal (PV/T) solar systems simulation with Simulink/Matlab  

Science Conference Proceedings (OSTI)

The purpose of this work consists in thermodynamic modeling of hybrid photovoltaic-thermal (PV/T) solar systems, pursuing a modular strategy approach provided by Simulink/Matlab. PV/T solar systems are a recently emerging solar technology that allows for the simultaneous conversion of solar energy into both electricity and heat. This type of technology present some interesting advantages over the conventional ''side-by-side'' thermal and PV solar systems, such as higher combined electrical/thermal energy outputs per unit area, and a more uniform and aesthetical pleasant roof area. Despite the fact that early research on PV/T systems can be traced back to the seventies, only recently it has gained a renewed impetus. In this work, parametric studies and annual transient simulations of PV/T systems are undertaken in Simulink/Matlab. The obtained results show an average annual solar fraction of 67%, and a global overall efficiency of 24% (i.e. 15% thermal and 9% electrical), for a typical four-person single-family residence in Lisbon, with p-Si cells, and a collector area of 6 m{sup 2}. A sensitivity analysis performed on the PV/T collector suggests that the most important variable that should be addressed to improve thermal performance is the photovoltaic (PV) module emittance. Based on those results, some additional improvements are proposed, such as the use of vacuum, or a noble gas at low-pressure, to allow for the removal of PV cells encapsulation without air oxidation and degradation, and thus reducing the PV module emittance. Preliminary results show that this option allows for an 8% increase on optical thermal efficiency, and a substantial reduction of thermal losses, suggesting the possibility of working at higher fluid temperatures. The higher working temperatures negative effect in electrical efficiency was negligible, due to compensation by improved optical properties. The simulation results are compared with experimental data obtained from other authors and perform reasonably well. The Simulink modeling platform has been mainly used worldwide on simulation of control systems, digital signal processing and electric circuits, but there are very few examples of application to solar energy systems modeling. This work uses the modular environment of Simulink/Matlab to model individual PV/T system components, and to assemble the entire installation layout. The results show that the modular approach strategy provided by Matlab/Simulink environment is applicable to solar systems modeling, providing good code scalability, faster developing time, and simpler integration with external computational tools, when compared with traditional imperative-oriented programming languages. (author)

da Silva, R.M.; Fernandes, J.L.M. [Department of Mechanical Engineering, Instituto Superior Tecnico, Lisbon (Portugal)

2010-12-15T23:59:59.000Z

46

Photovoltaics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Photovoltaics Photovoltaics August 16, 2013 - 4:47pm Addthis Photovoltaic (PV) materials and devices convert sunlight into electrical energy, and PV cells are commonly known as...

47

Energy Basics: Photovoltaics  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Photovoltaics Photovoltaic (PV) materials and devices convert sunlight into electrical energy, and PV cells are commonly known as solar cells. Photovoltaics can literally be...

48

Measured Off-Grid LED Lighting System Performance  

E-Print Network (OSTI)

The Specter of Fuel-Based Lighting," Science 308:1263-1264.Mills. 2008. "Solid-State Lighting on a Shoestring Budget:The Economics of Off-Grid Lighting for Small Businesses in

Granderson, Jessica

2009-01-01T23:59:59.000Z

49

Technical and Economic Assessment of Off-grid, Mini-grid and...  

Open Energy Info (EERE)

Technical and Economic Assessment of Off-grid, Mini-grid and Grid Electrification Technologies Jump to: navigation, search Name Technical and Economic Assessment of Off-grid,...

50

Study of photovoltaic cost elements. Volume 4. Installation cost model for residential PV systems: users manual. Final report  

SciTech Connect

A quantitative methodology is presented for estimating installation costs of residential photovoltaic systems. The Installation Cost Model for Residential PV Systems is comprised of 144 estimating equations selectively exercised, based on user definition of the system. At the input stage, Residential PV systems can be fully described by 9 design option categories and 9 system specification categories. All assumptions have been validated with installers of solar thermal systems and with TB and A's Architects and Engineers Division. A discussion of the model is included as well as an example of its use with an 8 KW PV system for a Southwest All-Electric Residential design.

1981-07-01T23:59:59.000Z

51

Product Quality Assurance for Off-Grid Lighting in Africa  

E-Print Network (OSTI)

and stunting the market. Solar PV market experiences inabout 10-15 commonly available solar PV, DC recharging, gridoverview of available PV Solar Lanterns in the market (

Mills, Evan; World Bank

2008-01-01T23:59:59.000Z

52

Performance Analysis of Off-Grid Micro WECS in Harsh  

E-Print Network (OSTI)

wind power at off-grid sites · Motivated by high cost and environmental risk of traditional diesel Labrador · Originally powered solely by diesel generators with battery bank · Solar power introduced at sites in early 1990's · Wind power installation began in 2003 #12;4/19 Background · Now implementing

Bruneau, Steve

53

Off-grid Energy in Rural India: Policy Recommendations for  

E-Print Network (OSTI)

either benefit from energy access or supply their communities with energy services. #12;Lacayo 3 Timeline and domestic use, and small scale industry, as shown in table 1. Most of the energy needs in rural areasLacayo 1 Off-grid Energy in Rural India: Policy Recommendations for Effective UN Projects Antonio I

Mauzerall, Denise

54

Economic Analysis of a Brackish Water Photovoltaic-Operated (BWRO-PV) Desalination System: Preprint  

DOE Green Energy (OSTI)

The photovoltaic (PV)-powered reverse-osmosis (RO) desalination system is considered one of the most promising technologies in producing fresh water from both brackish and sea water, especially for small systems located in remote areas. We analyze the economic viability of a small PV-operated RO system with a capacity of 5 m3/day used to desalinate brackish water of 4000 ppm total dissolve solids, which is proposed to be installed in a remote area of the Babylon governorate in the middle of Iraq; this area possesses excellent insolation throughout the year. Our analysis predicts very good economic and environmental benefits of using this system. The lowest cost of fresh water achieved from using this system is US $3.98/ m3, which is very reasonable compared with the water cost reported by small-sized desalination plants installed in rural areas in other parts of the world. Our analysis shows that using this small system will prevent the release annually of 8,170 kg of CO2, 20.2 kg of CO, 2.23 kg of CH, 1.52 kg of particulate matter, 16.41 kg of SO2, and 180 kg of NOx.

Al-Karaghouli, A.; Kazmerski, L. L.

2010-10-01T23:59:59.000Z

55

Economics and performance of PV hybrid power systems: Three case studies  

DOE Green Energy (OSTI)

The Photovoltaic Systems Assistance Center (PVSAC) of Sandia National Laboratories (SNL) has been supporting the development and implementation of off-grid PV hybrid power systems for many years. Technical support has included: refining hardware; understanding system design techniques; obtaining operation and maintenance data; studying use of energy produced. As part of the program, the PVSAC has provided technical expertise on hybrid systems to many federal agencies including the National Park Service, the Forest Service, the Bureau of Land Management, and the Department of Defense. The goal of these partnerships has been to ensure that reliable and safe PV hybrid systems are specified and procured. At present, a critical review of performance and costs of several representative PV hybrid systems is underway. This paper presents a summary of the performance and economical analyses conducted on three PV hybrid systems.

Rosenthal, A.L.; Durand, S.J. [Southwest Technology Development Inst., Las Cruces, NM (United States); Thomas, M.G.; Post, H.N. [Sandia National Labs., Albuquerque, NM (United States)

1998-07-01T23:59:59.000Z

56

Building opportunities for photovoltaics in the U.S. Final report [PV BONUS  

DOE Green Energy (OSTI)

The objective of the North Carolina's PV Bonus Team was to develop and demonstrate a commercially viable, building-integrated, photovoltaic system that, in addition to providing electricity, would capture and effectively utilize the thermal energy produced by the photovoltaic array. This project objective was successfully achieved by designing, testing, constructing, and monitoring two roof integrated photovoltaic systems--one on a Applebee's Restaurant in Salisbury, North Carolina and the second on a Central Carolina Bank in Bessemer City, North Carolina. The goal of Innovative Design is to now use these successful demonstrations to facilitate entry of building integrated, pv/thermal systems into the marketplace. The strategy was to develop the two systems that could be utilized in future applications. Both systems were designed and then constructed at the North Carolina Solar Center at North Carolina State University. After extensive testing at the North Carolina Solar Center, the systems were moved to the actual construction sites and implemented. The Applebee's Restaurant system was designed to substitute for the roof assembly of a low sloping, south-facing sunspace roof that typically incorporated clay tile. After monitoring the installed system for one year it was determined that the 1.2 kilowatt (peak) system produces an average peak reduction of 1 kilowatt (rated peak is 1.7 kiloWatts), saves 1,529 kilowatt-hours of electricity, and offsets 11,776 kilowatt-hours of thermal energy savings used to pre-heat water. A DC fan connected directly to eight of the thirty-two amorphous modules moves air through air passages mounted on the backside of the modules and into a closed loop duct system to a heat exchanger. This heat exchanger is, in turn, connected to a pre-heat hot water tank that is used to heat the water for the restaurant. The Central Carolina Bank system was designed to substitute for the roof assembly of the drive-in window area of the bank. The design featured a triangulated truss that incorporated ten crystalline photovoltaic modules on one side of the truss and a reflective panel on the opposite side. The system used a utility interactive, programmable inverter and a 18.9 kilowatt-hour battery bank. The system is designed so that a DC fan, connected to one of the modules, forces ambient air across the back side of the modules. In the summer this heat is vented to the outside but in the winter this heated, fresh air is introduced into the building as ventilation air. Like the Applebee's system, the design allowed the entire roof assembly to be constructed off-site, tested, and then shipped to the site in pie-assembled, large components. During the first full year of operation, the 2.2 kilowatt (rated peak is 2.7 kilowatts) system contributed to an average peak reduction of .9 kilowatts. The system, as designed, saves 2,576 kilowatt-hours of electricity and offsets 3,473 kilowatt hours (of a potential thermal benefit of 10,172 collected kWhs) of thermal energy savings that is used as fresh air make-up in the colder months. This report is a summary of their conclusions.

Michael Nicklas

1999-09-08T23:59:59.000Z

57

Photovoltaic Systems  

Energy.gov (U.S. Department of Energy (DOE))

A photovoltaic (PV), or solar electric system, is made up of several photovoltaic solar cells. An individual PV cell is usually small, typically producing about 1 or 2 watts of power. To boost the...

58

Market Trial: Selling Off-Grid Lighting Products in Rural Kenya  

Science Conference Proceedings (OSTI)

In this study, we performed a market trial of off-grid LED lighting products in Maai Mahiu, arural Kenyan town. Our goals were to assess consumer demand and consumer preferences with respect to off-grid lighting systems and to gain feedback from off-grid lighting users at the point of purchase and after they have used to products for some time.

Tracy, Jennifer; Alstone, Peter; Jacobson, Arne; Mills, Evan

2010-06-21T23:59:59.000Z

59

S30-A2-02 PROPOSAL OF UNIQUE PV SYSTEM FOR LARGE-SCALE PHOTOVOLTAIC POWER GENERATION SYSTEM  

E-Print Network (OSTI)

In order to make a PV power generation system survive as an economically viable option against other renewable energy sources, drastic reduction of energy cost is inevitable. The authors have been working on the development of a unique PV system to reduce total system cost including solar panel, power conversion unit and installation work [I]. In the proposed concept, AC photovoltaic device and adhesive mounting method were introduced for the dedicated use in power station. By introducing this concept, it is feasible that the system cost will be reduced to 113 compared to the conventional system. The authors believe that the concept is suitable for very large-scale PV systems in desert areas. 1.

Kimitoshi Fukae; Akiharu Takabayashi; Shigenori Itoyama; Ichiro Kataoka; Hidehisa Makita; Masaaki Matsushita; Takaaki Mukai; Nobuyoshi Takehara; Masaki Konishi

2003-01-01T23:59:59.000Z

60

NREL PV AR&D 11th review meeting, May 13--15, 1992, Denver Marriott City Center, Denver, Colorado. Photovoltaic Advanced Research and Development Project  

DOE Green Energy (OSTI)

This is a collection of abstracts from papers presented at the National Renewable Energy Laboratory (NREL) Photovoltaic (PV) research and development review meeting held May 1992. Subject areas covered include solar cell and solar module manufacturing and development, materials, polycrystalline thin films, applications, amorphous silicon, solar cell performance and testing, crystalline silicon and other photovoltaic and safety perspectives. (GHH)

Not Available

1992-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Photovoltaic Cells  

Energy.gov (U.S. Department of Energy (DOE))

Photovoltaic (PV) cells, or solar cells, take advantage of the photoelectric effect to produce electricity. PV cells are the building blocks of all PV systems because they are the devices that...

62

PhD Scholarship: Performance and reliability of Photovoltaic (PV) Systems  

E-Print Network (OSTI)

less than those of alternative future energy-options. Different photovoltaic technologies pose (99.32-99.35 %) compared 27th European Photovoltaic Solar Energy Conference and Exhibition 4354 #12;to for the fate of end-of-life modules. 27th European Photovoltaic Solar Energy Conference and Exhibition 4355 #12

New South Wales, University of

63

Photovoltaics (PV) as an Eligible Measure in Residential PACE Programs: Benefits and Challenges (Fact Sheet)  

Science Conference Proceedings (OSTI)

Property Assessed Clean Energy (PACE) financing is one of several new financial models broadening access to clean energy by addressing the barrier of initial capital cost. The majority of the PACE programs in the market today include PV as an eligible measure. PV appeals to homeowners as a way to reduce utility bills, self-generate sustainable power, increase energy independence and demonstrate a commitment to the environment. If substantial state incentives for PV exist, PV projects can be economic under PACE, especially when partnered with good net metering policies. At the same time, PV is expensive relative to other eligible measures with a return on investment horizon that might exceed program targets. This fact sheet reviews the benefits and potential challenges of including PV in PACE programs.

Coughlin, J.

2010-06-01T23:59:59.000Z

64

Concentrating Photovoltaics: Collaborative Opportunities within DOEs CSP and PV Programs; Preprint  

DOE Green Energy (OSTI)

Presented at the 2001 NCPV Program Review Meeting: DOEs Concentrating Solar Power program is investigating the viability of concentrating PV converters as an alternative to thermal conversion devices.

Mehos, M.; Lewandowski, A.; Symko-Davies, M.; Kurtz, S.

2001-10-01T23:59:59.000Z

65

Do PV Systems Increase Residential Selling Prices If So, How Can Practitioners Estimate This Increase?  

E-Print Network (OSTI)

of the Effects of Photovoltaic Energy Systems on Residentialmarginal impacts of photovoltaic (PV) energy systems on homeThe market for photovoltaic (PV) energy systems is expanding

Hoen, Ben

2013-01-01T23:59:59.000Z

66

Concentrator Photovoltaic Systems  

Energy.gov (U.S. Department of Energy (DOE))

Concentrator photovoltaic (PV) systems use less solar cell material than other PV systems. PV cells are the most expensive components of a PV system, on a per-area basis. A concentrator makes use...

67

Experiment study on single-pass photovoltaic-thermal (PV/T) air collector with absorber  

Science Conference Proceedings (OSTI)

Problem statement: Solar cell received heat from solar irradiance as well and this will reduce the efficiency of the solar cell. The heat trap at the solar photovoltaic panel becomes waste energy. Approach: The solution for this was by adding a cooling ... Keywords: air collector, photovoltaic thermal, rectangle tunnel absorber, thermal efficiency

Goh Li Jin; Hafidz Ruslan; Sohif Mat; Mohd. Yusof Othman; Azami Zaharim; Kamaruzzaman Sopian

2010-10-01T23:59:59.000Z

68

Residential, Commercial, and Utility-Scale Photovoltaic (PV) System Prices in the United States: Current Drivers and Cost-Reduction Opportunities  

DOE Green Energy (OSTI)

The price of photovoltaic (PV) systems in the United States (i.e., the cost to the system owner) has dropped precipitously in recent years, led by substantial reductions in global PV module prices. However, system cost reductions are not necessarily realized or realized in a timely manner by many customers. Many reasons exist for the apparent disconnects between installation costs, component prices, and system prices; most notable is the impact of fair market value considerations on system prices. To guide policy and research and development strategy decisions, it is necessary to develop a granular perspective on the factors that underlie PV system prices and to eliminate subjective pricing parameters. This report's analysis of the overnight capital costs (cash purchase) paid for PV systems attempts to establish an objective methodology that most closely approximates the book value of PV system assets.

Goodrich, A.; James, T.; Woodhouse, M.

2012-02-01T23:59:59.000Z

69

OFF-GRID RENEWABLE ENERGY OPTIONS FOR RURAL ELECTRIFICATION IN WESTERN CHINA  

E-Print Network (OSTI)

OFF-GRID RENEWABLE ENERGY OPTIONS FOR RURAL ELECTRIFICATION IN WESTERN CHINA by the Center for Energy and Environmental Policy of University of Delaware Sponsored by National Renewable Energy Laboratory and Ministry of Agriculture People's Republic of China June 2001 #12;i OFF-GRID RENEWABLE ENERGY

Delaware, University of

70

205 kW Photovoltaic (PV) System Installed on the U.S. Department...  

NLE Websites -- All DOE Office Websites (Extended Search)

in partnership with the General Services Administration (GSA), has installed a rooftop solar electric, or PV, system on the roof of DOE's headquarters in Washington, D.C. The...

71

Off-Grid or Stand-Alone Renewable Energy Systems | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Off-Grid or Stand-Alone Renewable Energy Systems Off-Grid or Stand-Alone Renewable Energy Systems Off-Grid or Stand-Alone Renewable Energy Systems July 2, 2012 - 8:20pm Addthis Off-grid, or stand-alone, systems can be more cost-effective than connecting to the grid in remote locations. | Photo courtesy of Dave Parsons. Off-grid, or stand-alone, systems can be more cost-effective than connecting to the grid in remote locations. | Photo courtesy of Dave Parsons. What are the key facts? In remote locations, stand-alone systems can be more cost-effective than extending a power line to the electricity grid. Stand-alone systems are also used by people who live near the grid but are looking for independence from the power provider or to demonstrate a commitment to non-polluting energy sources. Batteries, and other additional equipment, are required with

72

Event:First International Off-Grid Renewable Energy Conference | Open  

Open Energy Info (EERE)

Off-Grid Renewable Energy Conference Off-Grid Renewable Energy Conference Jump to: navigation, search Calendar.png First International Off-Grid Renewable Energy Conference: on 2012/11/01 "The Alliance for Rural Electrification (ARE), the ECOWAS Regional Centre for Renewable Energy and Energy Efficiency (ECREEE) and the International Renewable Energy Agency (IRENA) are jointly organising the 1st International Off-grid Renewable Energy Conference, an official contribution to the UN Sustainable Energy for All Initiative. This Conference will be the first major international event focusing on off-grid renewables in developing countries with a special focus on Africa. With the objective of increasing the collaboration between public authorities and the private sector, the Conference's participants will collectively

73

Design and Performance of the Van Geet Off-Grid Home: Preprint  

DOE Green Energy (OSTI)

The Van Geet home near Denver, Colorado, demonstrates the successful integration of energy conservation measures and renewable energy supply in a beautiful, comfortable, energy-efficient, 295-m2 (3,176-ft2) off-grid home in a cold, sunny climate. Features include a tight envelope, energy-efficient appliances, passive solar heating (direct gain and Trombe wall), natural cooling, solar hot water, and photovoltaics. In addition to describing this house and its performance, this paper describes the recommended design process of (1) setting a goal for energy efficiency at the outset, (2) applying rules of thumb, and (3) using computer simulation to fine-tune the design. Performance monitoring and computer simulation are combined for the best possible analysis of energy performance. In this case, energy savings are estimated as 89% heating and cooling, 83% electrical, and nearly 100% domestic water heating. The heating and cooling energy use is 8.96 kJ/Cdaym2 (0.44 Btu/Fdayft2).

Barley, C. D.; Torcellini, P.; Van Geet, O.

2003-01-01T23:59:59.000Z

74

ANALYSIS OF OFF-GRID, OFF-PIPE HOUSING FOR HOT-HUMID AND HOT-ARID CLIMATES  

E-Print Network (OSTI)

This paper investigates the feasibility of off-grid, off-pipe housing in hot-humid and hot-arid climates in the U.S. The study aims to eliminate the need for non-renewable sources of energy and municipal water in residences by using off-grid, off-pipe design approach. To accomplish this, a 2001 International Energy Conservation Code compliant house in Houston, TX and Phoenix, AZ was simulated to determine the base-case energy and water use. Based on the availability of on-site renewable energy and water sources (i.e., solar, wind and biomass and rainfall) in these locations, energy and water efficiency measures were selected in order to reduce the energy and water use to a level that could be met solely by on-site renewable resources. Finally, the sizing of the renewable energy and rainwater harvesting systems was performed to provide for daily needs as well as cumulative needs during the critical periods, in order to achieve complete self sufficiency in terms of energy and water use. The analysis was performed by integrating the results of DOE-2.1e, F-Chart and PV F-Chart programs, and cumulative rainwater supply and water demand analysis. The simulation results demonstrate the differences between the priorities for energy efficiency, water-efficiency and renewable energy measures in hot-humid and hot-arid climates.

Malhotra, M.; Haberl, J.

2008-12-01T23:59:59.000Z

75

Benchmarking Non-Hardware Balance of System (Soft) Costs for U.S. Photovoltaic Systems Using a Data-Driven Analysis from PV Installer Survey Results  

SciTech Connect

This report presents results from the first U.S. Department of Energy (DOE) sponsored, bottom-up data-collection and analysis of non-hardware balance-of-system costs--often referred to as 'business process' or 'soft' costs--for residential and commercial photovoltaic (PV) systems.

Ardani, K.; Barbose, G.; Margolis, R.; Wiser, R.; Feldman, D.; Ong, S.

2012-11-01T23:59:59.000Z

76

An Analysis of Off-Grid, Off-Pipe Housing in Six U.S. Climates  

E-Print Network (OSTI)

This dissertation addresses the issues of climate change and depletion of non-renewable resources of energy and water, and aims at eliminating the use of non-renewable resources of energy and water for the building operation in single-family detached residences in the U.S. With this aim, this study investigated the feasibility of the off-grid, off-pipe design approach in six climate locations across the U.S. to achieve self-sufficiency in a house for building energy, indoor water use, and household wastewater and sewage disposal using only on-site available renewable resources. For the analysis, a 2,500 ft2, 2000/2001 International Energy Conservation Code standard reference house with typical building and usage characteristics was selected as the base case. The six U.S. climate locations included: Minneapolis, MN, Boulder, CO, Atlanta, GA, Houston, TX, Phoenix, AZ, and Los Angeles, CA. The renewable resources considered for this study included: solar radiation, wind, biomass for building energy needs; rainwater for indoor water use. In addition, the building site was considered for the disposal of household wastewater and sewage. The selected climate locations provided different scenarios in terms of base-case building energy needs and availability of renewable resources. Depending on these, energy and water efficiency measures were selected for reducing the building needs. For the reduced building needs, the sizing of systems for self-sufficiency was performed, including: solar thermal system for buildings space heating and water heating needs, photovoltaic and wind power systems for buildings electricity needs; rainwater harvesting system for indoor water needs; and septic system for the on-site disposal of household wastewater and sewage. In this manner, an integrated analysis procedure was developed for the analysis and design of off-grid, off-pipe homes, and was demonstrated for six U.S. climate locations. The results of the analysis indicated that achieving self-sufficiency for energy, water and sewage disposal was possible in all climates provided the systems for the collection and storage of renewable resources were large. On the other hand, the utilization of these systems was small for locations, where the year-to-year and seasonal variations in the weather conditions and availability of climate resources was large. For increased system utilization, minimization of the peak building needs, utilization of harvested energy for secondary purposes, and considering alternative systems for such applications are preferred.

Malhotra, Mini

2009-12-01T23:59:59.000Z

77

An Analysis of Off-grid, Off-pipe Housing in Six U.S. Climates  

E-Print Network (OSTI)

This dissertation addresses the issues of climate change and depletion of non-renewable resources of energy and water, and aims at eliminating the use of non-renewable resources of energy and water for the building operation in single-family detached residences in the U.S. With this aim, this study investigated the feasibility of the off-grid, off-pipe design approach in six climate locations across the U.S. to achieve self-sufficiency in a house for building energy, indoor water use, and household wastewater and sewage disposal using only on-site available renewable resources. For the analysis, a 2,500 ft2, 2000/2001 International Energy Conservation Code standard reference house with typical building and usage characteristics was selected as the base case. The six U.S. climate locations included: Minneapolis, MN, Boulder, CO, Atlanta, GA, Houston, TX, Phoenix, AZ, and Los Angeles, CA. The renewable resources considered for this study included: solar radiation, wind, biomass for building energy needs; rainwater for indoor water use. In addition, the building site was considered for the disposal of household wastewater and sewage. The selected climate locations provided different scenarios in terms of base-case building energy needs and availability of renewable resources. Depending on these, energy and water efficiency measures were selected for reducing the building needs. For the reduced building needs, the sizing of systems for self-sufficiency was performed, including: solar thermal system for buildings space heating and water heating needs, photovoltaic and wind power systems for buildings electricity needs; rainwater harvesting system for indoor water needs; and septic system for the on-site disposal of household wastewater and sewage. In this manner, an integrated analysis procedure was developed for the analysis and design of off-grid, off-pipe homes, and was demonstrated for six U.S. climate locations. The results of the analysis indicated that achieving self-sufficiency for energy, water and sewage disposal was possible is all climates provided the systems for the collection and storage of renewable resources were large. On the other hand, the utilization of these systems was small for locations, where the year-to-year and seasonal variations in the weather conditions and availability of climate resources was large. For increased system utilization, minimization of the peak building needs, utilization of harvested energy for secondary purposes, and considering alternative systems for such applications are preferred.

Malhotra, Mini

2009-12-01T23:59:59.000Z

78

Solar For Schools: A Case Study in Identifying and Implementing Solar Photovoltaic (PV) Projects in Three California School Districts  

SciTech Connect

The Department of Energy's (DOE) Solar America Showcase program seeks to accelerate demand for solar technologies among key end use market sectors. As part of this activity, DOE provides technical assistance through its national laboratories to large-scale, high-visibility solar installation projects. The Solar Schools Assessment and Implementation Project (SSAIP) in the San Francisco Bay Area was selected for a 2009 DOE Solar America Showcase award. SSAIP was formed through the efforts of the nonprofit Sequoia Foundation and includes three school districts: Berkeley, West Contra Costa, and Oakland Unified School Districts. This paper summarizes the technical assistance efforts that resulted from this technical assistance support. It serves as a case study and reference document detailing the steps and processes that could be used to successfully identify, fund, and implement solar photovoltaics (PV) projects in school districts across the country.

Kandt, A.

2011-01-01T23:59:59.000Z

79

Efficient Power Converters for PV Arrays : Scalable Submodule Power Conversion for Utility-Scale Photovoltaics  

Science Conference Proceedings (OSTI)

Solar ADEPT Project: SolarBridge is developing a new power conversion technique to improve the energy output of PV power plants. This new technique is specifically aimed at large plants where many solar panels are connected together. SolarBridge is correcting for the inefficiencies that occur when two solar panels that encounter different amounts of sun are connected together. In most conventional PV system, the weakest panel limits the energy production of the entire system. Thats because all of the energy collected by the PV system feeds into a single collection point where a central inverter then converts it into useable energy for the grid. SolarBridge has found a more efficient and cost-effective way to convert solar energy, correcting these power differences before they reach the grid.

None

2012-02-23T23:59:59.000Z

80

Solid-State Lighting on a Shoestring Budget: The Economics of Off-Grid Lighting for Small Businesses in Kenya  

E-Print Network (OSTI)

Report #3 Solid-State Lighting on a Shoestring Budget:The Economics of Off-Grid Lighting for Small Businesses inProject includes an Off-Grid Lighting Technology Assessment

Radecsky, Kristen

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

NREL: Photovoltaics Research - Events  

NLE Websites -- All DOE Office Websites (Extended Search)

success. The following events and meetings are of interest to partners of NREL Photovoltaics (PV) Research and the National Center for Photovoltaics (NCPV). Printable Version...

82

Photovoltaic industry proposed changes for the 1999 national electrical code for PV applications  

SciTech Connect

An industry supported task group has recently completed writing proposals for changes in bring Article 690 of the 1999 National Electrical Code (NEC{reg_sign}) up to the state-of-the-art in photovoltaic device and system technology. This paper summarizes proposed code changes, discusses background on both new and changed, and presents examples for the proposed changes. Topics such as the proposed new temperature compensation table for calculating maximum system voltage are analyzed. Procedures for calculating conductor sizes with the proposed changes are presented. Impacts on photovoltaic installations, building integrated systems, and AC module installations are also analyzed.

Bower, W. [Sandia National Labs., Albuquerque, NM (United States); Wiles, J.C. [New Mexico State Univ., Las Cruces, NM (United States). Southwest Technology Development Institute

1997-06-01T23:59:59.000Z

83

Photovoltaic (PV) Pricing Trends: Historical, Recent, and Near-Term Projections  

Science Conference Proceedings (OSTI)

This report helps to clarify the confusion surrounding different estimates of system pricing by distinguishing between past, current, and near-term projected estimates. It also discusses the different methodologies and factors that impact the estimated price of a PV system, such as system size, location, technology, and reporting methods.These factors, including timing, can have a significant impact on system pricing.

Feldman, D.; Barbose, G.; Margolis, R.; Wiser, R.; Darghouth, N.; Goodrich, A.

2012-11-01T23:59:59.000Z

84

World Renewable Energy Congress 2011 Sweden Photovoltaic Technology (PV) 8-11 May 2011, Linkping, Sweden  

E-Print Network (OSTI)

. Life cycle inventories are based on manufacturers' data combined with additional calculations, in addition to modules manufacturing process energy inputs. Keywords: Environmental impacts, LCA, PV installations, modules manufacturing electricity use and its corresponding fuel hal-00668178,version1-9Feb2012

Paris-Sud XI, Université de

85

Residential Photovoltaic Energy Systems in California: The Effect on Home Sales Prices  

E-Print Network (OSTI)

Residential Photovoltaic Energy Systems in California: Themarginal impacts of photovoltaic (PV) energy systems on home

Hoen, Ben

2013-01-01T23:59:59.000Z

86

Small Wind Guidebook/Can I Go Off-Grid | Open Energy Information  

Open Energy Info (EERE)

Can I Go Off-Grid Can I Go Off-Grid < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms * For More Information Can I Go "Off-Grid"?

87

Technical and Economic Assessment of Off-grid, Mini-grid and Grid  

Open Energy Info (EERE)

Technical and Economic Assessment of Off-grid, Mini-grid and Grid Technical and Economic Assessment of Off-grid, Mini-grid and Grid Electrification Technologies Jump to: navigation, search Tool Summary Name: Technical and Economic Assessment of Off-grid, Mini-grid and Grid Electrification Technologies Agency/Company /Organization: World Bank Sector: Energy Focus Area: Energy Efficiency Topics: Resource assessment, Technology characterizations Website: siteresources.worldbank.org/EXTENERGY/Resources/336805-1157034157861/E References: Technical and Economic Assessment of Off-grid, Mini-grid and Grid Electrification Technologies[1] Summary "This report is part of the Energy and Water Department's commitment to providing new techniques and knowledge which complement the direct investment and other assistance to electrification as provided by the

88

Introduction to off grid energy options for RE systems | Open Energy  

Open Energy Info (EERE)

Introduction to off grid energy options for RE systems Introduction to off grid energy options for RE systems Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Introduction to off grid energy options for RE systems Agency/Company /Organization: Alternative Energy Sector: Energy Focus Area: Renewable Energy Phase: Evaluate Options Topics: Co-benefits assessment, - Energy Access Resource Type: Guide/manual User Interface: Website Website: www.altenergy.org/Glossary/intro.html Cost: Free Language: English This guide is designed to help those who require modern energy-consuming equipment in off-grid areas and who must select appropriate power equipment. Rural development is greatly enhanced by the availability of decent lighting, pumping, refrigeration and audio-visual/communication tools. There is a wide variety of equipment available to meet these needs.

89

Photovoltaic Technology Incubator Awards  

SciTech Connect

This factsheet gives an overview of the Photovoltaic (PV) Technology Incubator Awards and the Solar America Initiative (SAI).

2007-06-01T23:59:59.000Z

90

An Analysis of the Effects of Photovoltaic Energy Systems on Residential Selling Prices in California.  

E-Print Network (OSTI)

Effects of Residential Photovoltaic Energy Systems on Homewith existing photovoltaic (PV) energy systems have sold ingrid-connected solar photovoltaic (PV) energy systems were

Cappers, Peter

2012-01-01T23:59:59.000Z

91

Benchmarking Non-Hardware Balance of System (Soft) Costs for U.S. Photovoltaic Systems Using a Data-Driven Analysis from PV Installer Survey Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Non-Hardware Non-Hardware Balance of System (Soft) Costs for U.S. Photovoltaic Systems Using a Data-Driven Analysis from PV Installer Survey Results November 2012 Benchmarking Non-Hardware Balance of System (Soft) Costs for U.S. Photovoltaic Systems Using a Data-Driven Analysis from PV Installer Survey Results NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Contract No. DE-AC36-08GO28308 LBNL's work was supported by the U.S. Department of Energy SunShot program under Contract No. DE-AC02-05CH11231 Technical Report DOE/GO-10212-3834 * November 2012 National Renewable Energy Laboratory 15013 Denver West Parkway

92

Photovoltaic Electrical Contacts and Cell Coatings | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Photovoltaic Electrical Contacts and Cell Coatings Photovoltaic Electrical Contacts and Cell Coatings August 19, 2013 - 4:12pm Addthis The outermost layers of photovoltaic (PV)...

93

Concentrator Photovoltaic Systems | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Concentrator Photovoltaic Systems Concentrator Photovoltaic Systems August 20, 2013 - 4:12pm Addthis Concentrator photovoltaic (PV) systems use less solar cell material than other...

94

Southern Company Photovoltaic Evaluation in Atlanta: Analysis of Field Data from Seven 4-kW PV Systems at Georgia Power Headquarters During 20102012  

Science Conference Proceedings (OSTI)

Seven photovoltaic (PV) power systems using different module technologies were installed on the rooftop of Georgia Powers headquarters in Atlanta. This report describes the output performance of these small-scale systems (about 4 kW each) relative to the available solar resource at the site. The main objective of this evaluation has been to assess performance characteristics of commercially available module technologies in a southeastern U.S. climate. To ensure a reliable comparison, all ...

2013-01-28T23:59:59.000Z

95

Reference module selection criteria for accurate testing of photovoltaic (PV) panels  

SciTech Connect

It is shown that for accurate testing of PV panels the correct selection of reference modules is important. A detailed description of the test methodology is given. Three different types of reference modules, having different I{sub SC} (short circuit current) and power (in Wp) have been used for this study. These reference modules have been calibrated from NREL. It has been found that for accurate testing, both I{sub SC} and power of the reference module must be either similar or exceed to that of modules under test. In case corresponding values of the test modules are less than a particular limit, the measurements may not be accurate. The experimental results obtained have been modeled by using simple equivalent circuit model and associated I-V equations. (author)

Roy, J.N.; Gariki, Govardhan Rao; Nagalakhsmi, V. [Solar Semiconductor Pvt. Ltd., Banjara Hills, Hyderabad (India)

2010-01-15T23:59:59.000Z

96

Building-integrated photovoltaics (BIPV): Analysis and US market potential. Final report  

DOE Green Energy (OSTI)

Arthur D. Little, Inc., in conjunction with Solar Design Associates, conducted a study for the US Department of Energy (DOE), Office of Building Technologies (OBT) to determine the market potential for grid-connected, building-integrated photovoltaics (BIPV). This study defines BIPV as two types of applications: (1) where the PV modules are an integral part of the building, often serving as the exterior weathering skin; and (2) the PV modules are mounted on the existing building exterior. Both of these systems are fully integrated with the energy usage of the building and have potential for significant market penetration in the US. Off-grid building applications also offer a near-term market for BIPV, but are not included in the scope of this study.

Frantzis, L.; Friedman, D.; Hill, S.; Teagan, P. [Little (Arthur D.), Inc., Cambridge, MA (United States); Strong, S.; Strong, M. [Solar Design Associates, Harvard, MA (United States)

1995-02-01T23:59:59.000Z

97

NREL: Photovoltaics Research - Standards Development  

NLE Websites -- All DOE Office Websites (Extended Search)

NREL's Photovoltaic (PV) Engineering group supports the development of national and international standards for PV engineering. Current standards lack specifics on how to...

98

NREL: Learning - Photovoltaics for Students  

NLE Websites -- All DOE Office Websites (Extended Search)

Solar Sprint. The following resources will help students find out more information about solar photovoltaic (PV) systems. If you are unfamiliar with PV systems, see introduction...

99

Photovoltaics | Open Energy Information  

Open Energy Info (EERE)

Photovoltaics Photovoltaics (Redirected from Photovoltaic) Jump to: navigation, search (The following text is derived from NREL's description of photovoltaic technology.)[1] Photovoltaic Panels Solar cells, also called photovoltaic (PV) cells by scientists, convert sunlight directly into electricity. PV gets its name from the process of converting light (photons) to electricity (voltage), which is called the PV effect. The PV effect was discovered in 1954, when scientists at Bell Telephone discovered that silicon (an element found in sand) created an electric charge when exposed to sunlight. Soon solar cells were being used to power space satellites and smaller items like calculators and watches. Today, thousands of people power their homes and businesses with individual

100

Energy System Development inAfrica: The case of grid and off-grid power inKenya  

E-Print Network (OSTI)

Africa: The case of grid and off-grid power inKenya Acknowledgements I have been lucky to spend the past five yearsEnergy System Development inAfrica: The case of grid and off-grid power inKenya By Katherine Deaton Development inAfrica: The case of grid and off-grid power inKenya Energy System Development inAfrica: The case

de Weck, Olivier L.

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Assessing the Performance of LED-Based Flashlights Available in the Kenyan Off-Grid Lighting Market  

E-Print Network (OSTI)

of emerging off-grid White-LED illumination systems, Light &Assessing the Performance of LED-Based Flashlights Availableflashlights that use LED technology are increasingly

Tracy, Jennifer

2010-01-01T23:59:59.000Z

102

PV System Performance and Standards  

DOE Green Energy (OSTI)

This paper presents a brief overview of the status and accomplishments during fiscal year (FY) 2005 of the Photovoltaic (PV) System Performance and Standards Subtask, which is part of the PV Systems Engineering Project (a joint NREL-Sandia project).

Osterwald, C. R.

2005-11-01T23:59:59.000Z

103

Photovoltaics  

DOE Green Energy (OSTI)

Summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its photovoltaics subprogram.

Not Available

2008-09-01T23:59:59.000Z

104

Photovoltaic energetic system: design and implementation  

Science Conference Proceedings (OSTI)

The increasing cost of the grid electric energy and the decreasing costs of the photovoltaic panels and accessories make the reason for many individuals and businesses to seriously take into consideration the solar power solution. In this paper we present ... Keywords: automatic, control, efficiency, energy, exposure, off-grid, optimization, photovoltaic, tracking

Lucian Milea; Orest Oltu; Claudius Teodorescu; Verona Muntean; Marius Stoian

2008-07-01T23:59:59.000Z

105

Ocean Wave Energy-Driven Desalination Systems for Off-grid Coastal Communities in Developing Countries  

Science Conference Proceedings (OSTI)

Resolute Marine Energy, Inc. (RME) is based in Boston, MA and is developing ocean wave energy converters (WECs) to benefit remote off-grid communities in developing nations. Our two WEC technologies are based on the heaving and surging motion of a buoy ... Keywords: ocean wave energy, renewable energy, desalination, water, coastal communities

Eshwan Ramudu

2011-10-01T23:59:59.000Z

106

Statistical Methods for Enhanced Metrology in Semiconductor/Photovoltaic Manufacturing  

E-Print Network (OSTI)

modeling method for photovoltaic cells. in Proc. IEEE 35thlosses in solar photovoltaic cell networks. Energy 32:Cell Variability Photovoltaic (PV) cells manufactured with

Zeng, Dekong

2012-01-01T23:59:59.000Z

107

The Market Value and Cost of Solar Photovoltaic Electricity Production  

E-Print Network (OSTI)

Production of Solar Photovoltaic Cells, Center for theconcerns is solar photovoltaic cells (PVs), which captureProduction of Solar Photovoltaic Cells Solar PV cells

Borenstein, Severin

2008-01-01T23:59:59.000Z

108

Photovoltaics: New opportunities for utilities  

SciTech Connect

This publication presents information on photovoltaics. The following topics are discussed: Residential Photovoltaics: The New England Experience Builds Confidence in PV; Austin's 300-kW Photovoltaic Power Station: Evaluating the Breakeven Costs; Residential Photovoltaics: The Lessons Learned; Photovoltaics for Electric Utility Use; Least-Cost Planning: The Environmental Link; Photovoltaics in the Distribution System; Photovoltaic Systems for the Rural Consumer; The Issues of Utility-Intertied Photovoltaics; and Photovoltaics for Large-Scale Use: Costs Ready to Drop Again.

Not Available

1991-07-01T23:59:59.000Z

109

Photovoltaics I  

Science Conference Proceedings (OSTI)

Mar 13, 2012 ... TiO2 is an attractive material for dye sensitized solar cells (DSSC) ... Second, I will discuss our design of photovoltaic (PV) materials that exploit...

110

Stabilized PV system  

DOE Patents (OSTI)

A stabilized PV system comprises an array of photovoltaic (PV) assemblies mounted to a support surface. Each PV assembly comprises a PV module and a support assembly securing the PV module to a position overlying the support surface. The array of modules is circumscribed by a continuous, belt-like perimeter assembly. Cross strapping, extending above, below or through the array, or some combination of above, below and through the array, secures a first position along the perimeter assembly to at least a second position along the perimeter assembly thereby stabilizing the array against wind uplift forces. The first and second positions may be on opposite sides on the array.

Dinwoodie, Thomas L. (Piedmont, CA)

2002-12-17T23:59:59.000Z

111

U.S. Army Fort Carson Photovoltaics Project Lease  

Energy.gov (U.S. Department of Energy (DOE))

Document describes the project lease issued for the Fort Carson photovoltaic (PV) power purchase agreement (PPA).

112

Off-grid Direction of Arrival Estimation Using Sparse Bayesian Inference  

E-Print Network (OSTI)

This paper is focused on solving the narrowband direction of arrival estimation problem from a sparse signal reconstruction perspective. Existing sparsity-based methods have shown advantages over conventional ones but exhibit limitations in practical situations where the true directions are not in the sampling grid. A so-called off-grid model is broached to reduce the modeling error caused by the off-grid directions. An iterative algorithm is proposed in this paper to solve the resulting problem from a Bayesian perspective while joint sparsity among different snapshots is exploited by assuming the same Laplace prior. Like existing sparsity-based methods, the new approach applies to arbitrary sensor array and exhibits increased resolution and improved robustness to noise and source correlation. Moreover, our approach results in more accurate direction of arrival estimation, e.g., smaller bias and lower mean squared error. High precision can be obtained with a coarse sampling grid and, meanwhile, computational ...

Yang, Zai; Zhang, Cishen

2011-01-01T23:59:59.000Z

113

Photovoltaic  

Science Conference Proceedings (OSTI)

Oct 9, 2012 ... Columnar p-n Heterostructures Formed by a Thin-Film Self-Assembly Approach: Potential for PV Solar Cells: Tolga Aytug1; Daniela Bogorin1;...

114

Online fault detection and tolerance for photovoltaic energy harvesting systems  

Science Conference Proceedings (OSTI)

Photovoltaic energy harvesting systems (PV systems) are subject to PV cell faults, which decrease the efficiency of PV systems and even shorten the PV system lifespan. Manual PV cell fault detection and elimination are expensive and nearly impossible ... Keywords: fault detection, fault tolerance, photovoltaic panel reconfiguration, photovoltaic system

Xue Lin; Yanzhi Wang; Di Zhu; Naehyuck Chang; Massoud Pedram

2012-11-01T23:59:59.000Z

115

RIGHT SIZING AN OFF-GRID SOLAR HOUSE Eleventh International IBPSA Conference Glasgow, Scotland  

E-Print Network (OSTI)

Power reliability is one of the biggest concerns for people living off-grid. Current practice in off-grid solar house tends to either oversize solar power system or oversize the backup generator to ensure available electricity at all times, which often leads to a high system capital cost. Research has shown that right-sizing is essential to achieve a more efficient system with reduced energy consumption. Sound, responsible system sizing can only happen when liability issues become part of the design methodology, i.e. actively communicating with prospective owners/occupants regarding the risk that the thermal comfort, and full time use of appliances cannot be fully guaranteed. The risk of nonfulfilments may be related to extraordinary environmental conditions for a certain amount of time of the year, the chance that certain components will fail for some reason, and the fact that predictions of the operation of houses are based on design idealizations, whereas its real operation is to some degree uncertain. This paper presents a value-based approach to find the balancing point between the acceptable reliability level and the affordable system capital cost. The value-based approach is illustrated through a sizing practice of an existing off-grid solar house in Atlanta, GA.

Huafen Hu; Godfried Augenbroe

2009-01-01T23:59:59.000Z

116

Energy 101: Solar PV | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Solar PV Solar PV Energy 101: Solar PV Addthis Below is the text version for the Energy 101: Solar PV video. The video opens with "Energy 101: Solar PV." This is followed by a timelapse shot of a city skyline as day turns to night. All right, we all know that the sun's energy creates heat and light, but it can also be converted to make electricity...and lots of it. The video shows images of building roofs, with and without solar photovoltaic panels. The words "Solar Photovoltaics (PV) appear onscreen over an image of a photovoltaic panel. One technology is called solar photovoltaics, or PV for short. Various images of solar panels appear onscreen, followed by images of photovoltaic manufacturing processes. You've probably seen PV panels around for years... but recent advancements

117

Electricity Rate Structures and the Economics of Solar PV: Could Mandatory Time-of-Use Rates Undermine Californias Solar Photovoltaic Subsidies?  

E-Print Network (OSTI)

that the real price of power that solar PV replaces issolar PV power the di?erence between the amortized cost of the PV power and price

Borenstein, Severin

2007-01-01T23:59:59.000Z

118

On-grid PV implementation program. Phase I report, August 1994--January 1995  

Science Conference Proceedings (OSTI)

Southern California Edison Company (Edison) is finalizing a Cooperative Agreement with the U.S. Department of Energy (DOE) to develop high value On-Grid applications for electricity from Photovoltaics (PV). Edison`s efforts are the result of Edison`s long-standing commitment to the pursuit of Renewable Energy. Edison has been a world leader in the development and use of PV. As the technology becomes more commercial, Edison has been actively seeking more applications for PV. After strenuous effort, Edison has now received approval to offer off-grid PV packages within its service territory. In addition, Edison has been very interested in finding high-value on-grid PV applications that may have the potential to become cost effective as PV applications increase and prices decline. Such high-value applications at Edison and other utilities will accelerate the price reductions, which in turn will increase the number of cost-effective applications, driving towards a market competitive with traditional sources of energy. Edison`s efforts build upon the work done by Pacific Gas & Electric (PG&E) at their Kerman substation, but goes much further than that effort. Edison submitted its original proposal to the DOE on June 30, 1993. A revised proposal was submitted on February 1, 1994, in response to a letter from the DOE`s Director of Solar Energy, Robert H. Annan. In a letter dated March 30, 1994, from Paul K. Kearns, Head of Contracting Activity for the DOE`s Golden Field Office, the DOE conditionally approved certain pre-award contract costs. The Cooperative Agreement with DOE was executed on August 16, 1994.

NONE

1994-11-29T23:59:59.000Z

119

Photovoltaic System Performance  

Energy.gov (U.S. Department of Energy (DOE))

Photovoltaic (PV) systems are usually composed of numerous solar arrays, which in turn, are composed of numerous PV cells. The performance of the system is therefore dependent on the performance of...

120

Photovoltaic Cell Structures  

Energy.gov (U.S. Department of Energy (DOE))

The actual structural design of a photovoltaic (PV), or solar cell, depends on the limitations of the material used in the PV cell. The four basic device designs are:

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Photovoltaic Cell Conversion Efficiency  

Energy.gov (U.S. Department of Energy (DOE))

The conversion efficiency of a photovoltaic (PV) cell, or solar cell, is the percentage of the solar energy shining on a PV device that is converted into electrical energy, or electricity....

122

Flat-Plate Photovoltaic Systems | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Flat-Plate Photovoltaic Systems Flat-Plate Photovoltaic Systems August 20, 2013 - 4:03pm Addthis The most common photovoltaic (PV) array design uses flat-plate PV modules or...

123

Photovoltaic Cell Materials  

Energy.gov (U.S. Department of Energy (DOE))

Although crystalline silicon cells are the most common type, photovoltaic (PV), or solar cells, can be made of many semiconductor materials. Each material has unique strengths and characteristics...

124

Southwest Photovoltaic Systems Inc | Open Energy Information  

Open Energy Info (EERE)

Southwest Photovoltaic Systems Inc Jump to: navigation, search Name Southwest Photovoltaic Systems Inc Place Tomball, Texas Zip 77375 Product Distributor of small scale PV systems...

125

British Photovoltaic Association | Open Energy Information  

Open Energy Info (EERE)

Photovoltaic Association Jump to: navigation, search Name British Photovoltaic Association Place Milton Keynes, United Kingdom Zip MK5 8NG Product Trade body for the PV industry in...

126

Alternating Current Photovoltaic Building Block - Energy ...  

This technology provides a fully integrated and self-containing alternating current (AC) photovoltaic (PV) Building Block device and method that allows photovoltaic ...

127

Photovoltaic Cell Performance Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Photovoltaic Cell Performance Basics August 19, 2013 - 4:55pm Addthis Photovoltaic (PV), or solar cells use the energy in sunlight to produce electricity. However, the amount...

128

NREL PV working with industry, 1st Quarter 1999  

SciTech Connect

This issue of PV Working with Industry profiles the participants in the Photovoltaic Manufacturing Technology (PVMaT) project.

Moon, S.

1999-05-20T23:59:59.000Z

129

Rooftop PV Data for Better Energy Prediction Models  

Science Conference Proceedings (OSTI)

... New generations of photovoltaic (PV) roofing products utilize designs that ... Finally, the researchers are taking solar radiation measurements at the ...

2011-04-26T23:59:59.000Z

130

Incentives as a Tool for Stimulating PV Market Growth  

SciTech Connect

This paper summarizes several studies analyzing consumer incentives for the grid-tied domestic photovoltaic (PV) market.

Herig, C.

2000-01-01T23:59:59.000Z

131

Photovoltaic Cell Basics | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Cell Basics Photovoltaic Cell Basics August 16, 2013 - 4:53pm Addthis Photovoltaic (PV) cells, or solar cells, take advantage of the photoelectric effect to produce electricity. PV...

132

City of Sunset Valley- PV Rebate Program  

Energy.gov (U.S. Department of Energy (DOE))

The City of Sunset Valley offers rebates to local homeowners who install photovoltaic (PV) systems on their properties. The local rebate acts as an add-on to the PV rebates that are offered by...

133

Residential Photovoltaic Energy Systems in California: The Effect on Home Sales Prices  

E-Print Network (OSTI)

for photovoltaic solar (PV), with nearly 1000 megawatts (MW)CONCLUSIONS The market for solar PV is expanding rapidly inand federal policymakers. Solar PV investments are sizable,

Hoen, Ben

2013-01-01T23:59:59.000Z

134

An Analysis of the Effects of Residential Photovoltaic Energy Systems on Home Sales Prices in California  

E-Print Network (OSTI)

Market Value of Residential Solar PV. Journal of SustainableConclusions The market for solar PV is expanding rapidly ingrid-connected solar photovoltaic (PV) energy systems were

Hoen, Ben

2011-01-01T23:59:59.000Z

135

The Impact of Retail Rate Structures on the Economics of Commercial Photovoltaic Systems in California  

E-Print Network (OSTI)

Markets. Rowlands, I. 2005. Solar PV Electricity and Market2003. Maximizing PV Peak Shaving with Solar Load Control:sited photovoltaic (PV) systems, solar will likely need to

Wiser, Ryan; Mills, Andrew; Barbose, Galen; Golove, William

2007-01-01T23:59:59.000Z

136

EELE408 Photovoltaics Lecture 18 Photovoltaic Arrays & Modules  

E-Print Network (OSTI)

1 EELE408 Photovoltaics Lecture 18 Photovoltaic Arrays & Modules Dr. Todd J. Kaiser tjkaiser@ece.montana.edu Department of Electrical and Computer Engineering Montana State University - Bozeman Photovoltaic Arrays PV PV Open Circuit Current reduced from this block by 25 % Current reduced from this cell by 25 % 3

Kaiser, Todd J.

137

Do Photovoltaic Energy Systems Effect Residential Selling Prices? Results from a California Statewide Investigation.  

E-Print Network (OSTI)

DO PHOTOVOLTAIC ENERGY SYSTEMS AFFECT RESIDENTIAL SELLINGopportunity employer. DO PHOTOVOLTAIC ENERGY SYSTEMS AFFECThave sold with photovoltaic (PV) energy systems installed at

Hoen, Ben

2012-01-01T23:59:59.000Z

138

An Analysis of the Effects of Residential Photovoltaic Energy Systems on Home Sales Prices in California  

E-Print Network (OSTI)

Effects of Residential Photovoltaic Energy Systems on HomeEffects of Residential Photovoltaic Energy Systems on Homewith existing photovoltaic (PV) energy systems have sold in

Hoen, Ben

2011-01-01T23:59:59.000Z

139

205 kW Photovoltaic (PV) System Installed on the U.S. Department of Energy's Forrestal Building  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Project Description Project Description The Energy Policy Act of 2005 (EPAct 2005), the Energy Independence and Security Act of 2007 (EISA 2007), and Presidential Executive Order 13423 all contain requirements for Federal facilities to decrease energy consumption and increase the use of renewable energy by the year 2015. To provide leadership in meeting these requirements, DOE, in partnership with the General Services Administration (GSA), has installed a rooftop solar electric, or PV, system on the roof of DOE's headquarters in Washington, D.C. The 205 kilowatt (kW) installation is one of the largest of its kind in the Nation's capital. A display in the For- restal building will show the power output of the PV system during the day and the energy produced over

140

STATISTICAL ANALYSIS AND STRUCTURE OPTIMIZATION OF LARGE PHOTOVOLTAIC MODULE  

E-Print Network (OSTI)

on the output power of large Photovoltaic (PV) module by modeling each PV cell as a current source whose short. Photovoltaic (PV) is a simple and elegant method of harnessing the sun's energy. PV devices (solar cellsSTATISTICAL ANALYSIS AND STRUCTURE OPTIMIZATION OF LARGE PHOTOVOLTAIC MODULE RATHEESH R

Qiu, Qinru

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Electricity Rate Structures and the Economics of Solar PV: Could Mandatory Time-of-Use Rates Undermine Californias Solar Photovoltaic Subsidies?  

E-Print Network (OSTI)

and the Economics of Solar PV: Could Mandatory Time-of-Useand the Economics of Solar PV: Could Mandatory Time-of-Usethat recipients of the solar PV subsidies go on time-of-

Borenstein, Severin

2007-01-01T23:59:59.000Z

142

NREL: Photovoltaics Research - Engineering  

NLE Websites -- All DOE Office Websites (Extended Search)

Photovoltaic Engineering Photovoltaic Engineering Photovoltaic (PV) Engineering at NREL supports commercial and emerging PV technology development. Our support covers the following three areas: Engineering Testing and Evaluation. We provide engineering testing and evaluation of PV products developed by companies during work sponsored by the U.S. Department of Energy (DOE). We determine if products meet performance criteria established by DOE for a company's contractual obligations. Standards Development. We support the development of national and international standards. Current work includes investigating methods of preconditioning cadmium telluride and copper indium gallium diselenide PV modules so that when they are tested for reporting conditions, the results are correlated with subsequent field measurements.

143

Photovoltaics | Open Energy Information  

Open Energy Info (EERE)

Photovoltaics Photovoltaics (Redirected from - Solar PV) Jump to: navigation, search (The following text is derived from NREL's description of photovoltaic technology.)[1] Photovoltaic Panels Solar cells, also called photovoltaic (PV) cells by scientists, convert sunlight directly into electricity. PV gets its name from the process of converting light (photons) to electricity (voltage), which is called the PV effect. The PV effect was discovered in 1954, when scientists at Bell Telephone discovered that silicon (an element found in sand) created an electric charge when exposed to sunlight. Soon solar cells were being used to power space satellites and smaller items like calculators and watches. Today, thousands of people power their homes and businesses with individual

144

Photovoltaics | Open Energy Information  

Open Energy Info (EERE)

(The following text is derived from NREL's description of photovoltaic (The following text is derived from NREL's description of photovoltaic technology.)[1] Photovoltaic Panels Solar cells, also called photovoltaic (PV) cells by scientists, convert sunlight directly into electricity. PV gets its name from the process of converting light (photons) to electricity (voltage), which is called the PV effect. The PV effect was discovered in 1954, when scientists at Bell Telephone discovered that silicon (an element found in sand) created an electric charge when exposed to sunlight. Soon solar cells were being used to power space satellites and smaller items like calculators and watches. Today, thousands of people power their homes and businesses with individual solar PV systems. Utility companies are also using PV technology for large

145

Photon management in thermal and solar photovoltaics  

E-Print Network (OSTI)

Photovoltaics is a technology that directly converts photon energy into electrical energy. Depending on the photon source, photovoltaic systems can be categorized into two groups: solar photovoltaics (PV) and thermophotovoltaics ...

Hu, Lu

2008-01-01T23:59:59.000Z

146

Dynamic Model Validation of PV Inverters under Short-Circuit Conditions  

Science Conference Proceedings (OSTI)

Photovoltaic (PV) modules have dramatically decreased in price in the past few years, spurring the expansion of PV deployment. Residential and commercial rooftop installations are connected to the distribution network, large-scale installation PV power ... Keywords: photovoltaic, PV, dynamic model, validation, solar PV inverter, renewables

E. Muljadi, M. Singh, R. Bravo, V. Gevorgian

2013-04-01T23:59:59.000Z

147

Photovoltaics | Open Energy Information  

Open Energy Info (EERE)

Photovoltaics Photovoltaics (Redirected from Solar Photovoltaics) Jump to: navigation, search (The following text is derived from NREL's description of photovoltaic technology.)[1] Photovoltaic Panels Solar cells, also called photovoltaic (PV) cells by scientists, convert sunlight directly into electricity. PV gets its name from the process of converting light (photons) to electricity (voltage), which is called the PV effect. The PV effect was discovered in 1954, when scientists at Bell Telephone discovered that silicon (an element found in sand) created an electric charge when exposed to sunlight. Soon solar cells were being used to power space satellites and smaller items like calculators and watches. Today, thousands of people power their homes and businesses with individual

148

PV and PV/hybrid products for buildings  

DOE Green Energy (OSTI)

Residential, commercial, and industrial buildings combined are the largest consumers of electricity in the United States and represent a significant opportunity for photovoltaic (PV) and PV/hybrid systems. The U.S. Department of Energy (DOE) is conducting a phased research and product development program, Building Opportunities in the United States for Photovoltaics (PV:BONUS), focused on this market sector. The purpose of the program is to develop technologies and foster business arrangements integrating cost-effective PV or hybrid products into buildings. The first phase was completed in 1996 and a second solicitation, PV:BONUS2, was initiated during 1997. These projects are resulting in a variety of building-integrated products. This paper summarizes the recent progress of the seven firms and collaborative teams currently participating in PV:BONUS2 and outlines planned work for the final phase of their work.

Thomas, H. P.; Hayter, S. J.; Martin, R. L., Pierce, L. K.

2000-05-15T23:59:59.000Z

149

Photovoltaic Modules: Effect of Tilt Angle on Soiling.  

E-Print Network (OSTI)

??Photovoltaic (PV) systems are one of the next generation's renewable energy sources for our world energy demand. PV modules are highly reliable. However, in polluted (more)

Cano, Jose

2011-01-01T23:59:59.000Z

150

Energy Basics: Flat-Plate Photovoltaic Balance of System  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Balance of System Complete photovoltaic (PV) energy systems are composed of three subsystems. On the power-generation side, the first subsystem of PV devices (cells, modules, and...

151

Solar For Schools: A Case Study in Identifying and Implementing Solar Photovoltaic (PV) Projects in Three California School Districts: Preprint  

DOE Green Energy (OSTI)

The Department of Energy's (DOE) Solar America Showcase program seeks to accelerate demand for solar technologies among key end use market sectors. As part of this activity the DOE provides Technical Assistance through its national laboratories to large-scale, high-visibility solar installation projects. The Solar Schools Assessment and Implementation Project (SSAIP) in the San Francisco Bay area was selected for a 2009 DOE Solar American Showcase award. SSAIP was formed through the efforts of the nonprofit Sequoia Foundation and includes three school districts: Berkeley, West Contra Costa, and Oakland Unified School Districts. This paper summarizes the technical assistance efforts that resulted from this technical assistance support. It serves as a case study and reference document detailing the steps and processes that could be used to successfully identify, fund, and implement solar PV projects in school districts across the country.

Kandt, A.

2011-04-01T23:59:59.000Z

152

NREL: Photovoltaics Research - Photovoltaic Manufacturing R&D...  

NLE Websites -- All DOE Office Websites (Extended Search)

in the background. BP Solar's manufacturing capabilities include automatic sorting of solar cells after final testing. NREL's Photovoltaic (PV) Manufacturing Research and...

153

Concentrating Photovoltaics  

Science Conference Proceedings (OSTI)

Concentrating photovoltaics (CPV) are a promising alternative to flat-plate photovoltaics in high direct normal irradiance (DNI) environments. The technologys basic operating characteristics offer significant upside compared with other solar technologies: higher system efficiencies of upwards of 30%+; higher capacity factors, generated through two-axis tracking, exceeding 30% in ideal locations; lower cellular degradation from heat compared to flat-plate PV; lower water requirements; and reduced footpri...

2010-11-19T23:59:59.000Z

154

Alternating Current Photovoltaic Building Block  

This technology provides a fully integrated and self-containing alternating current (AC) photovoltaic (PV) Building Block device and method that allows photovoltaic applications to become true plug-and-play devices. The Building Block combines, ...

155

Flat-Plate Photovoltaic Modules  

Energy.gov (U.S. Department of Energy (DOE))

Flat-plate photovoltaic (PV) modules are made of several components, including the front surface materials, encapsulant, rear surface, and frame.

156

Compound Photovoltaics - Programmaster.org  

Science Conference Proceedings (OSTI)

Sep 15, 2009 ... The growing prospects of current and coming solar-photovoltaic (PV) technologies are envisioned, arguing this solar-electricity source is...

157

Energy Basics: Photovoltaic Cell Performance  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Performance Photovoltaic (PV), or solar cells use the energy in sunlight to produce electricity. However, the amount of electricity produced depends on the quality of the light...

158

Lab Breakthrough: Microelectronic Photovoltaics | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

June 7, 2012 - 9:31am Addthis Sandia developed tiny glitter-sized photovoltaic (PV) cells that could revolutionize solar energy collection. The crystalline silicon...

159

Flat-Plate Photovoltaic Balance of System | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Balance of System Flat-Plate Photovoltaic Balance of System August 20, 2013 - 4:29pm Addthis Complete photovoltaic (PV) energy systems are composed of three subsystems....

160

SunShot Initiative: Next Generation Photovoltaics II  

NLE Websites -- All DOE Office Websites (Extended Search)

Home Systems Integration Balance of Systems Next Generation Photovoltaics II Twenty-three solar projects are investigating transformational photovoltaic (PV) technologies with the...

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Photovoltaic System Layout for Optimized Self-Consumption.  

E-Print Network (OSTI)

?? Most of the photovoltaic (solar cell) systems in Sweden today are installed on private houses and connected to the public grid. Photovoltaic (PV) power (more)

Luthander, Rasmus

2013-01-01T23:59:59.000Z

162

Definition: Photovoltaics | Open Energy Information  

Open Energy Info (EERE)

Photovoltaics Photovoltaics Jump to: navigation, search Dictionary.png Photovoltaics Pertaining to the direct conversion of light into electricity[1][2] View on Wikipedia Wikipedia Definition Photovoltaics (PV) is a method of generating electrical power by converting solar radiation into direct current electricity using semiconductors that exhibit the photovoltaic effect. Photovoltaic power generation employs solar panels composed of a number of solar cells containing a photovoltaic material. Materials presently used for photovoltaics include monocrystalline silicon, polycrystalline silicon, amorphous silicon, cadmium telluride, and copper indium gallium selenide/sulfide. Due to the increased demand for renewable energy sources, the manufacturing of solar cells and photovoltaic arrays has advanced

163

PV ENERGY ROI Tracks Efficiency Gains  

E-Print Network (OSTI)

PV ENERGY ROI Tracks Efficiency Gains the state of PV today E nergy payback time (EPBT) is the time it takes for a photovoltaic (PV) system to produce all the energy used through- out its life cycle. A short EPBT corre- sponds to a high energy return on energy invest- ment

164

SunShot Initiative: Evaluating the Causes of Photovoltaics Cost...  

NLE Websites -- All DOE Office Websites (Extended Search)

Causes of Photovoltaics Cost Reduction: Why is PV different? to someone by E-mail Share SunShot Initiative: Evaluating the Causes of Photovoltaics Cost Reduction: Why is PV...

165

www.eia.gov  

U.S. Energy Information Administration (EIA)

4/ Does not include off-grid photovoltaics (PV). ... 16 - SERC Reliability Corporation / Virginia-Carolina REG016 REG016:ca_ConventionalH ...

166

www.eia.gov  

U.S. Energy Information Administration (EIA)

4/ Does not include off-grid photovoltaics (PV). ... 04 - Midwest Reliability Council / West REG004 REG004:ca_ConventionalH REG004:ca_Geothermal ...

167

www.eia.gov  

U.S. Energy Information Administration (EIA)

4/ Does not include off-grid photovoltaics (PV). ... 09 - Reliability First Corporation / East REG009 REG009:ca_ConventionalH REG009:ca_Geothermal ...

168

Electricity Rate Structures and the Economics of Solar PV: Could Mandatory Time-of-Use Rates Undermine Californias Solar Photovoltaic Subsidies?  

E-Print Network (OSTI)

to promote the use of solar power. About 90% of the moreamortized cost of the solar PV power is likely to be greaterthe amortized cost of the solar PV power. To put this in

Borenstein, Severin

2007-01-01T23:59:59.000Z

169

Battery testing for photovoltaic applications  

SciTech Connect

Battery testing for photovoltaic (PV) applications is funded at Sandia under the Department of Energy`s (DOE) Photovoltaic Balance of Systems (BOS) Program. The goal of the PV BOS program is to improve PV system component design, operation, reliability, and to reduce overall life-cycle costs. The Sandia battery testing program consists of: (1) PV battery and charge controller market survey, (2) battery performance and life-cycle testing, (3) PV charge controller development, and (4) system field testing. Test results from this work have identified market size and trends, PV battery test procedures, application guidelines, and needed hardware improvements.

Hund, T.

1996-11-01T23:59:59.000Z

170

Electricity Rate Structures and the Economics of Solar PV: Could Mandatory Time-of-Use Rates Undermine Californias Solar Photovoltaic Subsidies?  

E-Print Network (OSTI)

amortized cost of the PV power and price per kWh that wouldthat the real price of power that solar PV replaces iscost per kWh of the PV power to the price per kWh that the

Borenstein, Severin

2007-01-01T23:59:59.000Z

171

Presented at the 21st European Photovoltaic Solar Energy Conference, Dresden,Germany, 4-8 September 2006 ENVIRONMENTAL IMPACTS OF PV ELECTRICITY GENERATION -  

E-Print Network (OSTI)

Presented at the 21st European Photovoltaic Solar Energy Conference, Dresden,Germany, 4-8 September (Franklin #12;Presented at the 21st European Photovoltaic Solar Energy Conference, Dresden,Germany, 4;Presented at the 21st European Photovoltaic Solar Energy Conference, Dresden,Germany, 4-8 September 2006 0 5

172

U.S. Aims for Zero-Energy: Support for PV on New Homes  

E-Print Network (OSTI)

a market segment for solar photovoltaic (PV) adoption, newProgram +$0.25/W NYSERDA Solar Electric PV Incentive Programprogram for PV in new homes, dubbed the Solar Advantage

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2006-01-01T23:59:59.000Z

173

Solid-State Lighting on a Shoestring Budget: The Economics of Off-Grid Lighting for Small Businesses in Kenya  

Science Conference Proceedings (OSTI)

superior lighting services to low income people in off-grid areas of developing countries, many of whom currently rely on fuel based lighting sources such as kerosene. If this potential is to be achieved in the near term, however, manufacturers must produce off-grid lighting products that are inexpensive, perform well, and meet the needs of potential end users. At present, relatively few products meet all three of these goals. In this article, we report results from a detailed study of lighting use by micro-enterprises in two small towns in Kenya's Rift Valley Province. The work included a survey about lighting use by 50 small businesses, careful measurements of kerosene lighting use patterns and associated costs for 23 of these businesses, and a subsequent field trial in which 14 of the 23 businesses purchased and used low cost LED lamps over a number of months.

Radecsky, Kristen; Johnstone, Peter; Jacobson, Arne; Mills, Evan

2008-12-14T23:59:59.000Z

174

Variability of PV on Distribution Systems  

Science Conference Proceedings (OSTI)

In 2010, the Electric Power Research Institute (EPRI) along with several utilities began collecting high-resolution monitoring data on distributed solar photovoltaic (PV) systems throughout the United States. Included in these monitoring data are single-module PV systems distributed along selected feeders as well as several larger PV systems (up to 1.4 MW). Utilizing data from these sites, this report focuses specifically on examining the measured variability of solar PV distributed throughout a ...

2012-12-13T23:59:59.000Z

175

Efficiency enhancement of luminescent solar concentrations for photovoltaic technologies  

E-Print Network (OSTI)

dyes. Photovoltaic (PV) solar cells are used to attach atis fa- vored by the silicon PV solar cells for the LSC PVemission properties for PV solar cells. We studied e?ect of

Wang, Chunhua

2011-01-01T23:59:59.000Z

176

NREL PV System Performance and Standards Technical Progress  

DOE Green Energy (OSTI)

This paper presents a brief overview of the status and accomplishments during Fiscal Year (FY)2004 of the Photovoltaic (PV) System Performance & Standards Subtask, which is part of PV Systems Engineering Project (a joint NREL-Sandia project).

Osterwald, C. R.

2005-01-01T23:59:59.000Z

177

Photovoltaic Cell Performance  

Energy.gov (U.S. Department of Energy (DOE))

Photovoltaic (PV), or solar cells use the energy in sunlight to produce electricity. However, the amount of electricity produced depends on the quality of the light available and the performance of...

178

Photovoltaic Cell Quantum Efficiency  

Energy.gov (U.S. Department of Energy (DOE))

Quantum efficiency (QE) is the ratio of the number of charge carriers collected by a photovoltaic (PV) cell to the number of photonsor packets of lightof a given energy shining on the solar cell....

179

Novel Control and Harmonics Impact of PV Solar Farms.  

E-Print Network (OSTI)

??This thesis presents a novel application of Photovoltaic (PV) solar system inverter, both during night and day, as a dynamic reactive power compensator STATCOM. This (more)

Das, Byomakesh

2012-01-01T23:59:59.000Z

180

Large-scale Solar PV Investment Planning Studies.  

E-Print Network (OSTI)

??In the pursuit of a cleaner and sustainable environment, solar photovoltaic (PV) power has been established as the fastest growing alternative energy source in the (more)

Muneer, Wajid

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Photovoltaic Subcontract Program  

DOE Green Energy (OSTI)

This report summarizes the fiscal year (FY) 1992 progress of the subcontracted photovoltaic (PV) research and development (R D) performed under the Photovoltaic Advanced Research and Development Project at the National Renewable Energy Laboratory (NREL)-formerly the Solar Energy Research Institute (SERI). The mission of the national PV program is to develop PV technology for large-scale generation of economically competitive electric power in the United States. The technical sections of the report cover the main areas of the subcontract program: the Crystalline Materials and Advanced Concepts project, the Polycrystalline Thin Films project, Amorphous Silicon Research project, the Photovoltaic Manufacturing Technology (PVMaT) project, PV Module and System Performance and Engineering project, and the PV Analysis and Applications Development project. Technical summaries of each of the subcontracted programs provide a discussion of approaches, major accomplishments in FY 1992, and future research directions.

Not Available

1993-03-01T23:59:59.000Z

182

NREL: Photovoltaics Research - Photovoltaic Energy Ratings Methods  

NLE Websites -- All DOE Office Websites (Extended Search)

Photovoltaic Energy Ratings Methods Validation Photovoltaic Energy Ratings Methods Validation The Photovoltaic (PV) Engineering group at NREL validates energy ratings methods by standards committees to establish an energy rating methodology. We are evaluating techniques to account for the impact on PV performance from variations in the spectral distribution of solar radiation. Two types of methods were evaluated for correcting the short-circuit current of PV modules for variations in the solar spectrum under clear skies: (1) empirical relationships based on air mass, and (2) use of spectral irradiance models and PV module spectral response data. Methods of the first type were the Sandia National Laboratories absolute air-mass function, or f(AMa), and the CREST air-mass function, or f(AM). The second

183

Comparison of Pyranometers vs. PV Reference Cells for Evaluation of PV Array Performance  

DOE Green Energy (OSTI)

As the photovoltaics (PV) industry has grown, the need for accurately monitoring the solar resource of PV power plants has increased. Historically, the PV industry has relied on thermopile pyranometers for irradiance measurements, and a large body of historical irradiance data taken with pyranometers exists. However, interest in PV reference devices is increasing. In this paper, we discuss why PV reference devices are better suited for PV applications, and estimate the typical uncertainties in irradiance measurements made with both pyranometers and PV reference devices. We assert that the quantity of interest in monitoring a PV power plant is the equivalent irradiance under the IEC 60904-3 reference solar spectrum that would produce the same electrical response in the PV array as the incident solar radiation. For PV-plant monitoring applications, we find the uncertainties in irradiance measurements of this type to be on the order of +/-5% for thermopile pyranometers and +/-2.4% for PV reference devices.

Dunn, L.; Gostein, M.; Emery, K.

2012-09-01T23:59:59.000Z

184

Production techniques of PV's and polycrystalline PV performance analyses for permanent resistive load  

Science Conference Proceedings (OSTI)

Photovoltaic (PV) panels which are used to convert solar energy to electrical energy one of the fastest growing source on energy sector. Their efficiencies are increasing day by day with new technologies. Photovoltaic's average efficiencies are still ... Keywords: D.C. loads, energy consumption, photovoltaic, production techniques

Safak Sa?lam; Gkhan Koyi?it; Nevzat Onat

2009-07-01T23:59:59.000Z

185

Energy 101: Solar PV | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Solar PV Solar PV Energy 101: Solar PV Addthis Description Solar photovoltaic (PV) systems can generate clean, cost-effective power anywhere the sun shines. This video shows how a PV panel converts the energy of the sun into renewable electricity to power homes and businesses. Duration 2:01 Topic Solar Energy Economy Credit Energy Department Video MR. : All right, we all know that the sun's energy creates heat and light. But it can also be converted to make electricity, and lots of it. One technology is called solar photovoltaics or PV for short. You've probably seen PV panels around for years, but recent advancements have greatly improved their efficiency and electrical output. Enough energy from the sun hits the earth every hour to power the planet for an

186

Electricity Rate Structures and the Economics of Solar PV: Could Mandatory Time-of-Use Rates Undermine Californias Solar Photovoltaic Subsidies?  

E-Print Network (OSTI)

Photovoltaic Systems in California and the Southwest RegionTime-of-Use Rates Undermine Californias Solar Photovoltaicof the University of California Energy Institute, a multi-

Borenstein, Severin

2007-01-01T23:59:59.000Z

187

Photovoltaic Resources and Technologies | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Photovoltaic Resources and Technologies Photovoltaic Resources and Technologies Photovoltaic Resources and Technologies October 7, 2013 - 9:22am Addthis Graphic of the eTraining logo Training Available Selecting, Implementing, and Funding Photovoltaic Systems in Federal Facilities: Learn how to select, implement, and fund a photovoltaic system by taking this FEMP eTraining course. This page provides a brief overview of photovoltaic (PV) technologies supplemented by specific information to apply PV within the Federal sector. Overview Photovoltaic cells convert sunlight into electricity. Systems typically include a PV module or array made of individual PV cells installed on or near a building or other structure. A power inverter converts the direct current (DC) electricity produced by the PV cells to alternative current

188

Photovoltaics (Fact Sheet)  

SciTech Connect

DOE works with national labs, academia, and industry to support the domestic photovoltaics (PV) industry and research enterprise. SunShot aims to achieve widespread, unsubsidized cost-competitiveness through an applied research and development (R&D) portfolio spanning PV materials, devices, and manufacturing technologies.

Not Available

2011-10-01T23:59:59.000Z

189

Photovoltaics (Fact Sheet)  

SciTech Connect

The U.S. Department of Energy (DOE) works with industry, academia, national laboratories, and other government agencies to advance solar photovoltaics (PV) domestically. The SunShot Initiative aims to achieve widespread, unsubsidized cost-competitiveness through an applied research and development (R&D) portfolio spanning PV materials, devices, and manufacturing technologies.

Not Available

2012-11-01T23:59:59.000Z

190

Matching Photovoltaic Orientation to Energy Loads  

Science Conference Proceedings (OSTI)

Rather than orienting rooftop installation of photovoltaics (PV) to maximize power for the individual customer-generator, we analyze design and performance of integrated PV for two alternate objectives: 1.) maximizing the volume of grid sellbacks, and ...

Seth Blumsack; Jeffrey Brownson; Jeff Rayl

2010-01-01T23:59:59.000Z

191

Practical Roadmap and Limits to Nanostructured Photovoltaics  

E-Print Network (OSTI)

The significant research interest in the engineering of photovoltaic (PV) structures at the nanoscale is directed toward enabling reductions in PV module fabrication and installation costs as well as improving cell power ...

Lunt, Richard R.

192

Energy Basics: Photovoltaic Cell Conversion Efficiency  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

efficiency of a photovoltaic (PV) cell, or solar cell, is the percentage of the solar energy shining on a PV device that is converted into electrical energy, or electricity....

193

DESIGN AND CONSTRUCTION EVALUATION OF A PHOTOVOLTAIC DC LED LIGHTING SYSTEM.  

E-Print Network (OSTI)

??The market demand for commercialization of Photovoltaic (PV) systems depends a lot on the reliability, efficiency and performance of various components within the system. PV (more)

Bhamidipati, Jyotsna

2008-01-01T23:59:59.000Z

194

New EIA data show total grid-connected photovoltaic solar capacity ...  

U.S. Energy Information Administration (EIA)

Using new information, EIA combines data on utility-scale solar photovoltaic (PV) capacity with customer-sited PV capacity, as reported in the graphic.

195

New results in forecasting of photovoltaic systems output based on solar radiation forecasting  

Science Conference Proceedings (OSTI)

Accurate short term forecasting of photovoltaic (PV) systems output has a great significance for fast development of PV parks in South-East Europe

Laurentiu Fara

2013-01-01T23:59:59.000Z

196

Photovoltaic energy program overview: Fiscal year 1994  

DOE Green Energy (OSTI)

This is the 1994 overview for the Photovoltaic Energy Program. The topics of this overview include cooperative research projects to improve PV systems and develop pre-commercial prototypes of new PV products, expanding understanding of the fundamental mechanisms governing the formation and performance of PV materials, and helping US industry enhance its leadership position in the PV market.

NONE

1995-03-01T23:59:59.000Z

197

Models of Photovoltaic Module Performance  

Science Conference Proceedings (OSTI)

An analysis of data collected over a three-year period at Pacific Gas and Electric Company's Photovoltaic Test Facility has enabled the prediction of photovoltaic (PV) module performance under conditions different from the test environment. The equations developed by PG&E provide a basis for rating photovoltaic modules and systems more accurately than in the past.

1988-09-01T23:59:59.000Z

198

Photovoltaic Cell Materials | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Materials Photovoltaic Cell Materials August 19, 2013 - 4:43pm Addthis Although crystalline silicon cells are the most common type, photovoltaic (PV), or solar cells, can be made...

199

Photovoltaic Electrical Contacts and Cell Coatings  

Energy.gov (U.S. Department of Energy (DOE))

The outermost layers of photovoltaic (PV) cell, or solar cell, are the electrical contacts and anti-reflective coating. These layers provide essential functions to the cell's operation.

200

SPUTTERED THIN FILM PHOTOVOLTAICS - Home - Energy ...  

for photovoltaic (PV) applications .These processes result in films with better unif ormity over ... ultimately resulting in a more efficient solar ce ...

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

NREL: Photovoltaics Research - News Release Archives  

NLE Websites -- All DOE Office Websites (Extended Search)

gap between photovoltaic (PV) module and cell efficiencies are opening their stainless steel arms to industry, academia, stakeholders , and other entities on Aug. 4 at a...

202

A solar concentrating photovoltaic/thermal collector.  

E-Print Network (OSTI)

??This thesis discusses aspects of a novel solar concentrating photovoltaic / thermal (PV/T) collector that has been designed to produce both electricity and hot water. (more)

Coventry, Joseph S

2008-01-01T23:59:59.000Z

203

Three dimensional carbon nanotube based photovoltaics .  

E-Print Network (OSTI)

??Photovoltaic (PV) cells with a three dimensional (3D) morphology are an exciting new research thrust with promise to create cheaper, more efficient solar cells by (more)

Flicker, Jack David

2011-01-01T23:59:59.000Z

204

Definition: PV module | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: PV module Jump to: navigation, search Dictionary.png PV module A unit comprised of several PV cells, and the principal unit of a PV array; it is intended to generate direct current power under un-concentrated sunlight.[1][2] View on Wikipedia Wikipedia Definition A solar panel is a set of solar photovoltaic modules electrically connected and mounted on a supporting structure. A photovoltaic module is a packaged, connected assembly of photovoltaic cells. The solar module can be used as a component of a larger photovoltaic system to generate and supply electricity in commercial and residential applications. Each module is rated by its DC output power under standard test conditions (STC), and

205

PV Module Reliability Research (Fact Sheet)  

DOE Green Energy (OSTI)

This National Center for Photovoltaics sheet describes the capabilities of its PV module reliability research. The scope and core competencies and capabilities are discussed and recent publications are listed.

Not Available

2013-06-01T23:59:59.000Z

206

Austin Energy- Commercial PV Incentive Program  

Energy.gov (U.S. Department of Energy (DOE))

Austin Energy, a municipal utility, offers a production incentive to its commercial and multi-family residential customers for electricity generated by qualifying photovoltaic (PV) systems of up to...

207

Austin Energy- Residential Solar PV Rebate Program  

Energy.gov (U.S. Department of Energy (DOE))

Austin Energy's Solar Rebate Program offers a $1.50 per watt incentive to eligible residential who install photovoltaic (PV) systems on their homes. Rebates are limited to $15,000 per home...

208

Results from Undergraduate PV Projects at Seven Historically Black Colleges and Universities  

DOE Green Energy (OSTI)

In 1995, the NREL/Department of Energy (DOE) National Photovoltaics Program funded seven Historically Black Colleges and Universities (HBCUs) in its HBCU Photovoltaic Research Associates Program for a period of three years. The program's purpose is to advance HBCU undergraduate knowledge of photovoltaics, primarily as a result of research investigations performed, and to encourage students to pursue careers in photovoltaics. This paper presents results from PV projects ranging from fundamental materials research on PV materials to field projects of PV systems.

McConnell, R. D.

1999-03-03T23:59:59.000Z

209

PHOTOVOLTAICS AND THE ENVIRONMENT 1998. REPORT ON THE WORKSHOP PHOTOVOLTAICS AND THE ENVIRONMENT 1999  

SciTech Connect

The objective of the workshop ``Photovoltaics and the Environment'' was to bring together PV manufacturers and industry analysts to define EH and S issues related to the large-scale commercialization of PV technologies.

FTHENAKIS,V.; ZWEIBEL,K.; MOSKOWITZ,P.

1999-02-01T23:59:59.000Z

210

FEMP--Photovoltaics  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Photovoltaics is a technology that converts radiant Photovoltaics is a technology that converts radiant light energy (photo) to electricity (voltaics). Photo- voltaic (PV) cells are the basic building blocks of this energy technology. PV cells (also called solar cells) are made of semicon- ductor materials, most typically silicon. The amount of electricity a PV cell produces depends on its size, its conversion efficiency (see box on reverse), and the intensity of the light source. Sunlight is the most common source of the energy used by PV cells to produce an electric current. It takes just a few PV cells to produce enough elec- tricity to power a small watch or solar calculator. For more power, cells are connected together to form larger units called modules. Modules, in turn, are connected to form arrays, and arrays can be

211

High Performance Photovoltaic Project Overview  

DOE Green Energy (OSTI)

The High-Performance Photovoltaic (HiPerf PV) Project was initiated by the U.S. Department of Energy to substantially increase the viability of photovoltaics (PV) for cost-competitive applications so that PV can contribute significantly to our energy supply and environment in the 21st century. To accomplish this, the National Center for Photovoltaics (NCPV) directs in-house and subcontracted research in high-performance polycrystalline thin-film and multijunction concentrator devices. In this paper, we describe the recent research accomplishments in the in-house directed efforts and the research efforts under way in the subcontracted area.

Symko-Davies, M.; McConnell, R.

2005-01-01T23:59:59.000Z

212

Photovoltaics as a worldwide energy source  

DOE Green Energy (OSTI)

Photovoltaic energy systems have historically been treated as a bulk power generation source for the future. However, utilities and other agencies involved with electrification throughout the world are beginning to find photovoltaics a least-cost option to meet specific loads both for themselves and their customers, in both off-grid and grid-connected applications. These expanding markets offer the potential of hundreds of megawatts of sales in the coming decade, but a strategy addressing both industrial growth and user acceptance is necessary to capitalize on this opportunity. 11 refs.

Jones, G.J.

1991-12-31T23:59:59.000Z

213

Solar PV Market Update, October 2013  

Science Conference Proceedings (OSTI)

Volume 7 of EPRIs quarterly Solar PV Market Update provides continued insight into some of the front line trends that are afoot throughout the photovoltaic segment. Like previous Updates, it synthesizes primary and secondary data from multiple sources in an effort to highlight economic, policy, and technology developments that are likely to impact utility solar PV investment and planning efforts.This report investigates some of the recent PV market and policy developments that ...

2013-10-15T23:59:59.000Z

214

NREL Photovoltaic Program. FY 1994 annual report, October 1, 1993--September 30, 1994  

DOE Green Energy (OSTI)

This report summarizes the in-house and subcontracted research and development activities under the National renewable Energy Laboratory (NREL) Photovoltaics (PV) program for fiscal year 1994. Research is organized under the following areas; PV program management; crystalline silicon and advanced devices; thin-film PV technologies; PV manufacturing; PV module and system performance and engineering; and PV applications and markets.

NONE

1995-06-01T23:59:59.000Z

215

Photovoltaic research opportunities. Final report  

DOE Green Energy (OSTI)

The purpose of this study is to identify opportunities for photovoltaic (PV) research projects to capitalize on related but non-PV research. The study is performed under the assumption that a considerable body of ongoing semiconductor research in non-PV areas could be of value to its PV Program and the PV community in general. Research related to III-V compounds, thin films, and crystalline silicon materials is included. Research that is known to be PV-related or sponsored by DOE was excluded from consideration. The study resulted in 11 recommendations (research areas) and a subset of 58 specific research projects. In addition, over 75 non-PV research managers in the semiconductor field are identified as potential sources of ideas which could benefit photovoltaics.

Macaleer, B.; Bowers, J.; Hurlburt, B.

1985-11-19T23:59:59.000Z

216

Calibration and Rating of Photovoltaics: Preprint  

SciTech Connect

Rating the performance of photovoltaic (PV) modules is critical to determining the cost per watt, and efficiency is useful to assess the relative progress among PV concepts. Procedures for determining the efficiency for PV technologies from 1-sun to low concentration to high concentration are discussed. We also discuss the state of the art in primary and secondary calibration of PV reference cells used by calibration laboratories around the world. Finally, we consider challenges to rating PV technologies and areas for improvement.

Emery, K.

2012-06-01T23:59:59.000Z

217

Near-optimal, dynamic module reconfiguration in a photovoltaic system to combat partial shading effects  

Science Conference Proceedings (OSTI)

Partial shading is a serious obstacle to effective utilization of photovoltaic (PV) systems since it can result in significant output power degradation for the system. A PV system is organized as a series connection of PV modules, each module comprising ... Keywords: dynamic programming, partial shading, photovoltaic module reconfiguration, photovoltaic system

Xue Lin; Yanzhi Wang; Siyu Yue; Donghwa Shin; Naehyuck Chang; Massoud Pedram

2012-06-01T23:59:59.000Z

218

Interconnecting PV on New York City's Secondary Network  

E-Print Network (OSTI)

66 IAEI NEWS January.February 2007 www.iaei.org inspectors demand more answers Perspectives on PV A series of articles on photovoltaic (PV) power systems and the National Electrical Code Inspectors DemandPVsystemorinspectingsuchasystem, therearemanynewfeaturesthatareworthquestioning.Herearesome of the questions that inspectors have raised via e-mail, telephone calls, andduringmyPV

219

Online Fault Detection and Tolerance for Photovoltaic Energy Harvesting Systems  

E-Print Network (OSTI)

Online Fault Detection and Tolerance for Photovoltaic Energy Harvesting Systems Xue Lin 1 , Yanzhi, yanzhiwa, dizhu, pedram}@usc.edu, 2 naehyuck@elpl.snu.ac.kr ABSTRACT Photovoltaic energy harvesting systems (PV systems) are subject to PV cell faults, which decrease the efficiency of PV systems and even

Pedram, Massoud

220

Supporting Photovoltaics in Market-Rate Residential New Construction: A Summary of Programmatic Experience to Date and Lessons Learned  

E-Print Network (OSTI)

Photovoltaics in Market-Rate Residential New ConstructionM. 2004. PV Potential in Residential New Construction.Photovoltaics in Market-Rate Residential New Construction

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Photovoltaic Energy Program overview, fiscal year 1997  

DOE Green Energy (OSTI)

The US Department of Energy (DOE) Photovoltaic Energy Program fosters the widespread acceptance of photovoltaic (PV) technology and accelerates commercial use of US PV products. The Program is founded on a collaborative strategy involving industry, the research and development community, potential users, utilities, and state and federal agencies. There are three main Program elements: Systems Engineering and Applications, Technology Development, and Research and Development.

NONE

1998-02-01T23:59:59.000Z

222

Photovoltaic Power Generation  

E-Print Network (OSTI)

This report is an overview of photovoltaic power generation. The purpose of the report is to provide the reader with a general understanding of photovoltaic power generation and how PV technology can be practically applied. There is a brief discussion of early research and a description of how photovoltaic cells convert sunlight to electricity. The report covers concentrating collectors, flat-plate collectors, thin-film technology, and building-integrated systems. The discussion of photovoltaic cell types includes single-crystal, poly-crystalline, and thin-film materials. The report covers progress in improving cell efficiencies, reducing manufacturing cost, and finding economic applications of photovoltaic technology. Lists of major manufacturers and organizations are included, along with a discussion of market trends and projections. The conclusion is that photovoltaic power generation is still more costly than conventional systems in general. However, large variations in cost of conventional electrical power, and other factors, such as cost of distribution, create situations in which the use of PV power is economically sound. PV power is used in remote applications such as communications, homes and villages in developing countries, water pumping, camping, and boating. Gridconnected applications such as electric utility generating facilities and residential rooftop installations make up a smaller but more rapidly expanding segment of PV use. Furthermore, as technological advances narrow the cost gap, more applications are becoming economically feasible at an accelerating rate. iii TABLE OF CONTENTS LIST OF TABLES AND FIGURES ...................................................................................v

Tom Penick; Gale Greenleaf Instructor; Thomas Penick; Bill Louk; Bill Louk

1998-01-01T23:59:59.000Z

223

PSCAD Modules Representing PV Generator  

SciTech Connect

Photovoltaic power plants (PVPs) have been growing in size, and the installation time is very short. With the cost of photovoltaic (PV) panels dropping in recent years, it can be predicted that in the next 10 years the contribution of PVPs to the total number of renewable energy power plants will grow significantly. In this project, the National Renewable Energy Laboratory (NREL) developed a dynamic modeling of the modules to be used as building blocks to develop simulation models of single PV arrays, expanded to include Maximum Power Point Tracker (MPPT), expanded to include PV inverter, or expanded to cover an entire PVP. The focus of the investigation and complexity of the simulation determines the components that must be included in the simulation. The development of the PV inverter was covered in detail, including the control diagrams. Both the current-regulated voltage source inverter and the current-regulated current source inverter were developed in PSCAD. Various operations of the PV inverters were simulated under normal and abnormal conditions. Symmetrical and unsymmetrical faults were simulated, presented, and discussed. Both the three-phase analysis and the symmetrical component analysis were included to clarify the understanding of unsymmetrical faults. The dynamic model validation was based on the testing data provided by SCE. Testing was conducted at SCE with the focus on the grid interface behavior of the PV inverter under different faults and disturbances. The dynamic model validation covers both the symmetrical and unsymmetrical faults.

Muljadi, E.; Singh, M.; Gevorgian, V.

2013-08-01T23:59:59.000Z

224

Ameren Missouri- Photovoltaic Rebate Program  

Energy.gov (U.S. Department of Energy (DOE))

Ameren Missouri offers rebates to its customers for the installation of net metered photovoltaic (PV) systems on their properties. The rebate is set at $2.00 per DC watt with a maximum rebate of ...

225

Salem Electric- Photovoltaic Rebate Program  

Energy.gov (U.S. Department of Energy (DOE))

Salem Electric offers a rebate to residential customers who install solar photovoltaic (PV) systems. Customers have the option of receiving a rebate or a [http://dsireusa.org/incentives/incentive...

226

Rooftop Photovoltaics Market Penetration Scenarios  

DOE Green Energy (OSTI)

The goal of this study was to model the market penetration of rooftop photovoltaics (PV) in the United States under a variety of scenarios, on a state-by-state basis, from 2007 to 2015.

Paidipati, J.; Frantzis, L.; Sawyer, H.; Kurrasch, A.

2008-02-01T23:59:59.000Z

227

Pv =PYv  

Science Conference Proceedings (OSTI)

... Where pv is partial pressure of vapor, yv is mole fraction of vapor, and P ... Therefore, the organic compound should be stored in the liquid form in the ...

2011-10-04T23:59:59.000Z

228

A novel fault diagnosis method based-on modified neural networks for photovoltaic systems  

Science Conference Proceedings (OSTI)

The main purpose of this paper is to propose an intelligent fault diagnostic method for photovoltaic (PV) systems. First, Solar Pro software package was used to simulate a photovoltaic system for gathering power generation data of photovoltaic modules ... Keywords: extension theory, fault diagnosis, matter-element model, neural networks, photovoltaic (PV) system

Kuei-Hsiang Chao; Chao-Ting Chen; Meng-Hui Wang; Chun-Fu Wu

2010-06-01T23:59:59.000Z

229

www.eia.gov  

U.S. Energy Information Administration (EIA)

4/ Does not include off-grid photovoltaics (PV). Based on annual PV shipments from 1989 through 2010, EIA estimates that as much as 245 megawatts of remote electricity

230

www.eia.gov  

U.S. Energy Information Administration (EIA)

4/ Facilities co-firing biomass and coal are classified as coal. 5/ Does not include off-grid photovoltaics (PV). Based on annual PV shipments from 1989 through ...

231

Outdoor PV Degradation Comparison  

DOE Green Energy (OSTI)

As photovoltaic (PV) penetration of the power grid increases, it becomes vital to know how decreased power output; may affect cost over time. In order to predict power delivery, the decline or degradation rates must be determined; accurately. At the Performance and Energy Rating Testbed (PERT) at the Outdoor Test Facility (OTF) at the; National Renewable Energy Laboratory (NREL) more than 40 modules from more than 10 different manufacturers; were compared for their long-term outdoor stability. Because it can accommodate a large variety of modules in a; limited footprint the PERT system is ideally suited to compare modules side-by-side under the same conditions.

Jordan, D. C.; Smith, R. M.; Osterwald, C. R.; Gelak, E.; Kurtz, S. R.

2011-02-01T23:59:59.000Z

232

Ensuring Quality of PV Modules: Preprint  

SciTech Connect

Photovoltaic (PV) customers need to have confidence in the PV modules they purchase. Currently, no test can quantify a module's lifetime with confidence, but stress tests are routinely used to differentiate PV product designs. We suggest that the industry would be strengthened by using the wisdom of the community to develop a single set of tests that will help customers quantify confidence in PV products. This paper evaluates the need for quality assurance (QA) standards and suggests a path for creating these. Two types of standards are needed: 1) QA of the module design and 2) QA of the manufacturing process.

Kurtz, S.; Wohlgemuth, J.; Hacke, P.; Kempe, M.; Sample, T.; Yamamichi, M.; Kondo, M.; Doi, T.; Otani, K.; Amano, J.

2011-07-01T23:59:59.000Z

233

NREL: Photovoltaics Research - Company Partners in Photovoltaic  

NLE Websites -- All DOE Office Websites (Extended Search)

Company Partners in Photovoltaic Manufacturing R&D Company Partners in Photovoltaic Manufacturing R&D More than 40 private-sector companies partnered with NREL on successful efforts within the PV Manufacturing R&D Project. They included manufacturers of crystalline silicon, thin-film, and concentrator solar technologies. The companies are listed below. Advanced Energy Systems Alpha Solarco ASE Americas AstroPower/GE Energy Boeing Aerospace BP Solar Cronar Crystal Systems Dow Corning Energy Conversion Devices Energy Photovoltaics ENTECH Evergreen Solar First Solar Glasstech Solar Global Photovoltaic Specialists Global Solar Energy Golden Photon Iowa Thin Film Technologies ITN Energy Systems Kopin Mobil Solar Energy Omnion Power Engineering Photon Energy Photovoltaics International PowerLight RWE Schott Solar/Schott Solar

234

Distributed Photovoltaics: Utility Integration Issues and Opportunities  

Science Conference Proceedings (OSTI)

This white paper addresses industry involvement in distributed photovoltaic (PV) deployment and integration from a technical and business perspective. It considers evolving PV system technologies and markets, introduces distributed PV applications and initiatives being implemented by utilities and other industry participants, and identifies critical issues and opportunities facing the U.S. electric sector.

2008-08-29T23:59:59.000Z

235

Ryne P. Raffaelle National Center for Photovoltaics  

E-Print Network (OSTI)

of incident solar radiation. Typical PV panels convert about 10-20% of incident solar radiation of energy, it is clear that photovoltaics (PV) and solar thermal collectors (STC) have great potential "solar collection real estate" and the fact that 60%-70% of the solar radiation incident on PV cells

236

A software tool for optimal sizing of PV systems in Malaysia  

Science Conference Proceedings (OSTI)

This paper presents a MATLAB based user friendly software tool called as PV. MY for optimal sizing of photovoltaic (PV) systems. The software has the capabilities of predicting themetrological variables such as solar energy, ambient temperature and wind ...

Tamer Khatib; Azah Mohamed; K. Sopian

2012-01-01T23:59:59.000Z

237

Climatically Diverse Data Set for Flat-Plate PV Module Model Validations (Presentation)  

SciTech Connect

Photovoltaic (PV) module I-V curves were measured at Florida, Colorado, and Oregon locations to provide data for the validation and development of models used for predicting the performance of PV modules.

Marion, B.

2013-05-01T23:59:59.000Z

238

Photovoltaics: Program overview, fiscal year 1992  

DOE Green Energy (OSTI)

The US DOE`s Photovoltaics program has helped photovoltaic technologies evolve from materials and concepts in the laboratories to competitive products rolling off automated assembly lines. This document is divided into the following sections: 1992 PV program accomplishments, expanding markets for photovoltaic systems, developing today`s systems with utilities and industry, working with industry to advance the technology, cooperative research to improve materials and devices, selected achievements in cooperative R and D, and PV program services. Figs, tabs.

Not Available

1993-03-01T23:59:59.000Z

239

photovoltaics | OpenEI  

Open Energy Info (EERE)

photovoltaics photovoltaics Dataset Summary Description This dataset is part of a larger internal dataset at the National Renewable Energy Laboratory (NREL) that explores various characteristics of large solar electric (both PV and CSP) facilities around the United States. This dataset focuses on the land use characteristics for solar facilities that are either under construction or currently in operation. Source Land-Use Requirements for Solar Power Plants in the United States Date Released June 25th, 2013 (5 months ago) Date Updated Unknown Keywords acres area average concentrating solar power csp Density electric hectares km2 land land requirements land use land-use mean photovoltaic photovoltaics PV solar statistics Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon Master Solar Land Use Spreadsheet (xlsx, 1.5 MiB)

240

NREL Photovoltaic Program FY 1993  

DOE Green Energy (OSTI)

This report reviews the in-house and subcontracted research and development (R&D) activities under the National Renewable Energy Laboratory (NREL) Photovoltaic (PV) Program from October 1, 1992, through September 30, 1993 (fiscal year [FY] 1993). The NREL PV Program is part of the U.S. Department of Energy`s (DOE`s) National Photovoltaics Program, as described in the DOE Photovoltaics Program Plan, FY 1991 - FY 1995. The FY 1993 budget authority (BA) for carrying out the NREL PV Program was $40.1 million in operating funds and $0.9 million in capital equipment funds. An additional $4.8 million in capital equipment funds were made available for the new Solar Energy Research Facility (SERF) that will house the in-house PV laboratories beginning in FY 1994. Subcontract activities represent a major part of the NREL PV Program, with more than $23.7 million (nearly 59%) of the FY 1993 operating funds going to 70 subcontractors. In FY 1993, DOE assigned certain other PV subcontracting efforts to the DOE Golden Field Office (DOE/GO), and assigned responsibility for their technical support to the NREL PV Program. An example is the PV:BONUS (Building Opportunities in the U.S. for Photovoltaics) Project. These DOE/GO efforts are also reported in this document.

Not Available

1994-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Experiences and Lessons Learned With Residential Photovoltaic Systems  

Science Conference Proceedings (OSTI)

This report documents experiences with 86-grid-connected residential photovoltaic (PV) systems located at three sites. This information is valuable to utilities in planning their use of distributed PV generation.

1991-08-08T23:59:59.000Z

242

Transmission System Performance Analysis for High-Penetration Photovoltaics  

DOE Green Energy (OSTI)

This study is an assessment of the potential impact of high levels of penetration of photovoltaic (PV) generation on transmission systems. The effort used stability simulations of a transmission system with different levels of PV generation and load.

Achilles, S.; Schramm, S.; Bebic, J.

2008-02-01T23:59:59.000Z

243

Photovoltaics and the National Park Service : an institutional analysis  

E-Print Network (OSTI)

This paper is one of a series resulting from institutional analysis of photovoltaic (PV) acceptance. The case reported here involves the acceptance of PV by the National Park Service. As part of the Department of the ...

Nutt-Powell, Thomas E.

1980-01-01T23:59:59.000Z

244

GreyStone Power - Photovoltaic Rebate Program (Georgia) | Open...  

Open Energy Info (EERE)

Summary GreyStone Power, an electricity cooperative in Georgia, offers a rebate for solar photovoltaic (PV) systems to members. The one-time rebate is offered for PV...

245

Assessing the drivers of regional trends in solar photovoltaic manufacturing  

E-Print Network (OSTI)

The photovoltaic (PV) industry has grown rapidly as a source of energy and economic activity. Since 2008, the average manufacturer-sale price of PV modules has declined by over a factor of two, coinciding with a significant ...

Goodrich, Alan C.

246

GreyStone Power - Photovoltaic Rebate Program | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Power GreyStone Power, an electricity cooperative in Georgia, offers a rebate for solar photovoltaic (PV) systems to members. The one-time rebate is offered for PV...

247

Uncertainties in the Value of Bill Savings from Behind-the-Meter, Residential Photovoltaic Systems: The Roles of Electricity Market Conditions, Retail Rate Design, and Net Metering.  

E-Print Network (OSTI)

??Net metering has become a widespread policy mechanism in the U.S. for supporting customer adoption of distributed photovoltaics (PV), allowing customers with PV systems to (more)

Darghouth, Naim Richard

2013-01-01T23:59:59.000Z

248

Photovoltaic Module Reliability Workshop 2011: February 16-17, 2011  

SciTech Connect

NREL's Photovoltaic (PV) Module Reliability Workshop (PVMRW) brings together PV reliability experts to share information, leading to the improvement of PV module reliability. Such improvement reduces the cost of solar electricity and promotes investor confidence in the technology--both critical goals for moving PV technologies deeper into the electricity marketplace.

Kurtz, S.

2013-11-01T23:59:59.000Z

249

Photovoltaic Module Reliability Workshop 2010: February 18-19, 2010  

SciTech Connect

NREL's Photovoltaic (PV) Module Reliability Workshop (PVMRW) brings together PV reliability experts to share information, leading to the improvement of PV module reliability. Such improvement reduces the cost of solar electricity and promotes investor confidence in the technology--both critical goals for moving PV technologies deeper into the electricity marketplace.

Kurtz, J.

2013-11-01T23:59:59.000Z

250

Photovoltaic Module Reliability Workshop 2012: February 28 - March 1, 2012  

SciTech Connect

NREL's Photovoltaic (PV) Module Reliability Workshop (PVMRW) brings together PV reliability experts to share information, leading to the improvement of PV module reliability. Such improvement reduces the cost of solar electricity and promotes investor confidence in the technology--both critical goals for moving PV technologies deeper into the electricity marketplace.

Kurtz, S.

2013-11-01T23:59:59.000Z

251

Photovoltaic Module Reliability Workshop 2013: February 26-27, 2013  

SciTech Connect

NREL's Photovoltaic (PV) Module Reliability Workshop (PVMRW) brings together PV reliability experts to share information, leading to the improvement of PV module reliability. Such improvement reduces the cost of solar electricity and promotes investor confidence in the technology--both critical goals for moving PV technologies deeper into the electricity marketplace.

Kurtz, S.

2013-10-01T23:59:59.000Z

252

Modeling Metal Fatigue As a Key Step in PV Module Life Time Prediction (Presentation)  

DOE Green Energy (OSTI)

This presentation covers modeling metal fatigue as a key step in photovoltaic (PV) module lifetime predictions. Described are time-dependent and time-independent case studies.

Bosco, N.

2012-02-01T23:59:59.000Z

253

Analyzing and simulating the variability of solar irradiance and solar PV powerplants.  

E-Print Network (OSTI)

??Solar energy is a promising renewable resource, but the variability of solar photovoltaic (PV) power due to cloud- caused fluctuations is a concern for electric (more)

Lave, Matthew S.

2012-01-01T23:59:59.000Z

254

Development of a model for physical and economical optimization of distributed PV systems.  

E-Print Network (OSTI)

?? There are a number of factors that influence both the physical and the economical performance of a photovoltaic solar energy (PV) installation. The aim (more)

Nsvall, David

2013-01-01T23:59:59.000Z

255

Thermal and Electrical Performance Evaluation of PV/T Collectors in UAE.  

E-Print Network (OSTI)

?? Photovoltaic Thermal/Hybrid collectors are an emerging technology that combines PV and solar thermal collectors by producing heat and electricity simultaneously. In this paper, thermal (more)

Kaya, Mustafa

2013-01-01T23:59:59.000Z

256

Flat-Plate Photovoltaic Modules | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Modules Flat-Plate Photovoltaic Modules August 20, 2013 - 4:25pm Addthis Flat-plate photovoltaic (PV) modules are made of several components, including the front surface materials,...

257

Case Studies of Grid-Connected Photovoltaic Systems, Vol. 2  

Science Conference Proceedings (OSTI)

The photovoltaic (PV) industry is growing rapidly, and PV power is likely to become an increasingly significant source of distributed generation as its cost declines over the next ten years. This report documents a number of grid-connected photovoltaic case studies covering a broad range of system configurations and project types. The report provides field experience useful to improve the design of future PV systems and identifies problems that need to be addressed to promote the integration of PV power ...

2003-03-25T23:59:59.000Z

258

Case Studies of Grid-Connected Photovoltaic Systems, Vol. 1  

Science Conference Proceedings (OSTI)

This interim report documents a number of grid-connected photovoltaic (PV) case studies, covering a broad range of different system and project types.

2002-03-12T23:59:59.000Z

259

Financing Non-Residential Photovoltaic Projects: Options and Implications  

E-Print Network (OSTI)

of panel titled Financing Residential and Small CommercialL ABORATORY Financing Non-Residential Photovoltaic Projects:1 2. Policy Support for Non-Residential PV

Bolinger, Mark

2009-01-01T23:59:59.000Z

260

Building Integrated Photovoltaics (BIPV) in the Residential Sector...  

NLE Websites -- All DOE Office Websites (Extended Search)

For more than 30 years, there have been strong efforts to accelerate the deployment of solar- electric systems by developing photovoltaic (PV) products that are fully integrated...

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Energy Basics: Photovoltaic Electrical Contacts and Cell Coatings  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Contacts and Cell Coatings The outermost layers of photovoltaic (PV) cell, or solar cell, are the electrical contacts and anti-reflective coating. These layers provide...

262

Utility-scale installations lead solar photovoltaic growth - Today ...  

U.S. Energy Information Administration (EIA)

According to EIA's new survey-based estimate of total solar capacity, total on-grid photovoltaic (PV) capacity nearly doubled in 2011, led by particularly strong ...

263

Novel materials, computational spectroscopy, and multiscale simulation in nanoscale photovoltaics  

E-Print Network (OSTI)

Photovoltaic (PV) solar cells convert solar energy to electricity using combinations of semiconducting sunlight absorbers and metallic materials as electrical contacts. Novel nanoscale materials introduce new paradigms for ...

Bernardi, Marco, Ph. D. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

264

Photovoltaic Cell Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Cell Basics Cell Basics Photovoltaic Cell Basics August 16, 2013 - 4:53pm Addthis Photovoltaic (PV) cells, or solar cells, take advantage of the photoelectric effect to produce electricity. PV cells are the building blocks of all PV systems because they are the devices that convert sunlight to electricity. Commonly known as solar cells, individual PV cells are electricity-producing devices made of semiconductor materials. PV cells come in many sizes and shapes, from smaller than a postage stamp to several inches across. They are often connected together to form PV modules that may be up to several feet long and a few feet wide. Modules, in turn, can be combined and connected to form PV arrays of different sizes and power output. The modules of the array make up the major part of a PV system, which can also include electrical connections,

265

Basic photovoltaic principles and methods  

DOE Green Energy (OSTI)

This book presents a nonmathematical explanation of the theory and design of photovoltaic (PV) solar cells and systems. The basic elements of PV are introduced: the photovoltaic effect, physical aspects of solar cell efficiency, the typical single-crystal silicon solar cell, advances in single-crystal silicon solar cells. This is followed by the designs of systems constructed from individual cells, including possible constructions for putting cells together and the equipment needed for a practical producer of electrical energy. The future of PV is then discussed. (LEW)

Hersch, P.; Zweibel, K.

1982-02-01T23:59:59.000Z

266

PV output smoothing with energy storage.  

SciTech Connect

This report describes an algorithm, implemented in Matlab/Simulink, designed to reduce the variability of photovoltaic (PV) power output by using a battery. The purpose of the battery is to add power to the PV output (or subtract) to smooth out the high frequency components of the PV power that that occur during periods with transient cloud shadows on the PV array. The control system is challenged with the task of reducing short-term PV output variability while avoiding overworking the battery both in terms of capacity and ramp capability. The algorithm proposed by Sandia is purposely very simple to facilitate implementation in a real-time controller. The control structure has two additional inputs to which the battery can respond. For example, the battery could respond to PV variability, load variability or area control error (ACE) or a combination of the three.

Ellis, Abraham; Schoenwald, David Alan

2012-03-01T23:59:59.000Z

267

PV FAQs: Does the world have enough materials for PV to help address climate change?  

DOE Green Energy (OSTI)

In the ongoing discussion of what needs to be done to stabilize atmospheric CO2 by mid-century (Hoffert 1998), one possible option would be to add about 10-20 terawatts (trillion watts, or TW) of photovoltaics (PV) in place of conventional sources. PV would help because, unlike burning fossil fuels, it produces no CO2. However, 10-20 TW is an enormous amount of energy. In peak Watts, the way PV installations are generally rated, it is about 50-100 TWpeak (TWp) of PV. Would we have enough materials to make this much PV? As we explain in this PV FAQ, we think our planet has enough feedstock materials for PV to meet the ''TW challenge.''

Not Available

2005-06-01T23:59:59.000Z

268

SunShot Initiative: Organic Photovoltaics Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Organic Photovoltaics Research to Organic Photovoltaics Research to someone by E-mail Share SunShot Initiative: Organic Photovoltaics Research on Facebook Tweet about SunShot Initiative: Organic Photovoltaics Research on Twitter Bookmark SunShot Initiative: Organic Photovoltaics Research on Google Bookmark SunShot Initiative: Organic Photovoltaics Research on Delicious Rank SunShot Initiative: Organic Photovoltaics Research on Digg Find More places to share SunShot Initiative: Organic Photovoltaics Research on AddThis.com... Concentrating Solar Power Photovoltaics Research & Development Crystalline Silicon Thin Films Multijunctions Organic Photovoltaics Dye-Sensitized Solar Cells Competitive Awards Systems Integration Balance of Systems Organic Photovoltaics Research Graphic showing the seven layers of an organic PV cell: electrode, donor, acceptor, active layer, PEDOT:PSS, transparent conductive oxide, and glass.

269

Concentrator Photovoltaic System Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Concentrator Photovoltaic System Basics Concentrator Photovoltaic System Basics Concentrator Photovoltaic System Basics August 20, 2013 - 4:12pm Addthis Concentrator photovoltaic (PV) systems use less solar cell material than other PV systems. PV cells are the most expensive components of a PV system, on a per-area basis. A concentrator makes use of relatively inexpensive materials such as plastic lenses and metal housings to capture the solar energy shining on a fairly large area and focus that energy onto a smaller area-the solar cell. One measure of the effectiveness of this approach is the concentration ratio-in other words, how much concentration the cell is receiving. Concentrator PV systems have several advantages over flat-plate systems. First, concentrator systems reduce the size or number of cells needed and

270

Photovoltaic Systems Assessment: An Integrated Perspective  

Science Conference Proceedings (OSTI)

Information from recent photovoltaic (PV) research and technology assessments was synthesized into a review of key planning, hardware, institutional, and operational issues. Researchers reviewed PV cell and module technologies, results from ongoing field tests of intermediate-size systems, and balance-of-system (non-PV components) costs for residential, intermediate, and central station applications. Cost-performance targets for PV systems in various locations were developed.

1983-09-01T23:59:59.000Z

271

NREL: Photovoltaics Research Home Page  

NLE Websites -- All DOE Office Websites (Extended Search)

Photo of Photovoltaic Solar Panels. Photo of Photovoltaic Solar Panels. Solar Installer Surveys DOE needs your input to reduce the "soft costs" of solar PV installations that impact your business. Complete the residential survey and commercial survey today! Photovoltaic (PV) research at the National Renewable Energy Laboratory (NREL) focuses on boosting solar cell conversion efficiencies, lowering the cost of solar cells, modules, and systems, and improving the reliability of PV components and systems. NREL's PV effort contributes to these goals through fundamental research, advanced materials and devices, and technology development. Our scientists are pursuing critical activities that will help to accomplish the goal of the U.S. Department of Energy's SunShot Initiative-to make large-scale solar energy systems cost-competitive with

272

NREL: Learning - Photovoltaics for Homes  

NLE Websites -- All DOE Office Websites (Extended Search)

Homes Homes Photo of solar panels on the roof of a traditional looking home in Colorado. Photovoltaic solar panels installed on the roof of a home in Boulder, Colorado. The following resources will help you install a photovoltaic (PV) system on your home. If you are unfamiliar with PV systems, see the introduction to PV. Resources American Solar Energy Society Provides consumers with information about solar energy and resources. Database of State Incentives for Renewables and Efficiency Provides information on state, local, utility, and selected federal incentives that promote renewable energy. Florida Solar Energy Center Provides basic information on photovoltaics for consumers. Own Your Power! A Consumer Guide to Solar Electricity The U.S. Department of Energy (DOE) answers consumer questions about PV and

273

Ballasted photovoltaic module and module arrays  

DOE Patents (OSTI)

A photovoltaic (PV) module assembly including a PV module and a ballast tray. The PV module includes a PV device and a frame. A PV laminate is assembled to the frame, and the frame includes an arm. The ballast tray is adapted for containing ballast and is removably associated with the PV module in a ballasting state where the tray is vertically under the PV laminate and vertically over the arm to impede overt displacement of the PV module. The PV module assembly can be installed to a flat commercial rooftop, with the PV module and the ballast tray both resting upon the rooftop. In some embodiments, the ballasting state includes corresponding surfaces of the arm and the tray being spaced from one another under normal (low or no wind) conditions, such that the frame is not continuously subjected to a weight of the tray.

Botkin, Jonathan (El Cerrito, CA); Graves, Simon (Berkeley, CA); Danning, Matt (Oakland, CA)

2011-11-29T23:59:59.000Z

274

SunShot Initiative: Photovoltaics  

NLE Websites -- All DOE Office Websites (Extended Search)

Photovoltaics Photovoltaics The U.S. Department of Energy (DOE) aggressively supports development of low-cost, high-efficiency photovoltaic (PV) technologies through the SunShot Initiative, which seeks to make solar electricity cost-competitive with other sources of energy by 2020. Get the Adobe Flash Player to see this video. Text Alternative The DOE SunShot Program advances PV efforts by: Funding research and development in multiple photovoltaic technologies Awarding funds to PV projects with industry partners like solar companies, universities, and national laboratories through a competitive process. Learn more about ways DOE is advancing concentrating solar power R&D, reducing grid integration costs and technology risks, and reducing soft costs associated with solar installations.

275

Solar PV Market Update: Volume 1 - Spring  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute (EPRI) Solar PV Market Update provides a snapshot of photovoltaic (PV) market information, along with brief EPRI analyses, to inform EPRI members about economic-, policy-, and technology-related developments in the segment. Delivered on a quarterly basis, the document synthesizes data reporting gleaned from a variety of primary and secondary sources, highlighting specific industry issuesincluding market outlooks, equipment cost and pricing trends, system design and e...

2012-05-21T23:59:59.000Z

276

Building Energy Software Tools Directory: Photovoltaics Economics  

NLE Websites -- All DOE Office Websites (Extended Search)

Photovoltaics Economics Calculator Photovoltaics Economics Calculator Web-based tool which allows you to describe your solar system in detail and provides a detailed breakdown of what sort of power you'll get out of it and how economical of a investment the system will be. It uses the TMY2 solar data from the NREL Renewable Resource Data Center. This calculator allows users to customize their setup, providing greater feedback on how much power is provided when, and most importantly, a detailed economics breakdown of how the investment works out. It also keeps track of battery charge states for off-grid users. Screen Shots Keywords solar, photovoltaic, economics Validation/Testing Validated against PVWatts, a widely recognized solar power output calculator. When given the exact same conditions, power production is

277

Austin Energy - Residential Solar PV Rebate Program | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

offers a 1.50 per watt incentive to eligible residential who install photovoltaic (PV) systems on their homes. Rebates are limited to 15,000 per home installation and...

278

Perspective on International PV Challenge & Opportunities for Rural Development  

DOE Green Energy (OSTI)

International market opportunities for the sale and deployment of photovoltaic (PV) systems abound and will continue to out-pace domestic, grid-connected opportunities for the foreseeable future.

Taylor, R. W.

2000-01-01T23:59:59.000Z

279

City of Sunset Valley - PV Rebate Program | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Amount 1.00W up to 3,000 W The City of Sunset Valley offers rebates to local homeowners who install photovoltaic (PV) systems on their properties. The local rebate acts as...

280

Taunton Municipal Lighting Plant- Residential PV Rebate Program  

Energy.gov (U.S. Department of Energy (DOE))

Customers of Taunton Municipal Lighting Plant (TMLP) may be eligible for $2.00/watt rebate on solar photovoltaic (PV) installations. The minimum system size eligible for this rebate is 1 kilowatt ...

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

NREL: Learning - Photovoltaics for Small Business  

NLE Websites -- All DOE Office Websites (Extended Search)

Photovoltaics for Small Business Photovoltaics for Small Business Photo of a factory with a photovoltaic system. This furniture factory in Massachusetts uses a photovoltaic system to generate its own electricity. The following resources will help your small business install a photovoltaic (PV) system. If you are unfamiliar with PV systems, see the introduction to PV. Resources American Solar Energy Society Provides consumers with information about solar energy and resources. Database of State Incentives for Renewables and Efficiency Provides information on state, local, utility, and selected federal incentives that promote renewable energy. Florida Solar Energy Center The Florida Solar Energy Center provides basic information on photovoltaics for consumers. Own Your Power! A Consumer Guide to Solar Electricity

282

Photovoltaic performance and reliability workshop  

DOE Green Energy (OSTI)

This workshop was the sixth in a series of workshops sponsored by NREL/DOE under the general subject of photovoltaic testing and reliability during the period 1986--1993. PV performance and PV reliability are at least as important as PV cost, if not more. In the US, PV manufacturers, DOE laboratories, electric utilities, and others are engaged in the photovoltaic reliability research and testing. This group of researchers and others interested in the field were brought together to exchange the technical knowledge and field experience as related to current information in this evolving field of PV reliability. The papers presented here reflect this effort since the last workshop held in September, 1992. The topics covered include: cell and module characterization, module and system testing, durability and reliability, system field experience, and standards and codes.

Mrig, L. [ed.

1993-12-01T23:59:59.000Z

283

Assessing the Performance of LED-Based Flashlights Available in the Kenyan Off-Grid Lighting Market  

SciTech Connect

Low cost rechargeable flashlights that use LED technology are increasingly available in African markets. While LED technology holds promise to provide affordable, high quality lighting services, the widespread dissemination of low quality products may make it difficult to realize this potential. This study includes performance results for three brands of commonly available LED flashlights that were purchased in Kenya in 2009. The performance of the flashlights was evaluated by testing five units for each of the three brands. The tests included measurements of battery capacity, time required to charge the battery, maximum illuminance at one meter, operation time and lux-hours from a fully charged battery, light distribution, and color rendering. All flashlights tested performed well below the manufacturers? rated specifications; the measured battery capacity was 30-50percent lower than the rated capacity and the time required to fully charge the battery was 6-25percent greater than the rated time requirement. Our analysis further shows that within each brand there is considerable variability in each performance indicator. The five samples within a single brand varied from each other by as much as 22percent for battery capacity measurements, 3.6percent for the number of hours required for a full charge, 23percent for maximum initial lux, 38percent for run time, 11percent for light distribution and by as much as 200percent for color rendering. Results obtained are useful for creating a framework for quality assurance of off-grid LED products and will be valuable for informing consumers, distributors and product manufacturers about product performance.

Tracy, Jennifer; Jacobson, Arne; Mills, Evan

2010-03-02T23:59:59.000Z

284

photovoltaic | OpenEI  

Open Energy Info (EERE)

photovoltaic photovoltaic Dataset Summary Description Global PV grid parity and market potential. Data is courtesy of Sean Ong. Source National Renewable Energy Laboratory Date Released Unknown Date Updated Unknown Keywords grid Parity Payback photovoltaic price PV Residential Data text/csv icon globalgridparity.csv (csv, 4.8 KiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Time Period License License Creative Commons CCZero Comment Rate this dataset Usefulness of the metadata Average vote Your vote Usefulness of the dataset Average vote Your vote Ease of access Average vote Your vote Overall rating Average vote Your vote Comments Login or register to post comments If you rate this dataset, your published comment will include your rating.

285

Photovoltaic Energy Technology Module | Open Energy Information  

Open Energy Info (EERE)

Photovoltaic Energy Technology Module Photovoltaic Energy Technology Module Jump to: navigation, search Tool Summary Name: Photovoltaic Energy Technology Module Agency/Company /Organization: World Bank Sector: Energy Focus Area: Renewable Energy, Solar Topics: Technology characterizations Website: web.worldbank.org/WBSITE/EXTERNAL/TOPICS/EXTENERGY2/EXTRENENERGYTK/0,, References: Photovoltaic Energy Technology Module[1] Resources Portable Solar Photovoltaic Lanterns: Performance and Certification Specification, and Type Approval, ESMAP TECHNICAL PAPER 078 Testing of Storage Batteries used in Stand Alone Photovoltaic Power Systems, Test procedures and examples of test results Technical Specifications for Solar Home Systems (SHS), Rural Electrification and Renewable Energy Development (PV Component) Project

286

Design and Optimization of Photovoltaics Recycling Infrastructure  

Science Conference Proceedings (OSTI)

With the growing production and installation of photovoltaics (PV) around the world constrained by the limited availability of resources, end-of-life management of PV is becoming very important. A few major PV manufacturers currently are operating several PV recycling technologies at the process level. The management of the total recycling infrastructure, including reverse-logistics planning, is being started in Europe. In this paper, we overview the current status of photovoltaics recycling planning and discuss our mathematic modeling of the economic feasibility and the environmental viability of several PV recycling infrastructure scenarios in Germany; our findings suggest the optimum locations of the anticipated PV take-back centers. Short-term 5-10 year planning for PV manufacturing scraps is the focus of this article. Although we discuss the German situation, we expect the generic model will be applicable to any region, such as the whole of Europe and the United States.

Choi, J.K.; Fthenakis, V.

2010-10-01T23:59:59.000Z

287

Introduction of Break-Out Session 2 of the 2011 International PV Module Quality Assurance Forum(Presentation)  

Science Conference Proceedings (OSTI)

This presentation outlines the goals and specific tasks of break-out session 2 of the 2011 International PV Module Quality Assurance Forum, along with a review of accelerated stress tests used for photovoltaics (PV).

Wohlgemuth, J.; Kurtz, S.; Sample, T.; Yamamichi, M.

2011-07-01T23:59:59.000Z

288

Quantify Degradation Rates and Mechanisms of PV Modules and Systems Installed in Florida Through Comprehensive Experimental and Theoretical Analysis (Poster)  

Science Conference Proceedings (OSTI)

The economic viability of photovoltaic (PV) technologies is inextricably tied to both the electrical performance and degradation rate of the PV systems, which are the generators of electrical power in PV systems. Over the past 15 years, performance data have been collected on numerous PV systems installed throughout the state of Florida and will be presented.

Sorloaica-Hickman, N.; Davis, K.; Kurtz, S.; Jordan, D.

2011-02-01T23:59:59.000Z

289

PROGRESS IN PHOTOVOLTAICS: RESEARCH AND APPLICATIONS Prog. Photovolt: Res. Appl. 2009; 17:1133  

E-Print Network (OSTI)

on PV magazine PHOTON International.3 The modules in reliability by government laboratories, third-plate terrestrial photovoltaic (PV) modules. An important facet of this subject is the standard module test of photovoltaics (PV) following such as accelerated temperature and humidity stresses the invention of the silicon

290

Evolutionary algorithms for the design of grid-connected PV-systems  

Science Conference Proceedings (OSTI)

The sale of electric energy generated by photovoltaic (PV) plants has attracted much attention in recent years. The installation of PV plants aims to obtain the maximum benefit of captured solar energy. The current methodologies for planning the design ... Keywords: Differential evolution, Evolutionary algorithms, Numerical optimization, Photovoltaic plants

Daniel Gmez-Lorente; Isaac Triguero; Consolacin Gil; A. Espn Estrella

2012-07-01T23:59:59.000Z

291

Department of Energy: Photovoltaics program - FY 1996  

DOE Green Energy (OSTI)

The National Photovoltaic Program supports efforts to make PV an important part of the US economy through three main program elements: Research and Development, Technology Development, and Systems Engineering and Applications. (1) Research and Development activities generate new ideas, test the latest scientific theories, and push the limits of PV efficiencies in laboratory and prototype materials and devices. (2) Technology Development activities apply laboratory innovations to products to improve PV technology and the manufacturing techniques used to produce PV systems for the market. (3) Systems Engineering and Applications activities help improve PV systems and validate these improvements through tests, measurements, and deployment of prototypes. In addition, applications research validates, sales, maintenance, and financing mechanisms worldwide. (4) Environmental, Health, Safety and Resource Characterization activities help to define environmental, health and safety issues for those facilities engaged in the manufacture of PV products and organizations engaged in PV research and development. All PV Program activities are planned and executed in close collaboration and partnership with the U.S. PV industry. The overall PV Program is planned to be a balanced effort of research, manufacturing development, and market development. Critical to the success of this strategy is the National Photovoltaic Program`s effort to reduce the cost of electricity generated by photovoltaic. The program is doing this in three primary ways: by making devices more efficient, by making PV systems less expensive, and by validating the technology through measurements, tests, and prototypes.

NONE

1996-12-31T23:59:59.000Z

292

PV FAQs: What's New in Concentrating PV?  

DOE Green Energy (OSTI)

This publication, one in a series of PV FAQs, addresses concentrating PV: what it is, how it works, the challenges it faces, recent breakthroughs, and its future direction.

Not Available

2005-02-01T23:59:59.000Z

293

Dynamic reconfiguration of photovoltaic energy harvesting system in hybrid electric vehicles  

Science Conference Proceedings (OSTI)

Photovoltaic (PV) energy harvesting system is a promising energy source for battery replenishment in hybrid electric vehicles (HEVs.) The PV cell array is installed on different parts of a vehicle body such as the engine hood, door panels, and the roof ... Keywords: dynamic programming., hybrid electric vehicle, photovoltaic array reconfiguration, photovoltaic system

Yanzhi Wang; Xue Lin; Naehyuck Chang; Massoud Pedram

2012-07-01T23:59:59.000Z

294

Tracking the Sun IV: An Historical Summary of the Installed Cost of Photovoltaics in the United States from 1998 to 2010  

E-Print Network (OSTI)

indicative of SREC prices that PV projects would receiveSolar Photovoltaic (PV) System Prices in the United States.average wholesale PV module prices in each year. Over the

Darghouth, Naim

2012-01-01T23:59:59.000Z

295

Exact Sizing of Battery Capacity for Photovoltaic Systems  

E-Print Network (OSTI)

Exact Sizing of Battery Capacity for Photovoltaic Systems Yu Rua , Jan Kleisslb , Sonia Martinezb a study battery sizing for grid-connected photovoltaic (PV) systems. In our setting, PV generated, it is stored in a battery (as long as the battery is not fully charged), which has a fixed maximum charging

Martínez, Sonia

296

Performance Analysis of Photovoltaic Cell with Dynamic PHEV Loads  

E-Print Network (OSTI)

Performance Analysis of Photovoltaic Cell with Dynamic PHEV Loads F. R. Islam, H. R. Pota, M. S. Rahman and M. S. Ali Abstract--This paper presents the dynamics of photovoltaic (PV) cell with Plug for charging PHEVs with PV cell where PHEVs load are modelled based on third order battery model. System

Pota, Himanshu Roy

297

Photovoltaic Technology Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Photovoltaic Technology Basics Photovoltaic Technology Basics Photovoltaic Technology Basics August 16, 2013 - 4:47pm Addthis Text Version Photovoltaic (PV) materials and devices convert sunlight into electrical energy, and PV cells are commonly known as solar cells. Photovoltaics can literally be translated as light-electricity. First used in about 1890, "photovoltaic" has two parts: photo, derived from the Greek word for light, and volt, relating to electricity pioneer Alessandro Volta. And this is what photovoltaic materials and devices do-they convert light energy into electrical energy, as French physicist Edmond Becquerel discovered as early as 1839. Becquerel discovered the process of using sunlight to produce an electric current in a solid material. But it took more than another century to truly

298

Commercialization of PV-powered pumping systems for use in utility PV service programs. Final report  

DOE Green Energy (OSTI)

The project described in this report was a commercialization effort focused on cost-effective remote water pumping systems for use in utility-based photovoltaic (PV) service programs. The project combined a commercialization strategy tailored specifically for electric utilities with the development of a PV-powered pumping system that operates conventional ac pumps rather than relying on the more expensive and less reliable PV pumps on the market. By combining these two attributes, a project goal was established of creating sustained utility purchases of 250 PV-powered water pumping systems per year. The results of each of these tasks are presented in two parts contained in this Final Summary Report. The first part summarizes the results of the Photovoltaic Services Network (PSN) as a new business venture, while the second part summarizes the results of the Golden Photon system installations. Specifically, results and photographs from each of the system installations are presented in this latter part.

NONE

1997-03-01T23:59:59.000Z

299

NREL: Learning - Solar Photovoltaic Technology Basics  

NLE Websites -- All DOE Office Websites (Extended Search)

Solar Photovoltaic Technology Basics Solar Photovoltaic Technology Basics Content on this page requires a newer version of Adobe Flash Player. Get Adobe Flash player This video provides an overview of NREL's research in solar photovoltaic technology. Text Version Solar cells, also called photovoltaic (PV) cells by scientists, convert sunlight directly into electricity. PV gets its name from the process of converting light (photons) to electricity (voltage), which is called the PV effect. The PV effect was discovered in 1954, when scientists at Bell Telephone discovered that silicon (an element found in sand) created an electric charge when exposed to sunlight. Soon solar cells were being used to power space satellites and smaller items like calculators and watches. Today, thousands of people power their homes and businesses with individual

300

Types of Silicon Used in Photovoltaics  

Energy.gov (U.S. Department of Energy (DOE))

Siliconused to make some the earliest photovoltaic (PV) devicesis still the most popular material for solar cells. Silicon is also the second-most abundant element in the Earth's crust (after...

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Juice from solar concentrate [photovoltaic collector  

Science Conference Proceedings (OSTI)

Conventional photovoltaic (PV) panels made from silicon to provide electricity to office buildings and homes are still too expensive. Unless they are heavily subsidized, it rarely makes sense to install them where electricity is available from the grid. ...

P. Patel-Predo

2005-10-01T23:59:59.000Z

302

Sawnee EMC- Solar Photovoltaic Rebate Program  

Energy.gov (U.S. Department of Energy (DOE))

Sawnee EMC offers a rebate of $300 per kilowatt (kW) to residential customers who install photovoltaic (PV) systems that meet the cooperative's [http://www.sawnee.com/Rate%20Pdfs/NEM%20Rider.pdf...

303

Energy Basics: Photovoltaic Cell Quantum Efficiency  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

by a photovoltaic (PV) cell to the number of photons-or packets of light-of a given energy shining on the solar cell. Quantum efficiency therefore relates to the response of a...

304

Photovoltaics Using Doped and Undoped Amorphous Silicon ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Polymer based photovoltaic (PV) technology is an exciting ... this area are few and there is a need for in-depth analysis of Si-organic interfaces.

305

Smart grid adds value to solar photovoltaics  

Science Conference Proceedings (OSTI)

This panel session examines the challenges and opportunities of integrating large scale solar photovoltaic units into the electric power grid. As large solar PV projects (hundreds of MW) come online, their output variation due to weather changes will ...

2012-01-01T23:59:59.000Z

306

Silicon cast wafer recrystallization for photovoltaic applications  

E-Print Network (OSTI)

Current industry-standard methods of manufacturing silicon wafers for photovoltaic (PV) cells define the electrical properties of the wafer in a first step, and then the geometry of the wafer in a subsequent step. The ...

Hantsoo, Eerik T. (Eerik Torm)

2008-01-01T23:59:59.000Z

307

Economic analysis of PV hybrid power system: Pinnacles National Monument  

DOE Green Energy (OSTI)

PV hybrid electric power systems can offer an economically competitive alternative to engine generator (genset) systems in many off-grid applications. Besides the obvious `green` advantages of producing less noise and emissions, the PV hybrid can, in some cases, offer a lower life-cycle cost (LCC) then the genset. This paper evaluates the LCC of the 9.6 kWp PV hybrid power system installed by the National Park Services (NPS) at Pinnacles National Monument, CA. NPS motivation for installation of this hybrid was not based on economics, but rather the need to replace two aging diesel gensets with an alternative that would be quieter, fuel efficient, and more in keeping with new NPS emphasis on sustainable design and operations. In fact, economic analysis shows a lower 20-year LCC for the installed PV hybrid than for simple replacement of the two gensets. The analysis projects are net savings by the PV hybrid system of $83,561 and over 162,000 gallons of propane when compared with the genset-only system. This net savings is independent of the costs associated with environmental emissions. The effects of including emissions costs, according to NPS guidelines, is also discussed. 5 refs., 2 figs., 3 tabs.

Rosenthal, A.; Durand, S. [Southwest Technology Development Institute, Las Cruces, NM (United States); Thomas, M.; Post, H. [Sandia National Labs., Albuquerque, NM (United States)

1997-11-01T23:59:59.000Z

308

Photovoltaic System Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

System Basics System Basics Photovoltaic System Basics August 20, 2013 - 4:00pm Addthis A photovoltaic (PV), or solar electric system, is made up of several photovoltaic solar cells. An individual PV cell is usually small, typically producing about 1 or 2 watts of power. To boost the power output of PV cells, they are connected together to form larger units called modules. Modules, in turn, can be connected to form even larger units called arrays, which can be interconnected to produce more power, and so on. In this way, PV systems can be built to meet almost any electric power need, small or large. Illustration of solar cells combined to make a module and modules combined to make an array. The basic PV or solar cell produces only a small amount of power. To produce more power, cells can be interconnected to

309

Photovoltaic Subcontract Program. Annual report, FY 1992  

DOE Green Energy (OSTI)

This report summarizes the fiscal year (FY) 1992 progress of the subcontracted photovoltaic (PV) research and development (R&D) performed under the Photovoltaic Advanced Research and Development Project at the National Renewable Energy Laboratory (NREL)-formerly the Solar Energy Research Institute (SERI). The mission of the national PV program is to develop PV technology for large-scale generation of economically competitive electric power in the United States. The technical sections of the report cover the main areas of the subcontract program: the Crystalline Materials and Advanced Concepts project, the Polycrystalline Thin Films project, Amorphous Silicon Research project, the Photovoltaic Manufacturing Technology (PVMaT) project, PV Module and System Performance and Engineering project, and the PV Analysis and Applications Development project. Technical summaries of each of the subcontracted programs provide a discussion of approaches, major accomplishments in FY 1992, and future research directions.

Not Available

1993-03-01T23:59:59.000Z

310

DOE High Performance Concentrator PV Project  

DOE Green Energy (OSTI)

Much in demand are next-generation photovoltaic (PV) technologies that can be used economically to make a large-scale impact on world electricity production. The U.S. Department of Energy (DOE) initiated the High-Performance Photovoltaic (HiPerf PV) Project to substantially increase the viability of PV for cost-competitive applications so that PV can contribute significantly to both our energy supply and environment. To accomplish such results, the National Center for Photovoltaics (NCPV) directs in-house and subcontracted research in high-performance polycrystalline thin-film and multijunction concentrator devices with the goal of enabling progress of high-efficiency technologies toward commercial-prototype products. We will describe the details of the subcontractor and in-house progress in exploring and accelerating pathways of III-V multijunction concentrator solar cells and systems toward their long-term goals. By 2020, we anticipate that this project will have demonstrated 33% system efficiency and a system price of $1.00/Wp for concentrator PV systems using III-V multijunction solar cells with efficiencies over 41%.

McConnell, R.; Symko-Davies, M.

2005-08-01T23:59:59.000Z

311

Photovoltaics and the Environment  

DOE Green Energy (OSTI)

Over the past five years, solar energy usage has grown by about 43 percent a year, giving rise to a billion-dollar industry in photovoltaics (PV) or getting electricity from light. The word photovoltaics combines the Greek phos, or light, with the volt of electricity. PV technologies have distinct environmental advantages over conventional power technologies, such as: no noise, no emissions, no need for fuel and power lines. Compared to burning coal, a gigawatt-hour of PV-generated electricity would prevent the release of about 1,000 tons of carbon dioxide, eight of sulfur dioxide, four of nitrogen oxides, and 0.4 tons of particulates. However, manufacturing the solar cells that transform light to electricity requires the use of some toxic and flammable substances. Addressing the environmental, health, and safety concerns of the PV industry to minimize risk while ensuring economic viability and public support is the work of the National Photovoltaic Environmental Health, & Safety Assistance Center at BNL.

Fthenakis, Vasilis (BNL Environmental Sciences)

2005-09-21T23:59:59.000Z

312

Photovoltaic Subcontract Program, FY 1991  

DOE Green Energy (OSTI)

This report summarizes the fiscal year (FY) 1991 (October 1, 1990, through September 30, 1991) progress of the subcontracted photovoltaic (PV) research and development (R D) performed under the Photovoltaic Advanced Research and Development Project at the National Renewable Energy Laboratory (NREL) -- formerly the Solar Energy Research Institute (SERI). The mission of the national PV program is to develop PV technology for large-scale generation of economically competitive electric power in the United States. The technical sections of the report cover the main areas of the subcontract program: the Amorphous Silicon Research Project, Polycrystalline Thin Films, Crystalline Silicon Materials Research, High-Efficiency Concepts, the New Ideas Program, the University Participation Program, and the Photovoltaic Manufacturing Technology (PVMaT) project. Technical summaries of each of the subcontracted programs provide a discussion of approaches, major accomplishments in FY 1991, and future research directions.

Not Available

1992-03-01T23:59:59.000Z

313

Identifying Critical Pathways to High-Performance PV: Preprint  

DOE Green Energy (OSTI)

This conference paper describes the High-Performance Photovoltaic (HiPerf PV)Project was initiated by the U.S. Department of Energy to substantially increase the viability of photovoltaics (PV) for cost-competitive applications so that PV can contribute significantly to our energy supply and our environment in the 21st century. To accomplish this, the NCPV directs in-house and subcontracted research in high-performance polycrystalline thin-film and multijunction concentrator devices. Details of the subcontractor and in-house progress will be described toward identifying critical pathways of 25% polycrystalline thin-film tandem cells and developing multijunction concentrator modules to 33%.

Symko-Davies, M.; Noufi, R.; Kurtz, S.

2002-05-01T23:59:59.000Z

314

PMMA Acrylic in a Stress-Response Framework for PV Materials  

E-Print Network (OSTI)

PMMA Acrylic in a Stress-Response Framework for PV Materials Laura S. Bruckman Materials Science, VuGraph 2 Motivation: Lifetime & Degradation Science for Photovoltaics Need scientific basis for PV, components, systems for PV · System lifetime performance Determine degradation modes, mechanisms and rates

Rollins, Andrew M.

315

Optimal Design of Hybrid Energy System with PV/ Wind Turbine/ Storage: A Case Study  

E-Print Network (OSTI)

Optimal Design of Hybrid Energy System with PV/ Wind Turbine/ Storage: A Case Study Rui Huang development of photovoltaic (PV), wind turbine and battery technologies, hybrid energy system has received of the hybrid energy system that consists of PV arrays, wind turbines and battery storage and use that to define

Low, Steven H.

316

Energy 101: Solar Photovoltaics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

101: Solar Photovoltaics 101: Solar Photovoltaics Energy 101: Solar Photovoltaics February 10, 2011 - 5:29pm Addthis Learn more about photovoltaic systems that convert light energy into electricity. Andy Oare Andy Oare Former New Media Strategist, Office of Public Affairs What are the key facts? The literal translation of the word photovoltaic is light-electricity. Photovoltaic systems generate power without pollution - and recent advancements have greatly increased their efficiency. Enough energy from the sun hits the earth every hour to power the planet for an entire year-and solar photovoltaic (PV) systems are a clean, cost-effective way to harness that power for homes and businesses. The literal translation of the word photovoltaic is light-electricity-and this is exactly what photovoltaic materials and devices do-they convert

317

Impact of High-Penetration PV on Distribution System Performance: Example Cases and Analysis Approach  

Science Conference Proceedings (OSTI)

High penetration of distributed photovoltaic (PV) generation in the electric grid is beginning to challenge distribution planners and engineers. This technical update discusses the factors that can have a significant impact on a distribution feeder's response to PV generation. The report considers both the circuit and the photovoltaic generation characteristics. The circuit types and characteristics span the expected range of power delivery and control elements. Photovoltaic characteristics include syste...

2011-12-30T23:59:59.000Z

318

PV cell and module performance measurement capabilities at NREL  

DOE Green Energy (OSTI)

The Photovoltaic (PV) Cell and Module Performance Characterization team at NREL supports the entire photovoltaic community by providing: secondary calibrations of photovoltaic cells and modules; efficiency measurements with respect to a given set of standard reporting conditions; verification of contract efficiency milestones; and current versus voltage (I-V) measurements under various conditions of temperature, spectral irradiance, and total irradiance. Support is also provided to in-house programs in device fabrication, module stability, module reliability, PV systems evaluations, and alternative rating methods by performing baseline testing, specialized measurements and other assistance when required. The I-V and spectral responsivity equipment used to accomplish these tasks are described in this paper.

Rummel, S.; Emery, K.; Field, H.; Moriarty, T.; Anderberg, A.; Dunlavy, D.; Ottoson, L.

1998-09-01T23:59:59.000Z

319

Case Studies of Grid-Connected Photovoltaic Systems, Volume 3  

Science Conference Proceedings (OSTI)

The photovoltaics industry is growing rapidly, and photovoltaic (PV) power is likely to become an increasingly significant source of distributed generation as its cost declines over the next ten years. This report completes a series of three volumes documenting more than a dozen grid-connected PV case studies in all and covering a broad range of system configurations and project types. The report provides field experience useful to improve the design of future PV systems and identifies problems that need...

2004-03-30T23:59:59.000Z

320

Comparison of Predictive Models for Photovoltaic Module Performance: Preprint  

DOE Green Energy (OSTI)

This paper examines three models used to estimate the performance of photovoltaic (PV) modules when the irradiances and PV cell temperatures are known. The results presented here were obtained by comparing modeled and measured maximum power (Pm) for PV modules that rely on different technologies.

Marion, B.

2008-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

SURVEILLANCE OF PHOTOVOLTAIC SOLAR ENERGY SYSTEMS USING METEOSAT DERIVED IRRADIANCES  

E-Print Network (OSTI)

which allow for a cheap and reliable check of the power production of grid connected PV systems. These checks are done by calculating the estimated output of the PV system with a simulation-model. The model Utrecht ABSTRACT In this paper, we describe a surveillance procedure for grid connected photovoltaic (PV

Heinemann, Detlev

322

Photovoltaic System Performance Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

System Performance Basics System Performance Basics Photovoltaic System Performance Basics August 20, 2013 - 4:17pm Addthis Photovoltaic (PV) systems are usually composed of numerous solar arrays, which in turn, are composed of numerous PV cells. The performance of the system is therefore dependent on the performance of its components. Reliability The reliability of PV arrays is an important factor in the cost of PV systems and in consumer acceptance. However, the building blocks of arrays, PV cells, are considered "solid-state" devices with no moving parts and, therefore, are highly reliable and long-lived. Therefore, reliability measurements of PV systems are usually focused not on cells but on modules and whole systems. Reliability can be improved through fault-tolerant circuit design, which

323

Environmental impacts of large-scale grid-connected ground-mounted PV installations  

E-Print Network (OSTI)

,6]. They highlighted the photovoltaic potential for a low carbon energy supply and the environmental benefits of PV comparison of energy supply options. 21st European Photovoltaic Solar Energy Conference. 2006. [8] IEA European Photovoltaic Energy Conference. 2008. [12] D. Beloin-Saint-Pierre, I. Blanc, J. Payet, P. Jacquin

324

Photovoltaic system reliability  

SciTech Connect

This paper discusses the reliability of several photovoltaic projects including SMUD`s PV Pioneer project, various projects monitored by Ascension Technology, and the Colorado Parks project. System times-to-failure range from 1 to 16 years, and maintenance costs range from 1 to 16 cents per kilowatt-hour. Factors contributing to the reliability of these systems are discussed, and practices are recommended that can be applied to future projects. This paper also discusses the methodology used to collect and analyze PV system reliability data.

Maish, A.B.; Atcitty, C. [Sandia National Labs., NM (United States); Greenberg, D. [Ascension Technology, Inc., Lincoln Center, MA (United States)] [and others

1997-10-01T23:59:59.000Z

325

Photovoltaic manufacturing technology  

DOE Green Energy (OSTI)

This report identifies steps leading to manufacturing large volumes of low-cost, large-area photovoltaic (PV) modules. Both crystalline silicon and amorphous silicon technologies were studied. Cost reductions for each step were estimated and compared to Solarex Corporation's manufacturing costs. A cost model, a simple version of the SAMICS methodology developed by the Jet Propulsion Laboratory (JPL), projected PV selling prices. Actual costs of materials, labor, product yield, etc., were used in the cost model. The JPL cost model compared potential ways of lowering costs. Solarex identified the most difficult technical challenges that, if overcome, would reduce costs. Preliminary research plans were developed to solve the technical problems. 13 refs.

Wohlgemuth, J.H.; Whitehouse, D.; Wiedeman, S.; Catalano, A.W.; Oswald, R. (Solarex Corp., Frederick, MD (United States))

1991-12-01T23:59:59.000Z

326

Analysis and Design of Smart PV Module  

E-Print Network (OSTI)

This thesis explores the design of a smart photovoltaic (PV) module- a PV module in which PV cells in close proximity are electrically grouped to form a pixel and are connected to dc-dc converter blocks which reside embedded in the back pane of the module. An auto-connected flyback converter topology processing less than full power is used to provide high gain and perform maximum power point tracking (MPPT). These dc-dc converters interface with cascaded H-bridge inverter modules operating on feed forward control for dc-link voltage ripple rejection. By means of feed forward control, a significant reduction in dc link capacitance is achieved by enduring higher dc link ripple voltages. The dc link electrolytic capacitors are replaced with film capacitors thus offering an improvement in the reliability of the smart PV module. The proposed configuration is capable of producing 120V/ 240V AC voltage. The PV module now becomes a smart AC module by virtue of embedded intelligence to selectively actuate the individual dc-dc converters and control the output AC voltages directly, thus becoming a true plug and power energy system. Such a concept is ideal for curved surfaces such as building integrated PV (BIPV) system applications where gradients of insolation and temperature cause not only variations from PV module-to-PV module but from group-to-group of cells within the module itself. A detailed analysis along with simulation and experimental results confirm the feasibility of the proposed system.

Mazumdar, Poornima

2012-12-01T23:59:59.000Z

327

Solar Photovoltaic Technology Update - 2005  

Science Conference Proceedings (OSTI)

This report surveys the state of the solar photovoltaic (PV) industry in the United States and worldwide in 2005. The installed capacity of PV has continued recent trends and has increased dramatically in 20058212particularly in Germany and Japan, where government policies encourage its deployment, and to a lesser extent in the United States8212while at the same time manufacturers and vendors continued to make incremental performance improvements. In some markets, shortages of silicon feedstock or finish...

2006-03-28T23:59:59.000Z

328

Photovoltaics Fact Sheet Harvard Green Campus Initiative  

E-Print Network (OSTI)

at Harvard (the Science Center PV). They provide turnkey services under a design/build contract. Solar DesignSolar Glass Fact Sheet Harvard Green Campus Initiative What is Solar Glass? Solar glass is a type of thin-film or building-integrated photovoltaic (PV) panel. It incorporates amorphous silicon (a type

Paulsson, Johan

329

Theoretical efficiency and asymptotic cost of grid-connected photovoltaic systems  

Science Conference Proceedings (OSTI)

Photovoltaics (PV) are regarded as a clean source energy technology and their use has expanded dramatically in recent years for both commercial and residential sectors. Learning curve studies show that PV modules have experienced very rapid reductions ...

Yan Yang; Eric Williams

2009-05-01T23:59:59.000Z

330

Interplay of oxygen-evolution kinetics and photovoltaic power curves on the construction of artificial leaves  

E-Print Network (OSTI)

An artificial leaf can perform direct solar-to-fuels conversion. The construction of an efficient artificial leaf or other photovoltaic (PV)-photoelectrochemical device requires that the power curve of the PV material and ...

Surendranath, Yogesh

331

Photovoltaic Potential and Insolation Maps (Canada) | Open Energy  

Open Energy Info (EERE)

Photovoltaic Potential and Insolation Maps (Canada) Photovoltaic Potential and Insolation Maps (Canada) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Photovoltaic Potential and Insolation Maps (Canada) Focus Area: Renewable Energy Topics: Potentials & Scenarios Website: glfc.cfsnet.nfis.org/mapserver/pv/pvmapper.phtml?LAYERS=2700,2701,2057 Equivalent URI: cleanenergysolutions.org/content/photovoltaic-potential-and-insolation Language: English Policies: Regulations Regulations: Net Metering & Interconnection These interactive maps give estimates of the electricity that can be generated by grid-connected photovoltaic (PV) arrays without batteries and of the mean daily global insolation for any location in Canada. Insolation data was provided by the Data Analysis and Archive Division, Meteorological

332

Photovoltaic industry progress through 1984  

DOE Green Energy (OSTI)

The growth of the US photovoltaics (PV) industry over the past decade has been impressive. First designed to provide power for satellites using high-cost production techniques, PV is now the economical choice in many remote terrestrial applications. The remarkable growth of PV in terms of quality of cells and modules, production techniques, and system design, was initiated by a cooperative effort of the US Government and the domestic PV manufacturers. European and Japanese firms entered the PV industry later, but are also growing rapidy. The Europeans continue to supply PV systems for village electrification and water pumping to many Third World countries. The Japanese have been developing the amorphous silicon (A-Si) technology by expanding its use in consumer goods. The world PV industry saw dramatic changes in industry ownership and in the emphasis on developing new and improved technology during 1984. The objective of this report is to present information on the developments of the world PV industry and focuses on developments occurring in 1984. Information is presented on a regional basis (US, Europe, Japan, other) to avoid disclosing company-confidential data. All information was gleaned from several sources, including a review of the technical literature and direct contacts with PV manufacturers. Prior to publishing the regional totals, all numbers were compared with those of other sources. The information contained in this report is prepared for use by the Department of Energy for their use in long-term R and D planning. However, this information should also be of interest by PV manufacturers and to those who may be contemplating entering the PV market. PV shipments for 1984, government supports for PV, and various PV market sectors are discussed.

Watts, R.L.; Smith, S.A.; Dirks, J.A.

1985-04-01T23:59:59.000Z

333

Quality Assurance for Photovoltaic Ryan Wiser, Berkeley Lab  

E-Print Network (OSTI)

Support for Renewable Energy September 2002 CASE STUDY DETAILS The photovoltaics (PV) industry has long to Quality Assurance for Photovoltaic Systems 2 #12;Case Studies of State Support for Renewable Energy.focusonenergy.com/ Quality Assurance for Photovoltaic Systems 5 #12;Case Studies of State Support for Renewable Energy

334

Cost calculation algorithm for stand-alone photovoltaic systems  

Science Conference Proceedings (OSTI)

Photovoltaics are the technology that generates direct current (DC) electrical power measured in watts or kilowatts from semiconductors when they are illuminated by photons. Photovoltaics are the technological symbol for a future sustainable energy supply ... Keywords: PV system design, life cycle cost, photovoltaic cell, present worth, software, unit energy cost

Irfan Gney; Nevzat Onat; Gkhan Koyi?it

2009-07-01T23:59:59.000Z

335

Stanford Green Dorm Project --Photovoltaic Mini-Report --  

E-Print Network (OSTI)

, and promotional purposes. Technology Overview Photovoltaic (PV) cells are semiconductor devices that convert light and the overall installation of modules is called an array. Diagram of photovoltaic cell. (httpStanford Green Dorm Project -- Photovoltaic Mini-Report -- Paul Kreiner ­ May 7, 2004 Purpose PVs

Krothapalli, Anjaneyulu

336

Solar Photovoltaic System Operations and Maintenance  

Science Conference Proceedings (OSTI)

Grid-connected flat plate solar photovoltaic (PV) systems are being deployed at an accelerating rate worldwide. Representing a growing absolute share of both independent power producer (IPP) and utility generation portfolios, these PV assets are now commanding a greater level of attention to ensure their optimal availability and performance. Contrary to popular belief, PV power plants are not maintenance free; in fact, they require a steady diet of scheduled preventive maintenance and unscheduled service...

2011-12-22T23:59:59.000Z

337

Solar Photovoltaics Market Update, Volume 3: Fall  

Science Conference Proceedings (OSTI)

Volume 3 of EPRIs quarterly Solar PV Market Update provides continued insight into some of the front line trends that are afoot throughout the photovoltaic segment. Like previous Updates, it synthesizes primary as well as secondary data from multiple sources in an effort to highlight both macro and micro industry developments that are likely to impact utility solar PV investment and planning efforts. Specifically, this report offers an account of recent PV pricing and cost trends, an apparent ...

2012-10-30T23:59:59.000Z

338

Monitoring of Photovoltaic Plant Output and Variability  

Science Conference Proceedings (OSTI)

The performance of photovoltaic (PV) systems, including variability characteristics, is of increasing interest to utilities as they integrate more solar energy onto the electric grid. This study is part of a multi-year research series to investigate influencing factors that affect PV plant output, variability, and approaches to system management. It explores PV variability both from a grid perspective and through examination of project design aspects that can affect annual power production. ...

2012-12-12T23:59:59.000Z

339

Visualisation of photovoltaic clad buildings  

Science Conference Proceedings (OSTI)

Architectural composition in the electronic design studio: conceptual design using CAD visualisation and virtual reality modelling - Dobson, A. Comput. Aided Archit. Design Unit, Luton Univ., UKThe paper describes a study carried out to investigate the ... Keywords: PV integrated buildings, aesthetic implications, architectural CAD, building material, computer aided design software, computer visualisationIEEE Conference on Information Visualisation (IV '97), facade architecture, photovoltaic cells, photovoltaic clad buildings, refurbished buildings, visualisation

M. Horne; R. Hill; C. Underwood

1997-08-01T23:59:59.000Z

340

Status of High Performance PV: Polycrystalline Thin-Film Tandems  

DOE Green Energy (OSTI)

The High-Performance Photovoltaic (HiPerf PV) Project was initiated by the U.S. Department of Energy to substantially increase the viability of photovoltaics (PV) for cost-competitive applications so that PV can contribute significantly to our energy supply and our environment. The HiPerf PV Project aims at exploring the ultimate performance limits of existing PV technologies, approximately doubling their sunlight-to-electricity conversion efficiencies during its course. This work includes bringing thin-film cells and modules toward 25% and 20% efficiencies, respectively, and developing multijunction concentrator cells and modules able to convert more than one-third of the sun's energy to electricity (i.e., 33% efficiency). This paper will address recent accomplishments of the NREL in-house research effort involving polycrystalline thin-film tandems, as well as the research efforts under way in the subcontracted area.

Symko-Davies, M.

2005-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

NREL: Learning - Photovoltaics for Electricity Providers  

NLE Websites -- All DOE Office Websites (Extended Search)

Photovoltaics for Electricity Providers Photovoltaics for Electricity Providers Photo of a photovoltaic system in Virginia. This 15-kilowatt photovoltaic system in Virginia feeds clean energy into the utility grid that supplies the Pentagon with electricity. Utility companies can use the resources on this page to find out more about how utilities are using solar photovoltaics (PV) as well as information about designing solar energy programs. Research, Development and Deployment Utility Technical Engagement A central resource for utilities interested in designing solar energy programs and networking with other utilities with existing solar programs from the U.S. Department of Energy (DOE) Solar Program. NREL Photovoltaics Research A central resource for our nation's capabilities in PV, uniting diverse R&D

342

US photovoltaic patents: 1991--1993  

DOE Green Energy (OSTI)

This document contains US patents on terrestrial photovoltaic (PV) power applications, including systems, components, and materials as well as manufacturing and support functions. The patent entries in this document were issued from 1991 to 1993. The entries were located by searching USPA, the database of the US Patent Office. The final search retrieved all patents under the class ``Batteries, Thermoelectric and Photoelectric`` and the subclasses ``Photoelectric,`` ``Testing,`` and ``Applications.`` The search also located patents that contained the words ``photovoltaic(s)`` or ``solar cell(s)`` and their derivatives. After the initial list was compiled, most of the patents on the following subjects were excluded: space photovoltaic technology, use of the photovoltaic effect for detectors, and subjects only peripherally concerned with photovoltaic. Some patents on these three subjects were included when ft appeared that those inventions might be of use in terrestrial PV power technologies.

Pohle, L

1995-03-01T23:59:59.000Z

343

Design of a single-phase grid-connected photovoltaic systems based on Fuzzy-PID controller  

Science Conference Proceedings (OSTI)

The output power of photovoltaic (PV) module varies with module temperature, solar isolation and 1oads changes etc. In order to control the output power of single-phase grid-connected PV system according to the output power PV arrays. In this paper a ... Keywords: DC/AC inverter, fuzzy-PID control, grid-connected, photovoltaic system

Fengwen Cao; Yiwang Wang

2009-09-01T23:59:59.000Z

344

Versatile High-Fidelity Photovoltaic Module Emulation Woojoo Lee, Younghyun Kim, Yanzhi Wang, Naehyuck Chang, Massoud Pedram,  

E-Print Network (OSTI)

}@elpl.snu.ac.kr, shhan@konkuk.ac.kr ABSTRACT Photovoltaic (PV) cells are promising endurable renewable power sourcesVersatile High-Fidelity Photovoltaic Module Emulation System Woojoo Lee, Younghyun Kim, Yanzhi Wang. The proposed PV module emulation system includes a pilot PV cell, temperature sensors, an accelerometer

Pedram, Massoud

345

Capital Cost-Aware Design and Partial Shading-Aware Architecture Optimization of a Reconfigurable Photovoltaic System  

E-Print Network (OSTI)

Photovoltaic System Yanzhi Wang, Xue Lin, and Massoud Pedram University of Southern California Los Angeles, CA Seoul, Korea 151-744 {jmkim, naehyuck}@elpl.snu.ac.kr Abstract-- Photovoltaic (PV) systems are often to the current partial shading pattern. The reconfigurable PV panel architecture integrates every PV cell

Pedram, Massoud

346

Dynamic Model Validation of PV Inverters Under Short-Circuit Conditions: Preprint  

SciTech Connect

Photovoltaic (PV) modules have dramatically decreased in price in the past few years, spurring the expansion of photovoltaic deployment. Residential and commercial rooftop installations are connected to the distribution network; large-scale installation PV power plants (PVPs) have benefited from tax incentives and the low cost of PV modules. As the level penetration of PV generation increases, the impact on power system reliability will also be greater. Utility power system planners must consider the role of PV generation in power systems more realistically by representing PV generation in dynamic stability analyses. Dynamic models of PV inverters have been developed in the positive sequence representation. NREL has developed a PV inverter dynamic model in PSCAD/EMTDC. This paper validates the dynamic model with an actual hardware bench test conducted by Southern California Edison's Distributed Energy Resources laboratory. All the fault combinations -- symmetrical and unsymmetrical -- were performed in the laboratory. We compare the simulation results with the bench test results.

Muljadi, E.; Singh, M.; Bravo, R.; Gevorgian, V.

2013-03-01T23:59:59.000Z

347

Dynamic Model Validation of PV Inverters Under Short-Circuit Conditions: Preprint  

SciTech Connect

Photovoltaic (PV) modules have dramatically decreased in price in the past few years, spurring the expansion of photovoltaic deployment. Residential and commercial rooftop installations are connected to the distribution network; large-scale installation PV power plants (PVPs) have benefited from tax incentives and the low cost of PV modules. As the level penetration of PV generation increases, the impact on power system reliability will also be greater. Utility power system planners must consider the role of PV generation in power systems more realistically by representing PV generation in dynamic stability analyses. Dynamic models of PV inverters have been developed in the positive sequence representation. NREL has developed a PV inverter dynamic model in PSCAD/EMTDC. This paper validates the dynamic model with an actual hardware bench test conducted by Southern California Edison's Distributed Energy Resources laboratory. All the fault combinations -- symmetrical and unsymmetrical -- were performed in the laboratory. We compare the simulation results with the bench test results.

Muljadi, E.; Singh, M.; Bravo, R.; Gevorgian, V.

2013-03-01T23:59:59.000Z

348

Uncertainty Analysis of Certified Photovoltaic Measurements at the National Renewable Energy Laboratory  

DOE Green Energy (OSTI)

Discusses NREL Photovoltaic Cell and Module Performance Characterization Group's procedures to achieve lowest practical uncertainty in measuring PV performance with respect to reference conditions.

Emery, K.

2009-08-01T23:59:59.000Z

349

Letting The Sun Shine On Solar Costs: An Empirical Investigation Of Photovoltaic Cost Trends In California  

E-Print Network (OSTI)

PHOTOVOLTAIC COST TRENDS IN CALIFORNIA Ryan Wiser Lawrencein the United States: California. We find that: (1) solarof PV system costs in California. Through mid-November 2005,

Wiser, Ryan; Bolinger, Mark; Cappers, Peter; Margolis, Robert

2006-01-01T23:59:59.000Z

350

Precise Application of Transparent Conductive Oxide Coatings for Flat Panel Displays and Photovoltaic Cells  

Argonne has developed a new method for applying thin film coatings of transparent conducting oxides (TCOs) to large panel displays and photovoltaic (PV) cells.

351

Polycrystalline Thin Film Photovoltaics: From the Laboratory to Solar Fields; Preprint  

DOE Green Energy (OSTI)

We review the status of commercial polycrystalline thin-film solar cells and photovoltaic (PV) modules, including current and projected commercialization activities.

von Roedern, B.; Ullal, H. S.; Zweibel, K.

2006-05-01T23:59:59.000Z

352

Financial modeling of consumer discount rate in residential solar photovoltaic purchasing decisions.  

E-Print Network (OSTI)

??Diffusion of microgeneration technologies, particularly rooftop photovoltaic (PV), represents a key option in reducing emissions in the residential sector. This thesis uses a uniquely rich (more)

Sigrin, Benjamin O.

2013-01-01T23:59:59.000Z

353

The Social Acceptance of School-based Solar Photovoltaic Projects: An Ontario, Canada Case Study.  

E-Print Network (OSTI)

??The installation of solar photovoltaic (solar PV) technology on elementary and secondary schools has been undertaken around the world in an attempt to tie together (more)

Beckstead, Claire Louise

2008-01-01T23:59:59.000Z

354

China PV Business and Applications Evaluation  

DOE Green Energy (OSTI)

This report provides an overview of photovoltaics (PV) business and applications in China. Although more than 70 million people in China are without access to grid electricity, many of the unelectrified regions benefit from considerable renewable resources, including good solar insolation. Current annual PV sales are still modest, however, and are estimated to be between 2.0 and 2.5 megawatts. This and other significant PV data, including information regarding the current status of key aspects of Chinese businesses, markets, and distribution channels, are included in the report. Detailed company profiles of Chinese business organizations and summaries of visits made to these companies (as well as to more remote sites in Inner Mongolia to examine PV usage by the end-use customer) in September-October 1998 are also presented.

Sherring, Chris (Sherring Energy Associates)

1999-08-30T23:59:59.000Z

355

Long-Term Performance of the SERF PV Systems  

SciTech Connect

This paper provides the changes in performance ratings of two photovoltaic (PV) systems located on the roof of the Solar Energy Research Facility (SERF) building at the National Renewable Energy Laboratory (NREL) in Golden, Colorado. For the period of May 1994 to April 2002, the performance rating of the two PV systems decreased at the rate of 1% per year. Most of the changes in performance rating are attributed to changes in the performance of the PV arrays. But about a fifth of the observed changes were from the inverter not tracking the peak-power as effectively as the PV arrays aged.

Marion, B.; Adelstein, J.

2003-05-01T23:59:59.000Z

356

Nellis AFB 'Sun Park' Photovoltaic Power Project  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Briefing is: Briefing is: UNCLASSIFIED Headquarters Air Combat Command Nellis AFB 'Sun Park' Photovoltaic Power Project *Capt Frank Hollifield *AFLOA/JACLULT Overview *Objective * Provide renewable utility service from a Contractor owned Photovoltaic (Solar Power) Array to Nellis AFB electrical distribution system * Successful offeror owns and operates the PV Array for length of lease *Legal Instruments * Nellis AFB enters into an indefinite term utility service contract with successful offeror * May cancel with one year notification * 20 year land lease * Provides land for PV array via a land lease ( land treated as"Gov't furnished equipment" in utility contract) Why PV - Why Nellis * Support renewable energy goals

357

FEMP Renewable Energy Fact Sheet: Photovoltaics  

DOE Green Energy (OSTI)

Photovoltaic energy systems, which convert sunlight to electricity, can meet many different needs in Federal facilities. This fact sheet describes how photovoltaic (PV) energy systems can be used to provide electricity for lighting, communications, refrigeration, fans, signs, pumps, drilling equipment, emergency power packs, and cathodic (corrosion) protection, among others. Applications for PV power in Federal facilities include staff housing, parking areas, campgrounds, marinas, visitor centers, roadside communications equipment, ranger stations, underground pipelines, irrigation and disinfecting systems, and disaster response units. PV systems are particularly suitable and cost-effective for facilities that now use diesel power or that are in remote areas far from electric power lines.

NONE

1999-10-01T23:59:59.000Z

358

An overview of NREL's PV solar radiation research task activities and results  

SciTech Connect

This paper presents an overview of the recent activities and results of the Photovoltaics (PV) Solar Radiation Research task of NREL's PV Advanced Research and Development (PVAR D) Project. Topics covered include the Atmospheric Optical Calibration System (AOCS) and instrumentation systems for monitoring and characterizing the solar irradiance available to PV systems. Both types of instrumentation systems and activities are required for a thorough understanding of PV device performance and design.

Hulstrom, R.L.; Cannon, T.W.; Stoffel, T.; Riordan, C.J. (National Renewable Energy Laboratory (NREL), 1617 Cole Blvd., Golden, Colorado 80401 (United States))

1992-12-01T23:59:59.000Z

359

Short-Term PV Generation System Direct Power Prediction Model on Wavelet Neural Network and Weather Type Clustering  

Science Conference Proceedings (OSTI)

With the increase of the capacity of PV generated systems, how to eliminate the problem caused by the randomness of power output for photovoltaic system becomes more significant. Most of the existing photovoltaic prediction is Based on the solar radiation. ... Keywords: PV generation system, Wavelet neural network, Weather type clustering, Direct prediction

Ying Yang, Lei Dong

2013-08-01T23:59:59.000Z

360

Photovoltaic energy program overview, fiscal year 1991. Programs in utility technologies  

SciTech Connect

The Photovoltaics Program Plan, FY 1991--FY 1995 builds on the accomplishments of the past 5 years and broadens the scope of program activities for the future. The previous plan emphasized materials and PV cell research. Under the balanced new plan, the PV Program continues its commitment to strategic research and development (R&D) into PV materials and processes, while also beginning work on PV systems and helping the PV industry encourage new markets for photovoltaics. A major challenge for the program is to assist the US PV industry in laying the foundation for at least 1000 MW of installed PV capacity in the United States and 500 MW internationally by 2000. As part of the new plan, the program expanded the scope of its activities in 1991. The PV Program is now addressing many new aspects of developing and commercializing photovoltaics. It is expanding activities with the US PV industry through the PV Manufacturing Technology (PVMaT) project, designed to address US manufacturers` immediate problems; providing technical assistance to potential end users such as electric utilities; and the program is turning its attention to encouraging new markets for PV. In 1991, for example, the PV Program initiated a new project with the PV industry to encourage a domestic market for PV applications in buildings and began cooperative ventures to support other countries such as Mexico to use PV in their rural electrification programs. This report reviews some of the development, fabrication and manufacturing advances in photovoltaics this year.

1992-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Photovoltaic module and module arrays  

DOE Patents (OSTI)

A photovoltaic (PV) module including a PV device and a frame. The PV device has a PV laminate defining a perimeter and a major plane. The frame is assembled to and encases the laminate perimeter, and includes leading, trailing, and side frame members, and an arm that forms a support face opposite the laminate. The support face is adapted for placement against a horizontal installation surface, to support and orient the laminate in a non-parallel or tilted arrangement. Upon final assembly, the laminate and the frame combine to define a unitary structure. The frame can orient the laminate at an angle in the range of 3.degree.-7.degree. from horizontal, and can be entirely formed of a polymeric material. Optionally, the arm incorporates integral feature(s) that facilitate interconnection with corresponding features of a second, identically formed PV module.

Botkin, Jonathan (El Cerrito, CA); Graves, Simon (Berkeley, CA); Lenox, Carl J. S. (Oakland, CA); Culligan, Matthew (Berkeley, CA); Danning, Matt (Oakland, CA)

2012-07-17T23:59:59.000Z

362

Solar Photovoltaics Market Update: Volume 2 - Summer 2012  

Science Conference Proceedings (OSTI)

Volume 2 of the Electric Power Research Institutes (EPRIs) quarterly Solar PV Market Update provides EPRI members with continued insight into some of the front-line trends throughout the photovoltaic (PV) segment. Whereas Volume 1 of the Solar PV Market Update (1025103) focused more intently on the PV market situation in the United States, this edition explores various solar industry economic, policy, and technology issues from an international perspective. It ...

2012-08-24T23:59:59.000Z

363

Photovoltaic module reliability workshop  

DOE Green Energy (OSTI)

The paper and presentations compiled in this volume form the Proceedings of the fourth in a series of Workshops sponsored by Solar Energy Research Institute (SERI/DOE) under the general theme of photovoltaic module reliability during the period 1986--1990. The reliability Photo Voltaic (PV) modules/systems is exceedingly important along with the initial cost and efficiency of modules if the PV technology has to make a major impact in the power generation market, and for it to compete with the conventional electricity producing technologies. The reliability of photovoltaic modules has progressed significantly in the last few years as evidenced by warranties available on commercial modules of as long as 12 years. However, there is still need for substantial research and testing required to improve module field reliability to levels of 30 years or more. Several small groups of researchers are involved in this research, development, and monitoring activity around the world. In the US, PV manufacturers, DOE laboratories, electric utilities and others are engaged in the photovoltaic reliability research and testing. This group of researchers and others interested in this field were brought together under SERI/DOE sponsorship to exchange the technical knowledge and field experience as related to current information in this important field. The papers presented here reflect this effort.

Mrig, L. (ed.)

1990-01-01T23:59:59.000Z

364

Assessing the impacts of feed in tariffs and metering configuration (gross or net), on the payback period for an average solar PV system in metropolitan Melbourne.  

E-Print Network (OSTI)

??With an increasing customer focus on renewable energy and the perceived benefits from widespread solar photovoltaic (PV) generation there has been a rapid increase in (more)

Bailey, Darren

2009-01-01T23:59:59.000Z

365

Lab Breakthrough: Microelectronic Photovoltaics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Microelectronic Photovoltaics Microelectronic Photovoltaics Lab Breakthrough: Microelectronic Photovoltaics June 7, 2012 - 9:31am Addthis Sandia developed tiny glitter-sized photovoltaic (PV) cells that could revolutionize solar energy collection. The crystalline silicon micro-PV cells will be cheaper and have greater efficiencies than current PV collectors. View the entire YouTube Lab Breakthroughs playlist. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What are MEMS? MEMS are microelectromechanical systems. MEMS are made up of components between 1 to 100 micrometers in size. MEMS devices generally range in size from 20 micrometers to a millimeter. Sandia National Lab semiconductor engineer Gregory Nielson and postdoctoral appointee Jose Luis Cruz-Campa recently took some time to discuss their

366

Battery compatibility with photovoltaic charge controllers  

SciTech Connect

Photovoltaic (PV) systems offer a cost-effective solution to provide electrical power for a wide variety of applications, with battery performance playing a major role in their success. This paper presents some of the results of an industry meeting regarding battery specifications and ratings that photovoltaic system designers require, but do not typically have available to them. Communications between the PV industry and the battery industry regarding appropriate specifications have been uncoordinated and poor in the past. This paper also discusses the effort under way involving the PV industry and battery manufacturers, and provides a working draft of specifications to develop and outline the information sorely needed on batteries. The development of this information is referred to as ``Application Notes for Batteries in Photovoltaic Systems.`` The content of these ``notes`` has been compiled from various sources, including the input from the results of a survey on battery use in the photovoltaic industry. Only lead-acid batteries are discussed

Harrington, S.R. [Ktech Corp., Albuquerque, NM (United States); Bower, W.I. [Sandia National Labs., Albuquerque, NM (United States)

1992-12-31T23:59:59.000Z

367

Request for Information (RFI)--Photovoltaic (PV) ...  

Science Conference Proceedings (OSTI)

... Integrating this level of digital modeling and simulation ... What management models are best suited for ... a not-for-profit management model, such as ...

2011-12-07T23:59:59.000Z

368

Novel Controls of Photovoltaic (PV) Solar Farms.  

E-Print Network (OSTI)

??Solar Farms are absolutely idle in the night and even during daytime operate below capacity in early mornings and late afternoons. Thus, the entire expensive (more)

Rahman, Shah Arifur

2012-01-01T23:59:59.000Z

369

Solar Photovoltaics for Sustainable Agriculture and  

E-Print Network (OSTI)

Solar photovoltaic (PV) systems have shown their potential in rural electrification projects around the world, especially concerning Solar Home Systems. With continuing price decreases of PV systems, other applications are becoming economically attractive and growing experience is gained with the use of PV in such areas as social and communal services, agriculture and other productive activities, which can have a significant impact on rural development. There is still a lack of information, however, on the potential and limitations of such PV applications. The main aim of this study is, therefore, to contribute to a better understanding of the potential impact and of the limitations of PV systems on sustainable agriculture and rural development (SARD), especially concerning income-generating activities. It is, in fact, of paramount importance to identify the potential contribution of PV to rural development in order to gain further financial and political commitment for PV projects and programmes and to design appropriate PV projects. One of the main lessons learnt through this study is that success of PV programmes is significantly enhanced when an integrated strategy is followed. Solar photovoltaic systems, through their flexibility in use, offer unique chances for the energy sector to provide packages of energy services to remote rural areas such as for rural health care, education, communication, agriculture, lighting and water supply. It is hoped that this document contributes to the generation of ideas and discussions among the different institutions involved in providing these services to rural areas and thereby to an "informed " decision on the PV technology option.

B. Van Campen; D. Guidi; G. Best

2000-01-01T23:59:59.000Z

370

Large-Scale PV Integration Study  

DOE Green Energy (OSTI)

This research effort evaluates the impact of large-scale photovoltaic (PV) and distributed generation (DG) output on NV Energys electric grid system in southern Nevada. It analyzes the ability of NV Energys generation to accommodate increasing amounts of utility-scale PV and DG, and the resulting cost of integrating variable renewable resources. The study was jointly funded by the United States Department of Energy and NV Energy, and conducted by a project team comprised of industry experts and research scientists from Navigant Consulting Inc., Sandia National Laboratories, Pacific Northwest National Laboratory and NV Energy.

Lu, Shuai; Etingov, Pavel V.; Diao, Ruisheng; Ma, Jian; Samaan, Nader A.; Makarov, Yuri V.; Guo, Xinxin; Hafen, Ryan P.; Jin, Chunlian; Kirkham, Harold; Shlatz, Eugene; Frantzis, Lisa; McClive, Timothy; Karlson, Gregory; Acharya, Dhruv; Ellis, Abraham; Stein, Joshua; Hansen, Clifford; Chadliev, Vladimir; Smart, Michael; Salgo, Richard; Sorensen, Rahn; Allen, Barbara; Idelchik, Boris

2011-07-29T23:59:59.000Z

371

Photovoltaic Subcontract Program, FY 1990  

SciTech Connect

This report summarizes the progress of the subcontracted photovoltaic (PV) research and development (R D) performed under the Photovoltaics Program at the Solar Energy Research Institute (SERI). The SERI subcontracted PV research and development represents most of the subcontracted R D that is funded by the US Department of Energy (DOE) National Photovoltaics Program. This report covers fiscal year (FY) 1990: October 1, 1989 through September 30, 1990. During FY 1990, the SERI PV program started to implement a new DOE subcontract initiative, entitled the Photovoltaic Manufacturing Technology (PVMaT) Project.'' Excluding (PVMaT) because it was in a start-up phase, in FY 1990 there were 54 subcontracts with a total annualized funding of approximately $11.9 million. Approximately two-thirds of those subcontracts were with universities, at a total funding of over $3.3 million. Cost sharing by industry added another $4.3 million to that $11.9 million of SERI PV subcontracted R D. The six technical sections of this report cover the previously ongoing areas of the subcontracted program: the Amorphous Silicon Research Project, Polycrystalline Thin Films, Crystalline Silicon Materials Research, High-Efficiency Concepts, the New Ideas Program, and the University Participation Program. Technical summaries of each of the subcontracted programs discuss approaches, major accomplishments in FY 1990, and future research directions. Another section introduces the PVMaT project and reports the progress since its inception in FY 1990. Highlights of technology transfer activities are also reported.

Summers, K.A. (ed.)

1991-03-01T23:59:59.000Z

372

Photovoltaic Subcontract Program, FY 1990  

DOE Green Energy (OSTI)

This report summarizes the progress of the subcontracted photovoltaic (PV) research and development (R D) performed under the Photovoltaics Program at the Solar Energy Research Institute (SERI). The SERI subcontracted PV research and development represents most of the subcontracted R D that is funded by the US Department of Energy (DOE) National Photovoltaics Program. This report covers fiscal year (FY) 1990: October 1, 1989 through September 30, 1990. During FY 1990, the SERI PV program started to implement a new DOE subcontract initiative, entitled the Photovoltaic Manufacturing Technology (PVMaT) Project.'' Excluding (PVMaT) because it was in a start-up phase, in FY 1990 there were 54 subcontracts with a total annualized funding of approximately $11.9 million. Approximately two-thirds of those subcontracts were with universities, at a total funding of over $3.3 million. Cost sharing by industry added another $4.3 million to that $11.9 million of SERI PV subcontracted R D. The six technical sections of this report cover the previously ongoing areas of the subcontracted program: the Amorphous Silicon Research Project, Polycrystalline Thin Films, Crystalline Silicon Materials Research, High-Efficiency Concepts, the New Ideas Program, and the University Participation Program. Technical summaries of each of the subcontracted programs discuss approaches, major accomplishments in FY 1990, and future research directions. Another section introduces the PVMaT project and reports the progress since its inception in FY 1990. Highlights of technology transfer activities are also reported.

Summers, K.A. (ed.)

1991-03-01T23:59:59.000Z

373

NREL photovoltaic program FY 1997 annual report  

DOE Green Energy (OSTI)

This report summarizes the in-house and subcontracted research and development (R and D) activities under the NREL PV Program from October 1, 1996, through September 30, 1997 (FY 1997). The NREL PV Program is part of the US Department of Energy`s (DOE`s) National Photovoltaics Program, as described in the DOE National Photovoltaics Program Plan for 1996--2000. The FY 1997 budget authority for carrying out the NREL PV Program was $39.3 million in operating funds and $0.4 million in capital equipment funds. Subcontract activities represent a major part of the NREL PV Program, with $21.8 million (55% of PV funds) going to some 84 subcontractors. Cost sharing by industry added almost $8.8 million to the subcontract R and D activities with industry.

McConnell, R.D.; Hansen, A.; Smoller, S.

1998-06-01T23:59:59.000Z

374

Photovoltaic Materials  

Science Conference Proceedings (OSTI)

The goal of the current project was to help make the US solar industry a world leader in the manufacture of thin film photovoltaics. The overall approach was to leverage ORNLs unique characterization and processing technologies to gain a better understanding of the fundamental challenges for solar cell processing and apply that knowledge to targeted projects with industry members. ORNL has the capabilities in place and the expertise required to understand how basic material properties including defects, impurities, and grain boundaries affect the solar cell performance. ORNL also has unique processing capabilities to optimize the manufacturing process for fabrication of high efficiency and low cost solar cells. ORNL recently established the Center for Advanced Thin-film Systems (CATS), which contains a suite of optical and electrical characterization equipment specifically focused on solar cell research. Under this project, ORNL made these facilities available to industrial partners who were interested in pursuing collaborative research toward the improvement of their product or manufacturing process. Four specific projects were pursued with industrial partners: Global Solar Energy is a solar industry leader in full scale production manufacturing highly-efficient Copper Indium Gallium diSelenide (CIGS) thin film solar material, cells and products. ORNL worked with GSE to develop a scalable, non-vacuum, solution technique to deposit amorphous or nanocrystalline conducting barrier layers on untextured stainless steel substrates for fabricating high efficiency flexible CIGS PV. Ferro Corporations Electronic, Color and Glass Materials (ECGM) business unit is currently the worlds largest supplier of metallic contact materials in the crystalline solar cell marketplace. Ferros ECGM business unit has been the world's leading supplier of thick film metal pastes to the crystalline silicon PV industry for more than 30 years, and has had operational cells and modules in the field for 25 years. Under this project, Ferro leveraged world leading analytical capabilities at ORNL to characterize the paste-to-silicon interface microstructure and develop high efficiency next generation contact pastes. Ampulse Corporation is developing a revolutionary crystalline-silicon (c-Si) thin-film solar photovoltaic (PV) technology. Utilizing uniquely-textured substrates and buffer materials from the Oak Ridge National Laboratory (ORNL), and breakthroughs in Hot-Wire Chemical Vapor Deposition (HW-CVD) techniques in epitaxial silicon developed at the National Renewable Energy Laboratory (NREL), Ampulse is creating a solar technology that is tunable in silicon thickness, and hence in efficiency and economics, to meet the specific requirements of multiple solar PV applications. This project focused on the development of a high rate deposition process to deposit Si, Ge, and Si1-xGex films as an alternate to hot-wire CVD. Mossey Creek Solar is a start-up company with great expertise in the solar field. The primary interest is to create and preserve jobs in the solar sector by developing high-yield, low-cost, high-efficiency solar cells using MSC-patented and -proprietary technologies. The specific goal of this project was to produce large grain formation in thin, net-shape-thickness mc-Si wafers processed with high-purity silicon powder and ORNL's plasma arc lamp melting without introducing impurities that compromise absorption coefficient and carrier lifetime. As part of this project, ORNL also added specific pieces of equipment to enhance our ability to provide unique insight for the solar industry. These capabilities include a moisture barrier measurement system, a combined physical vapor deposition and sputtering system dedicated to cadmium-containing deposits, adeep level transient spectroscopy system useful for identifying defects, an integrating sphere photoluminescence system, and a high-speed ink jet printing system. These tools were combined with others to study the effect of defects on the performance of crystalline silicon and

Duty, C.; Angelini, J.; Armstrong, B.; Bennett, C.; Evans, B.; Jellison, G. E.; Joshi, P.; List, F.; Paranthaman, P.; Parish, C.; Wereszczak, A.

2012-10-15T23:59:59.000Z

375

Blanc, I., Beloin-Saint-Pierre, D., Payet, J., Jacquin, P., Adra, N., Mayer, D., Espace-PV: key sensitive parameters for environmental impacts of grid-connected PV systems with LCA , In Proceedings of the 23rd  

E-Print Network (OSTI)

of Philadelphia uses an 85 kW rooftop PV installation. (Mercury Solar Solutions/ PIX 18064) #12;Solar Powering technologies fall into these main categories: photovoltaics (PV), concentrating solar power (CSP), solar water heating (SWH), and solar space heating and cooling.1 PV and CSP technologies produce electricity; SWH

Paris-Sud XI, Université de

376

NREL: Photovoltaics Research - Thin Film Photovoltaic Partnership Project  

NLE Websites -- All DOE Office Websites (Extended Search)

Thin Film Photovoltaic Partnership Project Thin Film Photovoltaic Partnership Project NREL's Thin Film Photovoltaic (PV) Partnership Project led R&D on emerging thin-film solar technologies in the United States from 1994 to 2009. The project made many advances in thin-film PV technologies that allowed the United States to attain world leadership in this area of solar technology. Three national R&D teams focused on thin-film semiconductor materials: amorphous silicon (a-Si), cadmium telluride (CdTe), and copper indium gallium diselenide (CIGS) and its alloys. The Module Reliability Team and Environmental Health and Safety Team were crosscutting. The teams comprised researchers from the solar industry, academia, and NREL who focused their efforts on improving materials, devices, and manufacturing processes-all

377

Impact of High-Penetration PV on Distribution System Performance: Assessment of Regulation Control Options for Voltage Mitigation  

Science Conference Proceedings (OSTI)

Photovoltaics are beginning to challenge distribution system power engineers nationwide. The impact photovoltaics (PV) has on the power system is directly tied to system characteristics which include but are not limited to voltage class, load, regulation, and short circuit capacity. In addition to the system characteristics, the solar characteristics also play a key role. These include details on the PV systems themselves in addition to the solar irradiance data. The correlation of PV output and ...

2012-12-31T23:59:59.000Z

378

Community Renewable Energy Webinar: Developing PV Projects | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Community Renewable Energy Webinar: Developing PV Projects Community Renewable Energy Webinar: Developing PV Projects Community Renewable Energy Webinar: Developing PV Projects January 15, 2013 1:00PM MST Webinar This webinar will take place from 1-2:15 p.m. Mountain Standard Time. It will provide information on how the cities of Tucson, Arizona, and Minneapolis, Minnesota, utilized requests for proposals (RFPs) and power purchase agreements (PPAs) to develop photovoltaic (PV) projects. The webinar will feature two presentations, highlighted below. RFIs, RFPs, and RFQs for PV: Finding the Right Solar Contractors for Your Community Choosing vendors for solar projects requires a careful look since you may well be dealing with them for 20 years ... or more. The City of Tucson will highlight its experiences with city-owned PV projects as well as a PPA

379

Training on PV Systems: Design, Construction, Operation and Maintenance |  

Open Energy Info (EERE)

Training on PV Systems: Design, Construction, Operation and Maintenance Training on PV Systems: Design, Construction, Operation and Maintenance Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Training on PV Systems: Design, Construction, Operation and Maintenance Agency/Company /Organization: Leonardo Energy Sector: Energy Focus Area: Renewable Energy, Solar Website: www.leonardo-energy.org/node/5948 Training on PV Systems: Design, Construction, Operation and Maintenance Screenshot References: PV Training [1] Overview "A free series of six webinars will be delivered to provide the required knowledge to design a high performance photovoltaic (PV) installation, entering into economic evaluation and project cash-flow. Additionally, very practical aspects such as the construction, start-up, quality management and testing will be reviewed. Plant operation is described in detail, with

380

CdTe PV: Real and Perceived EHS Risks  

DOE Green Energy (OSTI)

As CdTe photovoltaics reached commercialization, questions have been raised about potential cadmium emissions from CdTe PV modules. Some have attacked the CdTe PV technology as unavoidably polluting the environment, and made comparisons of hypothetical emissions from PV modules to cadmium emissions from coal fired power plants. This paper gives an overview of the technical issues pertinent to these questions and further explores the potential of EHS risks during production, use and decommissioning of CdTe PV modules. The following issues are discussed: (a) The physical and toxicological properties of CdTe, (b) comparisons of Cd use in CdTe PV with its use in other technologies and products, and the (c) the possibility of CdTe releases from PV modules.

Fthenakis, V.; Zweibel, K.

2003-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Testing to Support Improvements to PV Components and Systems  

DOE Green Energy (OSTI)

The National Photovoltaic (PV) Program is sponsored by the US Department of Energy and includes a PV Manufacturing Research and Development (R and D) project conducted with industry. This project includes advancements in PV components to improve reliability, reduce costs, and develop integrated PV systems. Participants submit prototypes, pre-production hardware products, and examples of the resulting final products for a range of tests conducted at several national laboratories, independent testing laboratories, and recognized listing agencies. The purpose of this testing is to use the results to assist industry in determining a product's performance and reliability, and to identify areas for potential improvement. This paper briefly describes the PV Manufacturing R and D project, participants in the area of PV systems, balance of systems, and components, and several examples of the different types of product and performance testing used to support and confirm product performance.

THOMAS,H.; KROPOSKI,B.; WITT,C.; BOWER,WARD I.; BONN,RUSSELL H.; GINN,JERRY W.; GONZALEZ,SIGIFREDO

2000-07-15T23:59:59.000Z

382

Testing to Support Improvements to PV Components and Systems  

SciTech Connect

The National Photovoltaic (PV) Program is sponsored by the US Department of Energy and includes a PV Manufacturing Research and Development (R and D) project conducted with industry. This project includes advancements in PV components to improve reliability, reduce costs, and develop integrated PV systems. Participants submit prototypes, pre-production hardware products, and examples of the resulting final products for a range of tests conducted at several national laboratories, independent testing laboratories, and recognized listing agencies. The purpose of this testing is to use the results to assist industry in determining a product's performance and reliability, and to identify areas for potential improvement. This paper briefly describes the PV Manufacturing R and D project, participants in the area of PV systems, balance of systems, and components, and several examples of the different types of product and performance testing used to support and confirm product performance.

THOMAS,H.; KROPOSKI,B.; WITT,C.; BOWER,WARD I.; BONN,RUSSELL H.; GINN,JERRY W.; GONZALEZ,SIGIFREDO

2000-07-15T23:59:59.000Z

383

Optimal Design of Integration of Intelligent, Adaptive Solar (PV) Power Generator with Grid for Domestic Energy Management System  

Science Conference Proceedings (OSTI)

This paper introduces a novel system based on integration of solar power generator with grid for optimal utilization of energy by minimizing the power drawn from grid. A prototype grid integrated PV system comprising of PV module (2*75Wp), battery bank ... Keywords: Solar power Generator (SPG), Domestic Energy Management, Bi-directional Inverter, Photovoltaic(PV), Total Harmonic Distortion (THD)

S. N. Singh; Pooja Singh; Swati Kumari; Swati

2010-03-01T23:59:59.000Z

384

Evaluation of the Performance of the PVUSA Rating Methodology Applied to Dual Junction PV Technology: Preprint (Revised)  

DOE Green Energy (OSTI)

The PVUSA (Photovoltaics for Utility Scale Applications) project in the 1990's developed a rating methodology for PV performance evaluation which has become popular, and even incorporated into concentrating PV rating standards This report apply that method to rack-mounted dual-junction PV system, and produces a system rating.

Myers, D. R.

2009-07-01T23:59:59.000Z

385

U.S. Department of Energy PV Roadmaps | Open Energy Information  

Open Energy Info (EERE)

PV Roadmaps PV Roadmaps Jump to: navigation, search Logo: U.S. Department of Energy PV Roadmaps Name U.S. Department of Energy PV Roadmaps Agency/Company /Organization United States Department of Energy Sector Energy Focus Area Solar Resource Type Publications, Guide/manual Website http://www1.eere.energy.gov/so References U.S. Department of Energy PV Roadmaps[1] Abstract Ten photovoltaic (PV) technology roadmaps were developed in 2007 by staff at the National Renewable Energy Laboratory (NREL), Sandia National Laboratories, U.S. Department of Energy (DOE), and experts from universities and private industry. "Ten photovoltaic (PV) technology roadmaps were developed in 2007 by staff at the National Renewable Energy Laboratory (NREL), Sandia National Laboratories, U.S. Department of Energy (DOE), and experts from

386

Development of a dispatchable PV peak shaving system. Final report on PV:BONUS Phase 2 activities  

DOE Green Energy (OSTI)

In July 1993, the Delmarva Power and Light Company (now Conectiv, Inc.) was awarded a contract for the development of a Dispatchable Photovoltaic Peak Shaving System under the US Department of Energy PV:BONUS Program. The rationale for the dispatchable PV peak shaving system is based on the coincidence between the solar resource and the electrical load in question. Where poor coincidence exists, a PV array by itself does little to offset peak demands. However, with the addition of a relatively small amount of energy storage, the energy from the PV array can be managed and the value of the PV system increases substantially. In Phase 2, Delmarva Power continued the refinement of the system deployed in Phase 1. Four additional dispatchable PV peak shaving systems were installed for extended testing and evaluation at sites in Delaware, Maryland, Wisconsin and North Carolina. A second type of system that can be used to provide back-up power as well as peak shaving was also developed in Phase 2. This PV-UPS system used a packaging approach nearly identical to the PV peak shaving system, although there were significant differences in the design of the power electronics and control systems. Conceptually, the PV-UPS system builds upon the idea of adding value to PV systems by increasing functionality. A prototype of the PV-UPS system was installed in Delaware for evaluation near the end of the contract period.

Ferguson, W.D. [Conectiv, Inc., Wilmington, DE (United States); Nigro, R.M. [Applied Energy Group, Inc., Hauppauge, NY (United States)

1999-01-20T23:59:59.000Z

387

Photovoltaic Technology Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Technology Basics Technology Basics Photovoltaic Technology Basics August 16, 2013 - 4:47pm Addthis Text Version Photovoltaic (PV) materials and devices convert sunlight into electrical energy, and PV cells are commonly known as solar cells. Photovoltaics can literally be translated as light-electricity. First used in about 1890, "photovoltaic" has two parts: photo, derived from the Greek word for light, and volt, relating to electricity pioneer Alessandro Volta. And this is what photovoltaic materials and devices do-they convert light energy into electrical energy, as French physicist Edmond Becquerel discovered as early as 1839. Becquerel discovered the process of using sunlight to produce an electric current in a solid material. But it took more than another century to truly

388

NREL: Photovoltaics Research - Accomplishments in Photovoltaic  

NLE Websites -- All DOE Office Websites (Extended Search)

Accomplishments in Photovoltaic Manufacturing R&D Accomplishments in Photovoltaic Manufacturing R&D Successful efforts within the PV Manufacturing R&D Project were recognized by the solar industry. Key highlights from the project are summarized below. Overall, the project resulted in a more than 50% reduction in manufacturing costs and a substantial return on investment for both the U.S. government and the industries involved. A number of companies participating in the project were able to make technological advances that helped them attract millions of dollars in private investment capital. The project focused on four primary areas of solar manufacturing: Solar cells and modules Manufacturing processes Systems integration System components. Solar Cells and Modules Advances in solar cells and modules were made that significantly reduced

389

NREL: Photovoltaics Research - Performance and Reliability R&D  

NLE Websites -- All DOE Office Websites (Extended Search)

Research Research Search More Search Options Site Map Photo of Photovoltaic Solar Panels. The focus of Photovoltaic (PV) Reliability Research and Development (R&D) at NREL is to improve PV technologies. Modules and systems are tested for long-term performance and stressed in the field and with accelerated testing equipment, all to find R&D solutions to improve PV reliability. Learn about working with us. Help us improve PV systems by providing data in our PV Module Field Failure Database. PV Reliability R&D focuses on three primary areas: Real-time reliability R&D Long-term performance, reliability, and failures of PV components and systems are studied at NREL and through collaborations elsewhere. Analysis is performed to quantify long-term degradation, and

390

Riverside Public Utilities - Residential PV Incentive Program | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PV Incentive Program PV Incentive Program Riverside Public Utilities - Residential PV Incentive Program < Back Eligibility Residential Savings Category Solar Buying & Making Electricity Maximum Rebate 13,000 or 50% of project cost, whichever is less Program Info State California Program Type Utility Rebate Program Rebate Amount Program is on hold Provider Riverside Public Utilities '''''Note: Funding for this program has been exhausted for the remainder of the fiscal year. The program is scheduled to reopen on July 1, 2014. ''''' The Residential Photovoltaic (PV) System rebate program provides incentives to Riverside Public Utilities customers who purchase and install qualifying photovoltaic systems on their homes. For Fiscal Year 2013, the rebate amount was $2.00 per watt AC and cannot exceed 50% of the total system cost

391

Microsoft Word - PV Report v20.doc  

Gasoline and Diesel Fuel Update (EIA)

A A EIA Task Order No. DE-DT0000804, Subtask 3 Photovoltaic (PV) Cost and Performance Characteristics for Residential and Commercial Applications Final Report August 2010 Prepared for: Office of Integrated Analysis and Forecasting U.S. Energy Information Administration Prepared by: ICF International Contact: Robert Kwartin T: (703) 934-3586 E: rkwartin@icfi.com ii Table of Contents Executive Summary ...................................................................................................................... v 1. Introduction ...........................................................................................................................1 1.1 Objective ....................................................................................................................1

392

Updating Technical Screens for PV Interconnection: Preprint  

DOE Green Energy (OSTI)

Solar photovoltaics (PV) is the dominant type of distributed generation (DG) technology interconnected to electric distribution systems in the United States, and deployment of PV systems continues to increase rapidly. Considering the rapid growth and widespread deployment of PV systems in United States electric distribution grids, it is important that interconnection procedures be as streamlined as possible to avoid unnecessary interconnection studies, costs, and delays. Because many PV interconnection applications involve high penetration scenarios, the process needs to allow for a sufficiently rigorous technical evaluation to identify and address possible system impacts. Existing interconnection procedures are designed to balance the need for efficiency and technical rigor for all DG. However, there is an implicit expectation that those procedures will be updated over time in order to remain relevant with respect to evolving standards, technology, and practical experience. Modifications to interconnection screens and procedures must focus on maintaining or improving safety and reliability, as well as accurately allocating costs and improving expediency of the interconnection process. This paper evaluates the origins and usefulness of the capacity penetration screen, offers potential short-term solutions which could effectively allow fast-track interconnection to many PV system applications, and considers longer-term solutions for increasing PV deployment levels in a safe and reliable manner while reducing or eliminating the emphasis on the penetration screen.

Coddington, M.; Ellis, A.; Lynn, K.; Razon, A.; Key, T.; Kroposki, B.; Mather, B.; Hill, R.; Nicole, K.; Smith, J.

2012-08-01T23:59:59.000Z

393

Progress in photovoltaic system and component improvements  

DOE Green Energy (OSTI)

The Photovoltaic Manufacturing Technology (PVMaT) project is a partnership between the US government (through the US Department of Energy [DOE]) and the PV industry. Part of its purpose is to conduct manufacturing technology research and development to address the issues and opportunities identified by industry to advance photovoltaic (PV) systems and components. The project was initiated in 1990 and has been conducted in several phases to support the evolution of PV industrial manufacturing technology. Early phases of the project stressed PV module manufacturing. Starting with Phase 4A and continuing in Phase 5A, the goals were broadened to include improvement of component efficiency, energy storage and manufacturing and system or component integration to bring together all elements for a PV product. This paper summarizes PV manufacturers` accomplishments in components, system integration, and alternative manufacturing methods. Their approaches have resulted in improved hardware and PV system performance, better system compatibility, and new system capabilities. Results include new products such as Underwriters Laboratories (UL)-listed AC PV modules, modular inverters, and advanced inverter designs that use readily available and standard components. Work planned in Phase 5A1 includes integrated residential and commercial roof-top systems, PV systems with energy storage, and 300-Wac to 4-kWac inverters.

Thomas, H.P.; Kroposki, B.; McNutt, P.; Witt, C.E. [National Renewable Energy Lab., Golden, CO (United States); Bower, W.; Bonn, R.; Hund, T.D. [Sandia National Labs., Albuquerque, NM (United States)

1998-07-01T23:59:59.000Z

394

Photovoltaics: From the laboratory to the marketplace  

DOE Green Energy (OSTI)

Photovoltaics (PV), the direct conversion of sunlight to electricity, is experiencing significant improvements in technology performance and lowered costs. Fostering these improvements, the SERI Photovoltaic Advanced Research and Development (PV AR D) Project supports research and provides services to the US PV industry. This paper presents the recent advances and future direction of the PV project. Research areas are Fundamental and Supporting Research, Advanced Thin-Film Materials, High-Efficiency Materials, Module Development, and Systems Development. Materials of interest include amorphous silicon, copper indium diselenide, cadmium telluride, crystalline silicon, gallium arsenide and related alloys, transparent conductors, antireflection coatings, substrates, and encapsulants. The PV project inherently provides technology transfer that helps industry shorten the time to bring R D advances to the marketplace. SERI annually performs over 10,000 measurements for the entire PV community, participates in collaborative research, and welcomes visiting scientists. Two specific areas of recently increased national focus are: (1) manufacturing processes for cost-effective PV modules, and (2) systems development for high-value utility applications. The SERI research approach is based on facilitating direct contact between industry, electric utilities, and others interested in PV technology. This approach heavily relies on SERI/industry partnerships. The arrangements vary to address generic and company-specific problems to improve the US industry's competitive position and accelerate greater electric utility deployment of PV systems. 5 refs., 5 figs., 6 tabs.

Basso, T.S.; Surek, T.; Thornton, J.

1991-03-01T23:59:59.000Z

395

Progress in photovoltaic system and component improvements  

SciTech Connect

The Photovoltaic Manufacturing Technology (PVMaT) project is a partnership between the US government (through the US Department of Energy [DOE]) and the PV industry. Part of its purpose is to conduct manufacturing technology research and development to address the issues and opportunities identified by industry to advance photovoltaic (PV) systems and components. The project was initiated in 1990 and has been conducted in several phases to support the evolution of PV industrial manufacturing technology. Early phases of the project stressed PV module manufacturing. Starting with Phase 4A and continuing in Phase 5A, the goals were broadened to include improvement of component efficiency, energy storage and manufacturing and system or component integration to bring together all elements for a PV product. This paper summarizes PV manufacturers` accomplishments in components, system integration, and alternative manufacturing methods. Their approaches have resulted in improved hardware and PV system performance, better system compatibility, and new system capabilities. Results include new products such as Underwriters Laboratories (UL)-listed AC PV modules, modular inverters, and advanced inverter designs that use readily available and standard components. Work planned in Phase 5A1 includes integrated residential and commercial roof-top systems, PV systems with energy storage, and 300-Wac to 4-kWac inverters.

Thomas, H.P.; Kroposki, B.; McNutt, P.; Witt, C.E. [National Renewable Energy Lab., Golden, CO (United States); Bower, W.; Bonn, R.; Hund, T.D. [Sandia National Labs., Albuquerque, NM (United States)

1998-08-01T23:59:59.000Z

396

Solar PV Market Update, Volume 4: Q4 2012  

Science Conference Proceedings (OSTI)

Volume 4 of EPRIs quarterly Solar PV Market Update provides continued insight into some of the front line trends that are afoot throughout the photovoltaic segment. Like previous Updates, it synthesizes primary as well as secondary data from multiple sources in an effort to highlight both macro and micro industry developments that are likely to impact utility solar PV investment and planning efforts. Specifically, this report discusses the increasing impact of balance-of-system (BOS) ...

2012-12-31T23:59:59.000Z

397

Advanced Metering Infrastructure (AMI) for Distributed Solar (PV) Integration  

Science Conference Proceedings (OSTI)

This report summarizes the findings from a survey on two-way communication with distributed photovoltaic (PV) generation. The survey focused specifically on exploring how advanced metering infrastructure might be used as the communication means for the integration of residential PV systems. This investigation is one of several data-gathering projects in the Electric Power Research Institutes (EPRIs) Renewables Integration program (P174). Together, these projects and the data they provide will lay the ...

2009-09-09T23:59:59.000Z

398

Development of an FPGA-based system for real-time simulation of photovoltaic modules  

Science Conference Proceedings (OSTI)

Photovoltaic (PV) simulators are indispensable for the operational evaluation of PV energy production system components (e.g. battery chargers, DC/AC inverters, etc.), in order to avoid the time-consuming and expensive field-testing process. In this ... Keywords: DC/DC converter, Field programmable gate array, Photovoltaic system, Rapid system prototyping, Simulator

Eftichios Koutroulis; Kostas Kalaitzakis; Vasileios Tzitzilonis

2009-07-01T23:59:59.000Z

399

Dynamic Reconfiguration of Photovoltaic Energy Harvesting System in Hybrid Electric Vehicles  

E-Print Network (OSTI)

Dynamic Reconfiguration of Photovoltaic Energy Harvesting System in Hybrid Electric Vehicles Yanzhi, xuelin, pedram}@usc.edu, 2 {naehyuck}@elpl.snu.ac.kr ABSTRACT Photovoltaic (PV) energy harvesting system is a promising energy source for battery replenishment in hybrid electric vehicles (HEVs.) The PV cell array

Pedram, Massoud

400

Maximum power point tracking and optimal Li-ion battery charging control for photovoltaic charging system  

Science Conference Proceedings (OSTI)

Due to the severity of the global energy crisis and environmental pollution, the photovoltaic (PV) system has become one kind of important renewable energy source. Solar energy has the advantages of maximum reserve, inexhaustibleness, and is free from ... Keywords: Genetic algorithms (GA), Photovoltaic (PV), Variable Step Size Incremental Conductance method

Her-Terng Yau; Qin-Cheng Liang; Chin-Tsung Hsieh

2012-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

NREL Photovoltaic Program FY 1996 Annual Report  

DOE Green Energy (OSTI)

This report summarizes the in-house and subcontract research and development (R&D) activities under the National Renewable Energy Laboratory (NREL) Photovoltaics (PV) Program from October 1, 1995 through September 30, 1996 (fiscal year [FY] 1996). The NREL PV Program is part of the U.S. Department of Energy's (DOE) National Photovoltaics Program, as described in the DOE Photovoltaics Program Plan, FY 1991 - FY 1995. The mission of the DOE National Photovoltaics Program is to: "Work in partnership with U.S. industry to develop and deploy photovoltaic technology for generating economically competitive electric power, making photovoltaics an important contributor to the nation's and the world's energy use and environmental improvement. The two primary goals of the national program are to (1) maintain the U.S. PV industry's world leadership in research and technology development and (2) help the U.S. industry remain a major, profitable force in the world market. The NREL PV Program provides leadership and support to the national program toward achieving its mission and goals.

Not Available

1997-08-01T23:59:59.000Z

402

NREL Photovoltaic Program FY 1996 Annual Report  

SciTech Connect

This report summarizes the in-house and subcontract research and development (R&D) activities under the National Renewable Energy Laboratory (NREL) Photovoltaics (PV) Program from October 1, 1995 through September 30, 1996 (fiscal year [FY] 1996). The NREL PV Program is part of the U.S. Department of Energy's (DOE) National Photovoltaics Program, as described in the DOE Photovoltaics Program Plan, FY 1991 - FY 1995. The mission of the DOE National Photovoltaics Program is to: "Work in partnership with U.S. industry to develop and deploy photovoltaic technology for generating economically competitive electric power, making photovoltaics an important contributor to the nation's and the world's energy use and environmental improvement. The two primary goals of the national program are to (1) maintain the U.S. PV industry's world leadership in research and technology development and (2) help the U.S. industry remain a major, profitable force in the world market. The NREL PV Program provides leadership and support to the national program toward achieving its mission and goals.

1997-08-01T23:59:59.000Z

403

Improving grid reliability through integration of distributed PV and energy storage  

Science Conference Proceedings (OSTI)

Several emerging technologies, namely, high penetration grid-connected distributed photovoltaics (PV), energy storage, and smart grid have seen tremendous growth in recent years. Because of their interconnected nature, the deployed systems are fairly ...

Guohui Yuan

2012-01-01T23:59:59.000Z

404

Low Cost High Concentration PV Systems for Utility Power Generation Amonix,  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Amonix, Inc. Amonix, Inc. Low Cost High Concentration PV Systems for Utility Power Generation Amonix, Inc. A series of brief fact sheet on various topics including:Low Cost High Concentration PV Systems for Utility Power Generation,High Efficiency Concentrating Photovoltaic Power System,Reaching Grid Parity Using BP Solar Crystalline Silicon Technology, Fully Integrated Building Science Solutions for Residential and Commercial Photovoltaic Energy Generation,A Value Chain Partnership to Accelerate U.S. Photovoltaic Industry Growth,AC Module PV System,Flexible Organic Polymer-Based PV For Building Integrated Commercial Applications,Flexable Integrated PV System,Delivering Grid-Parity Solar Electricity On Flat Commercial Rooftops,Fully Automated Systems Technology, Concentrating Solar Panels: Bringing the Highest Power and Lowest Cost to

405

Tracking the Sun III The Installed Cost of Photovoltaics  

E-Print Network (OSTI)

Contents The Installed Cost of Photovoltaics in the U.S. from 1998-2009 Environmental Energy Technologies .................................................................... 10 4. PV Incentive and Net Installed Cost Trends ....................................... 27 5 Appendix A: Data Cleaning, Coding, and Standardization ....................... 36 Appendix B: Detailed

406

Energy Basics: Types of Silicon Used in Photovoltaics  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

make some the earliest photovoltaic (PV) devices-is still the most popular material for solar cells. Silicon is also the second-most abundant element in the Earth's crust (after...

407

Real Power and Reactive Power Control of a Three-Phase Single-Stage-PV System and PV voltage Stability  

Science Conference Proceedings (OSTI)

Grid-connected photovoltaic (PV) systems with power electronic interfaces can provide both real and reactive power to meet power system needs with appropriate control algorithms. This paper presents the control algorithm design for a three-phase single-stage grid-connected PV inverter to achieve either maximum power point tracking (MPPT) or a certain amount of real power injection, as well as the voltage/var control. The switching between MPPT control mode and a certain amount of real power control mode is automatic and seamless. Without the DC-to-DC booster stage, PV DC voltage stability is an important issue in the control design especially when the PV inverter is operating at maximum power point (MPP) with voltage/var control. The PV DC voltage collapse phenomenon and its reason are discussed. The method based on dynamic correction of the PV inverter output is proposed to ensure PV DC voltage stability. Simulation results of the single-stage PV system during system disturbances and fast solar irradiation changes confirm that the proposed control algorithm for single-stage PV inverters can provide appropriate real and reactive power services and ensure PV DC voltage stability during dynamic system operation and atmospheric conditions.

Li, Huijuan [ORNL; Xu, Yan [ORNL; Adhikari, Sarina [ORNL; Rizy, D Tom [ORNL; Li, Fangxing [ORNL; Irminger, Philip [ORNL

2012-01-01T23:59:59.000Z

408

PV Working with Industry Newsletter: 2000 and beyond. Our time to shine  

DOE Green Energy (OSTI)

NREL PV Working With Industry is a quarterly newsletter devoted to the research, development, and deployment performed by NREL staff in concert with their industry and university partners. The Third Quarter, 1999 issue focuses on planning activities of the National Center for Photovoltaics (NCPV), including the PV Industry 20-Year Roadmap and the National Photovoltaics Program Plan. The editorialist is Allen Barnett, president of AstroPower, Inc., and a member of the NCPV Advisory Board.

Moon, S.; Cook, G.; Poole, L.

1999-11-30T23:59:59.000Z

409

PV array simulator development and validation.  

Science Conference Proceedings (OSTI)

The ability to harvest all available energy from a photovoltaic (PV) array is essential if new system developments are to meet levelized cost of energy targets and achieve grid parity with conventional centralized utility power. Therefore, exercising maximum power point tracking (MPPT) algorithms, dynamic irradiance condition operation and startup and shutdown routines and evaluating inverter performance with various PV module fill-factor characteristics must be performed with a repeatable, reliable PV source. Sandia National Laboratories is collaborating with Ametek Programmable Power to develop and demonstrate a multi-port TerraSAS PV array simulator. The simulator will replicate challenging PV module profiles, enabling the evaluation of inverter performance through analyses of the parameters listed above. Energy harvest algorithms have traditionally implemented methods that successfully utilize available energy. However, the quantification of energy capture has always been difficult to conduct, specifically when characterizing the inverter performance under non-reproducible dynamic irradiance conditions. Theoretical models of the MPPT algorithms can simulate capture effectiveness, but full validation requires a DC source with representative field effects. The DC source being developed by Ametek and validated by Sandia is a fully integrated system that can simulate an IV curve from the Solar Advisor Model (SAM) module data base. The PV simulator allows the user to change the fill factor by programming the maximum power point voltage and current parameters and the open circuit voltage and short circuit current. The integrated PV simulator can incorporate captured irradiance and module temperature data files for playback, and scripted profiles can be generated to validate new emerging hardware embedded with existing and evolving MPPT algorithms. Since the simulator has multiple independent outputs, it also has the flexibility to evaluate an inverter with multiple MPPT DC inputs. The flexibility of the PV simulator enables the validation of the inverter's capability to handle vastly different array configurations.

Kuszmaul, Scott S.; Gonzalez, Sigifredo; Lucca, Roberto (Ametek Programmable Power, San Diego, CA); Deuel, Don (Ametek Programmable Power, San Diego, CA)

2010-06-01T23:59:59.000Z

410

Photovoltaic module with removable wind deflector  

DOE Patents (OSTI)

A photovoltaic (PV) module assembly including a PV module, a deflector, and a clip. The PV module includes a PV device and a frame. A PV laminate is assembled to the frame, and the frame includes a support arm forming a seat. The deflector defines a front face and a rear face, with the clip extending from either the trailing frame member or the rear face of the deflector. In a mounted state, the deflector is nested within the seat and is releasably mounted to the trailing frame member via the clip. In some embodiments, the support arm forms a second seat, with the PV module assembly providing a second mounted state in which the deflector is in a differing orientation/slope, nested within the second seat and releasably mounted to the trailing frame member via the clip.

Botkin, Jonathan (El Cerrito, CA); Graves, Simon (Berkeley, CA); Danning, Matt (Oakland, CA); Culligan, Matthew (Berkeley, CA)

2012-08-07T23:59:59.000Z

411

Photovoltaic module with removable wind deflector  

DOE Patents (OSTI)

A photovoltaic (PV) module assembly including a PV module, a deflector, and a clip. The PV module includes a PV device and a frame. A PV laminate is assembled to the frame, and the frame includes a support arm forming a seat. The deflector defines a front face and a rear face, with the clip extending from either the trailing frame member or the rear face of the deflector. In a mounted state, the deflector is nested within the seat and is releasably mounted to the trailing frame member via the clip. In some embodiments, the support arm forms a second seat, with the PV module assembly providing a second mounted state in which the deflector is in a differing orientation/slope, nested within the second seat and releasably mounted to the trailing frame member via the clip.

Botkin, Jonathan; Graves, Simon; Danning, Matt; Culligan, Matthew

2013-05-28T23:59:59.000Z

412

Photovoltaic self-assembly.  

DOE Green Energy (OSTI)

This late-start LDRD was focused on the application of chemical principles of self-assembly on the ordering and placement of photovoltaic cells in a module. The drive for this chemical-based self-assembly stems from the escalating prices in the 'pick-and-place' technology currently used in the MEMS industries as the size of chips decreases. The chemical self-assembly principles are well-known on a molecular scale in other material science systems but to date had not been applied to the assembly of cells in a photovoltaic array or module. We explored several types of chemical-based self-assembly techniques, including gold-thiol interactions, liquid polymer binding, and hydrophobic-hydrophilic interactions designed to array both Si and GaAs PV chips onto a substrate. Additional research was focused on the modification of PV cells in an effort to gain control over the facial directionality of the cells in a solvent-based environment. Despite being a small footprint research project worked on for only a short time, the technical results and scientific accomplishments were significant and could prove to be enabling technology in the disruptive advancement of the microelectronic photovoltaics industry.

Lavin, Judith; Kemp, Richard Alan; Stewart, Constantine A.

2010-10-01T23:59:59.000Z

413

Potential of Photovoltaics: Preprint  

DOE Green Energy (OSTI)

This paper discusses PV in the world energy portfolio, PV basics, PV technologies, and vacuum web-coating applications in PV.

Nelson, B. P.

2008-10-01T23:59:59.000Z

414

AEP SWEPCO - SMART Source Solar PV Program | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

AEP SWEPCO - SMART Source Solar PV Program AEP SWEPCO - SMART Source Solar PV Program AEP SWEPCO - SMART Source Solar PV Program < Back Eligibility Residential Savings Category Solar Buying & Making Electricity Maximum Rebate Residential: $15,000 Non-residential: $30,000 Program Info Start Date 08/01/2009 State Texas Program Type Utility Rebate Program Rebate Amount Residential: $1.50/watt DC Non-residential: $1.20/watt DC Provider Smart Source PV Program Southwestern Electric Power Company (SWEPCO) offers rebates to customers that install photovoltaic (PV) systems on homes. Rebates may be assigned to the customer, a service provider, or a third party. Rebates are offered at a rate of $1.50 per watt (DC) for residential installations and $1.20 per watt (DC) for non-residential installations. The maximum per project and per customer rebate for residential systems is

415

AEP Texas Central Company - SMART Source Solar PV Rebate Program |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Central Company - SMART Source Solar PV Rebate Program Central Company - SMART Source Solar PV Rebate Program AEP Texas Central Company - SMART Source Solar PV Rebate Program < Back Eligibility Agricultural Commercial Fed. Government Industrial Institutional Local Government Multi-Family Residential Nonprofit Residential Schools State Government Tribal Government Savings Category Solar Buying & Making Electricity Maximum Rebate Residential: $15,000 Non-residential: $31,2500 Program Info Start Date 08/01/2009 State Texas Program Type Utility Rebate Program Rebate Amount Residential: $1.50/W DC Non-residential: $1.25/W DC Provider Smart Source PV Program American Electric Power Texas Central Company (AEP-TCC) offers rebates to customers that install photovoltaic (PV) systems on homes or other buildings. Customers of all rate classes are eligible to participate in the

416

Gainesville Regional Utilities - Solar-Electric (PV) System Rebate Program  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Gainesville Regional Utilities - Solar-Electric (PV) System Rebate Gainesville Regional Utilities - Solar-Electric (PV) System Rebate Program Gainesville Regional Utilities - Solar-Electric (PV) System Rebate Program < Back Eligibility Residential Savings Category Solar Buying & Making Electricity Maximum Rebate $5,000 Program Info Start Date 10/1/2010 State Florida Program Type Utility Rebate Program Rebate Amount Solar window of 80% or more: $1.00/watt Provider Gainesville Regional Utilities '''''NOTE: Application targets for fiscal year 2013 have been met for the GRU Solar PV Rebate Program. The next round of applications are scheduled to open on October 1, 2013 pending approval of the GRU budget by the Gainesville City Commission.''''' Gainesville Regional Utilities (GRU) offers its customers a rebate to install photovoltaic (PV) systems. Systems with solar windows of 80% or

417

Battery Sizing for Grid Connected PV Systems with Fixed Minimum Charging/Discharging Time  

E-Print Network (OSTI)

Battery Sizing for Grid Connected PV Systems with Fixed Minimum Charging/Discharging Time Yu Ru, Jan Kleissl, and Sonia Martinez Abstract-- In this paper, we study a battery sizing problem for grid-connected photovoltaic (PV) systems assuming that the battery charging/discharging limit scales linearly with its

Martínez, Sonia

418

Robust control strategy for PV system integration in distribution systems M.J. Hossain a,  

E-Print Network (OSTI)

(PV) near Baker Application complete POD received. EIS required 5101 pending CACA 48742 9,600 MUC: Moderate 1,000 Mw Photovoltaic (PV) Silurian Valley Application complete POD received. EIS required 5101 POD received. EIS required 5101 pending Pending Solar Investments LLC (G-S) 01/18/2007 8,000 MUC

Pota, Himanshu Roy

419

NREL PV Module Reliability and Performance R&D Status and Accomplishments  

DOE Green Energy (OSTI)

This paper presents a brief overview of the status and accomplishments during Fiscal Year (FY)2004 of the Photovoltaic (PV) Module Reliability and Performance R&D Subtask, which is part of the PV Module Reliability R&D Project (a joint NREL-Sandia project).

Osterwald, C. R.

2005-01-01T23:59:59.000Z

420

Editorial: Photovoltaic Materials and Devices  

Science Conference Proceedings (OSTI)

As the global energy needs grow, there is increasing interest in the generation of electricity by photovoltaics (PVs) devices or solar cells - devices that convert sunlight to electricity. Solar industry has seen an enormous growth during the last decade. The sale of PV modules has exceeded 27 GW in 2011, with significant contributions to the market share from all technologies. While the silicon technology continues to have the dominant share, the other thin film technologies (CdTe, CIGS, a-Si, and organic PV) are experiencing fast growth. Increased production of silicon modules has led to a very rapid reduction in their price and remains as benchmark for other technologies. The PV industry is in full gear to commercialize new automated equipment for solar cell and module production, instrumentation for process monitoring technologies, and for implementation of other cost-reduction approaches, and extensive research continues to be carried out in many laboratories to improve the efficiency of solar cells and modules without increasing the production costs. A large variety of solar cells, which differ in the material systems used, design, PV structure, and even the principle of PV conversion, are designed to date. This special issue contains peer-reviewed papers in the recent developments in research related to broad spectrum of photovoltaic materials and devices. It contains papers on many aspects of solar cells-the growth and deposition, characterization, and new material development.

Sopori, B.; Tan, T.; Rupnowski, P.

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Economic impact of integrating photovoltaics with conventional electric utility operation  

SciTech Connect

The purpose of this study was to determine the parameters which impact the value of photovoltaics (PV) to the electric utility. We have, therefore, chosen the high, medium and low load days in winter (January) and summer (July). The daily peak load has varied from 5838 MW to 9712 MW. These six days are studied for reference (no PV), high, medium, low and intermittent PV output cases. Results from these 30 case studies are summarized in this paper. In order to study the impact of operating photovoltaic (PV) systems on the electric utility production cost (fuel and variable O and M) we have chosen the load profile of a southeastern utility and the PV output data from solar test facilities in Virginia and North Carolina. In order to incorporate the short-term variations we have used 10-minute resolution data for both load and PV output.

Rahman, S. (Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (USA). Dept. of Electrical Engineering)

1990-09-01T23:59:59.000Z

422

Assessment of Rooftop and Building-Integrated PV Systems for Distributed Generation  

Science Conference Proceedings (OSTI)

Photovoltaics (PV) is the technology of solar cells -- solid-state devices that directly, silently, and cleanly convert solar energy into electricity. Although commercially available for many years, PV technology has only recently become sufficiently affordable and efficient to be a practical alternative or supplement to conventional grid power. PV devices are commonly mounted on a structure's rooftop, but are increasingly integrated into building components such as siding, glass, or roof tiles. This rep...

2003-03-04T23:59:59.000Z

423

PV Reliability Operations and Maintenance (PVROM) Database Initiative: 2013 Project Report  

Science Conference Proceedings (OSTI)

To fill a major knowledge gap, EPRI and Sandia National Laboratories are jointly engaged in a multi-year research effort to examine photovoltaic (PV) plant reliability performance obtained through documented field data. Findings and analyses, derived from the PV Reliability Operations Maintenance (PVROM) database, are intended to inform industry best practices around the optimal operations and maintenance (O&M) of solar assets.Currently being populated with initial PV plant ...

2013-12-23T23:59:59.000Z

424

Photovoltaics Value Analysis | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Photovoltaics Value Analysis Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Photovoltaics Value Analysis Focus Area: Renewable Energy Topics: Environmental Website: www.nrel.gov/analysis/pdfs/42303.pdf Equivalent URI: cleanenergysolutions.org/content/photovoltaics-value-analysis Policies: Financial Incentives This study addresses photovoltaics (PV) distributed systems technology development; advanced distribution systems integration; system-level tests and demonstrations; technical and market analysis; resource assessment; and codes, standards, and regulatory implementation. The study defines a set of PV benefits and costs, such as greenhouse gas abatement or reliability, and then examines a series of case studies to ascertain whether the benefits of

425

Flat-Plate Photovoltaic Systems  

Energy.gov (U.S. Department of Energy (DOE))

The most common photovoltaic (PV) array design uses flat-plate PV modules or panels. These panels can be fixed in place or allowed to track the movement of the sun. They respond to sunlight that is direct or diffuse. Even in clear skies, the diffuse component of sunlight accounts for between 10% and 20% of the total solar radiation on a horizontal surface. On partly sunny days, up to 50% of that radiation is diffuse, and on cloudy days, 100% of the radiation is diffuse.

426

Thin-Film Photovoltaic Industry  

Science Conference Proceedings (OSTI)

This report presents an overview of the thin-film (TF) photovoltaic (PV) industry as of the third quarter of 2012, a time in the midst of very rapid changes. The TFPV industry has seen significantly greater investment in the past 5 to 10 years than in any previous time and up until recently it seemed that this investment was on track to make TFPV a much larger player in the overall PV market. However, market dynamics have conspired to dim TFPVs near-term prospects and ...

2012-11-30T23:59:59.000Z

427

Photovoltaics Overview: Fiscal Year 2001  

DOE Green Energy (OSTI)

In Fiscal Year 2001, for the third year in a row, the solar electric market grew at more than 30%. Fueling this growth is the U.S. photovoltaic industry - the companies that design, manufacture, install, operate, and maintain all components of solar generating systems. The messages of the U.S. PV industry roadmap are taken very seriously by the U.S. Department of Energy's Office of Solar Energy Technologies. Achieving industry's goals will demand aggressive work in fundamental and exploratory research, manufacturing, and system applications to reduce the cost of solar electric systems. This is an annual report of the DOE PV Program, FY2001.

Not Available

2002-02-01T23:59:59.000Z

428

PV performance modeling workshop summary report.  

DOE Green Energy (OSTI)

During the development of a solar photovoltaic (PV) energy project, predicting expected energy production from a system is a key part of understanding system value. System energy production is a function of the system design and location, the mounting configuration, the power conversion system, and the module technology, as well as the solar resource. Even if all other variables are held constant, annual energy yield (kWh/kWp) will vary among module technologies because of differences in response to low-light levels and temperature. A number of PV system performance models have been developed and are in use, but little has been published on validation of these models or the accuracy and uncertainty of their output. With support from the U.S. Department of Energy's Solar Energy Technologies Program, Sandia National Laboratories organized a PV Performance Modeling Workshop in Albuquerque, New Mexico, September 22-23, 2010. The workshop was intended to address the current state of PV system models, develop a path forward for establishing best practices on PV system performance modeling, and set the stage for standardization of testing and validation procedures for models and input parameters. This report summarizes discussions and presentations from the workshop, as well as examines opportunities for collaborative efforts to develop objective comparisons between models and across sites and applications.

Stein, Joshua S.; Tasca, Coryne Adelle (SRA International, Inc., Fairfax, VA); Cameron, Christopher P.

2011-05-01T23:59:59.000Z

429

Development and Demonstration of DC Photovoltaic Applications  

Science Conference Proceedings (OSTI)

This report documents a field demonstration performed at Bowling Green State University (BGSU) as part of an Electric Power Research Institute (EPRI) research project on improving the economics of photovoltaic (PV) power generation with innovative direct current (dc) applications. Unlike conventional dc uses for PV energy, this project aimed to demonstrate the powering of specific loads in grid-connected buildings without interference to the ac distribution system or other building loads.

2009-10-28T23:59:59.000Z

430

Production Cost Modeling for High Levels of Photovoltaics Penetration  

DOE Green Energy (OSTI)

The goal of this report is to evaluate the likely avoided generation, fuels, and emissions resulting from photovoltaics (PV) deployment in several U.S. locations and identify new tools, methods, and analysis to improve understanding of PV impacts at the grid level.

Denholm, P.; Margolis, R.; Milford, J.

2008-02-01T23:59:59.000Z

431

High Penetration, Grid Connected Photovoltaic Technology Codes and Standards: Preprint  

DOE Green Energy (OSTI)

This paper reports the interim status in identifying and reviewing photovoltaic (PV) codes and standards (C&S) and related electrical activities for grid-connected, high-penetration PV systems with a focus on U.S. electric utility distribution grid interconnection.

Basso, T. S.

2008-05-01T23:59:59.000Z

432

Survey of U.S. Line-Connected Photovoltaic Systems  

Science Conference Proceedings (OSTI)

More than 200 line-connected photovoltaic (PV) systems are now operating in 27 states, totaling more than 11 MW. Experiences at these installations provide background for utility examination of PV technology as an opportunity for pollution-free generation, demand-side management, and potential business investment.

1989-03-15T23:59:59.000Z

433

Solar Photovoltaic Capacity F t P f d P li  

E-Print Network (OSTI)

6/19/2013 1 Solar Photovoltaic ­ Capacity F t P f d P li Generating Resources Advisory Committee Advisor Model (SAM), version 2013.1.15 Technology: Solar PV (PVWatts system model)Technology: Solar PV Plant life: 25 years Weather data: Typical/representative of longterm averages; not one full historical

434

Research of PV Application on  

E-Print Network (OSTI)

-intertied Solar Power without Batteries is what the Federal incentives and State rebates are encouraging people DC off-grid solar power systems are most often used to power DC appliances in RV's, boats, and cabins is not accessible. DC solar power is less expensive than AC solar power because an inverter is not required

Netoff, Theoden

435

Microstructure and electrical mechanism of Sn-xAg-Cu PV-ribbon for solar cells  

Science Conference Proceedings (OSTI)

The microstructure, fusion current, and series resistance of photovoltaic (PV) ribbon containing SAC105 and SAC305 alloys are investigated. After reflow, the interfacial microstructures of solder/Cu and solder/Ag were observed and an electrical current ... Keywords: Electrical properties, Photovoltaic ribbon, Sn-Ag-Cu

Kuan-Jen Chen, Fei-Yi Hung, Truan-Sheng Lui, Li-Hui Chen, Dai-Wen Qiu, Ta-Lung Chou

2014-03-01T23:59:59.000Z

436

DOE and AID stand-alone photovoltaic activities. Status report  

DOE Green Energy (OSTI)

The NASA Lewis Research Center (LeRC) is managing stand-alone photovoltaic (PV) system activities sponsored by the US Department of Energy (DOE) and the US Agency for International Development (AID). The DOE project includes village PV power demonstration projects in Gabon (four sites) and the Marshall Islands, PV-powered medical refrigerators in six countries, PV system microprocessor control development activities and PV-hybrid system assessments. The AID project includes a large village systen in Tunisia, a water pumping/grain grinding project in Upper Volta, five medical clinics in four countries, PV-powered medical refrigerator field tests in eighteen countries and one PV-powered remote earth station application. This paper reviews these PV activities and summarizes significant findings to date.

Bifano, W.J.; Ratacajczak, A.F.

1983-01-01T23:59:59.000Z

437

Novel anti-islanding detection method and maximum power tracking algorithm for grid connected photovoltaic systems with interleaved dc/dc converters  

Science Conference Proceedings (OSTI)

Photovoltaic (PV) energy, which has proven to be environmentally friendly and sustainable compared to traditional energy sources, has gained widespread attention in recent years. The grid-tied PV energy conversion system has become a preferred choice ...

Ahmad Yafaoui

2012-01-01T23:59:59.000Z

438

Pioneering NREL research has been instrumental in developing cadmium telluride (CdTe) and other thin-film photovoltaic (PV) technologies to the point where they are poised to take off  

E-Print Network (OSTI)

offset the cost of additional manufacturing capacity. In addition, NREL's new Science and Technology near-term manufacturing, building the knowledge and technology base for future manufacturing on. PIX 16735 Thin-Film Manufacturing Process Gives Edge to Photovoltaic Start-Up Abound Solar

439

Living off-grid in an arid environment without a well : can residential and commercial/industrial water harvesting help solve water supply problems?  

Science Conference Proceedings (OSTI)

Our family of three lives comfortably off-grid without a well in an arid region ({approx}9 in/yr, average). This year we expect to achieve water sustainability with harvested or grey water supporting all of our needs (including a garden and trees), except drinking water (about 7 gallons/week). We discuss our implementation and the implication that for an investment of a few thousand dollars, many single family homes could supply a large portion of their own water needs, significantly reducing municipal water demand. Generally, harvested water is very low in minerals and pollutants, but may need treatment for microbes in order to be potable. This may be addressed via filters, UV light irradiation or through chemical treatment (bleach). Looking further into the possibility of commercial water harvesting from malls, big box stores and factories, we ask whether water harvesting could supply a significant portion of potable water by looking at two cities with water supply problems. We look at the implications of separate municipal water lines for potable and clean non-potable uses. Implications on changes to future building codes are explored.

Axness, Carl L.; Ferrando, Ana

2010-08-01T23:59:59.000Z

440

NREL: Photovoltaics Research - Facilities  

NLE Websites -- All DOE Office Websites (Extended Search)

Facilities Facilities NREL's world-class research facilities provide the venue for innovative advances in photovoltaic technologies and applications. These facilities within the National Center for Photovoltaics (NCPV) serve both multi-use and dedicated-use functions. We encourage our research colleagues in industry, universities, and other laboratories to pursue opportunities in working with our staff in these facilities. Dedicated-Use Facilities Photo of a red-hot coil glowing inside a round machine. Research within these facilities focuses on targeted areas of interest that require specific tools, techniques, or unique capabilities. Our two main dedicated-use facilities are the following: Outdoor Test Facility (OTF) OTF researchers study and evaluate advanced or emerging PV technologies

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Temperature compensated photovoltaic array  

DOE Patents (OSTI)

A temperature compensated photovoltaic module (20) comprised of a series of solar cells (22) having a thermally activated switch (24) connected in parallel with several of the cells (22). The photovoltaic module (20) is adapted to charge conventional batteries having a temperature coefficient (TC) differing from the temperature coefficient (TC) of the module (20). The calibration temperatures of the switches (24) are chosen whereby the colder the ambient temperature for the module (20), the more switches that are on and form a closed circuit to short the associated solar cells (22). By shorting some of the solar cells (22) as the ambient temperature decreases, the battery being charged by the module (20) is not excessively overcharged at lower temperatures. PV module (20) is an integrated solution that is reliable and inexpensive.

Mosher, Dan Michael (Plano, TX)

1997-11-18T23:59:59.000Z

442

Temperature compensated photovoltaic array  

DOE Patents (OSTI)

A temperature compensated photovoltaic module comprises a series of solar cells having a thermally activated switch connected in parallel with several of the cells. The photovoltaic module is adapted to charge conventional batteries having a temperature coefficient differing from the temperature coefficient of the module. The calibration temperatures of the switches are chosen whereby the colder the ambient temperature for the module, the more switches that are on and form a closed circuit to short the associated solar cells. By shorting some of the solar cells as the ambient temperature decreases, the battery being charged by the module is not excessively overcharged at lower temperatures. PV module is an integrated solution that is reliable and inexpensive. 2 figs.

Mosher, D.M.

1997-11-18T23:59:59.000Z

443

Characterization of Photovoltaic Concentrators  

DOE Green Energy (OSTI)

This paper will describe the resources at the National Renewable Energy Laboratory (NREL) for performing characterization of photovoltaic (PV) materials designed for operation under concentrated light. NREL has the capability to measure devices ranging from very small, unencapsulated research cells to reasonably sized, environmentally protected modules. Data gathering and interpretation are also ongoing areas of revision and improvement. The main goal of the current research is to reduce the measurement uncertainty to the lowest practical value. At present, the state of the art is limited at a ?5% level in measuring efficiency accurately.

Kiehl, J.; Emery, E.

2005-01-01T23:59:59.000Z

444

Photovoltaic Degradation Risk: Preprint  

SciTech Connect

The ability to accurately predict power delivery over the course of time is of vital importance to the growth of the photovoltaic (PV) industry. Important cost drivers include the efficiency with which sunlight is converted into power, how this relationship changes over time, and the uncertainty in this prediction. An accurate quantification of power decline over time, also known as degradation rate, is essential to all stakeholders - utility companies, integrators, investors, and researchers alike. In this paper we use a statistical approach based on historical data to quantify degradation rates, discern trends and quantify risks related to measurement uncertainties, number of measurements and methodologies.

Jordan, D. C.; Kurtz, S. R.

2012-04-01T23:59:59.000Z

445

Developed by: Solar Permitting Work Group  

E-Print Network (OSTI)

) 3 g p ( ) ·Tropical country like India, available for most of the year #12;Grid connected Solar-PV DAY Off-grid Solar-PV (islanded) DAY Other NIGHT Other renewable Energy STORAGE #12;Photovoltaic 100KWp Bangalore 5 100KWp Lakshadeep 6 100KWp Hyderabad · 2.12 MW only (2008) #12;Pl t f hi Solar-PV

446

Hybrid photovoltaic thermal collector (PVT) for the production of hot water and electricity  

Science Conference Proceedings (OSTI)

The main concept of developing the hybrid Photovoltaic/Thermal (PV/T) is to increase the efficiency of the solar and thermal collector. It is known that the efficiency of the Photovoltaic solar collector is decreases when the ambient temperature increased ... Keywords: absorber collectors, hybrid photovoltaic thermal (PVT), thermal and electrical efficiency

Adnan Ibrahim; K. Sopian; M. Y. Othman; M. H. Ruslan; M. A. Alghoul; M. Yahya; Azami Zaharim

2008-11-01T23:59:59.000Z

447

Extremum seeking control techniques applied to photovoltaic systems with multimodal power curves  

E-Print Network (OSTI)

) Current(A) 0 200 320025 I-V curve P-V curve VMPP Power(W) 1000 Fig. 1. Photovoltaic cell I-V and P generator method, open-circuit voltage photovoltaic cell test method, incremental conductance method (CI) [5Extremum seeking control techniques applied to photovoltaic systems with multimodal power curves

Recanati, Catherine

448

Conjugated Polymer Photovoltaic Cells Kevin M. Coakley and Michael D. McGehee*  

E-Print Network (OSTI)

Conjugated Polymer Photovoltaic Cells Kevin M. Coakley and Michael D. McGehee* Department semiconductors for photovoltaic cells because they are strong absorbers and can be deposited on flexible to create, transport, and store electricity. For photovoltaic (PV) cells to gain widespread ac- ceptance

McGehee, Michael

449

Graphene-based photovoltaic cells for near-field thermal energy conversion  

E-Print Network (OSTI)

Graphene-based photovoltaic cells for near-field thermal energy conversion Riccardo Messina to a photovoltaic cell can be largely enhanced because of the contribution of evanescent photons, in particular important source of energy. By approaching a photovoltaic (PV) cell3 in proximity of a thermal emitter

Paris-Sud XI, Université de

450

Maximum Power Point Tracking Control for Photovoltaic System Using Adaptive Neuro-Fuzzy  

E-Print Network (OSTI)

converter. II. MATHEMATICAL MODELING OF PHOTOVOLTAIC CELL A PV cell can be represented by an equivalentMaximum Power Point Tracking Control for Photovoltaic System Using Adaptive Neuro- Fuzzy "ANFIS availability and vast potential, world has turned to solar photovoltaic energy to meet out its ever increasing

Recanati, Catherine

451

Effects of molecular interface modification in hybrid organic-inorganic photovoltaic cells  

E-Print Network (OSTI)

Effects of molecular interface modification in hybrid organic-inorganic photovoltaic cells Chiatzun in hybrid TiO2/regioregular poly 3-hexylthiophene P3HT photovoltaic cells. By employing a series of para in the field of organic photovoltaic PV cells1­7 and dye-sensitized solar cells DSSCs Refs. 7­10 as part

McGehee, Michael

452

1 Copyright 2011 by ASME MATERIAL OPTIMIZATION FOR CONCENTRATED SOLAR PHOTOVOLTAIC AND  

E-Print Network (OSTI)

photovoltaic and hot water co-generation based on various solar cell technologies and micro channel heat sinks. Concentrated solar Photovoltaic (PV) based on multi junction cells can yield around 35-40% efficiency is moderate [3] in comparison to the concentrated solar photovoltaic, for which multi-junction cells

453

Multiport DC/DC Converter for Stand-alone Photovoltaic Lighting System with Battery Storage  

Science Conference Proceedings (OSTI)

Photovoltaic energy has nowadays an increased importance in electrical power applications. However, the output power provided via the photovoltaic conversion process depends on solar irradiation and temperature. Therefore a multiple-input DC/DC converter ... Keywords: Multiport DC/DC Converter, photovoltaic (PV), battery, charge/discharge

Shengyong Liu; Xing Zhang; Haibin Guo; Jun Xie

2010-06-01T23:59:59.000Z

454

Photovoltaic-Based Projects and Ventures: Development Guides  

Science Conference Proceedings (OSTI)

Photovoltaic (PV)-based systems have demonstrated the ability to help utilities reduce their cost of service, expand their customer service options, increase their customer base, decrease emissions, and enhance their public image. This report provides an organized approach to developing PV-based projects, programs, or ventures. It discusses how PV systems can be effectively used and describes the advantages, disadvantages, costs, and limitations of such systems. In addition, the report offers insight int...

1999-03-30T23:59:59.000Z

455

Feasibility of High-Efficiency Photovoltaics Breakthrough Research  

Science Conference Proceedings (OSTI)

For the past three decades, solar photovoltaic (PV) installed capacity has rapidly grown and its price has steadily declined. If these historic trends of technology and market development can be maintained, it is likely that PV resources will contribute about 10% of new U.S. capacity within 25 years. However, PV technologies may still require subsidies to compete with other energy sources. This study investigated the potential and means for significant cost reductions to enable more widespread adoption o...

2005-10-18T23:59:59.000Z

456

Solar Photovoltaics Market Update: Volume 6: Q2 2013  

Science Conference Proceedings (OSTI)

Volume 6 of EPRIs quarterly Solar PV Market Update provides continued insight into some of the front line trends that are afoot throughout the photovoltaic segment. Like previous Updates, it synthesizes primary and secondary data from multiple sources in an effort to highlight economic, policy, and technology developments that are likely to impact utility solar PV investment and planning efforts.This report examines recent upheaval in the PV inverter landscape, marked by equipment ...

2013-06-30T23:59:59.000Z

457

Solar Photovoltaics Market Update, Volume 5: Q1 2013  

Science Conference Proceedings (OSTI)

Volume 5 of EPRI's quarterly Solar PV Market Update provides continued insight into some of the front line trends that are afoot throughout the photovoltaic segment. Like previous Updates, it synthesizes primary as well as secondary data from multiple sources in an effort to highlight economic, policy, and technology developments that are likely to impact utility solar PV investment and planning efforts. Specifically, this report examines global PV installation and market issues, providing key ...

2013-04-04T23:59:59.000Z

458

Solar Photovoltaics Market Update: Volume 8: Q4 2013  

Science Conference Proceedings (OSTI)

Volume 8 of EPRIs quarterly Solar PV Market Update provides continued insight into some of the front line trends that are afoot throughout the photovoltaic segment. As with previous Updates, it synthesizes primary and secondary data from multiple sources in an effort to highlight economic, policy, and technology developments that are likely to impact utility solar PV investment and planning efforts.This report first highlights PV component, system, and PPA pricing developments ...

2013-12-23T23:59:59.000Z

459

University Crystalline Silicon Photovoltaics Research and Development  

DOE Green Energy (OSTI)

The overall goal of the program is to advance the current state of crystalline silicon solar cell technology to make photovoltaics more competitive with conventional energy sources. This program emphasizes fundamental and applied research that results in low-cost, high-efficiency cells on commercial silicon substrates with strong involvement of the PV industry, and support a very strong photovoltaics education program in the US based on classroom education and hands-on training in the laboratory.

Ajeet Rohatgi; Vijay Yelundur; Abasifreke Ebong; Dong Seop Kim

2008-08-18T23:59:59.000Z

460

Factors Associated with Photovoltaic System Costs (Topical Issues Brief)  

Science Conference Proceedings (OSTI)

A variety of factors can affect the cost of photovoltaic systems. This report analyses the relationship among such factors by using information entered into a voluntary registry of PV systems and performing regression analyses. The results showed statistically significant relationships between photovoltaic system cost and (a) grid connection, (b) installation year, (c) areas where the utility had entered into volume purchasing agreements.

Mortensen, J.

2001-06-12T23:59:59.000Z

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Innovation and production in the global solar photovoltaic industry  

Science Conference Proceedings (OSTI)

The global development of solar photovoltaic power is seen as a potentially major technology in the pursuit of alternative energy sources. Given its evolutionary nature, in terms of both technology and the market, there is some discernible divergence ... Keywords: Innovation, Patent, Production, Solar photovoltaic (PV) market

Show-Ling Jang; Li-Ju Chen; Jennifer H. Chen; Yu-Chieh Chiu

2013-03-01T23:59:59.000Z

462

Performance analysis of greenhouses with integrated photovoltaic modules  

Science Conference Proceedings (OSTI)

Thanks to the DM 19.02.2007, Italian government supported the development and the expansion of solar photovoltaic in Italy. The feed-in tariff had a great success, and like in Spain and Germany big size photovoltaic plants have been built, especially ... Keywords: PV modules, TRNSYS 16 simulation, solar greenhouse

Maurizio Carlini; Mauro Villarini; Stefano Esposto; Milena Bernardi

2010-03-01T23:59:59.000Z

463

A variable voltage MPPT control method for photovoltaic generation system  

Science Conference Proceedings (OSTI)

To increase the output efficiency of a photovoltaic (PV) generation system it is important to have an efficient maximum power point tracking (MPPT) technique. This paper describes the analysis, design and implementation of an efficient tracking method ... Keywords: maximum power point tracking (MPPT), photovoltaic generation system, pulse-width-modulation (PWM), solar energy, variable voltage

Liu Liqun; Wang Zhixin

2009-04-01T23:59:59.000Z

464

Photovoltaics program plan, FY 1991--FY 1995  

SciTech Connect

This program plan describes the goals and philosophy of DOE National Photovoltaics Program and its major research and development activities for fiscal years (FY) 1991 through 1995. The plan represents a consensus among researchers and manufacturers, as well as current and potential users of photovoltaics (PV). It defines the activites that we believe are necessary to continue the rapid progress toward acceptance of photovoltaics as a serious candidate for cost-competitive electric power generation by the utility, transportation, buildings, and industrial sectors. A succesful National Photovoltaics Program will help achieve many of our national priorities. The mission of the National Photovoltaics Program is to help US industry to develop photovoltaic technology for large-scale generation of economically competitive electric power in the United States, making PV a significant part of our national energy mix. To fully achieve this, we must continue to work toward the long-term goals established in our previous program plan: reducing the price of delivered electricity to 5 to 6 cents per kilowatt-hour (kWh), increasing lifetimes to 30 years, and increasing module efficiencies to 15% for flat-plate and 25% for concentrator technologies. If progress continues at its current pace, we expect that the PV industry will have installed at least 1000 megawatts (MW) of capacity in the United States and 500 MW internationally by the year 2000.

1991-10-01T23:59:59.000Z

465

City of San Diego RFP for Power Purchase (PV)  

NLE Websites -- All DOE Office Websites (Extended Search)

City of San Diego City of San Diego Environmental Services Department Energy Conservation and Management Division Request for Proposal For Power Purchase of Renewable Energy (Photovoltaics) For City Facilities The City of San Diego is seeking a firm, or a team of firms, to provide cost effective solar photovoltaic electric generating systems at eight City sites. The City intends to enter into power purchase agreement(s) for terms up to twenty years with solar PV developer(s) at these sites. The developers may also be asked to assist the City with identifying implementing solar PV projects at other sites depending upon the success of the initial program. The City evaluated twenty four facilities that appear to have potential of accommodating solar PV systems ranging in size from 30 kilowatts to 1

466

Metamaterial-based integrated plasmonic absorber/emitter for solar thermo-photovoltaic This article has been downloaded from IOPscience. Please scroll down to see the full text article.  

E-Print Network (OSTI)

coupled to a photovoltaic (PV) cell for power generation. By employing a low reflectivity refractory metal using photovoltaic (PV) cells, light trapping and enhanced absorbance by surface plasmons have beenMetamaterial-based integrated plasmonic absorber/emitter for solar thermo-photovoltaic systems

Shvets, Gennady

467

Solar Photovoltaics: Status, Costs, and Trends  

Science Conference Proceedings (OSTI)

This White Paper addresses the history, status, and trends of flat-plate solar photovoltaic power technologies in both crystalline silicon and thin-film forms. Perspectives are provided on the cost and performance, as well as, the materials used for producing PV modules. The major milestones and trends in PV power system development are described, looking back to the 1970's, and forward to the next 30 years. Current incentives and policies are also discussed with focus on utility engagement in PV power. ...

2009-12-31T23:59:59.000Z

468

Photovoltaics performance and reliability workshop  

DOE Green Energy (OSTI)

This document consists of papers and viewgraphs compiled from the proceedings of a workshop held in September 1992. This workshop was the fifth in a series sponsored by NREL/DOE under the general subject areas of photovoltaic module testing and reliability. PV manufacturers, DOE laboratories, electric utilities and others exchanged technical knowledge and field experience. The topics of cell and module characterization, module and system performance, materials and module durability/reliability research, solar radiation, and applications are discussed.

Mrig, L. [ed.] [ed.

1992-11-01T23:59:59.000Z

469

Photovoltaics performance and reliability workshop  

DOE Green Energy (OSTI)

This document consists of papers and viewgraphs compiled from the proceedings of a workshop held in September 1992. This workshop was the fifth in a series sponsored by NREL/DOE under the general subject areas of photovoltaic module testing and reliability. PV manufacturers, DOE laboratories, electric utilities and others exchanged technical knowledge and field experience. The topics of cell and module characterization, module and system performance, materials and module durability/reliability research, solar radiation, and applications are discussed.

Mrig, L. (ed.) [ed.

1992-01-01T23:59:59.000Z

470

Economic Feasibility of Recycling Photovoltaic Modules  

Science Conference Proceedings (OSTI)

The market for photovoltaic (PV) electricity generation has boomed over the last decade, and its expansion is expected to continue with the development of new technologies. Taking into consideration the usage of valuable resources and the generation of emissions in the life cycle of photovoltaic technologies dictates proactive planning for a sound PV recycling infrastructure to ensure its sustainability. PV is expected to be a 'green' technology, and properly planning for recycling will offer the opportunity to make it a 'double-green' technology - that is, enhancing life cycle environmental quality. In addition, economic feasibility and a sufficient level of value-added opportunity must be ensured, to stimulate a recycling industry. In this article, we survey mathematical models of the infrastructure of recycling processes of other products and identify the challenges for setting up an efficient one for PV. Then we present an operational model for an actual recycling process of a thin-film PV technology. We found that for the case examined with our model, some of the scenarios indicate profitable recycling, whereas in other scenarios it is unprofitable. Scenario SC4, which represents the most favorable scenario by considering the lower bounds of all costs and the upper bound of all revenues, produces a monthly profit of $107,000, whereas the least favorable scenario incurs a monthly loss of $151,000. Our intent is to extend the model as a foundation for developing a framework for building a generalized model for current-PV and future-PV technologies.

Choi, J.K.; Fthenakis, V.

2010-12-01T23:59:59.000Z

471

Photovoltaic energy: Program overview, fiscal year 1990  

DOE Green Energy (OSTI)

This summary is prepared each year to provide an overview of the government-funded activities within the National Photovoltaics Program. The 1990 PV Program Achievements are listed. Launched the PV Manufacturing Technology initiative, designed to systematically lower PV module costs. Inaugurated the PV Concentrator Technologies Initiative by signing eight multiyear, cost-shared technology development subcontracts with concentrator companies. Established the PV Polycrystalline Thin-Film Initiative by signing six multiyear, cost-shared technology development subcontracts with six polycrystalline thin-film companies. Continued the Amorphous Silicon Project by awarding three new research and development contracts. Focused the resources of three program laboratories on finding solutions to industry's manufacturing problems: the Photovoltaic Device Fabrication Laboratory at Sandia National Laboratories and the Module Failure Analysis Laboratory and the Encapsulant Research Laboratory at SERI. Established an ongoing program to assist utilities in using PV for cost-effective, high-value applications. Completed nearly all of the construction planned for the first phase of PVUSA at Davis, California. Worked with the crystalline silicon PV industry on novel, low-cost cell fabrication processes and on resolving encapsulant problems. Took part in the development of qualification procedures tests for thin- and thick-film flat-plate modules and concentrator modules.

Not Available

1991-07-01T23:59:59.000Z

472

Illuminating the Pecking Order in Off-Grid Lighting: A Demonstration of LED Lighting for Saving Energy in the Poultry Sector  

Science Conference Proceedings (OSTI)

The Lumina Project and Lighting Africa conducted a full-scale field test involving a switch from kerosene to solar-LED lighting for commercial broiler chicken production at an off-grid farm in Kenya. The test achieved lower operating costs, produced substantially more light, improved the working environment, and had no adverse effect on yields. A strategy using conventional solar-fluorescent lighting also achieved comparable yields, but entailed a six-fold higher capital cost and significantly higher recurring battery replacement costs. Thanks to higher energy and optical efficiencies, the LED system provided approximately twice the illumination to the chicken-production area and yet drew less than half the power.At the study farm, 3000 chickens were grown in each of three identical houses under kerosene, fluorescent, and LED lighting configurations. Under baseline conditions, a yearly expenditure of 1,200 USD is required to illuminate the three houses with kerosene. The LED system eliminates this fuel use and expense with a corresponding simple payback time of 1.5 years, while the solar-fluorescent system has a payback time of 9.3 years. The corresponding reduction in fuel expenditure in both cases represents a 15percent increase in after-tax net income (revenues minus expenses) across the entire business operation. The differential cost-effectiveness between the LED and fluorescent systems would be substantially greater if the fluorescent system were upsized to provide the same light as the LED system. Providing light with the fluorescent or LED systems is also far more economical than connecting to the grid in this case. The estimated grid-connection cost at this facility is 1.7 million Kenya Schillings (approximately 21,250 USD), which is nearly six-times the cost of the fluorescent system and 35-times the cost of the LED system.The LED system also confers various non-energy benefits. The relative uniformity of LED lighting, compared to the fluorescent or kerosene lighting, reduced crowding which in turn created a less stressful environment for the chickens. The far higher levels of illumination also created a better environment for the workers, while eliminating the time required for obtaining fuel and maintaining kerosene lanterns. An additional advantage of the LED system relative to the solar fluorescent system was that the former does not require a skilled technician to carry out the installation. The portable LED system lighting layout is also more easily adjusted than that of the hardwired fluorescent systems. Furthermore, switching to the LED system avoids over one metric ton of carbon dioxide emissions per house on an annual basis compared to kerosene. There is high potential for replication of this particular LED lighting strategy in the developing world. In order to estimate the scale of kerosene use and the potential for savings, more information is needed on the numbers of chickens produced off-grid, as well as lighting uses for other categories of poultry production (egg layers, indigenous broilers ). Our discovery that weight gain did not slow in the solar-fluorescent house after it experienced extended lighting outages beginning on day 14 of the 35-day study suggests that conventional farming practices in Kenyan broiler operations may call for more hours of lighting than is needed to achieve least-cost production.

Tracy, Jennifer; Mills, Evan

2010-11-06T23:59:59.000Z

473

Flat-Plate Photovoltaic Performance Testing at the Solar Technology Acceleration Center (SolarTAC)  

Science Conference Proceedings (OSTI)

The flat-plate photovoltaic (PV) performance testing project at the Solar Technology Acceleration Center (SolarTAC) is a multi-year, data-driven effort to provide unbiased field testing of a variety of commercial-scale solar PV systems under different environmental and seasonal conditions. Its core aim is to assess and characterize the operation of both well-established as well as less mature PV module technologies to ultimately inform future PV product investment decisions by electric utilities and ...

2013-10-30T23:59:59.000Z

474

Breakeven Prices for Photovoltaics on Supermarkets in the United States  

DOE Green Energy (OSTI)

The photovoltaic (PV) breakeven price is the PV system price at which the cost of PV-generated electricity equals the cost of electricity purchased from the grid. This point is also called 'grid parity' and can be expressed as dollars per watt ($/W) of installed PV system capacity. Achieving the PV breakeven price depends on many factors, including the solar resource, local electricity prices, customer load profile, PV incentives, and financing. In the United States, where these factors vary substantially across regions, breakeven prices vary substantially across regions as well. In this study, we estimate current and future breakeven prices for PV systems installed on supermarkets in the United States. We also evaluate key drivers of current and future commercial PV breakeven prices by region. The results suggest that breakeven prices for PV systems installed on supermarkets vary significantly across the United States. Non-technical factors -- including electricity rates, rate structures, incentives, and the availability of system financing -- drive break-even prices more than technical factors like solar resource or system orientation. In 2020 (where we assume higher electricity prices and lower PV incentives), under base-case assumptions, we estimate that about 17% of supermarkets will be in utility territories where breakeven conditions exist at a PV system price of $3/W; this increases to 79% at $1.25/W (the DOE SunShot Initiative's commercial PV price target for 2020). These percentages increase to 26% and 91%, respectively, when rate structures favorable to PV are used.

Ong, S.; Clark, N.; Denholm, P.; Margolis, R.

2013-03-01T23:59:59.000Z

475

Central Georgia EMC - Photovoltaic Rebate Program | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Central Georgia EMC - Photovoltaic Rebate Program Central Georgia EMC - Photovoltaic Rebate Program Central Georgia EMC - Photovoltaic Rebate Program < Back Eligibility Residential Savings Category Solar Buying & Making Electricity Maximum Rebate $4,500 Program Info State Georgia Program Type Utility Rebate Program Rebate Amount $450/kW installed capacity Provider Central Georgia Electric Membership Corporation In June 2008, Central Georgia Electric Membership Corporation (CGEMC) began offering a rebate of $450 per kilowatt (kW) to residential members who install photovoltaic (PV) systems that are interconnected and net-metered. To qualify, PV systems must have a warranty of five or more years and must be installed by a licensed contractor. In addition, PV systems are limited to 10 kW in capacity and must be installed in accordance with all

476

Progress Energy Florida - SunSense Solar Photovoltaics Rebate Program  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Progress Energy Florida - SunSense Solar Photovoltaics Rebate Progress Energy Florida - SunSense Solar Photovoltaics Rebate Program (Florida) Progress Energy Florida - SunSense Solar Photovoltaics Rebate Program (Florida) < Back Eligibility Residential Savings Category Solar Buying & Making Electricity Maximum Rebate $20,000 Program Info State Florida Program Type Utility Rebate Program Rebate Amount Varies '''''All funds for Progress Energy Florida's SunSense Solar PV Rebate program have been committed at this time.''''' Progress Energy Florida (PEF) has allocated $1.9 million per year towards residential photovoltaic (PV) incentives. PEF will accept applications annually from residential customers both wishing to install a PV system and qualifying for a rebate. Reservations for a rebate will be issued on a first-come basis, however a reservation does not guarantee that a rebate

477

Plant performance for PV1 and PV2: SMUD (Sacramento Municipal Utility District) PV2, Final report 2, April 1986-March 1987  

SciTech Connect

The Sacramento Municipal Utility Distric (SMUD) photovoltaic project is a phased installation of a 100 megawatt central station photovoltaic (PV) power plant that is being constructed adjacent to the Rancho Seco Nuclear Generating Station, 30 miles southeast of Sacramento, California. SMUD, with cofunding from the U.S. Department of Energy (DOE) and the California State Department of Enrgy has designed, procured, installed, and operated two 1,000 kilowatt power generating plants (PV1 and PV2) as the first two phases of the project (Figure No. 1). PV1 deferred for budgetary reasons and to evaluate new PV technologies. Long-range load projections for the SMUD service area indicate theneed for new peaking power generation. Plans prior to the initiation of this project included coal-fired, hydroelectric and geothermal power plants. Environmental and permitting constraints within California introduced considerable uncertainty into the timing and cost of other generation options. This projectwas, therefore, initiated to proide an economic and technical basis for future electrical generation using solar energy. Ther performance data presented herein was measured, stored, and reduced by the onsite plant control and data acquisition computer.

Collier, D.

1988-03-01T23:59:59.000Z

478

U.S. Aims for Zero-Energy: Support for PV on New Homes  

Science Conference Proceedings (OSTI)

As a market segment for solar photovoltaic (PV) adoption, new homes have a number of attractive attributes. Homebuyers can easily roll the cost of the PV system into their mortgage and, with rebates or other financial incentives, potentially realize an immediate net positive cash flow from the investment. PV system performance can be optimized by taking roof orientation, shading, and other structural factors into account in the design of new homes. Building-integrated photovoltaics (BIPV), which are subject to fewer aesthetic concerns than traditional, rack-mounted systems, are well-suited to new construction applications. In large new residential developments, costs can be reduced through bulk purchases and scale economies in system design and installation. Finally, the ability to install PV as a standard feature in new developments - like common household appliances - creates an opportunity to circumvent the high transaction costs and other barriers typically confronted when each individual homeowner must make a distinct PV purchase decision.

Barbose, Galen; Wiser, Ryan; Bolinger, Mark

2006-05-11T23:59:59.000Z

479

Maximum Photovoltaic Penetration Levels on Typical Distribution Feeders: Preprint  

DOE Green Energy (OSTI)

This paper presents simulation results for a taxonomy of typical distribution feeders with various levels of photovoltaic (PV) penetration. For each of the 16 feeders simulated, the maximum PV penetration that did not result in steady-state voltage or current violation is presented for several PV location scenarios: clustered near the feeder source, clustered near the midpoint of the feeder, clustered near the end of the feeder, randomly located, and evenly distributed. In addition, the maximum level of PV is presented for single, large PV systems at each location. Maximum PV penetration was determined by requiring that feeder voltages stay within ANSI Range A and that feeder currents stay within the ranges determined by overcurrent protection devices. Simulations were run in GridLAB-D using hourly time steps over a year with randomized load profiles based on utility data and typical meteorological year weather data. For 86% of the cases simulated, maximum PV penetration was at least 30% of peak load.

Hoke, A.; Butler, R.; Hambrick, J.; Kroposki, B.

2012-07-01T23:59:59.000Z

480

Radiometric Measurements and Data for Evaluating Photovoltaics  

DOE Green Energy (OSTI)

The National Renewable Energy Laboratory (NREL) Photovoltiac Radiometric Measurements Task ddresses the impact of solar and optical radiation on photovoltaic (PV) devices. The task maintains spectral and broadband calibration capability directly traceable to the National Institute of Standards and Technology (NIST) and the World Radiometric Reference (WRR) of the World Meteorological Organization (WMO).

Myers, D. R.; Andreas, A.; Rymes, M.; Stoffel, T.; Reda, I.; Wilcox, S.; Treadwell, J.

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "off-grid photovoltaics pv" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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481

INTERNATIONAL ENERGY AGENCY PHOTOVOLTAIC POWER SYSTEMS PROGRAMME  

E-Print Network (OSTI)

that provide necessary weather data to compute solar radiation quantities. This survey of solar databases efforts which accelerate the development and deployment of photovoltaic solar energy as a significant SUMMARY Solar radiation at ground level is a necessary input for performances modeling and sizing of PV

482

SMUD - Non-Residential PV Incentive Program | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Non-Residential PV Incentive Program Non-Residential PV Incentive Program SMUD - Non-Residential PV Incentive Program < Back Eligibility Commercial Industrial Nonprofit Savings Category Solar Buying & Making Electricity Maximum Rebate $650,000 for up-front incentives at current $0.65/W incentive level. Program Info State California Program Type Utility Rebate Program Rebate Amount Expected Performance Based Incentive (for systems up to 1 MW): 0.65/watt AC; incentive adjusted based on expected performance Performance Based Incentive: 0.10/kWh for 5 years or 0.06/kWh for 10 years Incentives are decreased for systems > 1 MW Provider Sacramento Municipal Utility District SMUD offers cash incentives to commercial, industrial, and non-profit customers who install solar photovoltaic (PV) systems. Customers have the

483

City of Lompoc Utilities - PV Rebate Program | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PV Rebate Program PV Rebate Program City of Lompoc Utilities - PV Rebate Program < Back Eligibility Commercial Nonprofit Residential Savings Category Solar Buying & Making Electricity Maximum Rebate 50% the system cost, up to $50,000 Program Info Funding Source utility surcharge State California Program Type Utility Rebate Program Rebate Amount $2.00 per watt Provider Customer Service City of Lompoc Utilities provides rebates to its electric customers who purchase and install photovoltaic (PV) systems. The rebate is $2.00 per watt-AC. The incentive amount may not exceed 50% the cost of the system, up to a maximum of $50,000. To qualify for the rebate the system must meet all the criteria as defined by the Lompoc City Electric interconnection agreement for self-generating electric systems and the requirements set forth by the California Energy

484

PV Manufacturing R&D Accomplishments and Status  

DOE Green Energy (OSTI)

The U.S. Department of Energy (DOE) PV Manufacturing Research and Development Project has worked for 11 years in partnership with the U.S. photovoltaic industry to reduce manufacturing costs while significantly scaling up production capacity. Over this period, the PV Manufacturing R&D Project has issued seven solicitations for partnerships that have resulted in over 50 cost-shared R&D subcontracts that addressed the cost and capacity goals of the Project, including 10 that are currently active. The previous and current contracts have typically focused on addressing Project goals in one of two areas: module manufacturing and balance-of-systems (BOS)/systems work. The majority of the DOE investment has been targeted toward module manufacturing. The partnerships have resulted in a significant and measurable increase in PV module/systems production capacity, a decrease in PV manufacturing costs, and a subsequent return on the joint public and private investments facilitated by the Project.

Mooney, D.; Mitchell, R.; Witt, E.; King, R.; Ruby, D.

2003-11-01T23:59:59.000Z

485

Progress Energy Florida - SunSense Commercial PV Incentive Program |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Progress Energy Florida - SunSense Commercial PV Incentive Program Progress Energy Florida - SunSense Commercial PV Incentive Program Progress Energy Florida - SunSense Commercial PV Incentive Program < Back Eligibility Commercial Savings Category Solar Buying & Making Electricity Maximum Rebate 130,000 per participant Program Info Start Date 03/15/2011 State Florida Program Type Utility Rebate Program Rebate Amount First 10 kW: 2/watt 11 kW - 50 kW: 1.50/watt 51 kW - 100 kW: 1/watt Provider Business Customer Service '''''Progress Energy Florida will begin accepting applications at 10:00 a.m. October 1, 2012, for customers to apply for the 2013 rebates.''''' In March 2011, Progress Energy Florida began offering incentives to commercial customers who install photovoltaic (PV) systems. Incentive rates are based on a tiered structure:

486

Lassen Municipal Utility District - PV Rebate Program | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Lassen Municipal Utility District - PV Rebate Program Lassen Municipal Utility District - PV Rebate Program Lassen Municipal Utility District - PV Rebate Program < Back Eligibility Commercial Residential Savings Category Solar Buying & Making Electricity Maximum Rebate Residential: $5,000 or 50% of system cost, whichever is less Commercial: $23,000 or 50% of system cost, whichever is less. Program Info State California Program Type Utility Rebate Program Rebate Amount Residential: $3.00/W-AC Commercial: $2.10/W-AC Provider Lassen Municipal Utility District Lassen Municipal Utility District (LMUD) is providing incentives for its customers to purchase solar electric photovoltaic (PV) systems. Rebate levels will decrease annually over the life of the program. Through June 30, 2014, rebates of $3.00 per watt-AC up to $5,000 are available for

487

Pacific Power - PV Rebate Program (California) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Pacific Power - PV Rebate Program (California) Pacific Power - PV Rebate Program (California) Pacific Power - PV Rebate Program (California) < Back Eligibility Agricultural Commercial Fed. Government Industrial Residential Schools State Government Savings Category Solar Buying & Making Electricity Maximum Rebate Commercial: $90,000 Tax-exempt Entities: $277,500 Program Info Start Date 07/01/2011 Expiration Date 07/1/2015 State California Program Type Utility Rebate Program Rebate Amount Incentives may be adjusted based on expected performance. Incentive amounts below are current as of 12/14/12. See program website for current status. Residential: $1.13/W CEC-AC Commercial: $0.36/W CEC-AC Tax-exempt Entities: $1.11/W CEC-AC Pacific Power is providing rebates to their customers who install photovoltaic (PV) systems on their homes and facilities. These rebates step

488

Merced Irrigation District - PV Buydown Program | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Merced Irrigation District - PV Buydown Program Merced Irrigation District - PV Buydown Program Merced Irrigation District - PV Buydown Program < Back Eligibility Commercial Nonprofit Residential Savings Category Solar Buying & Making Electricity Maximum Rebate Residential: 8,400 Commercial: $70,000 Program Info State California Program Type Utility Rebate Program Rebate Amount 2.80/W AC, adjusted based on expected performance Provider Merced Irrigation District Merced Irrigation District (MID) offers its residential, commercial and non-profit customers a rebate for installing solar electric photovoltaic (PV) systems on their homes and offices. The rebate is $2.80 per watt (adjusted based on the expected performance of the system) with a maximum of $8,400 for residential systems and $70,000 for non-residential systems.

489

Riverside Public Utilities - Non-Residential PV Incentive Program |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Non-Residential PV Incentive Program Non-Residential PV Incentive Program Riverside Public Utilities - Non-Residential PV Incentive Program < Back Eligibility Commercial Savings Category Solar Buying & Making Electricity Maximum Rebate Whichever is less: 50% of project cost or specific dollar limits which vary according to the rate schedule of the applicant Program Info State California Program Type Utility Rebate Program Rebate Amount Program is currently on hold. See below for more information. Provider Riverside Public Utilities '''''Note: Funding for this program has been exhausted for the remainder of the fiscal year. The program is scheduled to reopen on July 1, 2014.''''' The non-residential photovoltaic (PV) rebate program provides financial incentives for Riverside Public Utilities' business customers to install

490

Lodi Electric Utility - PV Rebate Program | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Lodi Electric Utility - PV Rebate Program Lodi Electric Utility - PV Rebate Program Lodi Electric Utility - PV Rebate Program < Back Eligibility Commercial Industrial Local Government Residential Savings Category Solar Buying & Making Electricity Maximum Rebate Residential: $7,000 Non-residential: $40,000 Program Info Expiration Date January 1, 2018 State California Program Type Utility Rebate Program Rebate Amount 2013 Program Year: $1.94/W AC Incentives will be adjusted based on expected performance Provider Customer Programs Lodi Electric Utility offers rebates to its residential, commercial, industrial and municipal customers who install photovoltaic (PV) systems. The rebate program is funded with approximately $6 million to support systems installed between January 1, 2008 and January 1, 2018. The total

491

Hercules Municipal Utility - PV Rebate Program | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hercules Municipal Utility - PV Rebate Program Hercules Municipal Utility - PV Rebate Program Hercules Municipal Utility - PV Rebate Program < Back Eligibility Commercial Residential Savings Category Solar Buying & Making Electricity Maximum Rebate Systems 10 kW or less: 10,000 Program Info State California Program Type Utility Rebate Program Rebate Amount '''2012:''' Systems up to 10 kW: 2.25/watt AC Systems larger than 10 kW: 0.17/kWh for 5 years'''''' Provider Hercules Municipal Utility '''''Note: This program has been temporarily suspended. Contact the utility for more information.''''' Hercules Municipal Utility offers a $2.25-per-watt AC rebate (2012 rebate level) to its residential and commercial customers who purchase and install solar photovoltaic (PV) systems smaller than 10 kilowatts (kW). Systems 10

492

SMUD - PV Residential Retrofit Buy-Down | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PV Residential Retrofit Buy-Down PV Residential Retrofit Buy-Down SMUD - PV Residential Retrofit Buy-Down < Back Eligibility Residential Savings Category Solar Buying & Making Electricity Maximum Rebate No maximum limit Program Info State California Program Type Utility Rebate Program Rebate Amount $0.20/watt AC. Incentive is adjusted based on expected performance. The incentive can be paid directly to the customer or to the installer. Provider Sacramento Municipal Utility District SMUD offers an incentive of $0.20 per watt (W) AC to residential customers who install grid-connected photovoltaic (PV) systems. Customers do not have to contract directly with SMUD-approved contractors for the purchase and installation of the system, however this is recommended. All systems must be permitted and installed by B, C-10, or C-46 contractors. The incentive

493

Blocking diodes and fuses in low-voltage PV systems  

DOE Green Energy (OSTI)

Instructions and labels supplied with listed PV modules and the requirements of the National Electrical Code (NEC) dictate that a series fuse shall be used to protect the module against backfeed currents. Few of the hundreds of thousands of low-voltage (12, 24, and 48-volt) stand-alone photovoltaic (PV) power systems use series fuses on each module or string of modules. Tests and simulations at the Southwest Technology Development Institute (TDI) and at Sandia National Laboratories (SNL) have established that the absence of these fuses can pose significant fire and safety hazards even on 12-volt PV systems. If the system has sufficient backfeed voltage and current, it is possible that a ground fault in the wiring or inside a module can result in the destruction of a PV module.

Wiles, J.C. [New Mexico State Univ., Las Cruces, NM (United States). Southwest Technology Development Inst.; King, D.L. [Sandia National Labs., Albuquerque, NM (United States). Photovoltaic Systems R and D

1997-11-01T23:59:59.000Z

494

Instrumentation for Evaluating PV System Performance Losses from Snow  

DOE Green Energy (OSTI)

When designing a photovoltaic (PV) system for northern climates, the prospective installation should be evaluated with respect to the potentially detrimental effects of snow preventing solar radiation from reaching the PV cells. The extent to which snow impacts performance is difficult to determine because snow events also increase the uncertainty of the solar radiation measurement, and the presence of snow needs to be distinguished from other events that can affect performance. This paper describes two instruments useful for evaluating PV system performance losses from the presence of snow: (1) a pyranometer with a heater to prevent buildup of ice and snow, and (2) a digital camera for remote retrieval of images to determine the presence of snow on the PV array.

Marion, B.; Rodriguez, J.; Pruett, J.

2009-01-01T23:59:59.000Z

495

Full Steam Ahead for PV in US Homes?  

Science Conference Proceedings (OSTI)

In October 2008, the United States Congress extended both the residential and commercial solar investment tax credits (ITCs) for an unprecedented eight years, lifted the $2,000 cap on the residential credit, removed the prohibition on utility use of the commercial credit, and eliminated restrictions on the use of both credits in conjunction with the Alternative Minimum Tax. These significant changes, which apply to systems placed in service on or after January 1, 2009, will increase the value of the solar credits for residential system owners in particular, and are likely--in conjunction with state, local, and utility rebate programs targeting solar--to spur significant growth in residential, commercial, and utility-scale photovoltaic (PV) installations in the years ahead. This article focuses specifically on the residential credit, describing three areas in which removal of the $2,000 cap on the residential ITC will have significant implications for PV rebate program administrators, PV system owners, and the PV industry.

Bolinger, Mark A; Barbose, Galen; Wiser, Ryan

2009-01-15T23:59:59.000Z

496

Plumas-Sierra REC - PV Rebate Program | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PV Rebate Program PV Rebate Program Plumas-Sierra REC - PV Rebate Program < Back Eligibility Agricultural Commercial Industrial Nonprofit Residential Savings Category Solar Buying & Making Electricity Maximum Rebate $6,000 for residential; $12,000 for small commercial, agricultural and non-profit applications; $20,000 for large commercial and industrial applications Program Info State California Program Type Utility Rebate Program Rebate Amount 2012 rebate level: $2.09/watt (AC) Incentives will be adjusted based on expected performance. Provider Plumas-Sierra REC Plumas-Sierra REC offers an incentive for its customers to install photovoltaic (PV) systems on homes and businesses. Rebates are available for qualifying systems between one kilowatt (kW) and 25 kW; the rebate amount is based on the installed capacity. The rebate level will decreases

497

PV Manufacturing R&D Project -- Trends in the U.S. PV Industry  

DOE Green Energy (OSTI)

To foster continued growth in the U.S. photovoltaic (PV) industry, the U.S. Department of Energy initiated the PV Manufacturing R&D (PVMR&D) Project--a partnership with U.S. PV industry participants to perform cost-shared manufacturing research and development. Throughout FY 2004, PVMR&D managed fourteen subcontracts across the industry. The impact of PVMR&D is quantified by reductions in direct module manufacturing costs, scale-up of existing PV production capacity, and accrual of cost savings to the public and industry. An analysis of public and industry investment shows that both recaptured funds by mid-1998 based on estimated manufacturing cost savings from PVMR&D participation. Since project inception, total PV manufacturing capacity has increased from 14 MW to 201 MW at the close of 2003, while direct manufacturing costs declined from $5.55/W to $2.49/W. These results demonstrate continued progress toward the overriding goals of the PVMR&D project.

Brown, K. E.; Mitchell, R. L.; Bower, W. I.; King, R.

2005-01-01T23:59:59.000Z

498

Radiometric instrumentation and measurements guide for photovoltaic performance testing  

DOE Green Energy (OSTI)

The Photovoltaic Module and Systems Performance and Engineering Project at the National Renewable Energy Laboratory performs indoor and outdoor standardization, testing, and monitoring of the performance of a wide range of photovoltaic (PV) energy conversion devices and systems. The PV Radiometric Measurements and Evaluation Team (PVSRME) within that project is responsible for measurement and characterization of natural and artificial optical radiation which stimulates the PV effect. The PV manufacturing and research and development community often approaches project members for technical information and guidance. A great area of interest is radiometric instrumentation, measurement techniques, and data analysis applied to understanding and improving PV cell, module, and system performance. At the Photovoltaic Radiometric Measurements Workshop conducted by the PVSRME team in July 1995, the need to communicate knowledge of solar and optical radiometric measurements and instrumentation, gained as a result of NREL`s long-term experiences, was identified as an activity that would promote improved measurement processes and measurement quality in the PV research and manufacturing community. The purpose of this document is to address the practical and engineering need to understand optical and solar radiometric instrument performance, selection, calibration, installation, and maintenance applicable to indoor and outdoor radiometric measurements for PV calibration, performance, and testing applications. An introductory section addresses radiometric concepts and definitions. Next, concepts essential to spectral radiometric measurements are discussed. Broadband radiometric instrumentation and measurement concepts are then discussed. Each type of measurement serves as an important component of the PV cell, module, and system performance measurement and characterization process.

Myers, D.

1997-04-01T23:59:59.000Z

499

Ultra Accelerated Testing of PV Module Components  

DOE Green Energy (OSTI)

Using concentrated natural sunlight at the NREL High Flux Solar Furnace, we have exposed several materials to acceleration factors of up to 400 times the normal outdoor UV exposure dose. This accelerated rate allows the exposure of materials such that a year of outdoor exposure can be simulated in about 5 hours. We have studied the solarization of cerium containing glass, the degradation of ethylene vinyl acetate laminated between borosilicate glass, and the yellowing of standard polystyrene test coupons. The first two candidates are of interest to the photovoltaics (PV) program, and the last candidate material is a widely used dosimeter for ultra violet (UV) exposure in accelerated weathering chambers

Pitts, J. R.; King, D. E.; Bingham, C.; Czanderna, A. W.

1998-10-28T23:59:59.000Z

500

New York Sun Competitive PV Program (New York) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Sun Competitive PV Program (New York) Sun Competitive PV Program (New York) New York Sun Competitive PV Program (New York) < Back Eligibility Agricultural Commercial Construction Fuel Distributor Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools Systems Integrator Tribal Government Utility Savings Category Solar Buying & Making Electricity Program Info State New York Program Type Renewables Portfolio Standards and Goals Provider New York State Energy Research and Development Authority The New York Sun Competitive Photovoltaic (PV) Program is an expansion of the Renewable Portfolio Standard (RPS) Customer-Sited Tier Regional Program