Sample records for renewable distributed generation

  1. Renewable Energy: Distributed Generation Policies and Programs...

    Broader source: Energy.gov (indexed) [DOE]

    Energy Policies & Programs Renewable Energy: Distributed Generation Policies and Programs Renewable Energy: Distributed Generation Policies and Programs Distributed generation...

  2. Smoothing the Eects of Renewable Generation on the Distribution Grid

    E-Print Network [OSTI]

    Naud, Paul S.

    2014-01-01T23:59:59.000Z

    to Grid by Paul Naud Renewable electrical power sourcessystem based on various renewable energy resources. InCRUZ Smoothing the Effects of Renewable Generation on the

  3. Distributed Generation and Renewable Energy in

    E-Print Network [OSTI]

    (Propane) Chugach EA Anchorage, AK Flint Energies Reynolds, GA Delaware County EC Delhi, NY (Propane) TVA Chattanooga, TN P ? P P? H ? F Baldwin EMC Summerdale, AL ? DoD CERL-Logan Yosemite, CA (Propane) P DoD CERL-Logan Cherry Point, NC (Propane) P 1st Rochdale CG New York, NY First Energy, OH A P #12;Co-op Renewables

  4. Operation and Control of Distribution Systems with high level integration of Renewable Generation units

    E-Print Network [OSTI]

    Bak-Jensen, Birgitte

    models Probabilistic methodologies are being applied to power system analysis since 70' [9] becauseOperation and Control of Distribution Systems with high level integration of Renewable Generation. Diagonal 649 Pavelló A, 08028 Barcelona, Spain Summary Traditional power systems have a hierarchical

  5. Smoothing the Eects of Renewable Generation on the Distribution Grid

    E-Print Network [OSTI]

    Naud, Paul S.

    2014-01-01T23:59:59.000Z

    Fortunately, inverter data from a customer with a PV systemsystem, in series with a PV array and ahead of the inverter,PV is fed into an inverter to feed energy into the distribution system.

  6. Enhancing the Smart Grid: Integrating Clean Distributed and Renewable...

    Energy Savers [EERE]

    Enhancing the Smart Grid: Integrating Clean Distributed and Renewable Generation Enhancing the Smart Grid: Integrating Clean Distributed and Renewable Generation Imagine a grid...

  7. Developing and Implementing the Foundation for a Renewable Energy-Based "Distribution Generation Micro-grid": A California Energy Commission Public Interest Energy Research Co-Funded Program 

    E-Print Network [OSTI]

    Lilly, P.; Sebold, F. D.; Carpenter, M.; Kitto, W.

    2002-01-01T23:59:59.000Z

    The California Energy Commission has been implementing its Public Interest Energy Research (PIER) and Renewable Energy Programs since early 1998. In the last two years, the demand for renewable distributed generation systems has increased rapidly...

  8. Renewable Electricity Generation (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-09-01T23:59:59.000Z

    This document highlights DOE's Office of Energy Efficiency and Renewable Energy's advancements in renewable electricity generation technologies including solar, water, wind, and geothermal.

  9. Distributional and Efficiency Impacts of Clean and Renewable Energy Standards

    E-Print Network [OSTI]

    supply and demand, including renewable energy resources and generating technologies, while representingDistributional and Efficiency Impacts of Clean and Renewable Energy Standards for Electricity on recycled paper #12;Distributional and Efficiency Impacts of Clean and Renewable Energy Standards

  10. Renewable energy generation sources

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Nuclear Security Administration under contract DE-AC04-94AL85000. SAND2014-4078P. Renewable Systems & Energy Infrastructure | Solar Programs Sandia mechanical technologist...

  11. Renewable energy generation sources

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Technical s o Freiberge s 3 c/)RenewableRenewableIndustrialenergy

  12. Figure 1. Nonhydroelectric renewable generation

    U.S. Energy Information Administration (EIA) Indexed Site

    1. Nonhydroelectric renewable generation" " (billion kilowatthours)" ,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020,2021,2022,2023,2024,2025,2026,2027,2028,...

  13. DISTRIBUTED GENERATION AND COGENERATION POLICY

    E-Print Network [OSTI]

    Director EFFICIENCY, RENEWABLES & DEMAND ANALYSIS DIVISION B.B. Blevins Executive Director DISCLAIMER capacity targets. KEYWORDS Distributed generation, cogeneration, photovoltaics, wind, biomass, combined

  14. Impact of Renewable Distributed Generation on Power Systems M. Begovi, A. Pregelj, A. Rohatgi D. Novosel

    E-Print Network [OSTI]

    , improve the voltage profile across the feeder, may reduce the loading level of branches and substation the effect of DG penetration on the actual load demand and voltage profile of the distribution feeder. However, DG systems inherently provide some benefits to the utility. They may level the load curve

  15. Renewable Energy Co-Location of Distribution Facilities (Virginia)

    Broader source: Energy.gov [DOE]

    This legislation applies to distribution facilities, which include poles and wires, cables, pipelines, or other underground conduits by which a renewable generator is able to (i) supply electricity...

  16. CONSULTANT REPORT DISTRIBUTED GENERATION

    E-Print Network [OSTI]

    an independent cost analysis to interconnect and integrate increased penetration levels of renewable distributed costs. The Energy Commission considers this study a first step toward the 2012 Integrated Energy Policy Generation Integration Cost Study: Analytical Framework. California Energy Commission. CEC2002013007. i

  17. Eastern Renewable Generation Integration Study (Presentation)

    SciTech Connect (OSTI)

    Bloom, A.

    2014-05-01T23:59:59.000Z

    This presentation provides a high-level overview of the Eastern Renewable Generation Integration Study process, scenarios, tools, and goals.

  18. Integration of Renewables Via Demand Management: Highly Dispatchable and Distributed Demand Response for the Integration of Distributed Generation

    SciTech Connect (OSTI)

    None

    2012-02-11T23:59:59.000Z

    GENI Project: AutoGrid, in conjunction with Lawrence Berkeley National Laboratory and Columbia University, will design and demonstrate automated control software that helps manage real-time demand for energy across the electric grid. Known as the Demand Response Optimization and Management System - Real-Time (DROMS-RT), the software will enable personalized price signal to be sent to millions of customers in extremely short timeframes—incentivizing them to alter their electricity use in response to grid conditions. This will help grid operators better manage unpredictable demand and supply fluctuations in short time-scales —making the power generation process more efficient and cost effective for both suppliers and consumers. DROMS-RT is expected to provide a 90% reduction in the cost of operating demand response and dynamic pricing Projects in the U.S.

  19. Renewable Electricity Generation in the United States

    E-Print Network [OSTI]

    Schmalensee, Richard

    This paper provides an overview of the use of renewable energy sources to generate electricity in the United States and a critical analysis of the federal and state policies that have supported the deployment of renewable ...

  20. Renewable Electricity Generation (Fact Sheet), Office of Energy...

    Energy Savers [EERE]

    Renewable Electricity Generation (Fact Sheet), Office of Energy Efficiency and Renewable Energy, U.S. Department of Energy (DOE) Renewable Electricity Generation (Fact Sheet),...

  1. Eastern Renewable Generation Integration Study (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-02-01T23:59:59.000Z

    This one-page, two-sided fact sheet provides an overview of the Eastern Renewable Generation and Integration Study process.

  2. Integration of Demand Side Management, Distributed Generation...

    Open Energy Info (EERE)

    integration of energy efficiency, distributed generation, renewable energy resources and energy storage technologies, both locally and globally, to maximize the value of the...

  3. Renewable Power Options for Electricity Generation on Kaua'i...

    Office of Environmental Management (EM)

    Renewable Power Options for Electricity Generation on Kaua'i: Economics and Performance Modeling Renewable Power Options for Electricity Generation on Kaua'i: Economics and...

  4. Renewable Energy Generation Zone Property Tax Abatement

    Broader source: Energy.gov [DOE]

    Local areas in Mimssouri can be designated as Renewable Energy Generation Zones and receive property tax abatements as part of the Enhanced Enterprise Zone program. Legislation (H.B. 737) enacted...

  5. A reliability assessment methodology for distribution systems with distributed generation

    E-Print Network [OSTI]

    Duttagupta, Suchismita Sujaya

    2006-08-16T23:59:59.000Z

    Reliability assessment is of primary importance in designing and planning distribution systems that operate in an economic manner with minimal interruption of customer loads. With the advances in renewable energy sources, Distributed Generation (DG...

  6. Distributed Generation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers SubfoldersU.S. RefiningDistributed EnergyUntapped

  7. Integrating Renewable Energy into the Transmission and Distribution...

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

    Integrating Renewable Energy into the Transmission and Distribution System of the U.S. Virgin Islands Integrating Renewable Energy into the Transmission and Distribution System of...

  8. Request for Information Renewable Energy Generation/Production...

    Open Energy Info (EERE)

    Request for Information Renewable Energy GenerationProduction Shreveport Airport Authority - Response Deadline 2 January 2014 Home > Groups > Renewable Energy RFPs Rosborne318's...

  9. Abatement of Air Pollution: Distributed Generators (Connecticut)

    Broader source: Energy.gov [DOE]

    For the purpose of these regulations, a distributed generator is defined as any equipment that converts primary fuel, including fossil fuel and renewable fuel, into electricity or electricity and...

  10. Distributed Reforming of Renewable Liquids via Water Splitting...

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

    Renewable Liquids via Water Splitting using Oxygen Transport Membrane (OTM) (Presentation) Distributed Reforming of Renewable Liquids via Water Splitting using Oxygen Transport...

  11. Optimal Integration of Renewable Energy Resources in Data Centers with Behind-the-Meter Renewable Generator

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    1 Optimal Integration of Renewable Energy Resources in Data Centers with Behind-the-Meter Renewable-- Renewable energy resources, such as wind and solar power, are rapidly becoming generation technologies-temporal variations, the integration of renewable energy resources is usually very challenging. Some of the previously

  12. City of San Marcos- Distributed Generation Rebate Program (Texas)

    Broader source: Energy.gov [DOE]

    The City of San Marcos offers a Distributed Generation Rebate Program for the installation of grid-tied renewable energy systems. The Distributed Generation Rebate Program is offered on a first...

  13. Renewable Generation and Interconnection to the Electrical Grid...

    Broader source: Energy.gov (indexed) [DOE]

    Generation and Interconnection to the Electrical Grid in Southern California Renewable Generation and Interconnection to the Electrical Grid in Southern California Presentation...

  14. Renewable Electricity Generation and Delivery at the Sacramento...

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

    Electricity Generation and Delivery at the Sacramento Municipal Utility District Renewable Electricity Generation and Delivery at the Sacramento Municipal Utility District Dairy...

  15. BATTERY STORAGE CONTROL FOR STEADYING RENEWABLE POWER GENERATION

    E-Print Network [OSTI]

    pro- duction to come from renewable resources. In the 2011 State of the Union Address, President ObamaBATTERY STORAGE CONTROL FOR STEADYING RENEWABLE POWER GENERATION By Shengyuan (Mike) Chen, Emilie-626-7370 URL: http://www.ima.umn.edu #12;Battery Storage Control for Steadying Renewable Power Generation

  16. Holy Cross Energy- WE CARE Renewable Energy Generation Rebate Program

    Broader source: Energy.gov [DOE]

    Holy Cross Energy's WE CARE (With Efficiency, Conservation And Renewable Energy) Program offers a $1.50-per-watt DC incentive for renewable energy generation using wind, hydroelectric, photovoltaic...

  17. Message passing for integrating and assessing renewable generation in a redundant power grid

    SciTech Connect (OSTI)

    Zdeborova, Lenka [Los Alamos National Laboratory; Backhaus, Scott [Los Alamos National Laboratory; Chertkov, Michael [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    A simplified model of a redundant power grid is used to study integration of fluctuating renewable generation. The grid consists of large number of generator and consumer nodes. The net power consumption is determined by the difference between the gross consumption and the level of renewable generation. The gross consumption is drawn from a narrow distribution representing the predictability of aggregated loads, and we consider two different distributions representing wind and solar resources. Each generator is connected to D consumers, and redundancy is built in by connecting R {le} D of these consumers to other generators. The lines are switchable so that at any instance each consumer is connected to a single generator. We explore the capacity of the renewable generation by determining the level of 'firm' generation capacity that can be displaced for different levels of redundancy R. We also develop message-passing control algorithm for finding switch sellings where no generator is overloaded.

  18. Renewable Energy for Electricity Generation in Latin America...

    Open Energy Info (EERE)

    and Outlook (Webinar) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Renewable Energy for Electricity Generation in Latin America: Market, Technologies, and...

  19. Quantifying avoided emissions from renewable generation

    E-Print Network [OSTI]

    Gomez, Gabriel R. (Gabriel Rodriguez)

    2009-01-01T23:59:59.000Z

    Quantifying the reduced emissions due to renewable power integration and providing increasingly accurate emissions analysis has become more important for policy makers in the age of renewable portfolio standards (RPS) and ...

  20. Sandia National Laboratories: renewable energy power generation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Security, Microgrid, Modeling & Analysis, News, News & Events, Partnership, Renewable Energy, SMART Grid, Systems Analysis, Systems Engineering Mayor Says New System...

  1. Eastern Renewable Generation Integration Study: Initial Results (Poster)

    SciTech Connect (OSTI)

    Bloom, A.; Townsend, A.; Hummon, M.; Weekley, A.; Clark, K.; King, J.

    2013-10-01T23:59:59.000Z

    This poster presents an overview of the Eastern Renewable Generation Integration Study, which aims to answer critical questions about the future of the Eastern Interconnection under high levels of solar and wind generation penetration.

  2. Insertion of Distributed Generation into Rural Feeders , R. MORENO+

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    -generating technologies with new technologies that pollute less. Therefore, the use of renewable energies in the worldwide of renewable energy distributed generators (DG) to radial feeders is assessed. Often, the long distance between, however, are not usually designed to receive energy at the consumer end. This problem intensifies

  3. Renewable and Distributed Power in California Simplifying the...

    Open Energy Info (EERE)

    - Making the Path for Future Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Renewable and Distributed Power in California Simplifying the Regulatory...

  4. Bidding strategies for renewable energy generation with non stationary statistics

    E-Print Network [OSTI]

    Giannitrapani, Antonello

    Bidding strategies for renewable energy generation with non stationary statistics A. Giannitrapani strategies to offer the maximum amount of energy while avoiding imbalance costs. Optimal bidding strategies to the integration of renewable energy sources into the electricity grid. This paper studies the problem

  5. Eastern Renewable Generation Integration Study Solar Dataset (Presentation)

    SciTech Connect (OSTI)

    Hummon, M.

    2014-04-01T23:59:59.000Z

    The National Renewable Energy Laboratory produced solar power production data for the Eastern Renewable Generation Integration Study (ERGIS) including "real time" 5-minute interval data, "four hour ahead forecast" 60-minute interval data, and "day-ahead forecast" 60-minute interval data for the year 2006. This presentation provides a brief overview of the three solar power datasets.

  6. Renewable Electricity Futures Study. Volume 2: Renewable Electricity Generation and Storage Technologies

    SciTech Connect (OSTI)

    Augustine, C.; Bain, R.; Chapman, J.; Denholm, P.; Drury, E.; Hall, D.G.; Lantz, E.; Margolis, R.; Thresher, R.; Sandor, D.; Bishop, N.A.; Brown, S.R.; Cada, G.F.; Felker, F.

    2012-06-01T23:59:59.000Z

    The Renewable Electricity Futures (RE Futures) Study investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. The analysis focused on the sufficiency of the geographically diverse U.S. renewable resources to meet electricity demand over future decades, the hourly operational characteristics of the U.S. grid with high levels of variable wind and solar generation, and the potential implications of deploying high levels of renewables in the future. RE Futures focused on technical aspects of high penetration of renewable electricity; it did not focus on how to achieve such a future through policy or other measures. Given the inherent uncertainties involved with analyzing alternative long-term energy futures as well as the multiple pathways that might be taken to achieve higher levels of renewable electricity supply, RE Futures explored a range of scenarios to investigate and compare the impacts of renewable electricity penetration levels (30%-90%), future technology performance improvements, potential constraints to renewable electricity development, and future electricity demand growth assumptions. RE Futures was led by the National Renewable Energy Laboratory (NREL) and the Massachusetts Institute of Technology (MIT).

  7. Abstract--This paper proposes a distributed generator (DG) placement methodology based on newly defined term reactive

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    . Index Terms--Distributed generator (DG), reactive power loadability, solar, voltage regulation, wind generator. I. INTRODUCTION istributed generation based on renewable energy sources offers a promising

  8. NASA/FPL Renewable Project Case Study: Space Coast Next Generation...

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

    NASAFPL Renewable Project Case Study: Space Coast Next Generation Solar Energy Center NASAFPL Renewable Project Case Study: Space Coast Next Generation Solar Energy Center...

  9. Evaluating Policies to Increase Electricity Generation from Renewable Energy

    E-Print Network [OSTI]

    Schmalensee, Richard

    Building on a review of experience in the United States and the European Union, this article advances four main propositions concerning policies aimed at increasing electricity generation from renewable energy. First, who ...

  10. GASIFICATION FOR DISTRIBUTED GENERATION

    SciTech Connect (OSTI)

    Ronald C. Timpe; Michael D. Mann; Darren D. Schmidt

    2000-05-01T23:59:59.000Z

    A recent emphasis in gasification technology development has been directed toward reduced-scale gasifier systems for distributed generation at remote sites. The domestic distributed power generation market over the next decade is expected to be 5-6 gigawatts per year. The global increase is expected at 20 gigawatts over the next decade. The economics of gasification for distributed power generation are significantly improved when fuel transport is minimized. Until recently, gasification technology has been synonymous with coal conversion. Presently, however, interest centers on providing clean-burning fuel to remote sites that are not necessarily near coal supplies but have sufficient alternative carbonaceous material to feed a small gasifier. Gasifiers up to 50 MW are of current interest, with emphasis on those of 5-MW generating capacity. Internal combustion engines offer a more robust system for utilizing the fuel gas, while fuel cells and microturbines offer higher electric conversion efficiencies. The initial focus of this multiyear effort was on internal combustion engines and microturbines as more realistic near-term options for distributed generation. In this project, we studied emerging gasification technologies that can provide gas from regionally available feedstock as fuel to power generators under 30 MW in a distributed generation setting. Larger-scale gasification, primarily coal-fed, has been used commercially for more than 50 years to produce clean synthesis gas for the refining, chemical, and power industries. Commercial-scale gasification activities are under way at 113 sites in 22 countries in North and South America, Europe, Asia, Africa, and Australia, according to the Gasification Technologies Council. Gasification studies were carried out on alfalfa, black liquor (a high-sodium waste from the pulp industry), cow manure, and willow on the laboratory scale and on alfalfa, black liquor, and willow on the bench scale. Initial parametric tests evaluated through reactivity and product composition were carried out on thermogravimetric analysis (TGA) equipment. These tests were evaluated and then followed by bench-scale studies at 1123 K using an integrated bench-scale fluidized-bed gasifier (IBG) which can be operated in the semicontinuous batch mode. Products from tests were solid (ash), liquid (tar), and gas. Tar was separated on an open chromatographic column. Analysis of the gas product was carried out using on-line Fourier transform infrared spectroscopy (FT-IR). For selected tests, gas was collected periodically and analyzed using a refinery gas analyzer GC (gas chromatograph). The solid product was not extensively analyzed. This report is a part of a search into emerging gasification technologies that can provide power under 30 MW in a distributed generation setting. Larger-scale gasification has been used commercially for more than 50 years to produce clean synthesis gas for the refining, chemical, and power industries, and it is probable that scaled-down applications for use in remote areas will become viable. The appendix to this report contains a list, description, and sources of currently available gasification technologies that could be or are being commercially applied for distributed generation. This list was gathered from current sources and provides information about the supplier, the relative size range, and the status of the technology.

  11. Supplementary Information Potential for Electricity Generation from Renewable Resources and Levelized Cost of Electricity (LCOE)

    E-Print Network [OSTI]

    Suo, Zhigang

    Supplementary Information Potential for Electricity Generation from Renewable Resources and Levelized Cost of Electricity (LCOE) Electrical energy can be generated from renewable resources the annual potential and actual annual production of electrical energy from renewable energy resources. Only

  12. NREL: Transmission Grid Integration - Eastern Renewable Generation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for Renewable Energy: Grid IntegrationReport Available forVoucherPossibleNewData

  13. Native American Technical Assistance and Training for Renewable Energy Resource Development and Electrical Generation Facilities Management

    SciTech Connect (OSTI)

    A. David Lester

    2008-10-17T23:59:59.000Z

    The Council of Energy Resource Tribes (CERT) will facilitate technical expertise and training of Native Americans in renewable energy resource development for electrical generation facilities, and distributed generation options contributing to feasibility studies, strategic planning and visioning. CERT will also provide information to Tribes on energy efficiency and energy management techniques.This project will provide facilitation and coordination of expertise from government agencies and private industries to interact with Native Americans in ways that will result in renewable energy resource development, energy efficiency program development, and electrical generation facilities management by Tribal entities. The intent of this cooperative agreement is to help build capacity within the Tribes to manage these important resources.

  14. Renewable Generation Requirement | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010InJanuaryGeothermalRenewable Energy andErinRetail

  15. Renewable Generation Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation, searchRayreviewAl.,RenGenAmes,RenewableRFL JumpInc

  16. Demonstration of Security Benefits of Renewable Generation at FE Warren Air Force Base

    SciTech Connect (OSTI)

    Warwick, William M.; Myers, Kurt; Seifert, Gary

    2010-12-31T23:59:59.000Z

    Report detailing field demonstration of security benefits of renewable generation at FE Warren Air Force Base.

  17. Distributed-scale Renewable Energy Projects (Smaller than 10...

    Broader source: Energy.gov (indexed) [DOE]

    Most Federal distributed-scale renewable energy projects (smaller than 10 MWs) can be broken down into nine steps. The first two fall within the planning phase, while the remaining...

  18. Tax Credits and Renewable Generation (released in AEO2009)

    Reports and Publications (EIA)

    2009-01-01T23:59:59.000Z

    Tax incentives have been an important factor in the growth of renewable generation over the past decade, and they could continue to be important in the future. The Energy Tax Act of 1978 (Public Law 95-618) established ITCs for wind, and EPACT92 established the Renewable Electricity Production Credit (more commonly called the PTC) as an incentive to promote certain kinds of renewable generation beyond wind on the basis of production levels. Specifically, the PTC provided an inflation-adjusted tax credit of 1.5 cents per kilowatthour for generation sold from qualifying facilities during the first 10 years of operation. The credit was available initially to wind plants and facilities that used closed-loop biomass fuels and were placed in service after passage of the Act and before June 1999.

  19. Predicting the Power Output of Distributed Renewable Energy Resources within a Broad Geographical Region

    E-Print Network [OSTI]

    Chalkiadakis, Georgios

    Predicting the Power Output of Distributed Renewable Energy Resources within a Broad Geographical potentially dis- tributed renewable energy resources (su years, estimating the power output of in- herently intermittent and potentially distributed renewable

  20. Modeling Operational Constraints imposed by Renewable Generation

    E-Print Network [OSTI]

    Daniels, Thomas E.

    4 #12;Operational effects into NETPLAN G LX L T R 5 #12;Effect of Wind on Load Following 10 min, that include: Regulation, Intra-hour and inter-hour load following, Contingency reserves, Generation cycling

  1. Renewable Electricity Generation Success Stories | Department...

    Broader source: Energy.gov (indexed) [DOE]

    Read more water success stories Wind February 18, 2015 Mapping the Frontier of New Wind Power Potential June 17, 2014 Enhanced Efficiency of Wind-Diesel Power Generation in...

  2. Role of Energy Storage with Renewable Electricity Generation

    SciTech Connect (OSTI)

    Denholm, P.; Ela, E.; Kirby, B.; Milligan, M.

    2010-01-01T23:59:59.000Z

    Renewable energy sources, such as wind and solar, have vast potential to reduce dependence on fossil fuels and greenhouse gas emissions in the electric sector. Climate change concerns, state initiatives including renewable portfolio standards, and consumer efforts are resulting in increased deployments of both technologies. Both solar photovoltaics (PV) and wind energy have variable and uncertain (sometimes referred to as intermittent) output, which are unlike the dispatchable sources used for the majority of electricity generation in the United States. The variability of these sources has led to concerns regarding the reliability of an electric grid that derives a large fraction of its energy from these sources as well as the cost of reliably integrating large amounts of variable generation into the electric grid. In this report, we explore the role of energy storage in the electricity grid, focusing on the effects of large-scale deployment of variable renewable sources (primarily wind and solar energy).

  3. COMMISSION REPORT DEVELOPING RENEWABLE

    E-Print Network [OSTI]

    , state properties, photovoltaic, wind, biomass, geothermal, small hydro, storage, distributed renewable distributed generation ­ onsite or small energy systems located close to where

  4. Integrated High Speed Intelligent Utility Tie Unit for Disbursed/Renewable Generation Facilities Worakarn Wongsaichua, Wei-Jen Lee Soontorn Oraintara Chiman Kwan Frank Zhang

    E-Print Network [OSTI]

    Oraintara, Soontorn

    Integrated High Speed Intelligent Utility Tie Unit for Disbursed/Renewable Generation Facilities is to rejuvenate the idea of integrated resource planning and promote the distributed generation via traditional or renewable generation facilities for the deregulated utility systems. Fuel cell and photovoltaic are the most

  5. Renewable and Distributed Systems Integration Peer Review

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010InJanuaryGeothermalRenewableSolar ThermalAn RPS is4

  6. Integrating Renewable Energy into the Transmission and Distribution...

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

    generation DOE U.S. Department of Energy DPR Dynamic Power Resource DS distributed storage DSM demand side management D-SMES distributed superconducting magnetic energy...

  7. The integration of renewable energy sources into electric power distribution systems. Volume 1: National assessment

    SciTech Connect (OSTI)

    Barnes, P.R.; Van Dyke, J.W. [Oak Ridge National Lab., TN (United States); Tesche, F.M. [6714 Norway Road, Dallas, TX (United States); Zaininger, H.W. [Zaininger Engineering Co., San Jose, CA (United States)

    1994-06-01T23:59:59.000Z

    Renewable energy technologies such as photovoltaic, solar thermal electricity, and wind turbine power are environmentally beneficial sources of electric power generation. The integration of renewable energy sources into electric power distribution systems can provide additional economic benefits because of a reduction in the losses associated with transmission and distribution lines. Benefits associated with the deferment of transmission and distribution investment may also be possible for cases where there is a high correlation between peak circuit load and renewable energy electric generation, such as photovoltaic systems in the Southwest. Case studies were conducted with actual power distribution system data for seven electric utilities with the participation of those utilities. Integrating renewable energy systems into electric power distribution systems increased the value of the benefits by about 20 to 55% above central station benefits in the national regional assessment. In the case studies presented in Vol. II, the range was larger: from a few percent to near 80% for a case where costly investments were deferred. In general, additional savings of at least 10 to 20% can be expected by integrating at the distribution level. Wind energy systems were found to be economical in good wind resource regions, whereas photovoltaic systems costs are presently a factor of 2.5 too expensive under the most favorable conditions.

  8. Sandia National Laboratories: renewable energy and distributed...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SMART Grid, Solar Sandia National Laboratories, the Electric Power Research Institute (EPRI) and European Distributed Energies Research Laboratories (DERlab) have organized a...

  9. Distributed Generation Operational Reliability, Executive Summary...

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

    2004 This report summarizes the results of the project, "Distributed Generation Market Transformation Tools: Distributed Generation Reliability and Availability Database,"...

  10. The integration of renewable energy sources into electric power distribution systems. Volume 2, Utility case assessments

    SciTech Connect (OSTI)

    Zaininger, H.W.; Ellis, P.R.; Schaefer, J.C. [Zaininger Engineering Co., San Jose, CA (United States)

    1994-06-01T23:59:59.000Z

    Electric utility distribution system impacts associated with the integration of renewable energy sources such as photovoltaics (PV) and wind turbines (WT) are considered in this project. The impacts are expected to vary from site to site according to the following characteristics: (1) The local solar insolation and/or wind characteristics; (2) renewable energy source penetration level; (3) whether battery or other energy storage systems are applied; and (4) local utility distribution design standards and planning practices. Small, distributed renewable energy sources are connected to the utility distribution system like other, similar kW- and MW-scale equipment and loads. Residential applications are expected to be connected to single-phase 120/240-V secondaries. Larger kw-scale applications may be connected to three-phase secondaries, and larger hundred-kW and MW-scale applications, such as MW-scale windfarms or PV plants, may be connected to electric utility primary systems via customer-owned primary and secondary collection systems. Small, distributed renewable energy sources installed on utility distribution systems will also produce nonsite-specific utility generation system benefits such as energy and capacity displacement benefits, in addition to the local site-specific distribution system benefits. Although generation system benefits are not site-specific, they are utility-specific, and they vary significantly among utilities in different regions. In addition, transmission system benefits, environmental benefits and other benefits may apply. These benefits also vary significantly among utilities and regions. Seven utility case studies considering PV, WT, and battery storage were conducted to identify a range of potential renewable energy source distribution system applications.

  11. Integrating Renewable Energy into the Transmission and Distribution System of the U. S. Virgin Islands

    SciTech Connect (OSTI)

    Burman, K.; Olis, D.; Gevorgian, V.; Warren, A.; Butt, R.; Lilienthal, P.; Glassmire, J.

    2011-09-01T23:59:59.000Z

    This report focuses on the economic and technical feasibility of integrating renewable energy technologies into the U.S. Virgin Islands transmission and distribution systems. The report includes three main areas of analysis: 1) the economics of deploying utility-scale renewable energy technologies on St. Thomas/St. John and St. Croix; 2) potential sites for installing roof- and ground-mount PV systems and wind turbines and the impact renewable generation will have on the electrical subtransmission and distribution infrastructure, and 3) the feasibility of a 100- to 200-megawatt power interconnection of the Puerto Rico Electric Power Authority (PREPA), Virgin Islands Water and Power Authority (WAPA), and British Virgin Islands (BVI) grids via a submarine cable system.

  12. Integrated, Automated Distributed Generation Technologies Demonstration

    SciTech Connect (OSTI)

    Jensen, Kevin

    2014-09-30T23:59:59.000Z

    The purpose of the NETL Project was to develop a diverse combination of distributed renewable generation technologies and controls and demonstrate how the renewable generation could help manage substation peak demand at the ATK Promontory plant site. The Promontory plant site is located in the northwestern Utah desert approximately 25 miles west of Brigham City, Utah. The plant encompasses 20,000 acres and has over 500 buildings. The ATK Promontory plant primarily manufactures solid propellant rocket motors for both commercial and government launch systems. The original project objectives focused on distributed generation; a 100 kW (kilowatt) wind turbine, a 100 kW new technology waste heat generation unit, a 500 kW energy storage system, and an intelligent system-wide automation system to monitor and control the renewable energy devices then release the stored energy during the peak demand time. The original goal was to reduce peak demand from the electrical utility company, Rocky Mountain Power (RMP), by 3.4%. For a period of time we also sought to integrate our energy storage requirements with a flywheel storage system (500 kW) proposed for the Promontory/RMP Substation. Ultimately the flywheel storage system could not meet our project timetable, so the storage requirement was switched to a battery storage system (300 kW.) A secondary objective was to design/install a bi-directional customer/utility gateway application for real-time visibility and communications between RMP, and ATK. This objective was not achieved because of technical issues with RMP, ATK Information Technology Department’s stringent requirements based on being a rocket motor manufacturing facility, and budget constraints. Of the original objectives, the following were achieved: • Installation of a 100 kW wind turbine. • Installation of a 300 kW battery storage system. • Integrated control system installed to offset electrical demand by releasing stored energy from renewable sources during peak hours of the day. Control system also monitors the wind turbine and battery storage system health, power output, and issues critical alarms. Of the original objectives, the following were not achieved: • 100 kW new technology waste heat generation unit. • Bi-directional customer/utility gateway for real time visibility and communications between RMP and ATK. • 3.4% reduction in peak demand. 1.7% reduction in peak demand was realized instead.

  13. Generation and transmission expansion planning for renewable energy integration

    SciTech Connect (OSTI)

    Bent, Russell W [Los Alamos National Laboratory; Berscheid, Alan [Los Alamos National Laboratory; Toole, G. Loren [Los Alamos National Laboratory

    2010-11-30T23:59:59.000Z

    In recent years the expansion planning problem has become increasingly complex. As expansion planning (sometimes called composite or integrated resource planning) is a non-linear and non-convex optimization problem, researchers have traditionally focused on approximate models of power flows to solve the problem. The problem has also been split into generation expansion planning (GEP) and transmission network expansion planning (TNEP) to improve computational tractability. Until recently these approximations have produced results that are straight-forward to combine and adapt to the more complex and complete problem. However, the power grid is evolving towards a state where the adaptations are no longer easy (e.g. large amounts of limited control, renewable generation, comparable generation and transmission construction costs) and necessitates new approaches. Recent work on deterministic Discrepancy Bounded Local Search (DBLS) has shown it to be quite effective in addressing the TNEP. In this paper, we propose a generalization of DBLS to handle simultaneous generation and transmission planning.

  14. Energy Efficiency, Renewables, Advanced Transmission and Distribution

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube|6721 Federal RegisterHydrogenDistribution Technologies Issued: July 29, 2009

  15. Renewable generation and storage project industry and laboratory recommendations

    SciTech Connect (OSTI)

    Clark, N.H.; Butler, P.C.; Cameron, C.P.

    1998-03-01T23:59:59.000Z

    The US Department of Energy Office of Utility Technologies is planning a series of related projects that will seek to improve the integration of renewable energy generation with energy storage in modular systems. The Energy Storage Systems Program and the Photovoltaics Program at Sandia National Laboratories conducted meetings to solicit industry guidance and to create a set of recommendations for the proposed projects. Five possible projects were identified and a three pronged approach was recommended. The recommended approach includes preparing a storage technology handbook, analyzing data from currently fielded systems, and defining future user needs and application requirements.

  16. Public Art Generates Renewable Energy Beautifully | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag Jump to:ID8/OrganizationTechProbSolutionsPublic Art Generates Renewable Energy

  17. The value of schedule update frequency on distributed energy storage performance in renewable energy

    E-Print Network [OSTI]

    Boyer, Edmond

    The value of schedule update frequency on distributed energy storage performance in renewable of Distributed Energy Storage devices for Renewable Energy integration. The primary objective is to describe scheduling on the storage performance in renewable energy integration. Optimal schedules of Distributed

  18. Distributed Reforming of Renewable Liquids via Water Splitting using

    E-Print Network [OSTI]

    circuitry/power supply Non-galvanic Single material (no electrodes) Ethanol/NG Steam O2- 1/2 O2 + 2e- 1/2 O.C2H5OH + 1/2 O2 2CO + 3H2 Predominant products of ethanol reforming: H2, CO, CO2, CH4, H2O #12Distributed Reforming of Renewable Liquids via Water Splitting using Oxygen Transport Membrane (OTM

  19. Cascade Failures from Distributed Generation in Power Grids

    E-Print Network [OSTI]

    Scala, Antonio; Scoglio, Caterina

    2012-01-01T23:59:59.000Z

    Power grids are nowadays experiencing a transformation due to the introduction of Distributed Generation based on Renewable Sources. At difference with classical Distributed Generation, where local power sources mitigate anomalous user consumption peaks, Renewable Sources introduce in the grid intrinsically erratic power inputs. By introducing a simple schematic (but realistic) model for power grids with stochastic distributed generation, we study the effects of erratic sources on the robustness of several IEEE power grid test networks with up to 2000 buses. We find that increasing the penetration of erratic sources causes the grid to fail with a sharp transition. We compare such results with the case of failures caused by the natural increasing power demand.

  20. A reliability assessment methodology for distribution systems with distributed generation 

    E-Print Network [OSTI]

    Duttagupta, Suchismita Sujaya

    2006-08-16T23:59:59.000Z

    Reliability assessment is of primary importance in designing and planning distribution systems that operate in an economic manner with minimal interruption of customer loads. With the advances in renewable energy sources, ...

  1. NASA/FPL Renewable Project Case Study: Space Coast Next Generation...

    Broader source: Energy.gov (indexed) [DOE]

    NASAFPL Renewable Project: Space Coast Next Generation Solar Energy Center Biloxi, MS - FUPWG April 5-6. 2009 Gene Beck Corporate Manager, Governmental Accounts Mark Hillman...

  2. Converting Limbo Lands to Energy-Generating Stations: Renewable Energy Technologies on Underused, Formerly Contaminated Sites

    SciTech Connect (OSTI)

    Mosey, G.; Heimiller, D.; Dahle, D.; Vimmerstedt, L.; Brady-Sabeff, L.

    2007-10-01T23:59:59.000Z

    This report addresses the potential for using 'Limbo Lands' (underused, formerly contaminated sites, landfills, brownfields, abandoned mine lands, etc. ) as sites for renewable energy generating stations.

  3. FEMP Offers Training on Distributed-Scale Renewable Energy Projects...

    Energy Savers [EERE]

    be able to: Plan facility renewable energy projects using available screening tools for renewable energy resources, savings to investment ratio analysis, and feasibility studies...

  4. Distributed generation and demand side management : applications to transmission system operation 

    E-Print Network [OSTI]

    Hayes, Barry Patrick

    2013-07-01T23:59:59.000Z

    Electricity networks are undergoing a period of rapid change and transformation, with increased penetration levels of renewable-based distributed generation, and new influences on electricity end-use patterns from ...

  5. Software Based Barriers To Integration Of Renewables To The Future Distribution Grid

    SciTech Connect (OSTI)

    Stewart, Emma; Kiliccote, Sila

    2014-06-01T23:59:59.000Z

    The future distribution grid has complex analysis needs, which may not be met with the existing processes and tools. In addition there is a growing number of measured and grid model data sources becoming available. For these sources to be useful they must be accurate, and interpreted correctly. Data accuracy is a key barrier to the growth of the future distribution grid. A key goal for California, and the United States, is increasing the renewable penetration on the distribution grid. To increase this penetration measured and modeled representations of generation must be accurate and validated, giving distribution planners and operators confidence in their performance. This study will review the current state of these software and modeling barriers and opportunities for the future distribution grid.

  6. Dynamic equivalencing of distribution network with embedded generation 

    E-Print Network [OSTI]

    Feng, Xiaodan Selina

    2012-06-25T23:59:59.000Z

    Renewable energy generation will play an important role in solving the climate change problem. With renewable electricity generation increasing, there will be some significant changes in electric power systems, ...

  7. Risk implications of the deployment of renewables for investments in electricity generation

    E-Print Network [OSTI]

    Sisternes, Fernando J. de (Fernando José de Sisternes Jiménez)

    2014-01-01T23:59:59.000Z

    This thesis explores the potential risk implications that a large penetration of intermittent renewable electricity generation -such as wind and solar power- may have on the future electricity generation technology mix, ...

  8. Complete Automation of Future Grid for Optimal Real-Time Distribution of Renewables

    E-Print Network [OSTI]

    Loudon, Catherine

    integrates tie-set graph theory with an intelligent agent system, is presented to distribute renewable energy]-[3]. The renewable energy resource applications will offset dependence of fossil fuels, and provide green power options for atmospheric emissions curtailment. However, harvesting renewable energies may be unstable due

  9. Variable Renewable Generation Impact on Operating Reserves (Presentation)

    SciTech Connect (OSTI)

    Milligan, M.

    2011-05-01T23:59:59.000Z

    This presentation describes some of NREL's latest research on grid integration of renewables, and also describes some of the tools used for these analyses.

  10. Impact of Dynamic PHEVs Load on Renewable Sources based Distribution System

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Impact of Dynamic PHEVs Load on Renewable Sources based Distribution System F. R. Islam, H. R. Pota.Roy@student.adfa.edu.au Abstract--In this paper, charging effect of dynamic Plug in Hybrid Electric Vehicle (PHEV) is presented in a renewable energy based electricity distribution system. For planning and designing a distribution system

  11. Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation

    E-Print Network [OSTI]

    Eto, Joseph H.

    2011-01-01T23:59:59.000Z

    of Variable Renewable Generation The report is accompaniedit Relates to Wind-Powered Generation. LBNL-XXXX. Berkeley:with Increased Wind Generation. LBNL-XXXX. Berkeley:

  12. NREL: Technology Deployment - Distributed Generation Interconnection...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Distributed Generation Interconnection Collaborative Become a Member DGIC members are included in quarterly informational meetings and discussions related to distributed PV...

  13. Renewable Power Options for Electricity Generation on Kauai...

    Energy Savers [EERE]

    this demand growth, however they are not modeled in HOMER. 2.6 Renewable Energy Model Development PV Size and Energy Storage Assumptions The cost of PV varies widely across the...

  14. ReRack: Power Simulation for Data Centers with Renewable Energy Generation

    E-Print Network [OSTI]

    Renau, Jose

    ReRack: Power Simulation for Data Centers with Renewable Energy Generation Michael Brown and Jose://masc.cse.ucsc.edu ABSTRACT Data centers operating cost are dominated by their power consump- tion. Renewable energy sources factors, but the model should be extensive to consider other factors like power gating support. This paper

  15. Evaluating shortfalls in mixed-integer programming approaches for the optimal design and dispatch of distributed generation systems

    E-Print Network [OSTI]

    heat and power Fuel cells Building energy a b s t r a c t The distributed generation (DG) of combined Wisconsin, retrofitted with solid-oxide fuel cells (SOFCs) and a hot water storage tank. The simpler model of renewable or non- renewable sources of power generation (e.g., photovoltaic (PV) cells, fuel cells

  16. Local control of reactive power by distributed photovoltaic generators

    SciTech Connect (OSTI)

    Chertkov, Michael [Los Alamos National Laboratory; Turitsyn, Konstantin [Los Alamos National Laboratory; Sulc, Petr [Los Alamos National Laboratory; Backhaus, Scott [Los Alamos National Laboratory

    2010-01-01T23:59:59.000Z

    High penetration levels of distributed photovoltaic (PV) generation on an electrical distribution circuit may severely degrade power quality due to voltage sags and swells caused by rapidly varying PV generation during cloud transients coupled with the slow response of existing utility compensation and regulation equipment. Although not permitted under current standards for interconnection of distributed generation, fast-reacting, VAR-capable PV inverters may provide the necessary reactive power injection or consumption to maintain voltage regulation under difficult transient conditions. As side benefit, the control of reactive power injection at each PV inverter provides an opportunity and a new tool for distribution utilities to optimize the performance of distribution circuits, e.g. by minimizing thermal losses. We suggest a local control scheme that dispatches reactive power from each PV inverter based on local instantaneous measurements of the real and reactive components of the consumed power and the real power generated by the PVs. Using one adjustable parameter per circuit, we balance the requirements on power quality and desire to minimize thermal losses. Numerical analysis of two exemplary systems, with comparable total PV generation albeit a different spatial distribution, show how to adjust the optimization parameter depending on the goal. Overall, this local scheme shows excellent performance; it's capable of guaranteeing acceptable power quality and achieving significant saving in thermal losses in various situations even when the renewable generation in excess of the circuit own load, i.e. feeding power back to the higher-level system.

  17. ANALYSIS OF DISTRIBUTION FEEDER LOSSES DUE TO ADDITION OF DISTRIBUTED PHOTOVOLTAIC GENERATORS

    SciTech Connect (OSTI)

    Tuffner, Francis K.; Singh, Ruchi

    2011-08-09T23:59:59.000Z

    Distributed generators (DG) are small scale power supplying sources owned by customers or utilities and scattered throughout the power system distribution network. Distributed generation can be both renewable and non-renewable. Addition of distributed generation is primarily to increase feeder capacity and to provide peak load reduction. However, this addition comes with several impacts on the distribution feeder. Several studies have shown that addition of DG leads to reduction of feeder loss. However, most of these studies have considered lumped load and distributed load models to analyze the effects on system losses, where the dynamic variation of load due to seasonal changes is ignored. It is very important for utilities to minimize the losses under all scenarios to decrease revenue losses, promote efficient asset utilization, and therefore, increase feeder capacity. This paper will investigate an IEEE 13-node feeder populated with photovoltaic generators on detailed residential houses with water heater, Heating Ventilation and Air conditioning (HVAC) units, lights, and other plug and convenience loads. An analysis of losses for different power system components, such as transformers, underground and overhead lines, and triplex lines, will be performed. The analysis will utilize different seasons and different solar penetration levels (15%, 30%).

  18. Renewable Generation and Interconnection to the Electrical Grid in Southern California

    Broader source: Energy.gov [DOE]

    Presentation covers the topic of "Renewable Generation and Interconnection to the Electrical Grid in Southern California," given at the Spring 2010 Federal Utility Partnership Working Group (FUPWG) meeting in Providence, Rhode Island.

  19. Impact of unit commitment constraints on generation expansion planning with renewables

    E-Print Network [OSTI]

    Palmintier, Bryan Stephen

    Growing use of renewables pushes thermal generators against operating constraints - e.g. ramping, minimum output, and operating reserves - that are traditionally ignored in expansion planning models. We show how including ...

  20. NASA/FPL Renewable Project Case Study: Space Coast Next Generation Solar Energy Center

    Broader source: Energy.gov [DOE]

    Presentation covers the NASA/FPL Renewable Project Case Study: Space Coast Next Generation Solar Energy Center given at the Spring 2009 Federal Utility Partnership Working Group (FUPWG) meeting in...

  1. Renewable Power Generation JV Company | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form History FacebookRegenesysRenewable Hawaii Inc Jump to:Renewable Power

  2. Distributed Generation Operational Reliability and Availability...

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

    Reliability and Availability Database, Final Report, January 2004 Distributed Generation Operational Reliability and Availability Database, Final Report, January 2004 This final...

  3. Worst Case Scenario for Large Distribution Networks with Distributed Generation

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Worst Case Scenario for Large Distribution Networks with Distributed Generation M. A. Mahmud) in distri- bution network has significant effects on voltage profile for both customers and distribution on variation of the voltage and the amount of DG that can be connected to the distribution networks. This paper

  4. Topic 5: Renewable Power 1Networking and Distributed Systems

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    . · Desired choices (Renewable Sources): · Marine: Wave and Tidal · PV: Solar · Wind · Hydro #12;Carbon Tax Dr: ·Are influenced by the alignment of the sun and moon. #12;Tidal Energ

  5. Microgrids: distributed on-site generation

    E-Print Network [OSTI]

    Watson, Andrew

    : · Diversity of the load profile as a function of microgrid size; · Feasibility of accurate control of bothMicrogrids: distributed on-site generation Suleiman Abu-Sharkh, Rachel Li, Tom Markvart, Neil Ross for Climate Change Research Technical Report 22 #12;1 Microgrids: distributed on-site generation Tyndall

  6. Picking up the PACE : a new tool for financing energy efficiency and distributed renewable energy

    E-Print Network [OSTI]

    Dadakis, Jacquelyn (Jacquelyn MacKenzie)

    2010-01-01T23:59:59.000Z

    This thesis describes the potential of new legislation in Louisiana to provide municipal financing for energy efficient building retrofits and distributed renewable energy. First, the thesis identifies how energy efficiency ...

  7. Renewable Electricity Generation (Fact Sheet), Office of Energy Efficiency

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM615_CostNSAR -Department of Energyasto theand Renewable Energy, U.S.

  8. Renewable Electricity Generation Success Stories | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM615_CostNSAR -Department of Energyasto theand Renewable Energy,

  9. Renewable Energy for Electricity Generation in Latin America: Market,

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎ | RoadmapRenewable Energy

  10. ReEDS Modeling of the President's 2020 U.S. Renewable Electricity Generation Goal (Presentation)

    SciTech Connect (OSTI)

    Zinaman, O.; Mai, T.; Lantz, E.; Gelman, R.; Porro, G.

    2014-05-01T23:59:59.000Z

    President Obama announced in 2012 an Administration Goal for the United States to double aggregate renewable electricity generation from wind, solar, and geothermal sources by 2020. This analysis, using the Regional Energy Deployment System (ReEDS) model, explores a full range of future renewable deployment scenarios out to 2020 to assess progress and outlook toward this goal. Under all modeled conditions, consisting of 21 scenarios, the Administration Goal is met before 2020, and as early as 2015.

  11. Renewable Auction Mechanism (RAM)

    Broader source: Energy.gov [DOE]

    The Renewable Auction Mechanism (RAM), approved by the California Public Utilities Commission (CPUC) in December 2010, is expected to result in 1,299 megawatts (MW) of new distributed generation ...

  12. Report on Distributed Generation Penetration Study

    SciTech Connect (OSTI)

    Miller, N.; Ye, Z.

    2003-08-01T23:59:59.000Z

    This report documents part of a multiyear research program dedicated to the development of requirements to support the definition, design, and demonstration of a distributed generation-electric power system interconnection interface concept. The report focuses on the dynamic behavior of power systems when a significant portion of the total energy resource is distributed generation. It also focuses on the near-term reality that the majority of new DG relies on rotating synchronous generators for energy conversion.

  13. A Game-Theoretic Framework for Control of Distributed Renewable-Based Energy Resources in Smart Grids

    E-Print Network [OSTI]

    Liberzon, Daniel

    A Game-Theoretic Framework for Control of Distributed Renewable-Based Energy Resources in Smart¸ar Abstract-- Renewable energy plays an important role in distributed energy resources in smart grid systems. Deployment and integration of renewable energy resources require an intelligent management to optimize

  14. Nonlinear DSTATCOM controller design for distribution network with distributed generation to enhance voltage stability

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Nonlinear DSTATCOM controller design for distribution network with distributed generation Accepted 19 June 2013 Keywords: Distributed generation Distribution network DSATACOM Partial feedback connected to a distribution network with distributed generation (DG) to regulate the line voltage

  15. STAFF REPORT RENEWABLE POWER IN

    E-Print Network [OSTI]

    , distributed generation, energy storage, environmental impacts, environmental justice, feedin tariff, solar photovoltaic, solar thermal, transmission, wind, workforce development. Please use Portfolio Standard requires utilities to increase the amount of renewable generation sold to customers

  16. Distributed Generation Dispatch Optimization under Various Electricity Tariffs

    E-Print Network [OSTI]

    Firestone, Ryan; Marnay, Chris

    2007-01-01T23:59:59.000Z

    LBNL-54447. Distributed Generation Dispatch OptimizationA Business Case for On-Site Generation: The BD Biosciencesrelated work. Distributed Generation Dispatch Optimization

  17. Distributed Generation Investment by a Microgrid Under Uncertainty

    E-Print Network [OSTI]

    Siddiqui, Afzal; Marnay, Chris

    2006-01-01T23:59:59.000Z

    option on natural gas generation, which increases in valueL ABORATORY Distributed Generation Investment by a MicrogridORMMES’06 Distributed Generation Investment by a Microgrid

  18. High Performance, Low Cost Hydrogen Generation from Renewable Energy

    SciTech Connect (OSTI)

    Ayers, Katherine [Proton OnSite] [Proton OnSite; Dalton, Luke [Proton OnSite] [Proton OnSite; Roemer, Andy [Proton OnSite] [Proton OnSite; Carter, Blake [Proton OnSite] [Proton OnSite; Niedzwiecki, Mike [Proton OnSite] [Proton OnSite; Manco, Judith [Proton OnSite] [Proton OnSite; Anderson, Everett [Proton OnSite] [Proton OnSite; Capuano, Chris [Proton OnSite] [Proton OnSite; Wang, Chao-Yang [Penn State University] [Penn State University; Zhao, Wei [Penn State University] [Penn State University

    2014-02-05T23:59:59.000Z

    Renewable hydrogen from proton exchange membrane (PEM) electrolysis is gaining strong interest in Europe, especially in Germany where wind penetration is already at critical levels for grid stability. For this application as well as biogas conversion and vehicle fueling, megawatt (MW) scale electrolysis is required. Proton has established a technology roadmap to achieve the necessary cost reductions and manufacturing scale up to maintain U.S. competitiveness in these markets. This project represents a highly successful example of the potential for cost reduction in PEM electrolysis, and provides the initial stack design and manufacturing development for Proton’s MW scale product launch. The majority of the program focused on the bipolar assembly, from electrochemical modeling to subscale stack development through prototyping and manufacturing qualification for a large active area cell platform. Feasibility for an advanced membrane electrode assembly (MEA) with 50% reduction in catalyst loading was also demonstrated. Based on the progress in this program and other parallel efforts, H2A analysis shows the status of PEM electrolysis technology dropping below $3.50/kg production costs, exceeding the 2015 target.

  19. Distributed generation - the fuel processing example

    SciTech Connect (OSTI)

    Victor, R.A. [Praxair, Inc., Tonawanda, NY (United States); Farris, P.J.; Maston, V. [International Fuel Cells Corp., South Windsor, CT (United States)

    1996-12-31T23:59:59.000Z

    The increased costs of transportation and distribution are leading many commercial and industrial firms to consider the on-site generation for energy and other commodities used in their facilities. This trend has been accelerated by the development of compact, efficient processes for converting basic raw materials into finished services at the distributed sites. Distributed generation with the PC25{trademark} fuel cell power plant is providing a new cost effective technology to meet building electric and thermal needs. Small compact on-site separator systems are providing nitrogen and oxygen to many industrial users of these gases. The adaptation of the fuel processing section of the PC25 power plant for on-site hydrogen generation at industrial sites extends distributed generation benefits to the users of industrial hydrogen.

  20. Voltage Management of Networks with Distributed Generation

    E-Print Network [OSTI]

    O'Donnell, James

    2008-01-01T23:59:59.000Z

    At present there is much debate about the impacts and benefits of increasing the amount of generation connected to the low voltage areas of the electricity distribution network. The UK government is under political ...

  1. Role of Energy Storage with Renewable Electricity Generation (Report Summary) (Presentation)

    SciTech Connect (OSTI)

    Denholm, P.; Ela, E.; Kirby, B.; Milligan, M.

    2010-03-01T23:59:59.000Z

    Renewable energy sources, such as wind and solar, have vast potential to reduce dependence on fossil fuels and greenhouse gas emissions in the electric sector. Climate change concerns, state initiatives including renewable portfolio standards, and consumer efforts are resulting in increased deployments of both technologies. Both solar photovoltaics (PV) and wind energy have variable and uncertain (sometimes referred to as "intermittent") output, which are unlike the dispatchable sources used for the majority of electricity generation in the United States. The variability of these sources has led to concerns regarding the reliability of an electric grid that derives a large fraction of its energy from these sources as well as the cost of reliably integrating large amounts of variable generation into the electric grid. In this report, we explore the role of energy storage in the electricity grid, focusing on the effects of large-scale deployment of variable renewable sources (primarily wind and solar energy).

  2. Renewable Energy 32 (2007) 12431257 Methane generation in landfills

    E-Print Network [OSTI]

    Columbia University

    2007-01-01T23:59:59.000Z

    dioxide. In his 2003 review of energy recovery from landfill gas, Willumsen [2,3] reported that as of 2001 followed by Germany and United Kingdom (Table 1). The capacity of most landfill gas-fuelled generators, close to Los Angeles California; the biogas is combusted in a steam boiler that powers a 50-MW turbine

  3. RELATING TO LOCAL GOVERNMENT; ENACTING THE RENEWABLE ENERGY FINANCING DISTRICT ACT; AUTHORIZING MUNICIPALITIES AND

    E-Print Network [OSTI]

    Kammen, Daniel M.

    TO LOCAL GOVERNMENT; ENACTING THE RENEWABLE ENERGY FINANCING DISTRICT ACT; AUTHORIZING MUNICIPALITIES to encourage the development of distributed generation renewable energy sources and the installation. the creation and administration of renewable energy financing districts to facilitate the development

  4. Load-shedding probabilities with hybrid renewable power generation and energy storage

    E-Print Network [OSTI]

    Xu , Huan

    Load-shedding probabilities with hybrid renewable power generation and energy storage Huan Xu, Ufuk to the intermittency in the power output. These difficulties can be alleviated by effectively utilizing energy storage turbines, supplemented with energy storage. We use a simple storage model alongside a combination

  5. The significance of energy storage for renewable energy generation and the role of instrumentation and measurement.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 The significance of energy storage for renewable energy generation and the role and Alternative Energies Commission INES: National Institute For Solar Energy ENERGY STORAGE: FROM PRESENT TO EMERGING TECHNOLOGIES Energy storage is not a new concept but is currently getting increasing importance

  6. Evaluating Policies to Increase the Generation of Electricity from Renewable Energy

    E-Print Network [OSTI]

    Schmalensee, Richard

    Focusing on the U.S. and the E.U., this essay seeks to advance four main propositions. First, the incidence of the short-run costs of programs to subsidize the generation of electricity from renewable sources varies with ...

  7. Renewable Energy Requirements for Future Building Codes: Energy Generation and Economic Analysis

    SciTech Connect (OSTI)

    Russo, Bryan J.; Weimar, Mark R.; Dillon, Heather E.

    2011-09-30T23:59:59.000Z

    As the model energy codes are improved to reach efficiency levels 50 percent greater than current codes, installation of on-site renewable energy generation is likely to become a code requirement. This requirement will be needed because traditional mechanisms for code improvement, including the building envelope, mechanical systems, and lighting, have been maximized at the most cost-effective limit.

  8. Guide to Purchasing Green Power: Renewable Electricity, Renewable...

    Energy Savers [EERE]

    Guide to Purchasing Green Power: Renewable Electricity, Renewable Energy Certificates, and On-Site Renewable Generation Guide to Purchasing Green Power: Renewable Electricity,...

  9. Abstract--Distributed generation (DG) has brought great attention from the power community, especially

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    generation and DFACTS (distribution network Flexible AC Transmission System). In these researches, especially when it is associated with renewable energy sources, as a sustainable energy alternative. Some DG applications, especially on high penetration levels, may have adverse impact on the transmission

  10. Program Plan for Renewable Energy generation of electricity. Response to Section 2111 of the Energy Policy Act of 1992

    SciTech Connect (OSTI)

    NONE

    1994-12-01T23:59:59.000Z

    A 5-Year Program Plan for providing cost-effective options for generating electricity from renewable energy sources is presented by the US Department of Energy Office of Energy Efficiency and Renewable Energy. The document covers the Utility-Sector situation, scope of the program, specific generating technologies, and implementation of the program plan.

  11. Production Tax Credit for Renewable Electricity Generation (released in AEO2005)

    Reports and Publications (EIA)

    2005-01-01T23:59:59.000Z

    In the late 1970s and early 1980s, environmental and energy security concerns were addressed at the federal level by several key pieces of energy legislation. Among them, the Public Utility Regulatory Policies Act of 1978 (PURPA), P.L. 95-617, required regulated power utilities to purchase alternative electricity generation from qualified generating facilities, including small-scale renewable generators; and the Investment Tax Credit (ITC), P.L. 95-618, part of the Energy Tax Act of 1978, provided a 10% federal tax credit on new investment in capital-intensive wind and solar generation technologies.

  12. Variable Renewable Generation can Provide Balancing Control to the Electric Power System (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-09-01T23:59:59.000Z

    As wind and solar plants become more common in the electric power system, they may be called on to provide grid support services to help maintain system reliability. For example, through the use of inertial response, primary frequency response, and automatic generation control (also called secondary frequency response), wind power can provide assistance in balancing the generation and load on the system. These active power (i.e., real power) control services have the potential to assist the electric power system in times of disturbances and during normal conditions while also potentially providing economic value to consumers and variable renewable generation owners. This one-page, two-sided fact sheet discusses the grid-friendly support and benefits renewables can provide to the electric power system.

  13. The Integration of Energy Efficiency, Renewable Energy, Demand Response and Climate Change: Challenges and Opportunities for Evaluators and Planners

    E-Print Network [OSTI]

    Vine, Edward

    2007-01-01T23:59:59.000Z

    distributed generation facilities that have received ratepayer incentives toward the utility’distributed generation system owners to retain 100% of their renewable energy credits (RECs), and that utilities

  14. The Potential Benefits of Distributed Generation and the Rate...

    Broader source: Energy.gov (indexed) [DOE]

    The Potential Benefits of Distributed Generation and the Rate-Related Issues That May Impede Its Expansion The Potential Benefits of Distributed Generation and the Rate-Related...

  15. Distributed Generation Dispatch Optimization under Various Electricity Tariffs

    E-Print Network [OSTI]

    Firestone, Ryan; Marnay, Chris

    2007-01-01T23:59:59.000Z

    utility experience with RTP tariffs is described in 3. Distributed GenerationUtilities Commission, Division of Ratepayer Advocates have also provided support on related work. Distributed Generation

  16. The Value of Distributed Generation and CHP Resources in Wholesale...

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

    The Value of Distributed Generation and CHP Resources in Wholesale Power Markets, September 2005 The Value of Distributed Generation and CHP Resources in Wholesale Power Markets,...

  17. Utility Integrated Resource Planning: An Emerging Driver of New Renewable Generation in the Western United States

    E-Print Network [OSTI]

    Bolinger, Mark; Wiser, Ryan

    2005-01-01T23:59:59.000Z

    towards that portfolio. Renewable resources were once rarelyobjectively evaluate renewable resources. Planned Renewableamount of planned renewable resource additions. In the case

  18. Renewable Energy: Distributed Generation Policies and Programs | Department

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015of 2005UNS Electric,RMPipeline First Oil CeremonyCurriculumof Energy

  19. Integration of Demand Side Management, Distributed Generation, Renewable

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, search OpenEIHesperia,IDGWPIndiantown,Innoferm GmbHCaltechOpensystems,Energy

  20. Integration of Demand Side Management, Distributed Generation, Renewable

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, search OpenEIHesperia,IDGWPIndiantown,Innoferm

  1. Distributed Generation Study/Patterson Farms CHP System Using Renewable

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE FacilityDimondale, Michigan:Emerling Farm <Site Description OtherBiogas |

  2. Assessment of Distributed Generation Potential in JapaneseBuildings

    SciTech Connect (OSTI)

    Zhou, Nan; Marnay, Chris; Firestone, Ryan; Gao, Weijun; Nishida,Masaru

    2005-05-25T23:59:59.000Z

    To meet growing energy demands, energy efficiency, renewable energy, and on-site generation coupled with effective utilization of exhaust heat will all be required. Additional benefit can be achieved by integrating these distributed technologies into distributed energy resource (DER) systems (or microgrids). This research investigates a method of choosing economically optimal DER, expanding on prior studies at the Berkeley Lab using the DER design optimization program, the Distributed Energy Resources Customer Adoption Model (DER-CAM). DER-CAM finds the optimal combination of installed equipment from available DER technologies, given prevailing utility tariffs, site electrical and thermal loads, and a menu of available equipment. It provides a global optimization, albeit idealized, that shows how the site energy loads can be served at minimum cost by selection and operation of on-site generation, heat recovery, and cooling. Five prototype Japanese commercial buildings are examined and DER-CAM applied to select the economically optimal DER system for each. The five building types are office, hospital, hotel, retail, and sports facility. Based on the optimization results, energy and emission reductions are evaluated. Furthermore, a Japan-U.S. comparison study of policy, technology, and utility tariffs relevant to DER installation is presented. Significant decreases in fuel consumption, carbon emissions, and energy costs were seen in the DER-CAM results. Savings were most noticeable in the sports facility (a very favourable CHP site), followed by the hospital, hotel, and office building.

  3. Distributed Generation Dispatch Optimization under Various Electricity Tariffs

    E-Print Network [OSTI]

    Firestone, Ryan; Marnay, Chris

    2007-01-01T23:59:59.000Z

    time of use United States Postal Service v Distributed Generation Dispatch Optimization Under Various Electricity Tariffs

  4. Greenhouse Gas Abatement with Distributed Generation in California's Commercial Buildings

    E-Print Network [OSTI]

    Stadler, Michael

    2010-01-01T23:59:59.000Z

    utility electricity and natural gas purchases, amortized capital and maintenance costs for distributed generation (

  5. Abstract--The capacity of distributed generation (DG) is set to increase significantly with much of the plant connecting to

    E-Print Network [OSTI]

    Harrison, Gareth

    limiting network capability in absorbing new DG. Finally, it demonstrates the use of optimal power flow market. Index Terms-- distributed generation, optimal power flow, power distribution. I. INTRODUCTION O in England and Wales (18% in Scotland) is derived from renewable resources. With existing large hydro

  6. Renewable Auction Mechanism (RAM) (California)

    Broader source: Energy.gov [DOE]

    The Renewable Auction Mechanism (RAM), approved by the California Public Utilities Commission (CPUC) in December 2010, is expected to result in 1,299 megawatts (MW) of new distributed generation...

  7. This document is a preprint version of the final paper: M. Soshinskaya, W. H. J. Graus, J. M. Guerrero, and J. C. Vasquez, "Microgrids: experiences, barriers and success factors," Renewable and Sustainable Energy Reviews, 2014 Elsevier.

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    ; Renewable Energy; Islanding; Distributed Generation; Energy Storage; Barriers Acronyms greenhouse gas (GHG); distributed generation (DG); distributed energy resources (DER); distributed storage (DS); Distribution System production. This has led to increased implementation of distributed generation (DG) technologies, which

  8. Avoiding Distribution System Upgrade Costs Using Distributed Generation

    SciTech Connect (OSTI)

    Schienbein, Lawrence A.; Balducci, Patrick J.; Nguyen, Tony B.; Brown, Daryl R.; DeSteese, John G.; Speer, Gregory A.

    2004-01-20T23:59:59.000Z

    PNNL, in cooperation with three utilities, developed a database and methodology to analyze and characterize the avoided costs of Distributed Generation (DG) deployment as an alternative to traditional distribution system investment. After applying a number of screening criteria to the initial set of 307 cases, eighteen were selected for detailed analysis. Alternative DG investment scenarios were developed for these cases to permit capital, operation, maintenance, and fuel costs to be identified and incorporated into the analysis. The “customer-owned” backup power generator option was also investigated. The results of the analysis of the 18 cases show that none yielded cost savings under the alternative DG scenarios. However, the DG alternative systems were configured using very restrictive assumptions concerning reliability, peak rating, engine types and acceptable fuel. In particular it was assumed that the DG alternative in each case must meet the reliability required of conventional distribution systems (99.91% reliability). The analysis was further constrained by a requirement that each substation meet the demands placed upon it by a one in three weather occurrence. To determine if, by relaxing these requirements, the DG alternative might be more viable, one project was re-examined. The 99.91% reliability factor was still assumed for normal operating conditions but redundancy required to maintain reliability was relaxed for the relatively few hours every three years where extreme weather caused load to exceed present substation capacity. This resulted in the deferment of capital investment until later years and reduced the number of engines required for the project. The cost of both the conventional and DG alternative also dropped because the centralized power generation, variable O&M, and DG fuels costs were calculated based on present load requirements in combination with long-term forecasts of load growth, as opposed to load requirements plus a buffer based on predictions of extraordinary weather conditions. Application of the relaxed set of assumptions reduced the total cost of the DG alternative by roughly 57 percent from $7.0 million to $3.0 million. The reduction, however, did not change the overall result of the analysis, as the cost of the conventional distribution system upgrade alternative remained lower at $1.7 million. This paper also explores the feasibility of using a system of backup generators to defer investment in distribution system infrastructure. Rather than expanding substation capacity at substations experiencing slow load growth rates, PNNL considered a scenario where diesel generators were installed on location at customers participating in a program designed to offer additional power security and reliability to the customer and connection to the grid. The backup generators, in turn, could be used to meet peak demand for a limited number of hours each year, thus deferring distribution system investment. Data from an existing program at one of the three participating utilities was used to quantify the costs associated with the backup generator scenario. The results of the “customer owned” backup power generator analysis showed that in all cases the nominal cost of the DG scenario is more than the nominal cost of the base-case conventional distribution system upgrade scenario. However, in two of the cases the total present value costs of the alternative backup generator scenarios were between 15 and 22% less than those for the conventional scenarios. Overall, the results of the study offer considerable encouragement that the use of DG systems can defer conventional distribution system upgrades under the right conditions and when the DG configurations are intelligently designed. Using existing customer-owned DG to defer distribution system upgrades appears to be an immediate commercially-viable opportunity.

  9. Enhancing the Smart Grid: Integrating Clean Distributed and Renewable

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny:RevisedAdvisoryStandardGeneration | Department of Energy Enhancing the Smart

  10. Dispersed power and renewables

    SciTech Connect (OSTI)

    O`Sullivan, J.B.

    1995-12-31T23:59:59.000Z

    Distributed power generation and renewable energy sources are discussed: The following topics are discussed: distributed resources, distributed generation, commercialization requirements, biomass power, location of existing biomass feedstocks, biomass business plan components, North Carolina BGCC partnership, New York biomass co-firing project, alfalfa for power and feed, Hawaii Pioneer Mill LOI project, next steps for biomass, wind power activity, photovoltaic modules and arrays, lead-acid batteries, superconducting magnetic energy storage, fuel cells, and electric power industry trends.

  11. A Distributed Generation Control Architecture for Islanded AC Microgrids

    E-Print Network [OSTI]

    Dominguez-Garcia, Alejandro

    1 A Distributed Generation Control Architecture for Islanded AC Microgrids Stanton T. Cady, Student architecture for generation control in islanded microgrids, and illustrate the performance Member, IEEE Abstract In this paper, we propose a distributed architecture for generation control

  12. Renewable build-up pathways for the US: Generation costs are not system costs

    E-Print Network [OSTI]

    Becker, Sarah; Andresen, Gorm B; Jacobson, Mark Z; Schramm, Stefan; Greiner, Martin

    2014-01-01T23:59:59.000Z

    The transition to a future electricity system based primarily on wind and solar PV is examined for all regions in the contiguous US. We present optimized pathways for the build-up of wind and solar power for least backup energy needs as well as for least cost obtained with a simplified, lightweight model based on long-term high resolution weather-determined generation data. In the absence of storage, the pathway which achieves the best match of generation and load, thus resulting in the least backup energy requirements, generally favors a combination of both technologies, with a wind/solar PV energy mix of about 80/20 in a fully renewable scenario. The least cost development is seen to start with 100% of the technology with the lowest average generation costs first, but with increasing renewable installations, economically unfavorable excess generation pushes it toward the minimal backup pathway. Surplus generation and the entailed costs can be reduced significantly by combining wind and solar power, and/or a...

  13. IMPACT OF FUEL CELL BASED HYBRID DISTRIBUTED GENERATION IN AN ELECTRICAL DISTRIBUTION

    E-Print Network [OSTI]

    unknown authors

    Recent developments in distributed generation technologies have enabled new options for supplying electrical energy in remote and off-grid areas. The importance of fuel cells has increased during the past decade due to the extensive use of fossil fuels for electrical power has resulted in many negative consequences. Fuel cells are now closer to commercialization than past and they have the ability to fulfill all of the global power needs while meeting the economic and environmental expectations..The objective of this paper is to study the economic performance and operation of a fuel cell distributed generation and to provide an assessment of the economic issues associated in electrical network. In this study, with HOMER (Hybrid Optimization Model for Electric Renewables) software, NREL’s micro power optimization model performed a range of equipment options over varying constraints and sensitivities to optimize small power distribution systems. Its flexibility makes it useful in the evaluation of design issues in the planning and early decision-making phase of rural electrification projects. This study concludes that fuel cell systems appear competitive today if is connected with proposed hybrid DG in an AC distribution grid. The overall energy management strategy for coordinating the power flows among the different energy sources is presented with cost-effective approach.

  14. Pathways to Decarbonization: Natural Gas and Renewable Energy...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    distributed generation from renewable resources and NG, energy efficiency, storage, and demand response contribute significant value to the power sector, and customers are at the...

  15. Physical Effects of Distributed PV Generation on California's Distribution System

    E-Print Network [OSTI]

    Cohen, Michael A

    2015-01-01T23:59:59.000Z

    Deployment of high-penetration photovoltaic (PV) power is expected to have a range of effects -- both positive and negative -- on the distribution grid. The magnitude of these effects may vary greatly depending upon feeder topology, climate, PV penetration level, and other factors. In this paper we present a simulation study of eight representative distribution feeders in three California climates at PV penetration levels up to 100\\%, supported by a unique database of distributed PV generation data that enables us to capture the impact of PV variability on feeder voltage and voltage regulating equipment. When comparing the influence of feeder location (i.e. climate) versus feeder type on outcomes, we find that location more strongly influences the incidence of reverse power flow, reductions in peak loading and the presence of voltage excursions. On the other hand, we find that feeder characteristics more strongly influence the magnitude of loss reduction and changes in voltage regulator operations. We find th...

  16. Distributed Generation: Challenges and Opportunities, 7. edition

    SciTech Connect (OSTI)

    NONE

    2007-10-15T23:59:59.000Z

    The report is a comprehensive study of the Distributed Generation (DG) industry. The report takes a wide-ranging look at the current and future state of DG and both individually and collectively addresses the technologies of Microturbines, Reciprocating Engines, Stirling Engines, Fuel Cells, Photovoltaics, Concentrating Solar, Wind, and Microgrids. Topics covered include: the key technologies being used or planned for DG; the uses of DG from utility, energy service provider, and customer viewpoints; the economics of DG; the benefits of DG from multiple perspectives; the barriers that exist to implementing DG; the government programs supporting the DG industry; and, an analysis of DG interconnection and net metering rules.

  17. Centralized and Distributed Generated Power Systems -A Comparison Approach

    E-Print Network [OSTI]

    White Paper Power Systems Engineering Research Center Empowering Minds to Engineer the Future ElectricCentralized and Distributed Generated Power Systems - A Comparison Approach Future Grid Initiative Energy System #12;Centralized and Distributed Generated Power Systems - A Comparison Approach Prepared

  18. Distributed multicast tree generation with dynamic group membership Frank Adelsteina

    E-Print Network [OSTI]

    Richard III, Golden G.

    Distributed multicast tree generation with dynamic group membership Frank Adelsteina , Golden G. Another distinguishing character- istic for tree generation algorithms is centralized versus distributed, efficient network utilization becomes a growing concern. Multicast transmission may use network bandwidth

  19. Distributed Generation with Heat Recovery and Storage

    SciTech Connect (OSTI)

    Siddiqui, Afzal; Marnay, Chris; Firestone, Ryan M.; Zhou, Nan

    2005-07-29T23:59:59.000Z

    Electricity generated by distributed energy resources (DER) located close to end-use loads has the potential to meet consumer requirements more efficiently than the existing centralized grid. Installation of DER allows consumers to circumvent the costs associated with transmission congestion and other non-energy costs of electricity delivery and potentially to take advantage of market opportunities to purchase energy when attractive. On-site thermal power generation is typically less efficient than central station generation, but by avoiding non-fuel costs of grid power and utilizing combined heat and power (CHP) applications, i.e., recovering heat from small-scale on-site generation to displace fuel purchases, then DER can become attractive to a strictly cost-minimizing consumer. In previous efforts, the decisions facing typical commercial consumers have been addressed using a mixed-integer linear programme, the DER Customer Adoption Model(DER-CAM). Given the site s energy loads, utility tariff structure, and information (both technical and financial) on candidate DER technologies, DER-CAM minimizes the overall energy cost for a test year by selecting the units to install and determining their hourly operating schedules. In this paper, the capabilities of DER-CAM are enhanced by the inclusion of the option to store recovered low-grade heat. By being able to keep an inventory of heat for use in subsequent periods, sites are able to lower costs even further by reducing off-peak generation and relying on storage. This and other effects of storages are demonstrated by analysis of five typical commercial buildings in San Francisco, California, and an estimate of the cost per unit capacity of heat storage is calculated.

  20. Investment and Upgrade in Distributed Generation under Uncertainty

    E-Print Network [OSTI]

    Siddiqui, Afzal

    2008-01-01T23:59:59.000Z

    utility tari?s, the electricity price may be revised only Investment and Upgrade in Distributed Generation

  1. Short-Term Load Forecasting Error Distributions and Implications for Renewable Integration Studies: Preprint

    SciTech Connect (OSTI)

    Hodge, B. M.; Lew, D.; Milligan, M.

    2013-01-01T23:59:59.000Z

    Load forecasting in the day-ahead timescale is a critical aspect of power system operations that is used in the unit commitment process. It is also an important factor in renewable energy integration studies, where the combination of load and wind or solar forecasting techniques create the net load uncertainty that must be managed by the economic dispatch process or with suitable reserves. An understanding of that load forecasting errors that may be expected in this process can lead to better decisions about the amount of reserves necessary to compensate errors. In this work, we performed a statistical analysis of the day-ahead (and two-day-ahead) load forecasting errors observed in two independent system operators for a one-year period. Comparisons were made with the normal distribution commonly assumed in power system operation simulations used for renewable power integration studies. Further analysis identified time periods when the load is more likely to be under- or overforecast.

  2. Abstract--The integration of variable renewable generation sources continues to be a significant area of focus for power

    E-Print Network [OSTI]

    by this variability, wind generation often requires additional balancing resources to compensate for the variability of additional wind generation into the Northwest Power Pool. It quantifies the number of vehicles required area of focus for power system planning. Renewable portfolio standards and initiatives to reduce

  3. Automatically Generating Symbolic Prefetches for Distributed Transactional Memories

    E-Print Network [OSTI]

    Boyer, Edmond

    Automatically Generating Symbolic Prefetches for Distributed Transactional Memories Alokika Dash and Brian Demsky University of California, Irvine Abstract. Developing efficient distributed applications for distributed applications. We propose a new approach to prefetching, symbolic prefetching, that can prefetch

  4. Distributed Generation with Heat Recovery and Storage

    E-Print Network [OSTI]

    Siddiqui, Afzal S.; Marnay, Chris; Firestone, Ryan M.; Zhou, Nan

    2008-01-01T23:59:59.000Z

    selection of on-site power generation with combined heat andTotal Electricity Generation Figure 13. Small MercantileWeekday Total Electricity Generation (No Storage Adoption

  5. SOFC combined cycle systems for distributed generation

    SciTech Connect (OSTI)

    Brown, R.A.

    1997-05-01T23:59:59.000Z

    The final phase of the tubular SOFC development program will focus on the development and demonstration of pressurized solid oxide fuel cell (PSOFC)/gas turbine (GT) combined cycle power systems for distributed power applications. The commercial PSOFC/GT product line will cover the power range 200 kWe to 50 MWe, and the electrical efficiency for these systems will range from 60 to 75% (net AC/LHV CH4), the highest of any known fossil fueled power generation technology. The first demonstration of a pressurized solid oxide fuel cell/gas turbine combined cycle will be a proof-of-concept 250 kWe PSOFC/MTG power system consisting of a single 200 kWe PSOFC module and a 50 kWe microturbine generator (MTG). The second demonstration of this combined cycle will be 1.3 MWe fully packaged, commercial prototype PSOFC/GT power system consisting of two 500 kWe PSOFC modules and a 300 kWe gas turbine.

  6. Distributed Generation with Heat Recovery and Storage

    SciTech Connect (OSTI)

    Siddiqui, Afzal S.; Marnay, Chris; Firestone, Ryan M.; Zhou, Nan

    2006-06-16T23:59:59.000Z

    Electricity produced by distributed energy resources (DER)located close to end-use loads has the potential to meet consumerrequirements more efficiently than the existing centralized grid.Installation of DER allows consumers to circumvent the costs associatedwith transmission congestion and other non-energy costs of electricitydelivery and potentially to take advantage of market opportunities topurchase energy when attractive. On-site, single-cycle thermal powergeneration is typically less efficient than central station generation,but by avoiding non-fuel costs of grid power and by utilizing combinedheat and power (CHP) applications, i.e., recovering heat from small-scaleon-site thermal generation to displace fuel purchases, DER can becomeattractive to a strictly cost-minimizing consumer. In previous efforts,the decisions facing typical commercial consumers have been addressedusing a mixed-integer linear program, the DER Customer Adoption Model(DER-CAM). Given the site s energy loads, utility tariff structure, andinformation (both technical and financial) on candidate DER technologies,DER-CAM minimizes the overall energy cost for a test year by selectingthe units to install and determining their hourly operating schedules. Inthis paper, the capabilities of DER-CAM are enhanced by the inclusion ofthe option to store recovered low-grade heat. By being able to keep aninventory of heat for use in subsequent periods, sites are able to lowercosts even further by reducing lucrative peak-shaving generation whilerelying on storage to meet heat loads. This and other effects of storageare demonstrated by analysis of five typical commercial buildings in SanFrancisco, California, USA, and an estimate of the cost per unit capacityof heat storage is calculated.

  7. Decision-Support Software for Grid Operators: Transmission Topology Control for Infrastructure Resilience to the Integration of Renewable Generation

    SciTech Connect (OSTI)

    None

    2012-03-16T23:59:59.000Z

    GENI Project: The CRA team is developing control technology to help grid operators more actively manage power flows and integrate renewables by optimally turning on and off entire power lines in coordination with traditional control of generation and load resources. The control technology being developed would provide grid operators with tools to help manage transmission congestion by identifying the facilities whose on/off status must change to lower generation costs, increase utilization of renewable resources and improve system reliability. The technology is based on fast optimization algorithms for the near to real-time change in the on/off status of transmission facilities and their software implementation.

  8. Renewable Electricity Generation (Fact Sheet), Office of Energy Efficiency and Renewable Energy, U.S. Department of Energy (DOE)

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not Found Item Not Foundenhancer activity than FINAL ProgressEnergy,renewable energy

  9. Putting renewables and energy efficiency to work: How many jobs can the clean energy industry generate in the US?

    E-Print Network [OSTI]

    Kammen, Daniel M.

    clean energy supply can provide greater energy independence and security, has notable environmentalPutting renewables and energy efficiency to work: How many jobs can the clean energy industry generate in the US? Max Wei a,Ã, Shana Patadia b , Daniel M. Kammen a a Energy and Resources Group, 310

  10. June 2014 Most Viewed Documents for Power Generation And Distribution...

    Office of Scientific and Technical Information (OSTI)

    Documents for Power Generation And Distribution Science Subject Feed Seventh Edition Fuel Cell Handbook NETL (2004) 118 > Electric power high-voltage transmission lines:...

  11. A Valuation-Based Framework for Considering Distributed Generation...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    tools to inform further discussions. Keywords-tariff design, ratemaking, distributed generation, photovoltaic, solar valuation, value of solar, cost-benefit analysis I....

  12. Distributed Generation Investment by a Microgrid under Uncertainty

    E-Print Network [OSTI]

    Siddiqui, Afzal

    2008-01-01T23:59:59.000Z

    L, editor. 11 th Annual Real Options Conference, Berkeley,from its utility. Using the real options approach, we find aDistributed Generation; Real Options; Optimal Investment;

  13. Distributed Generation Investment by a Microgrid Under Uncertainty

    E-Print Network [OSTI]

    Siddiqui, Afzal; Marnay, Chris

    2006-01-01T23:59:59.000Z

    utility. Using the real options approach, we find naturalDistributed Generation; Real Options; Optimal Investment. 1.based microgrid via the real options approach to determine

  14. Poland - Economic and Financial Benefits of Distributed Generation...

    Open Energy Info (EERE)

    of Distributed Generation Small-Scale, Gas-Fired CHP AgencyCompany Organization Argonne National Laboratory Sector Energy Topics Background analysis Website http:...

  15. Distributed Generation with Heat Recovery and Storage

    E-Print Network [OSTI]

    Siddiqui, Afzal S.; Marnay, Chris; Firestone, Ryan M.; Zhou, Nan

    2008-01-01T23:59:59.000Z

    Only Load Electricity Generation By Fuel in the U.S.electricity generation from most sources, except oil, is growing to meet the growing demand and that fossil fuels

  16. Renewable Energy and Efficiency Modeling Analysis Partnership: An Analysis of How Different Energy Models Addressed a Common High Renewable Energy Penetration Scenario in 2025

    E-Print Network [OSTI]

    Blair, N.

    2010-01-01T23:59:59.000Z

    Renewables 2025 Renewable Generation Wind Biomass (solidy sal es. • Renewable generation from biomass units appears20% RPS 2025 Renewable Generation Wind Biomass (solid fuel,

  17. Distributed generation capabilities of the national energy modeling system

    SciTech Connect (OSTI)

    LaCommare, Kristina Hamachi; Edwards, Jennifer L.; Marnay, Chris

    2003-01-01T23:59:59.000Z

    This report describes Berkeley Lab's exploration of how the National Energy Modeling System (NEMS) models distributed generation (DG) and presents possible approaches for improving how DG is modeled. The on-site electric generation capability has been available since the AEO2000 version of NEMS. Berkeley Lab has previously completed research on distributed energy resources (DER) adoption at individual sites and has developed a DER Customer Adoption Model called DER-CAM. Given interest in this area, Berkeley Lab set out to understand how NEMS models small-scale on-site generation to assess how adequately DG is treated in NEMS, and to propose improvements or alternatives. The goal is to determine how well NEMS models the factors influencing DG adoption and to consider alternatives to the current approach. Most small-scale DG adoption takes place in the residential and commercial modules of NEMS. Investment in DG ultimately offsets purchases of electricity, which also eliminates the losses associated with transmission and distribution (T&D). If the DG technology that is chosen is photovoltaics (PV), NEMS assumes renewable energy consumption replaces the energy input to electric generators. If the DG technology is fuel consuming, consumption of fuel in the electric utility sector is replaced by residential or commercial fuel consumption. The waste heat generated from thermal technologies can be used to offset the water heating and space heating energy uses, but there is no thermally activated cooling capability. This study consists of a review of model documentation and a paper by EIA staff, a series of sensitivity runs performed by Berkeley Lab that exercise selected DG parameters in the AEO2002 version of NEMS, and a scoping effort of possible enhancements and alternatives to NEMS current DG capabilities. In general, the treatment of DG in NEMS is rudimentary. The penetration of DG is determined by an economic cash-flow analysis that determines adoption based on the n umber of years to a positive cash flow. Some important technologies, e.g. thermally activated cooling, are absent, and ceilings on DG adoption are determined by some what arbitrary caps on the number of buildings that can adopt DG. These caps are particularly severe for existing buildings, where the maximum penetration for any one technology is 0.25 percent. On the other hand, competition among technologies is not fully considered, and this may result in double-counting for certain applications. A series of sensitivity runs show greater penetration with net metering enhancements and aggressive tax credits and a more limited response to lowered DG technology costs. Discussion of alternatives to the current code is presented in Section 4. Alternatives or improvements to how DG is modeled in NEMS cover three basic areas: expanding on the existing total market for DG both by changing existing parameters in NEMS and by adding new capabilities, such as for missing technologies; enhancing the cash flow analysis but incorporating aspects of DG economics that are not currently represented, e.g. complex tariffs; and using an external geographic information system (GIS) driven analysis that can better and more intuitively identify niche markets.

  18. Puerto Rico- Property Tax Exemption for Solar and Renewable Energy Equipment

    Broader source: Energy.gov [DOE]

    Puerto Rico provides a property tax exemption for all "solar powered material, equipment or accessory and renewable energy collection, storage, generation, distribution, and application equipment."...

  19. SMALL TURBOGENERATOR TECHNOLOGY FOR DISTRIBUTED GENERATION

    SciTech Connect (OSTI)

    Sy Ali; Bob Moritz

    2001-09-01T23:59:59.000Z

    This report is produced in under Contract DE-FC26-00NT40914, awarded in accordance with U.S. Department of Energy solicitation DE-PS26-00FT40759, ''Development of Technologies and Capabilities for Fossil Energy-Wide Coal, Natural Gas and Oil R&D Programs'', area of interest 7, ''Advanced Turbines and Engines.'' As a result of ten years of collaborative fuel cell systems studies with U.S. fuel cell manufacturers, initiated to evaluate the gas turbine opportunities likely to result from this technology, Rolls-Royce in Indianapolis has established a clear need for the creation of a turbogenerator to a specification that cannot be met by available units. Many of the required qualities are approached, but not fully met, by microturbines, which tend to be too small and low in pressure ratio. Market evaluation suggests a 1 MW fuel cell hybrid, incorporating a turbogenerator of about 250 kW, is a good market entry product (large enough to spread the costs of a relatively complex plant, but small enough to be acceptable to early adopters). The fuel cell stack occupies the position of a combustor in the turbogenerator, but delivers relatively low turbine entry temperature (1600 F [870 C]). If fitted with a conventional combustor and run stand-alone at full uncooled turbine temperature (1800 F [980 C]), the turbogenerator will develop more power. The power can be further enhanced if the turbogenerator is designed to have flow margin in its fuel cell role (by running faster). This margin can be realized by running at full speed and it is found that power can be increased to the 0.7 to 1.0 MW range, depending on initial fuel cell stack flow demand. The fuel cell hybrid applications require increased pressure ratio (at least 6 rather than the 3-4 of microturbines) and very long life for a small machine. The outcome is a turbogenerator that is very attractive for stand-alone operation and has been the subject of unsolicited enthusiasm from potential users who see an application in grid support. The machine is consistent with 21st century power generation objectives. It will be more efficient than a microturbine and also more cost effective because it does not require an expensive recuperator. It will produce ultra-low emissions because it has a low combustor delivery temperature. It will also avoid producing hazardous waste because it requires no lube system. These qualities are obtained by combining, and in some instances extending, the best of available technologies rather than breaking wholly new ground. Limited ''barrier technology'' rig tests of bearing systems and alternator configuration are proposed to support the extension of technology. Low combustion temperature also has merit in handling alternative fuels with minimum emissions and minimum materials degradation. Program continuation is proposed that will simultaneously provide technology support to a SECA fuel cell hybrid system and a distributed generation turbogenerator. This technology program will be led by a Rolls-Royce team based in Indianapolis with access to extensive small turbogenerator experience gathered in DOE (and other) programs by Allison Mobile Power Systems. It is intended that subsequent production will be in the U.S., but the products may have substantial export potential.

  20. Integration of Demand Side Management, Distributed Generation...

    Open Energy Info (EERE)

    generation, smart grid and energy storage. Annex 9 is a list of pilot programs and case studies, with links to those resources. References Retrieved from "http:...

  1. Accounting for fuel price risk when comparing renewable togas-fired generation: the role of forward natural gas prices

    SciTech Connect (OSTI)

    Bolinger, Mark; Wiser, Ryan; Golove, William

    2004-07-17T23:59:59.000Z

    Unlike natural gas-fired generation, renewable generation (e.g., from wind, solar, and geothermal power) is largely immune to fuel price risk. If ratepayers are rational and value long-term price stability, then--contrary to common practice--any comparison of the levelized cost of renewable to gas-fired generation should be based on a hedged gas price input, rather than an uncertain gas price forecast. This paper compares natural gas prices that can be locked in through futures, swaps, and physical supply contracts to contemporaneous long-term forecasts of spot gas prices. We find that from 2000-2003, forward gas prices for terms of 2-10 years have been considerably higher than most contemporaneous long-term gas price forecasts. This difference is striking, and implies that comparisons between renewable and gas-fired generation based on these forecasts over this period have arguably yielded results that are biased in favor of gas-fired generation.

  2. Investment and Upgrade in Distributed Generation under Uncertainty

    E-Print Network [OSTI]

    Guillas, Serge

    decision as the opportunity cost of exercising the investment option increases as well. In this paper, weInvestment and Upgrade in Distributed Generation under Uncertainty Afzal Siddiqui Karl Maribu 13 for microgrids to use small-scale distributed generation (DG) and combined heat and power (CHP) applications via

  3. Navajo Generating Station and Clean-Energy Alternatives: Options for Renewables

    SciTech Connect (OSTI)

    Hurlbut, D. J.; Haase, S.; Turchi, C. S.; Burman, K.

    2012-06-01T23:59:59.000Z

    In January 2012, the National Renewable Energy Laboratory delivered to the Department of the Interior the first part of a study on Navajo Generating Station (Navajo GS) and the likely impacts of BART compliance options. That document establishes a comprehensive baseline for the analysis of clean energy alternatives, and their ability to achieve benefits similar to those that Navajo GS currently provides. This analysis is a supplement to NREL's January 2012 study. It provides a high level examination of several clean energy alternatives, based on the previous analysis. Each has particular characteristics affecting its relevance as an alternative to Navajo GS. It is assumed that the development of any alternative resource (or portfolio of resources) to replace all or a portion of Navajo GS would occur at the end of a staged transition plan designed to reduce economic disruption. We assume that replacing the federal government's 24.3% share of Navajo GS would be a cooperative responsibility of both the U.S. Bureau of Reclamation (USBR) and the Central Arizona Water Conservation District (CAWCD).

  4. Renewable Power Options for Electricity Generation on Kaua’i: Economics and Performance Modeling

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Hawaii Clean Energy Initiative (HCEI) is working with a team led by the U.S. Department of Energy’s (DOE) National Renewable Energy Laboratory (NREL) to assess the economic and technical feasibility of increasing the contribution of renewable energy in Hawaii.

  5. Distributed Generation in Buildings (released in AEO2005)

    Reports and Publications (EIA)

    2008-01-01T23:59:59.000Z

    Currently, distributed generation provides a very small share of residential and commercial electricity requirements in the United States. The Annual Energy Outlook 2005 reference case projects a significant increase in electricity generation in the buildings sector, but distributed generation is expected to remain a small contributor to the sectors energy needs. Although the advent of higher energy prices or more rapid improvement in technology could increase the use of distributed generation relative to the reference case projection, the vast majority of electricity used in buildings is projected to continue to be purchased from the grid.

  6. 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. Renewable Electricity Futures

    E-Print Network [OSTI]

    Mai, Ph.D. 5th International Conference on Integration of Renewable and Distributed Energy Resources characteristics are unique to each RE generation technology. Abundant Renewable Energy Resources Darker Colors and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Renewable Electricity Futures Trieu

  7. Distributed Medium Access Control for Next Generation CDMA Wireless Networks

    E-Print Network [OSTI]

    Zhuang, Weihua

    Distributed Medium Access Control for Next Generation CDMA Wireless Networks Hai Jiang, Princeton wireless networks are expected to have a simple infrastructure with distributed control. In this article, we consider a generic distributed network model for future wireless multi- media communications

  8. Integrated Simulation Development and Decision Support Tool-Set for Utility Market and Distributed Solar Power Generation

    SciTech Connect (OSTI)

    Daye, Tony [Green Power Labs

    2013-09-30T23:59:59.000Z

    This project will enable utilities to develop long-term strategic plans that integrate high levels of renewable energy generation, and to better plan power system operations under high renewable penetration. The program developed forecast data streams for decision support and effective integration of centralized and distributed solar power generation in utility operations. This toolset focused on real time simulation of distributed power generation within utility grids with the emphasis on potential applications in day ahead (market) and real time (reliability) utility operations. The project team developed and demonstrated methodologies for quantifying the impact of distributed solar generation on core utility operations, identified protocols for internal data communication requirements, and worked with utility personnel to adapt the new distributed generation (DG) forecasts seamlessly within existing Load and Generation procedures through a sophisticated DMS. This project supported the objectives of the SunShot Initiative and SUNRISE by enabling core utility operations to enhance their simulation capability to analyze and prepare for the impacts of high penetrations of solar on the power grid. The impact of high penetration solar PV on utility operations is not only limited to control centers, but across many core operations. Benefits of an enhanced DMS using state-of-the-art solar forecast data were demonstrated within this project and have had an immediate direct operational cost savings for Energy Marketing for Day Ahead generation commitments, Real Time Operations, Load Forecasting (at an aggregate system level for Day Ahead), Demand Response, Long term Planning (asset management), Distribution Operations, and core ancillary services as required for balancing and reliability. This provided power system operators with the necessary tools and processes to operate the grid in a reliable manner under high renewable penetration.

  9. Utility Integrated Resource Planning: An Emerging Driver of NewRenewable Generation in the Western United States

    SciTech Connect (OSTI)

    Bolinger, Mark; Wiser, Ryan

    2005-09-25T23:59:59.000Z

    In the United States, markets for renewable generation--especially wind power--have grown substantially in recent years. This growth is typically attributed to technology improvements and resulting cost reductions, the availability of federal tax incentives, and aggressive state policy efforts. But another less widely recognized driver of new renewable generation is poised to play a major role in the coming years: utility integrated resource planning (IRP). Common in the late-1980s to mid-1990s, but relegated to lesser importance as many states took steps to restructure their electricity markets in the late-1990s, IRP has re-emerged in recent years as an important tool for utilities and regulators, particularly in regions such as the western United States, where retail competition has failed to take root. As practiced in the United States, IRP is a formal process by which utilities analyze the costs, benefits, and risks of all resources available to them--both supply- and demand-side--with the ultimate goal of identifying a portfolio of resources that meets their future needs at lowest cost and/or risk. Though the content of any specific utility IRP is unique, all are built on a common basic framework: (1) development of peak demand and load forecasts; (2) assessment of how these forecasts compare to existing and committed generation resources; (3) identification and characterization of various resource portfolios as candidates to fill a projected resource deficiency; (4) analysis of these different ''candidate'' resource portfolios under base-case and alternative future scenarios; and finally, (5) selection of a preferred portfolio, and creation of a near-term action plan to begin to move towards that portfolio. Renewable resources were once rarely considered seriously in utility IRP. In the western United States, however, the most recent resource plans call for a significant amount of new wind power capacity. These planned additions appear to be motivated by the improved economics of wind power, an emerging understanding that wind integration costs are manageable, and a growing acceptance of wind by electric utilities. Equally important, utility IRPs are increasingly recognizing the inherent risks in fossil-based generation portfolios--especially natural gas price risk and the financial risk of future carbon regulation--and the benefits of renewable energy in mitigating those risks. This article, which is based on a longer report from Berkeley Lab,i examines how twelve investor-owned utilities (IOUs) in the western United States--Avista, Idaho Power, NorthWestern Energy (NWE), Portland General Electric (PGE), Puget Sound Energy (PSE), PacifiCorp, Public Service Company of Colorado (PSCo), Nevada Power, Sierra Pacific, Pacific Gas & Electric (PG&E), Southern California Edison (SCE), and San Diego Gas & Electric (SDG&E)--treat renewable energy in their most recent resource plans (as of July 2005). In aggregate, these twelve utilities supply approximately half of all electricity demand in the western United States. In reviewing these plans, our purpose is twofold: (1) to highlight the growing importance of utility IRP as a current and future driver of renewable generation in the United States, and (2) to suggest possible improvements to the methods used to evaluate renewable generation as a resource option. As such, we begin by summarizing the amount and types of new renewable generation planned as a result of these twelve IRPs. We then offer observations about the IRP process, and how it might be improved to more objectively evaluate renewable resources.

  10. Abstract Microgrids are a new concept for future energy dis-tribution systems that enable renewable energy integration and

    E-Print Network [OSTI]

    Collins, Emmanuel

    1 Abstract ­ Microgrids are a new concept for future energy dis- tribution systems that enable renewable energy integration and improved energy management capability. Microgrids consist of multiple power quality and power distribution reliability, microgrids need to operate in both grid

  11. Renewable Power Options for Electrical Generation on Kaua'i: Economics and Performance Modeling

    SciTech Connect (OSTI)

    Burman, K.; Keller, J.; Kroposki, B.; Lilienthal, P.; Slaughter, R.; Glassmire, J.

    2011-11-01T23:59:59.000Z

    The Hawaii Clean Energy Initiative (HCEI) is working with a team led by the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) to assess the economic and technical feasibility of increasing the contribution of renewable energy in Hawaii. This part of the HCEI project focuses on working with Kaua'i Island Utility Cooperative (KIUC) to understand how to integrate higher levels of renewable energy into the electric power system of the island of Kaua'i. NREL partnered with KIUC to perform an economic and technical analysis and discussed how to model PV inverters in the electrical grid.

  12. Operation of Distributed Generation Under Stochastic Prices

    SciTech Connect (OSTI)

    Siddiqui, Afzal S.; Marnay, Chris

    2005-11-30T23:59:59.000Z

    We model the operating decisions of a commercial enterprisethatneeds to satisfy its periodic electricity demand with either on-sitedistributed generation (DG) or purchases from the wholesale market. Whilethe former option involves electricity generation at relatively high andpossibly stochastic costs from a set of capacity-constrained DGtechnologies, the latter implies unlimited open-market transactions atstochastic prices. A stochastic dynamic programme (SDP) is used to solvethe resulting optimisation problem. By solving the SDP with and withoutthe availability of DG units, the implied option values of the DG unitsare obtained.

  13. Options for Control of Reactive Power by Distributed Photovoltaic Generators

    E-Print Network [OSTI]

    Sulc, Petr; Backhaus, Scott; Chertkov, Michael

    2010-01-01T23:59:59.000Z

    High penetration levels of distributed photovoltaic(PV) generation on an electrical distribution circuit present several challenges and opportunities for distribution utilities. Rapidly varying irradiance conditions may cause voltage sags and swells that cannot be compensated by slowly responding utility equipment resulting in a degradation of power quality. Although not permitted under current standards for interconnection of distributed generation, fast-reacting, VAR-capable PV inverters may provide the necessary reactive power injection or consumption to maintain voltage regulation under difficult transient conditions. As side benefit, the control of reactive power injection at each PV inverter provides an opportunity and a new tool for distribution utilities to optimize the performance of distribution circuits, e.g. by minimizing thermal losses. We discuss and compare via simulation various design options for control systems to manage the reactive power generated by these inverters. An important design de...

  14. Investigation into the potential of energy storage to tackle intermittency in renewable energy generation 

    E-Print Network [OSTI]

    Barbour, Edward

    2013-11-28T23:59:59.000Z

    Renewable Energy is by nature intermittent and matching the supply of energy to specific time dependent demand poses huge challenges. Energy storage is a useful tool in handling this temporal disparity, although except ...

  15. Communication Systems for Grid Integration of Renewable Energy Resources

    E-Print Network [OSTI]

    Yu, F Richard; Xiao, Weidong; Choudhury, Paul

    2011-01-01T23:59:59.000Z

    There is growing interest in renewable energy around the world. Since most renewable sources are intermittent in nature, it is a challenging task to integrate renewable energy resources into the power grid infrastructure. In this grid integration, communication systems are crucial technologies, which enable the accommodation of distributed renewable energy generation and play extremely important role in monitoring, operating, and protecting both renewable energy generators and power systems. In this paper, we review some communication technologies available for grid integration of renewable energy resources. Then, we present the communication systems used in a real renewable energy project, Bear Mountain Wind Farm (BMW) in British Columbia, Canada. In addition, we present the communication systems used in Photovoltaic Power Systems (PPS). Finally, we outline some research challenges and possible solutions about the communication systems for grid integration of renewable energy resources.

  16. Distributed Generation Dispatch Optimization under Various Electricity Tariffs

    E-Print Network [OSTI]

    Firestone, Ryan; Marnay, Chris

    2007-01-01T23:59:59.000Z

    purchase abs. cooling offset electric supply (kW) hourTariffs electric supply (kW) abs. cooling offset purchasecooling offset Distributed Generation Dispatch Optimization Under Various Electricity Tariffs electric supply (

  17. Investment and Upgrade in Distributed Generation under Uncertainty

    E-Print Network [OSTI]

    Siddiqui, Afzal

    2008-01-01T23:59:59.000Z

    ment of uncertainty via real options increases the value of2007) and the 2007 Real Options Conference in Berkeley, CA,distributed generation, real options JEL Codes: D81, Q40

  18. Advanced Distributed Generation LLC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlinPapersWindeySanta Clara,Addington,Admire,CA 94105Advanced Distributed

  19. Distributed Generation Systems Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision| Open Energy Information At1986)Distributed

  20. Local Control of Reactive Power by Distributed Photovoltaic Generators

    E-Print Network [OSTI]

    Turitsyn, Konstantin S; Backhaus, Scott; Chertkov, Misha

    2010-01-01T23:59:59.000Z

    High penetration levels of distributed photovoltaic (PV) generation on an electrical distribution circuit may severely degrade power quality due to voltage sags and swells caused by rapidly varying PV generation during cloud transients coupled with the slow response of existing utility compensation and regulation equipment. Although not permitted under current standards for interconnection of distributed generation, fast-reacting, VAR-capable PV inverters may provide the necessary reactive power injection or consumption to maintain voltage regulation under difficult transient conditions. As side benefit, the control of reactive power injection at each PV inverter provides an opportunity and a new tool for distribution utilities to optimize the performance of distribution circuits, e.g. by minimizing thermal losses. We suggest a local control scheme that dispatches reactive power from each PV inverter based on local instantaneous measurements of the real and reactive components of the consumed power and the re...

  1. Generating generalized distributions from dynamical simulation

    E-Print Network [OSTI]

    Barth, Eric J.; Laird, Brian Bostian; Leimkuhler, Benedict J.

    2003-03-18T23:59:59.000Z

    virtual momentum related to the actual momentum of the system by p˜5sp.3 The equations of motion generated by the Nose´ Hamiltonian @Eq. ~1!# are dq dt 5M 21p˜/s2, ~2! dp˜ dt 52„V~q!, ~3! ds dt 5 p Q , ~4! dp dt 5 p˜TM21p˜ s3 2gkBT/s . ~5! The Nose´ method... regulates the temperature of the sys- tem through a dynamical time transformation given by dt/dt5s , where t is the Nose´ ~virtual! time and t is real time. The remarkable property of Nose´ dynamics is that mi- crocanonical sampling of the extended phase...

  2. Introduction to Network Analysis 21 Generating Functions and Degree Distributions

    E-Print Network [OSTI]

    Safro, Ilya

    Introduction to Network Analysis 21 Generating Functions and Degree Distributions we add zero term because of infinity #12;Introduction to Network Analysis 22 Number of second neighbors of a vertex Probability of having k second neighbors given m first neighbors degree distribution Prob excess degrees of m

  3. Low-cost distributed solar-thermal-electric power generation

    E-Print Network [OSTI]

    Sanders, Seth

    Low-cost distributed solar-thermal-electric power generation A. Der Minassians, K. H. Aschenbach discuss the technical and economic feasibility of a low-cost distributed solar-thermal-electric power technologies should be judged by output power per dollar rather than by efficiency or other technical merits

  4. PLANNING FOR OPTIMAL ACCOMMODATION OF DISPERSED GENERATION IN DISTRIBUTION NETWORKS

    E-Print Network [OSTI]

    Harrison, Gareth

    and consequently threaten the achievement of Government renewable energy targets. In this paper, techniques Renewables Directive and national incentives such as the UK Renewables Obligation [1] are encouraging the development of renewable energy resources, in particular, wind. These resources are located in areas with low

  5. Sandia Energy - Renewable Energy Integration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    need to integrate renewable energy, improve energy efficiency, and allow consumers more control over their energy consumption. One of the challenges of renewable power generation...

  6. Western Renewable Energy Zones (Presentation)

    SciTech Connect (OSTI)

    Hein, J.

    2011-06-01T23:59:59.000Z

    This presentation summarizes recent developments and trends pertaining to competitive renewable energy zones, transmission planning and the integration of renewable generation resources.

  7. Reburning renewable biomass for emissions control and ash deposition effects in power generation

    E-Print Network [OSTI]

    Oh, Hyuk Jin

    2009-05-15T23:59:59.000Z

    Cattle biomass (CB) has been proposed as a renewable, supplementary fuel for co-firing and reburning. Reburning coal with CB has the potential to reduce NOx and Hg emissions from coal fired systems. The present research focuses on three areas...

  8. Voltage Control of Distribution Networks with Distributed Generation using Reactive Power

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Voltage Control of Distribution Networks with Distributed Generation using Reactive Power to control voltage of distribution networks with DG using reactive power compensation approach. In this paper profile within the specified limits, it is essential to regulate the reactive power of the compensators

  9. Articles about Distributed Wind | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    and is poised for future growth that could double the capacity of renewable electricity generation from resources like wind power by 2020. March 31, 2014 PNNL Reports Distributed...

  10. Office of Energy Efficiency and Renewable Energy Fiscal Year...

    Office of Environmental Management (EM)

    Renewable Electricity Generation Office of Energy Efficiency and Renewable Energy Fiscal Year 2014 Budget Rollout - Renewable Electricity Generation Office of Energy Efficiency and...

  11. A Study of Distributed Generation System Characteristics and Protective Load Control Strategy

    E-Print Network [OSTI]

    Chen, Zhe

    different type of WTs are integrated into a DGS, the DGS presents different properties. Therefore Turbines (WT) have attracted significant attentions. A DGS with renewable sources such as WTs and solar panels is distinct from a conventional power system. The renewable generation units make a DGS

  12. Efficiency and Air Quality Implications of Distributed Generation and Combined Heat

    E-Print Network [OSTI]

    Efficiency and Air Quality Implications of Distributed Generation and Combined Heat and Power potentially increase exposure to air pollutants. When distributed generation is efficiently deployed to determine accurately the efficiencies and emissions of various applications of distributed generation

  13. PV Ramping in a Distributed Generation Environment: A Study Using Solar Measurements; Preprint

    SciTech Connect (OSTI)

    Sengupta, M.; Keller, J.

    2012-06-01T23:59:59.000Z

    Variability in Photovoltaic (PV) generation resulting from variability in the solar radiation over the PV arrays is a topic of continuing concern for those involved with integrating renewables onto existing electrical grids. The island of Lanai, Hawaii is an extreme example of the challenges that integrators will face due to the fact that it is a small standalone grid. One way to study this problem is to take high-resolution solar measurements in multiple locations and model simultaneous PV production for various sizes at those locations. The National Renewable Energy Laboratory (NREL) collected high-resolution solar data at four locations on the island where proposed PV plants will be deployed in the near future. This data set provides unique insight into how the solar radiation may vary between points that are proximal in distance, but diverse in weather, due to the formation of orographic clouds in the center of the island. Using information about each proposed PV plant size, power output was created at high resolution. The team analyzed this output to understand power production ramps at individual locations and the effects of aggregating the production from all four locations. Hawaii is a unique environment, with extremely variable events occurring on a daily basis. This study provided an excellent opportunity for understanding potential worst-case scenarios for PV ramping. This paper provides an introduction to the datasets that NREL collected over a year and a comprehensive analysis of PV variability in a distributed generation scenario.

  14. Options for Control of Reactive Power by Distributed Photovoltaic Generators

    E-Print Network [OSTI]

    Petr Sulc; Konstantin Turitsyn; Scott Backhaus; Michael Chertkov

    2010-08-04T23:59:59.000Z

    High penetration levels of distributed photovoltaic(PV) generation on an electrical distribution circuit present several challenges and opportunities for distribution utilities. Rapidly varying irradiance conditions may cause voltage sags and swells that cannot be compensated by slowly responding utility equipment resulting in a degradation of power quality. Although not permitted under current standards for interconnection of distributed generation, fast-reacting, VAR-capable PV inverters may provide the necessary reactive power injection or consumption to maintain voltage regulation under difficult transient conditions. As side benefit, the control of reactive power injection at each PV inverter provides an opportunity and a new tool for distribution utilities to optimize the performance of distribution circuits, e.g. by minimizing thermal losses. We discuss and compare via simulation various design options for control systems to manage the reactive power generated by these inverters. An important design decision that weighs on the speed and quality of communication required is whether the control should be centralized or distributed (i.e. local). In general, we find that local control schemes are capable for maintaining voltage within acceptable bounds. We consider the benefits of choosing different local variables on which to control and how the control system can be continuously tuned between robust voltage control, suitable for daytime operation when circuit conditions can change rapidly, and loss minimization better suited for nighttime operation.

  15. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M. M.

    2012-09-01T23:59:59.000Z

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  16. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-10-01T23:59:59.000Z

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  17. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-11-01T23:59:59.000Z

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  18. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2013-04-01T23:59:59.000Z

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  19. Renewable Energy Growth Program

    Broader source: Energy.gov [DOE]

    In 2014, Act H 7727 created the Renewable Energy Growth (REG) program with the goal to promote installation of grid connected renewable energy within the load zones of electric distribution...

  20. Real-Time Deferrable Load Control: Handling the Uncertainties of Renewable Generation

    E-Print Network [OSTI]

    Low, Steven H.

    - ables are not only intermittent but also difficult to predict. For example, wind generation prediction

  1. A planning scheme for penetrating embedded generation in power distribution grids

    E-Print Network [OSTI]

    Wang, Jiankang, Ph. D. Massachusetts Institute of Technology

    2013-01-01T23:59:59.000Z

    Penetrating Embedded Generation, or Distributed Generation (DG), in power distribution grids presents great benefits and substantial positive social impacts to utilities, system operators and electricity consumers. Existing ...

  2. Ris Energy Report 4 Distributed generation 1 What is distributed generation?

    E-Print Network [OSTI]

    generation (DG) refers to an emerging evolu- tion of the electric power generation systems, in which all of the Euro- pean Union (CEU) as an essential part of the develop- ment of the European power system the use of modelling in these contexts, including: · strategic planning and policymaking · detailed system

  3. Generate Uniform Transverse Distributed Electron Beam along a Beam Line

    E-Print Network [OSTI]

    Jiao, Y

    2015-01-01T23:59:59.000Z

    It has been reported that transverse distribution shaping can help to further enhance the energy extraction efficiency in a terawatt, tapered X-ray free-electron laser. Thus, methods of creating and keeping almost uniform transverse distributed (UTD) beam within undulators are required. This study shows that a UTD electron beam can be generated within evenly distributed drift sections where undulators can be placed, by means of octupoles and particular optics. A concrete design is presented, and numerical simulations are done to verify the proposed method.

  4. Renewable Energy to be Half of Global Generation Increase to 2035: IEA |

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010InJanuaryGeothermalRenewable Energy and

  5. January 2013 Most Viewed Documents for Power Generation And Distributi...

    Office of Scientific and Technical Information (OSTI)

    January 2013 Most Viewed Documents for Power Generation And Distribution Lessons from Large-Scale Renewable Energy Integration Studies: Preprint Bird, L.; Milligan, M. Small punch...

  6. Real-Time Deferrable Load Control: Handling the Uncertainties of Renewable Generation

    E-Print Network [OSTI]

    Low, Steven H.

    are difficult to predict. For example, wind generation pre- diction has a root-mean-square error of around 18

  7. WindTurbineGenerator Introduction of the Renewable Micro-Grid Test-Bed

    E-Print Network [OSTI]

    Johnson, Eric E.

    Simulator Wind Turbine: PMSM, 3kW, 8.3A Wind Generator: PMSM, 3kW, 8.3A 3 AC/DC Converter & DC/AC Inverter Wind Turbine: Torque or Speed Control Wind Generator: PQ Control Cubicle #4: Energy Storage Generator #1 3kW, 8.3A Wind Turbine #1 3kW, 8.3A Wind Turbine #2 3kW Wind Generator #2 3kW RS232

  8. Introduction to Network Analysis 15 Generating Functions and Degree Distributions

    E-Print Network [OSTI]

    Duchowski, Andrew T.

    Introduction to Network Analysis 15 Generating Functions and Degree Distributions #12;Introduction to Network Analysis 16 Polylogarithm drawn values add to a specific sum #12;Introduction to Network Analysis-loops, multi-edges #12;Introduction to Network Analysis 18 Configuration Model Conclusion: expected number

  9. Parton distributions and event generators Stefano Carrazza, Stefano Forte

    E-Print Network [OSTI]

    Heller, Barbara

    Parton distributions and event generators Stefano Carrazza, Stefano Forte Dipartimento di Fisica ingredient in achieving all of these goals is the integration of parton distri- butions within Monte Carlo, and data collected in an experimental fiducial region. Whereas next-to-leading (NLO) order Monte Carlo

  10. Energy Storage and Distributed Energy Generation Project, Final Project Report

    SciTech Connect (OSTI)

    Schwank, Johannes; Mader, Jerry; Chen, Xiaoyin; Mi, Chris; Linic, Suljo; Sastry, Ann Marie; Stefanopoulou, Anna; Thompson, Levi; Varde, Keshav

    2008-03-31T23:59:59.000Z

    This report serves as a Final Report under the “Energy Storage and Distribution Energy Generation Project” carried out by the Transportation Energy Center (TEC) at the University of Michigan (UM). An interdisciplinary research team has been working on fundamental and applied research on: -distributed power generation and microgrids, -power electronics, and -advanced energy storage. The long-term objective of the project was to provide a framework for identifying fundamental research solutions to technology challenges of transmission and distribution, with special emphasis on distributed power generation, energy storage, control methodologies, and power electronics for microgrids, and to develop enabling technologies for novel energy storage and harvesting concepts that can be simulated, tested, and scaled up to provide relief for both underserved and overstressed portions of the Nation’s grid. TEC’s research is closely associated with Sections 5.0 and 6.0 of the DOE "Five-year Program Plan for FY2008 to FY2012 for Electric Transmission and Distribution Programs, August 2006.”

  11. Design of a Norm-Bounded LQG Controller for Power Distribution Networks with Distributed Generation

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    . Therefore, control of modern electric power systems becomes more and more challenging as the present trends control is essential. Moreover, induction motor loads account for a large portion of domestic loadsDesign of a Norm-Bounded LQG Controller for Power Distribution Networks with Distributed Generation

  12. RANDOM VARIATE GENERATION FOR THE DIGAMMA AND TRIGAMMA DISTRIBUTIONS Luc Devroye

    E-Print Network [OSTI]

    Devroye, Luc

    RANDOM VARIATE GENERATION FOR THE DIGAMMA AND TRIGAMMA DISTRIBUTIONS Luc Devroye School of Computer these distributions and selected generalized hypergeometric distributions. The generators can also be used for the discrete stable distribution, the Yule distribution, Mizutani's distribution and the Waring distribution

  13. OPF evaluation of distribution network capacity for the connection of distributed generation

    E-Print Network [OSTI]

    Harrison, Gareth

    threaten the achievement of renewable energy targets. One means of addressing this risk is to encourage the network. #12;3 1. Introduction The European Union Renewables Directive and national incentives such as the UK Renewables Obligations [1]-[2] are encouraging the development of renewable energy resources

  14. Modeling and Verification of Distributed Generation and Voltage Regulation Equipment for Unbalanced Distribution Power Systems; Annual Subcontract Report, June 2007

    SciTech Connect (OSTI)

    Davis, M. W.; Broadwater, R.; Hambrick, J.

    2007-07-01T23:59:59.000Z

    This report summarizes the development of models for distributed generation and distribution circuit voltage regulation equipment for unbalanced power systems and their verification through actual field measurements.

  15. Laboratories for the 21st Century Best Practices: Onsite Distributed Generation Systems For Laboratories

    Broader source: Energy.gov [DOE]

    Guide describes general information on implementing onsite distributed generation systems in laboratory environments.

  16. Utility/Industry Partnerships Involving Distributed Generation Technologies in Evolving Electricity Markets

    E-Print Network [OSTI]

    Rastler, D. M.

    Wires Manage Wires defer capital Optimize Energy Services Not Utility Business Not Utility Business New Business Opportunities DISTRIBUTED GENERATION Distributed generation includes small gas turbines, micro-turbines, fuel cells, storage...UTILITYIINDUSTRY PARTNERSHIPS INVOLVING DISTRIBUTED GENERATION TECHNOLOGIES IN EVOLVING ELECTRICITY MARKETS Daniel M. Rastler Manager, Fuel Cells and Distributed Generation Electric Power Research Institute Palo Alto, California ABSTRACT...

  17. Distributed Generation Investment by a Microgrid UnderUncertainty

    SciTech Connect (OSTI)

    Siddiqui, Afzal; Marnay, Chris

    2006-06-16T23:59:59.000Z

    This paper examines a California-based microgrid s decision to invest in a distributed generation (DG) unit that operates on natural gas. While the long-term natural gas generation cost is stochastic, we initially assume that the microgrid may purchase electricity at a fixed retail rate from its utility. Using the real options approach, we find natural gas generating cost thresholds that trigger DG investment. Furthermore, the consideration of operational flexibility by the microgrid accelerates DG investment, while the option to disconnect entirely from the utility is not attractive. By allowing the electricity price to be stochastic, we next determine an investment threshold boundary and find that high electricity price volatility relative to that of natural gas generating cost delays investment while simultaneously increasing the value of the investment. We conclude by using this result to find the implicit option value of the DG unit.

  18. Distributed Generation Investment by a Microgrid under Uncertainty

    SciTech Connect (OSTI)

    Marnay, Chris; Siddiqui, Afzal; Marnay, Chris

    2008-08-11T23:59:59.000Z

    This paper examines a California-based microgrid?s decision to invest in a distributed generation (DG) unit fuelled by natural gas. While the long-term natural gas generation cost is stochastic, we initially assume that the microgrid may purchase electricity at a fixed retail rate from its utility. Using the real options approach, we find a natural gas generation cost threshold that triggers DG investment. Furthermore, the consideration of operational flexibility by the microgrid increases DG investment, while the option to disconnect from the utility is not attractive. By allowing the electricity price to be stochastic, we next determine an investment threshold boundary and find that high electricity price volatility relative to that of natural gas generation cost delays investment while simultaneously increasing the value of the investment. We conclude by using this result to find the implicit option value of the DG unit when two sources of uncertainty exist.

  19. Statkraft is Europe's largest generator of renewable energy and is the leading power company in Norway. The company owns, produces and develops hydropower, wind power, gas-fired power and

    E-Print Network [OSTI]

    Morik, Katharina

    Statkraft is Europe's largest generator of renewable energy and is the leading power company countries. For our office in Düsseldorf we are currently looking to hire a System Manager Renewable Energy. Share our passion for renewable energy and be a part of tomorrow's energy world. Your department

  20. Impact of Generator Flexibility on Electric System Costs and Integration of Renewable Energy

    SciTech Connect (OSTI)

    Palchak, D.; Denholm, P.

    2014-07-01T23:59:59.000Z

    Flexibility of traditional generators plays an important role in accommodating the increased variability and uncertainty of wind and solar on the electric power system. Increased flexibility can be achieved with changes to operational practices or upgrades to existing generation. One challenge is in understanding the value of increasing flexibility, and how this value may change given higher levels of variable generation. This study uses a commercial production cost model to measure the impact of generator flexibility on the integration of wind and solar generators. We use a system that is based on two balancing areas in the Western United States with a range of wind and solar penetrations between 15% and 60%, where instantaneous penetration of wind and solar is limited to 80%.

  1. A Multi-State Model for the Reliability Assessment of a Distributed Generation System via Universal Generating Function

    E-Print Network [OSTI]

    Boyer, Edmond

    , Milan, Italy, Dipartimento di Energia Enrico.zio@polimi.it Abstract The current and future developments renewable technology (e.g. wind or solar, etc.) whose behavior is described by a binary state, working assessment, multi-state modeling, universal generating function #12;2 Notations Solar irradiance Total number

  2. Renewable Energy System Exemption

    Broader source: Energy.gov [DOE]

    In March 2010, South Dakota established a new property tax incentive that replaced two existing property tax incentives for renewable energy. Facilities that generate electricity using wind, solar,...

  3. Renewable Energy Standard

    Broader source: Energy.gov [DOE]

    Rhode Island's Renewable Energy Standard (RES), established in June 2004, requires the state's retail electricity providers -- including non-regulated power producers and distribution companies --...

  4. Reliability Improvement Programs in Steam Distribution and Power Generation Systems

    E-Print Network [OSTI]

    Petto, S.

    RELIABILITY IIIPROVEfWlT PROGRAMS IN STEAM DISTRIBUTION AND POVER GENERATION SYSTEItS Steve Petto Tech/Serv Corporation Blue Bell, PA Abstract This paper will present alternatives to costly corrective maintenance of the steam trap... In the reliability and efficiency of the system. Recent studies have shownt hat more than 40% of all In stalled steam traps and 20% of certain types of valves need some form of corrective action. The majority of all high backpressure problems In condensate return...

  5. A Bio-Based Fuel Cell for Distributed Energy Generation

    SciTech Connect (OSTI)

    Anthony Terrinoni; Sean Gifford

    2008-06-30T23:59:59.000Z

    The technology we propose consists primarily of an improved design for increasing the energy density of a certain class of bio-fuel cell (BFC). The BFCs we consider are those which harvest electrons produced by microorganisms during their metabolism of organic substrates (e.g. glucose, acetate). We estimate that our technology will significantly enhance power production (per unit volume) of these BFCs, to the point where they could be employed as stand-alone systems for distributed energy generation.

  6. Distributional and Efficiency Impacts of Clean and Renewable Energy Standards for Electricity

    E-Print Network [OSTI]

    Rausch, Sebastian

    2012-07-17T23:59:59.000Z

    We examine the efficiency and distributional impacts of greenhouse gas policies directed toward the electricity

  7. Fuel cycle comparison of distributed power generation technologies.

    SciTech Connect (OSTI)

    Elgowainy, A.; Wang, M. Q.; Energy Systems

    2008-12-08T23:59:59.000Z

    The fuel-cycle energy use and greenhouse gas (GHG) emissions associated with the application of fuel cells to distributed power generation were evaluated and compared with the combustion technologies of microturbines and internal combustion engines, as well as the various technologies associated with grid-electricity generation in the United States and California. The results were primarily impacted by the net electrical efficiency of the power generation technologies and the type of employed fuels. The energy use and GHG emissions associated with the electric power generation represented the majority of the total energy use of the fuel cycle and emissions for all generation pathways. Fuel cell technologies exhibited lower GHG emissions than those associated with the U.S. grid electricity and other combustion technologies. The higher-efficiency fuel cells, such as the solid oxide fuel cell (SOFC) and molten carbonate fuel cell (MCFC), exhibited lower energy requirements than those for combustion generators. The dependence of all natural-gas-based technologies on petroleum oil was lower than that of internal combustion engines using petroleum fuels. Most fuel cell technologies approaching or exceeding the DOE target efficiency of 40% offered significant reduction in energy use and GHG emissions.

  8. Optimal Solar PV Arrays Integration for Distributed Generation

    SciTech Connect (OSTI)

    Omitaomu, Olufemi A [ORNL; Li, Xueping [University of Tennessee, Knoxville (UTK)

    2012-01-01T23:59:59.000Z

    Solar photovoltaic (PV) systems hold great potential for distributed energy generation by installing PV panels on rooftops of residential and commercial buildings. Yet challenges arise along with the variability and non-dispatchability of the PV systems that affect the stability of the grid and the economics of the PV system. This paper investigates the integration of PV arrays for distributed generation applications by identifying a combination of buildings that will maximize solar energy output and minimize system variability. Particularly, we propose mean-variance optimization models to choose suitable rooftops for PV integration based on Markowitz mean-variance portfolio selection model. We further introduce quantity and cardinality constraints to result in a mixed integer quadratic programming problem. Case studies based on real data are presented. An efficient frontier is obtained for sample data that allows decision makers to choose a desired solar energy generation level with a comfortable variability tolerance level. Sensitivity analysis is conducted to show the tradeoffs between solar PV energy generation potential and variability.

  9. Evolution of Wholesale Electricity Market Design with Increasing Levels of Renewable Generation

    SciTech Connect (OSTI)

    Ela, E.; Milligan, M.; Bloom, A.; Botterud, A.; Townsend, A.; Levin, T.

    2014-09-01T23:59:59.000Z

    Variable generation such as wind and photovoltaic solar power has increased substantially in recent years. Variable generation has unique characteristics compared to the traditional technologies that supply energy in the wholesale electricity markets. These characteristics create unique challenges in planning and operating the power system, and they can also influence the performance and outcomes from electricity markets. This report focuses on two particular issues related to market design: revenue sufficiency for long-term reliability and incentivizing flexibility in short-term operations. The report provides an overview of current design and some designs that have been proposed by industry or researchers.

  10. Effect of real-time electricity pricing on renewable generators and system emissions

    E-Print Network [OSTI]

    Connolly, Jeremiah P. (Jeremiah Peter)

    2008-01-01T23:59:59.000Z

    Real-time retail pricing (RTP) of electricity, in which the retail price is allowed to vary with very little time delay in response to changes in the marginal cost of generation, offers expected short-run and long-run ...

  11. FORECASTING THE ROLE OF RENEWABLES IN HAWAII

    E-Print Network [OSTI]

    Sathaye, Jayant

    2013-01-01T23:59:59.000Z

    diesel fueL Several renewable technologies have the potential to contribute s to electricity generation.

  12. Value of storage with increased renewable penetration.

    SciTech Connect (OSTI)

    Brainard, James Robert; Roach, Jesse Dillon

    2010-10-01T23:59:59.000Z

    The problem statement for this project is: (1) Renewable energy portfolio standards - (a) high penetration of intermittent and variable renewable generation on the grid, (b) utilities constrained by NERC Control Performance Standards, (c) requires additional resources to match generation with load; and (2) mitigation of impacts with energy storage - at what level of renewable penetration does energy storage become an attractive value proposition. Use a simplified, yet robust dispatch model that: (a) incorporates New Mexico Balance Area load and wind generation data, (b) distributes the load among a suite of generators, (c) quantifies increased generation costs with increased penetration of intermittent and variable renewable generation - fuel, startup, shut down, ramping, standby, etc., (d) tracks and quantifies NERC pentalties and violations, and (e) quantifies storage costs. Dispatch model has been constructed and it: (a) accurately distributes a load among a suite of generators, (b) quantifies duty cycle metrics for each of the generators - cumulative energy production, ramping and non ramping duration, spinning reserves, number of start-ups, and shut down durations, etc., (c) quantifies energy exchanges - cumulative exchanges, duration, and number of exchanges, (d) tracks ACE violations.

  13. The Value of Distributed Generation under Different TariffStructures

    SciTech Connect (OSTI)

    Firestone, Ryan; Magnus Maribu, Karl; Marnay, Chris

    2006-05-31T23:59:59.000Z

    Distributed generation (DG) may play a key role in a modern energy system because it can improve energy efficiency. Reductions in the energy bill, and therefore DG attractiveness, depend on the electricity tariff structure; a system created before widespread adoption of distributed generation. Tariffs have been designed to recover costs equitably amongst customers with similar consumption patterns. Recently, electric utilities began to question the equity of this electricity pricing structure for standby service. In particular, the utilities do not feel that DG customers are paying their fair share of transmission and distribution costs - traditionally recovered through a volumetric($/kWh) mechanism - under existing tariff structures. In response, new tariff structures with higher fixed costs for DG have been implemented in New York and in California. This work analyzes the effects of different electricity tariff structures on DG adoption. First, the effects of the new standby tariffs in New York are analyzed in different regions. Next generalized tariffs are constructed, and the sensitivity to varying levels of the volumetric and the demand ($/kW, i.e. maximum rate) charge component are analyzed on New York's standard and standby tariff as well as California's standby tariff. As expected, DG profitability is reduced with standby tariffs, but often marginally. The new standby structures tend to promote smaller base load systems. The amount of time-of-day variability of volumetric pricing seems to have little effect on DG economics.

  14. Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation

    SciTech Connect (OSTI)

    Faress Rahman; Nguyen Minh

    2004-01-04T23:59:59.000Z

    This report summarizes the work performed by Hybrid Power Generation Systems, LLC (HPGS) during the July 2003 to December 2003 reporting period under Cooperative Agreement DE-FC26-01NT40779 for the U. S. Department of Energy, National Energy Technology Laboratory (DOE/NETL) entitled ''Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation''. The main objective of this project is to develop and demonstrate the feasibility of a highly efficient hybrid system integrating a planar Solid Oxide Fuel Cell (SOFC) and a micro-turbine. In addition, an activity included in this program focuses on the development of an integrated coal gasification fuel cell system concept based on planar SOFC technology. Also, another activity included in this program focuses on the development of SOFC scale up strategies.

  15. 1 Control Challenges of Fuel Cell-Driven Distributed Generation

    E-Print Network [OSTI]

    Valery Knyazkin; Lennart Söder; Claudio Canizares

    Abstract — This paper discusses the load following capability of fuel cell-driven power plants. A linear model of a Solid Oxide Fuel Cell power plant is obtained and utilized for the design of robust controllers which enhance tracking response of the plant and reject disturbances originating from the distribution grid. Two robust controllers are synthesized applying the H? mixed-sensitivity optimization and their performance is validated by means of nonlinear time-domain simulations. The obtained results indicate that the disturbances can be successfully attenuated; however, the tracking response cannot be significantly improved without a modification of the design of the fuel cell power plant. The paper is concluded by a brief discussion on the physical limitations on the fuel cell output power ramp and possible solutions are outlined. Index Terms — Distributed generation, Solid Oxide Fuel Cells, robust control, H ? controller design, disturbance rejection.

  16. Impact of Generator Flexibility on Electric System Costs and Integration of Renewable Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School footballHydrogenIT |HotImpact of Generator Flexibility on

  17. Emissions Benefits of Distributed Generation in the Texas Market

    SciTech Connect (OSTI)

    Hadley, SW

    2005-06-16T23:59:59.000Z

    One potential benefit of distributed generation (DG) is a net reduction in air emissions. While DG will produce emissions, most notably carbon dioxide and nitrogen oxides, the power it displaces might have produced more. This study used a system dispatch model developed at Oak Ridge National Laboratory to simulate the 2012 Texas power market with and without DG. This study compares the reduction in system emissions to the emissions from the DG to determine the net savings. Some of the major findings are that 85% of the electricity displaced by DG during peak hours will be simple cycle natural gas, either steam or combustion turbine. Even with DG running as baseload, 57% of electricity displaced will be simple cycle natural gas. Despite the retirement of some gas-fired steam units and the construction of many new gas turbine and combined cycle units, the marginal emissions from the system remain quite high (1.4 lb NO{sub x}/MWh on peak and 1.1 lb NO{sub x}/MWh baseload) compared to projected DG emissions. Consequently, additions of DG capacity will reduce emissions in Texas from power generation in 2012. Using the DG exhaust heat for combined heat and power provides an even greater benefit, since it eliminates further boiler emissions while adding none over what would be produced while generating electricity. Further studies are warranted concerning the robustness of the result with changes in fuel prices, demands, and mixes of power generating technology.

  18. Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation

    SciTech Connect (OSTI)

    David Deangelis; Rich Depuy; Debashis Dey; Georgia Karvountzi; Nguyen Minh; Max Peter; Faress Rahman; Pavel Sokolov; Deliang Yang

    2004-09-30T23:59:59.000Z

    This report summarizes the work performed by Hybrid Power Generation Systems, LLC (HPGS) during the April to October 2004 reporting period in Task 2.3 (SOFC Scaleup for Hybrid and Fuel Cell Systems) under Cooperative Agreement DE-FC26-01NT40779 for the U. S. Department of Energy, National Energy Technology Laboratory (DOE/NETL), entitled ''Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation''. This study analyzes the performance and economics of power generation systems for central power generation application based on Solid Oxide Fuel Cell (SOFC) technology and fueled by natural gas. The main objective of this task is to develop credible scale up strategies for large solid oxide fuel cell-gas turbine systems. System concepts that integrate a SOFC with a gas turbine were developed and analyzed for plant sizes in excess of 20 MW. A 25 MW plant configuration was selected with projected system efficiency of over 65% and a factory cost of under $400/kW. The plant design is modular and can be scaled to both higher and lower plant power ratings. Technology gaps and required engineering development efforts were identified and evaluated.

  19. Distributed Generation Study/Emerling Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE FacilityDimondale, Michigan:Emerling Farm < Distributed Generation Study

  20. Distributed Generation Study/Floyd Bennett | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE FacilityDimondale, Michigan:Emerling Farm < Distributed Generation

  1. Sandia National Laboratories: Renewable Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    private-sector interest in renewable energy (RE) power generation (on both the residential and commercial scale) and state mandates that utilities generate defined...

  2. State Renewable Electricity Profiles

    Reports and Publications (EIA)

    2012-01-01T23:59:59.000Z

    Presents a summary of current and recent historical data for the renewable electric power industry. The data focuses on net summer capacity and net generation for each type of renewable generator, as well as fossil-fired and nuclear power plant types, for the period 2006 through 2010.

  3. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M.

    2012-10-01T23:59:59.000Z

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It is being presented at the Utility Variable-Generation Integration Group Fall Technical Workshop on October 24, 2012.

  4. Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation

    SciTech Connect (OSTI)

    Eto, Joseph H.; Undrill, John; Mackin, Peter; Daschmans, Ron; Williams, Ben; Haney, Brian; Hunt, Randall; Ellis, Jeff; Illian, Howard; Martinez, Carlos; O'Malley, Mark; Coughlin, Katie; LaCommare, Kristina Hamachi

    2010-12-20T23:59:59.000Z

    An interconnected electric power system is a complex system that must be operated within a safe frequency range in order to reliably maintain the instantaneous balance between generation and load. This is accomplished by ensuring that adequate resources are available to respond to expected and unexpected imbalances and restoring frequency to its scheduled value in order to ensure uninterrupted electric service to customers. Electrical systems must be flexible enough to reliably operate under a variety of"change" scenarios. System planners and operators must understand how other parts of the system change in response to the initial change, and need tools to manage such changes to ensure reliable operation within the scheduled frequency range. This report presents a systematic approach to identifying metrics that are useful for operating and planning a reliable system with increased amounts of variable renewable generation which builds on existing industry practices for frequency control after unexpected loss of a large amount of generation. The report introduces a set of metrics or tools for measuring the adequacy of frequency response within an interconnection. Based on the concept of the frequency nadir, these metrics take advantage of new information gathering and processing capabilities that system operators are developing for wide-area situational awareness. Primary frequency response is the leading metric that will be used by this report to assess the adequacy of primary frequency control reserves necessary to ensure reliable operation. It measures what is needed to arrest frequency decline (i.e., to establish frequency nadir) at a frequency higher than the highest set point for under-frequency load shedding within an interconnection. These metrics can be used to guide the reliable operation of an interconnection under changing circumstances.

  5. Evaluation of Representative Smart Grid Investment Grant Project Technologies: Distributed Generation

    SciTech Connect (OSTI)

    Singh, Ruchi; Vyakaranam, Bharat GNVSR

    2012-02-14T23:59:59.000Z

    This document is one of a series of reports estimating the benefits of deploying technologies similar to those implemented on the Smart Grid Investment Grant (SGIG) projects. Four technical reports cover the various types of technologies deployed in the SGIG projects, distribution automation, demand response, energy storage, and renewables integration. A fifth report in the series examines the benefits of deploying these technologies on a national level. This technical report examines the impacts of addition of renewable resources- solar and wind in the distribution system as deployed in the SGIG projects.

  6. Time series power flow analysis for distribution connected PV generation.

    SciTech Connect (OSTI)

    Broderick, Robert Joseph; Quiroz, Jimmy Edward; Ellis, Abraham; Reno, Matthew J. [Georgia Institute of Technology, Atlanta, GA; Smith, Jeff [Electric Power Research Institute, Knoxville, TN; Dugan, Roger [Electric Power Research Institute, Knoxville, TN

    2013-01-01T23:59:59.000Z

    Distributed photovoltaic (PV) projects must go through an interconnection study process before connecting to the distribution grid. These studies are intended to identify the likely impacts and mitigation alternatives. In the majority of the cases, system impacts can be ruled out or mitigation can be identified without an involved study, through a screening process or a simple supplemental review study. For some proposed projects, expensive and time-consuming interconnection studies are required. The challenges to performing the studies are twofold. First, every study scenario is potentially unique, as the studies are often highly specific to the amount of PV generation capacity that varies greatly from feeder to feeder and is often unevenly distributed along the same feeder. This can cause location-specific impacts and mitigations. The second challenge is the inherent variability in PV power output which can interact with feeder operation in complex ways, by affecting the operation of voltage regulation and protection devices. The typical simulation tools and methods in use today for distribution system planning are often not adequate to accurately assess these potential impacts. This report demonstrates how quasi-static time series (QSTS) simulation and high time-resolution data can be used to assess the potential impacts in a more comprehensive manner. The QSTS simulations are applied to a set of sample feeders with high PV deployment to illustrate the usefulness of the approach. The report describes methods that can help determine how PV affects distribution system operations. The simulation results are focused on enhancing the understanding of the underlying technical issues. The examples also highlight the steps needed to perform QSTS simulation and describe the data needed to drive the simulations. The goal of this report is to make the methodology of time series power flow analysis readily accessible to utilities and others responsible for evaluating potential PV impacts.

  7. North American Renewables Registry (Multiple States)

    Broader source: Energy.gov [DOE]

    The North American Renewables Registry (NAR) provides a Web-based platform trusted to create, track, and manage renewable energy certificate (REC) origination for clean generation facilities and...

  8. Midwest Renewable Energy Tracking System (Multiple States)

    Broader source: Energy.gov [DOE]

    The Midwest Renewable Energy Tracking System (M-RETS®) tracks renewable energy generation in participating States and Provinces and assists in verifying compliance with individual state/provincial...

  9. Renewable Energy Training | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    to help Federal agencies understand and meet Federal energy management requirements with renewable energy technologies. Distributed-Scale Renewable Energy Projects: From Planning...

  10. PhotoVoltaic distributed generation for Lanai power grid real-time simulation and control integration scenario.

    SciTech Connect (OSTI)

    Robinett, Rush D., III; Kukolich, Keith (Opal RT Technologies, Montreal, Quebec, Canada); Wilson, David Gerald; Schenkman, Benjamin L.

    2010-06-01T23:59:59.000Z

    This paper discusses the modeling, analysis, and testing in a real-time simulation environment of the Lanai power grid system for the integration and control of PhotoVoltaic (PV) distributed generation. The Lanai Island in Hawaii is part of the Hawaii Clean Energy Initiative (HCEI) to transition to 30% renewable green energy penetration by 2030. In Lanai the primary loads come from two Castle and Cook Resorts, in addition to residential needs. The total peak load profile is 12470 V, 5.5 MW. Currently there are several diesel generators that meet these loading requirements. As part of the HCEI, Lanai has initially installed 1.2 MW of PV generation. The goal of this study has been to evaluate the impact of the PV with respect to the conventional carbon-based diesel generation in real time simulation. For intermittent PV distributed generation, the overall stability and transient responses are investigated. A simple Lanai 'like' model has been developed in the Matlab/Simulink environment (see Fig. 1) and to accommodate real-time simulation of the hybrid power grid system the Opal-RT Technologies RT-Lab environment is used. The diesel generators have been modelled using the SimPowerSystems toolbox swing equations and a custom Simulink module has been developed for the High level PV generation. All of the loads have been characterized primarily as distribution lines with series resistive load banks with one VAR load bank. Three-phase faults are implemented for each bus. Both conventional and advanced control architectures will be used to evaluate the integration of the PV onto the current power grid system. The baseline numerical results include the stable performance of the power grid during varying cloud cover (PV generation ramping up/down) scenarios. The importance of assessing the real-time scenario is included.

  11. The Effect of Distributed Energy Resource Competition with Central Generation

    SciTech Connect (OSTI)

    Hadley, SW

    2003-12-10T23:59:59.000Z

    Distributed Energy Resource (DER) has been touted as a clean and efficient way to generate electricity at end-use sites, potentially allowing the exhaust heat to be put to good use as well. However, despite its environmental acceptability compared to many other types of generation, it has faced some disapproval because it may displace other, cleaner generation technologies. The end result could be more pollution than if the DER were not deployed. On the other hand, the DER may be competing against older power plants. If the DER is built then these other plants may be retired sooner, reducing their emissions. Or it may be that DER does not directly compete against either new or old plant capacity at the decision-maker level, and increased DER simply reduces the amount of time various plants operate. The key factor is what gets displaced if DER is added. For every kWh made by DER a kWh (or more with losses) of other production is not made. If enough DER is created, some power plants will get retired or not get built so not only their production but their capacity is displaced. Various characteristics of the power system in a region will influence how DER impacts the operation of the grid. The growth in demand in the region may influence whether new plants are postponed or old plants retired. The generation mix, including the fuel types, efficiencies, and emission characteristics of the plants in the region will factor into the overall competition. And public policies such as ease of new construction, emissions regulations, and fuel availability will also come into consideration.

  12. Regulatory Review and Barriers for the Electricity Supply System for Distributed

    E-Print Network [OSTI]

    , Technology assessment. I. INTRODUCTION In recent years, distributed generation (DG) has received increasing from renewable energy sources (RES) and combined heat and power (CHP) should be considered

  13. SOLID OXIDE FUEL CELL HYBRID SYSTEM FOR DISTRIBUTED POWER GENERATION

    SciTech Connect (OSTI)

    Kurt Montgomery; Nguyen Minh

    2003-08-01T23:59:59.000Z

    This report summarizes the work performed by Honeywell during the October 2001 to December 2001 reporting period under Cooperative Agreement DE-FC26-01NT40779 for the U. S. Department of Energy, National Energy Technology Laboratory (DOE/NETL) entitled ''Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation''. The main objective of this project is to develop and demonstrate the feasibility of a highly efficient hybrid system integrating a planar Solid Oxide Fuel Cell (SOFC) and a turbogenerator. The conceptual and demonstration system designs were proposed and analyzed, and these systems have been modeled in Aspen Plus. Work has also started on the assembly of dynamic component models and the development of the top-level controls requirements for the system. SOFC stacks have been fabricated and performance mapping initiated.

  14. Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation

    SciTech Connect (OSTI)

    Nguyen Minh

    2002-03-31T23:59:59.000Z

    This report summarizes the work performed by Honeywell during the January 2002 to March 2002 reporting period under Cooperative Agreement DE-FC26-01NT40779 for the U. S. Department of Energy, National Energy Technology Laboratory (DOE/NETL) entitled ''Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation''. The main objective of this project is to develop and demonstrate the feasibility of a highly efficient hybrid system integrating a planar Solid Oxide Fuel Cell (SOFC) and a turbogenerator. For this reporting period the following activities have been carried out: {lg_bullet} Conceptual system design trade studies were performed {lg_bullet} System-level performance model was created {lg_bullet} Dynamic control models are being developed {lg_bullet} Mechanical properties of candidate heat exchanger materials were investigated {lg_bullet} SOFC performance mapping as a function of flow rate and pressure was completed

  15. SOLID OXIDE FUEL CELL HYBRID SYSTEM FOR DISTRIBUTED POWER GENERATION

    SciTech Connect (OSTI)

    Unknown

    2002-03-01T23:59:59.000Z

    This report summarizes the work performed by Honeywell during the July 2001 to September 2001 reporting period under Cooperative Agreement DE-FC26-01NT40779 for the U. S. Department of Energy, National Energy Technology Laboratory (DOE/NETL) entitled ''Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation''. The main objective of this project is to develop and demonstrate the feasibility of a highly efficient hybrid system integrating a planar Solid Oxide Fuel Cell (SOFC) and a turbogenerator. An internal program kickoff was held at Honeywell in Torrance, CA. The program structure was outlined and the overall technical approach for the program was presented to the team members. Detail program schedules were developed and detailed objectives were defined. Initial work has begun on the system design and pressurized SOFC operation.

  16. Renewable Energy Sales Tax Exemption

    Broader source: Energy.gov [DOE]

    Utah exempts the purchase or lease of equipment used to generate electricity from renewable resources from the state sales tax. Eligible purchases or leases must be made for or by a renewable...

  17. Renewable Systems Interconnection: Executive Summary

    SciTech Connect (OSTI)

    Kroposki, B.; Margolis, R.; Kuswa, G.; Torres, J.; Bower, W.; Key, T.; Ton, D.

    2008-02-01T23:59:59.000Z

    The U.S. Department of Energy launched the Renewable Systems Interconnection (RSI) study in 2007 to address the challenges to high penetrations of distributed renewable energy technologies. The RSI study consists of 14 additional reports.

  18. Investment and Upgrade in Distributed Generation under Uncertainty

    SciTech Connect (OSTI)

    Siddiqui, Afzal; Maribu, Karl

    2008-08-18T23:59:59.000Z

    The ongoing deregulation of electricity industries worldwide is providing incentives for microgrids to use small-scale distributed generation (DG) and combined heat and power (CHP) applications via heat exchangers (HXs) to meet local energy loads. Although the electric-only efficiency of DG is lower than that of central-station production, relatively high tariff rates and the potential for CHP applications increase the attraction of on-site generation. Nevertheless, a microgrid contemplatingthe installation of gas-fired DG has to be aware of the uncertainty in the natural gas price. Treatment of uncertainty via real options increases the value of the investment opportunity, which then delays the adoption decision as the opportunity cost of exercising the investment option increases as well. In this paper, we take the perspective of a microgrid that can proceed in a sequential manner with DG capacity and HX investment in order to reduce its exposure to risk from natural gas price volatility. In particular, with the availability of the HX, the microgrid faces a tradeoff between reducing its exposure to the natural gas price and maximising its cost savings. By varying the volatility parameter, we find that the microgrid prefers a direct investment strategy for low levels of volatility and a sequential one for higher levels of volatility.

  19. A Model of U.S. Commercial Distributed Generation Adoption

    SciTech Connect (OSTI)

    LaCommare, Kristina Hamachi; Ryan Firestone; Zhou, Nan; Maribu,Karl; Marnay, Chris

    2006-01-10T23:59:59.000Z

    Small-scale (100 kW-5 MW) on-site distributed generation (DG) economically driven by combined heat and power (CHP) applications and, in some cases, reliability concerns will likely emerge as a common feature of commercial building energy systems over the next two decades. Forecasts of DG adoption published by the Energy Information Administration (EIA) in the Annual Energy Outlook (AEO) are made using the National Energy Modeling System (NEMS), which has a forecasting module that predicts the penetration of several possible commercial building DG technologies over the period 2005-2025. NEMS is also used for estimating the future benefits of Department of Energy research and development used in support of budget requests and management decisionmaking. The NEMS approach to modeling DG has some limitations, including constraints on the amount of DG allowed for retrofits to existing buildings and a small number of possible sizes for each DG technology. An alternative approach called Commercial Sector Model (ComSeM) is developed to improve the way in which DG adoption is modeled. The approach incorporates load shapes for specific end uses in specific building types in specific regions, e.g., cooling in hospitals in Atlanta or space heating in Chicago offices. The Distributed Energy Resources Customer Adoption Model (DER-CAM) uses these load profiles together with input cost and performance DG technology assumptions to model the potential DG adoption for four selected cities and two sizes of five building types in selected forecast years to 2022. The Distributed Energy Resources Market Diffusion Model (DER-MaDiM) is then used to then tailor the DER-CAM results to adoption projections for the entire U.S. commercial sector for all forecast years from 2007-2025. This process is conducted such that the structure of results are consistent with the structure of NEMS, and can be re-injected into NEMS that can then be used to integrate adoption results into a full forecast.

  20. Central power generation versus distributed generation e An air quality assessment in the South Coast Air Basin of California

    E-Print Network [OSTI]

    Dabdub, Donald

    Keywords: Distributed generation Central generation Air quality modeling Reactivity a b s t r a c by the widespread installation of many stationary power generators close to the point of electricity use within from which electricity must be transmitted to end users. However, increasing electricity demand

  1. Accounting for fuel price risk when comparing renewable to gas-fired generation: the role of forward natural gas prices

    E-Print Network [OSTI]

    Bolinger, Mark; Wiser, Ryan; Golove, William

    2004-01-01T23:59:59.000Z

    Profiles of Renewable and Natural Gas Electricity Contracts:Price Risk: Using Forward Natural Gas Prices Instead of Gas2001). “Which way the natural gas price: an attempt to

  2. Distributed Generation Investment by a Microgrid under Uncertainty

    E-Print Network [OSTI]

    Siddiqui, Afzal

    2008-01-01T23:59:59.000Z

    Cost of Natural Gas Generation, p Figure 6. Normalised NetCost of Natural Gas Generation, p Figure 7. Wait InvestCost of Natural Gas Generation (US$/kWh e ), C Figure 8.

  3. Air Quality Impact of Distributed Generation of Electricity

    E-Print Network [OSTI]

    Jing, Qiguo

    2011-01-01T23:59:59.000Z

    of the near source air quality impact of distributedDabdub, D. , 2003. Urban Air quality impacts of distributedDabdub, D. , 2004. Urban Air quality impacts of distributed

  4. New Renewable 1 Emerging Renewables

    E-Print Network [OSTI]

    Renewable Facilities disbursements include $6 million for the Agriculture Biomass-to-Energy Program. 5New Renewable Facilities 1 Emerging Renewables 2,3 Existing Renewable Facilities 4 Consumer,000,000)$ Appropriations Appropriation for PACE Reserve program per SB 77 (2010) 11 (50,000,000)$ RENEWABLE ENERGY PROGRAM

  5. Method and apparatus for anti-islanding protection of distributed generations

    DOE Patents [OSTI]

    Ye, Zhihong; John, Vinod; Wang, Changyong; Garces, Luis Jose; Zhou, Rui; Li, Lei; Walling, Reigh Allen; Premerlani, William James; Sanza, Peter Claudius; Liu, Yan; Dame, Mark Edward

    2006-03-21T23:59:59.000Z

    An apparatus for anti-islanding protection of a distributed generation with respect to a feeder connected to an electrical grid is disclosed. The apparatus includes a sensor adapted to generate a voltage signal representative of an output voltage and/or a current signal representative of an output current at the distributed generation, and a controller responsive to the signals from the sensor. The controller is productive of a control signal directed to the distributed generation to drive an operating characteristic of the distributed generation out of a nominal range in response to the electrical grid being disconnected from the feeder.

  6. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-08-01T23:59:59.000Z

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in a Power Systems Engineering Research Center webinar on September 4, 2012.

  7. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M.; Mai, T.

    2012-08-01T23:59:59.000Z

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in an Union of Concerned Scientists webinar on June 12, 2012.

  8. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-08-01T23:59:59.000Z

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. This presentation was presented in a Wind Powering America webinar on August 15, 2012 and is now available through the Wind Powering America website.

  9. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M. M.

    2012-08-01T23:59:59.000Z

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in a webinar given by the California Energy Commission.

  10. HYBRID CONTROL OF DISTRIBUTED GENERATORS CONNECTED TO WEAK RURAL NETWORKS TO MITIGATE VOLTAGE VARIATION

    E-Print Network [OSTI]

    Harrison, Gareth

    thermal power plants will increase the total and proportion of capacity of Distributed Generation (DG@iee.org; Robin.Wallace@ed.ac.uk ABSTRACT Distributed generators are normally operated in automatic power factor-constrained bi- directional power flow may cause unacceptable voltage fluctuations that would cause generator

  11. Automated di/dt Stressmark Generation for Microprocessor Power Distribution Networks

    E-Print Network [OSTI]

    John, Lizy Kurian

    Automated di/dt Stressmark Generation for Microprocessor Power Distribution Networks Youngtaek Kim for automated di/dt stressmark generation to test maximum voltage droop in a microprocessor power distribution and typical benchmarks in experiments covering three micro-processor architectures and five power distribution

  12. Renewal Application

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Renewal Individual Permit Renewal Application The Permit expires March 31, 2014 and existing permit conditions will be in effect until a new permit is issued. The Permittees...

  13. Fuel cell power plants in a distributed generator application

    SciTech Connect (OSTI)

    Smith, M.J. [International Fuel Cells Corp., South Windsor, CT (United States)

    1996-12-31T23:59:59.000Z

    ONSI`s (a subsidiary of International Fuel Cells Corporation) world wide fleet of 200-kW PC25{trademark} phosphoric acid fuel cell power plants which began operation early in 1992 has shown excellent performance and reliability in over 1 million hours of operation. This experience has verified the clean, quiet, reliable operation of the PC25 and confirmed its application as a distributed generator. Continuing product development efforts have resulted in a one third reduction of weight and volume as well as improved installation and operating characteristics for the PC25 C model. Delivery of this unit began in 1995. International Fuel Cells (IFC) continues its efforts to improve product design and manufacturing processes. This progress has been sustained at a compounded rate of 10 percent per year since the late 1980`s. These improvements will permit further reductions in the initial cost of the power plant and place increased emphasis on market development as the pacing item in achieving business benefits from the PC25 fuel cell. Derivative product opportunities are evolving with maturation of the technologies in a commercial environment. The recent announcement of Praxair, Inc., and IFC introducing a non-cryogenic hydrogen supply system utilizing IFC`s steam reformer is an example. 11 figs.

  14. Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation

    E-Print Network [OSTI]

    Eto, Joseph H.

    2011-01-01T23:59:59.000Z

    of the Impact of Wind Generation on System Frequency2008. Analysis of Wind Generation Impact on ERCOT Ancillarywith Increased Wind Generation. LBNL-XXXX. Berkeley:

  15. Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation

    E-Print Network [OSTI]

    Eto, Joseph H.

    2011-01-01T23:59:59.000Z

    North America Dynamic Wind Generator Modeling Update, Basedperformed by the WECC Wind Generator Modeling Group and theand in particular, wind generators are the primary resources

  16. Renewable Portfolio Standard

    E-Print Network [OSTI]

    Hydroelectric Project as its original baseline eligible renewable energy resource project, and MID also hydroelectric unit, the Stone Drop Electric Generation Station (the Stone Drop Station). The Stone Drop

  17. Greenhouse Gas Abatement with Distributed Generation in California's Commercial Buildings

    SciTech Connect (OSTI)

    Stadler, Michael; Marnay, Chris; Cardoso, Goncalo; Megel, Olivier; Siddiqui, Afzal; Lai, Judy

    2009-08-15T23:59:59.000Z

    Lawrence Berkeley National Laboratory (LBL) is working with the California Energy Commission (CEC) to determine the role of distributed generation (DG) in greenhouse gas reductions. The impact of DG on large industrial sites is well known, and mostly, the potentials are already harvested. In contrast, little is known about the impact of DG on commercial buildings with peak electric loads ranging from 100 kW to 5 MW. We examine how DG with combined heat and power (CHP) may be implemented within the context of a cost minimizing microgrid that is able to adopt and operate various smart energy technologies, such as thermal and photovoltaic (PV) on-site generation, heat exchangers, solar thermal collectors, absorption chillers, and storage systems. We use a mixed-integer linear program (MILP) that has the minimization of a site's annual energy costs as objective. Using 138 representative commercial sites in California (CA) with existing tariff rates and technology data, we find the greenhouse gas reduction potential for California's commercial sector. This paper shows results from the ongoing research project and finished work from a two year U.S. Department of Energy research project. To show the impact of the different technologies on CO2 emissions, several sensitivity runs for different climate zones within CA with different technology performance expectations for 2020 were performed. The considered sites can contribute between 1 Mt/a and 1.8 Mt/a to the California Air Resources Board (CARB) goal of 6.7Mt/a CO2 abatement potential in 2020. Also, with lower PV and storage costs as well as consideration of a CO2 pricing scheme, our results indicate that PV and electric storage adoption can compete rather than supplement each other when the tariff structure and costs of electricity supply have been taken into consideration. To satisfy the site's objective of minimizing energy costs, the batteries will be charged also by CHP systems during off-peak and mid-peak hours and not only by PV during sunny on-peak hours.

  18. Methodology The electricity generation and distribution network in the Western United States is

    E-Print Network [OSTI]

    Hall, Sharon J.

    Methodology The electricity generation and distribution network in the Western United States is comprised of power plants, electric utilities, electrical transformers, transmission and distribution infrastructure, etc. We conceptualize the system as a transportation network with resources (electricity

  19. Micro-grid operation of inverter based distributed generation with voltage and frequency dependent loads

    E-Print Network [OSTI]

    Zeineldin, H. H.

    Distribution systems are experiencing increasing penetration of distributed generation (DG). One attractive option is to use the available DG capacity during utility outages by forming planned micro-grids. Load sharing ...

  20. Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation

    SciTech Connect (OSTI)

    Bolinger, Mark; Wiser, Ryan; Golove, William

    2003-08-13T23:59:59.000Z

    Against the backdrop of increasingly volatile natural gas prices, renewable energy resources, which by their nature are immune to natural gas fuel price risk, provide a real economic benefit. Unlike many contracts for natural gas-fired generation, renewable generation is typically sold under fixed-price contracts. Assuming that electricity consumers value long-term price stability, a utility or other retail electricity supplier that is looking to expand its resource portfolio (or a policymaker interested in evaluating different resource options) should therefore compare the cost of fixed-price renewable generation to the hedged or guaranteed cost of new natural gas-fired generation, rather than to projected costs based on uncertain gas price forecasts. To do otherwise would be to compare apples to oranges: by their nature, renewable resources carry no natural gas fuel price risk, and if the market values that attribute, then the most appropriate comparison is to the hedged cost of natural gas-fired generation. Nonetheless, utilities and others often compare the costs of renewable to gas-fired generation using as their fuel price input long-term gas price forecasts that are inherently uncertain, rather than long-term natural gas forward prices that can actually be locked in. This practice raises the critical question of how these two price streams compare. If they are similar, then one might conclude that forecast-based modeling and planning exercises are in fact approximating an apples-to-apples comparison, and no further consideration is necessary. If, however, natural gas forward prices systematically differ from price forecasts, then the use of such forecasts in planning and modeling exercises will yield results that are biased in favor of either renewable (if forwards < forecasts) or natural gas-fired generation (if forwards > forecasts). In this report we compare the cost of hedging natural gas price risk through traditional gas-based hedging instruments (e.g., futures, swaps, and fixed-price physical supply contracts) to contemporaneous forecasts of spot natural gas prices, with the purpose of identifying any systematic differences between the two. Although our data set is quite limited, we find that over the past three years, forward gas prices for durations of 2-10 years have been considerably higher than most natural gas spot price forecasts, including the reference case forecasts developed by the Energy Information Administration (EIA). This difference is striking, and implies that resource planning and modeling exercises based on these forecasts over the past three years have yielded results that are biased in favor of gas-fired generation (again, presuming that long-term stability is desirable). As discussed later, these findings have important ramifications for resource planners, energy modelers, and policy-makers.

  1. Dynamic Analysis of Hybrid Energy Systems under Flexible Operation and Variable Renewable Generation -- Part I: Dynamic Performance Analysis and Part II: Dynamic Cost

    SciTech Connect (OSTI)

    Humberto E. Garcia; Amit Mohanty; Wen-Chiao Lin; Robert S. Cherry

    2013-04-01T23:59:59.000Z

    Dynamic analysis of hybrid energy systems (HES) under flexible operation and variable renewable generation is considered in order to better understand various challenges and opportunities associated with the high system variability arising from the integration of renewable energy into the power grid. Unique consequences are addressed by devising advanced HES solutions in which multiple forms of energy commodities, such as electricity and chemical products, may be exchanged. Dynamic models of various unit operations are developed and integrated within two different HES options. One HES option, termed traditional, produces electricity only and consists of a primary heat generator (PHG) (e.g., a small modular reactor), a steam turbine generator, a wind farm, and a battery storage. The other HES option, termed advanced, includes not only the components present in the traditional option but also a chemical plant complex to repurpose excess energy for non-electricity services, such as for the production of chemical goods (e.g., transportation fuel). In either case, a given HES is connected to the power grid at a point of common coupling and requested to deliver a certain electricity generation profile as dictated by a regional power grid operator based on a predicted demand curve. Dynamic analysis of these highly-coupled HES are performed to identify their key dynamical properties and limitations and to prescribe solutions for best managing and mitigating the high variability introduced from incorporating renewable energy into the energy mix. A comparative dynamic cost analysis is also conducted to determine best HES options. The cost function includes a set of metrics for computing fixed costs, such as fixed operations and maintenance (O&M) and overnight capital costs, and also variable operational costs, such as cost of variability, variable O&M cost, and cost of environmental impact, together with revenues. Assuming different options for implementing PHG (e.g., natural gas, coal, nuclear), preliminary results identify the level of renewable penetration at which a given advanced HES option (e.g., a nuclear hybrid) becomes increasingly more economical than a traditional electricity-only generation solution. Conditions are also revealed under which carbon resources may be better utilized as carbon sources for chemical production rather than as combustion material for electricity generation.

  2. Software-Based Challenges of Developing the Future Distribution Grid

    E-Print Network [OSTI]

    Stewart, Emma

    2014-01-01T23:59:59.000Z

    Golden  CO:  National  Renewable  Energy  Laboratory  energy  resources.  IET   Renewable  Power  Generation,  Golden  CO:  National  Renewable  Energy  Laboratory  

  3. Enhanced geothermal systems (EGS) with CO2 as heat transmission fluid--A scheme for combining recovery of renewable energy with geologic storage of CO2

    E-Print Network [OSTI]

    Pruess, K.

    2010-01-01T23:59:59.000Z

    Approach for Generating Renewable Energy with SimultaneousCombining Recovery of Renewable Energy with Geologic Storage

  4. Power marketing and renewable energy

    SciTech Connect (OSTI)

    Fang, J.M.

    1997-09-01T23:59:59.000Z

    Power marketing refers to wholesale and retail transactions of electric power made by companies other than public power entities and the regulated utilities that own the generation and distribution lines. The growth in power marketing has been a major development in the electric power industry during the last few years, and power marketers are expected to realize even more market opportunities as electric industry deregulation proceeds from wholesale competition to retail competition. This Topical Issues Brief examines the nature of the power marketing business and its relationship with renewable power. The information presented is based on interviews conducted with nine power marketing companies, which accounted for almost 54% of total power sales by power marketers in 1995. These interviews provided information on various viewpoints of power marketers, their experience with renewables, and their respective outlooks for including renewables in their resource portfolios. Some basic differences exist between wholesale and retail competition that should be recognized when discussing power marketing and renewable power. At the wholesale level, the majority of power marketers stress the commodity nature of electricity. The primary criteria for developing resource portfolios are the same as those of their wholesale customers: the cost and reliability of power supplies. At the retail level, electricity may be viewed as a product that includes value-added characteristics or services determined by customer preferences.

  5. Distributed Generation Investment by a Microgrid Under Uncertainty

    E-Print Network [OSTI]

    Siddiqui, Afzal; Marnay, Chris

    2006-01-01T23:59:59.000Z

    electricity markets , PhD thesis, University of California, Berkeley, CA, USA,USA, 1994. Joskow PL, Productivity growth and technical change in the generation of electricity,

  6. Future of Distributed Generation and IEEE 1547 (Presentation...

    Office of Scientific and Technical Information (OSTI)

    new boundary issues and requirements, islanding issues, and how it impacts distributed wind. times redirected to final destination ShortURL Code Published Current state Most...

  7. Future of Distributed Generation and IEEE 1547 (Presentation)

    SciTech Connect (OSTI)

    Preus, R.

    2014-06-01T23:59:59.000Z

    This presentation discusses the background on IEEE 1547, including its purpose, changes, new boundary issues and requirements, islanding issues, and how it impacts distributed wind.

  8. Dynamic load Variation and Stability Analysis in Distribution Networks with Distributed Generators

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    to the electric energy consumers. Demand for electricity is growing with great rapidity as for nations modernize and economies develop. Due to this development, there is an increased demand in electricity. The increased demand for electricity has outstripped that for other forms of energy. Renewable energy which comes from

  9. Control and Analysis of Droop and Reverse Droop Controllers for Distributed Generations

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    Control and Analysis of Droop and Reverse Droop Controllers for Distributed Generations Dan Wu1 University, P. R. China ftang_nego@126.com Abstract--This paper addresses control and analysis of droop and reverse droop control for distributed generations (DG). The droop control is well known applied

  10. Self-triggered Communication Enabled Control of Distributed Generation in Microgrids

    E-Print Network [OSTI]

    Mazumder, Sudip K.

    1 Self-triggered Communication Enabled Control of Distributed Generation in Microgrids Muhammad. I. INTRODUCTION Effective integration of multiple distributed generation (DG) units in microgrids. Conventionally the secondary control in a microgrid is based on a centralized control structure using periodic

  11. 1170 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 28, NO. 2, MAY 2013 Independent Distributed Generation Planning

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    -scale electric generation facilities to participate in distributed generation (DG) with few requirements on power-purchase1170 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 28, NO. 2, MAY 2013 Independent Distributed is maximized via procuring power from DGs and the market at a minimum expense. On the other hand, each DG unit

  12. Power Flow Analysis Algorithm for Islanded LV Microgrids Including Distributed Generator Units with

    E-Print Network [OSTI]

    Chaudhary, Sanjay

    Power Flow Analysis Algorithm for Islanded LV Microgrids Including Distributed Generator Units With larger portion of growing electricity demand which is being fed through distributed generation (DG power system. Being able to operate in both grid-connected and islanded mode, a microgrid manages

  13. Reactive power management of distribution networks with wind generation for improving voltage stability

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    -loadability Reactive power margin Wind turbine a b s t r a c t This paper proposes static and dynamic VAR planningReactive power management of distribution networks with wind generation for improving voltage February 2013 Available online Keywords: Composite load Distributed generation D-STATCOM Q

  14. A SURVEY OF STATE-LEVEL COST ESTIMATES OF RENEWABLES PORTFOLIO STANDARDS

    E-Print Network [OSTI]

    Barbose, Galen

    2014-01-01T23:59:59.000Z

    Energy Efficiency and Renewable Energy (Solar TechnologiesRPS costs, per unit of renewable energy generation, rangedFlores-Espino National Renewable Energy Laboratory 15013

  15. Human dimensions perspectives on the impacts of coastal zone marine renewable energy

    E-Print Network [OSTI]

    Pomeroy, Caroline; Conway, Flaxen; Hall-Arber, Madeleine

    2013-01-01T23:59:59.000Z

    between offshore renewable energy and existing uses on thecoastal zone marine renewable energy generation. REFERENCESOuter Continental Shelf Renewable Energy Space-Use Conflicts

  16. Human dimensions perspectives on the impacts of coastal zone marine renewable energy

    E-Print Network [OSTI]

    Pomeroy, Caroline; Conway, Flaxen; Hall-Arber, Madeleine

    2013-01-01T23:59:59.000Z

    coastal zone marine renewable energy generation. REFERENCESOuter Continental Shelf Renewable Energy Space-Use ConflictsOF COASTAL ZONE MARINE RENEWABLE ENERGY Caroline Pomeroy,

  17. OPTIMAL DISTRIBUTED POWER GENERATION UNDER NETWORK LOAD CONSTRAINTS,

    E-Print Network [OSTI]

    Frank, Jason

    of novel components for decentral power generation (solar panels, small wind turbines and heat pumps). This gives rise to the question how many units of each type (solar panel, small wind turbine or central-producers. Decentralized Power Generation (DPG) refers to an electric power source such as solar, wind or combined heat

  18. Community Renewable Energy Success Stories Webinar: Renewable...

    Office of Environmental Management (EM)

    Community Renewable Energy Success Stories Webinar: Renewable Energy Parks (text version) Community Renewable Energy Success Stories Webinar: Renewable Energy Parks (text version)...

  19. Fuel Cell Power Model Version 2: Startup Guide, System Designs, and Case Studies. Modeling Electricity, Heat, and Hydrogen Generation from Fuel Cell-Based Distributed Energy Systems

    SciTech Connect (OSTI)

    Steward, D.; Penev, M.; Saur, G.; Becker, W.; Zuboy, J.

    2013-06-01T23:59:59.000Z

    This guide helps users get started with the U.S. Department of Energy/National Renewable Energy Laboratory Fuel Cell Power (FCPower) Model Version 2, which is a Microsoft Excel workbook that analyzes the technical and economic aspects of high-temperature fuel cell-based distributed energy systems with the aim of providing consistent, transparent, comparable results. This type of energy system would provide onsite-generated heat and electricity to large end users such as hospitals and office complexes. The hydrogen produced could be used for fueling vehicles or stored for later conversion to electricity.

  20. Quantifying the Air Pollution Exposure Consequences of Distributed Electricity Generation

    E-Print Network [OSTI]

    Heath, Garvin A.; Granvold, Patrick W.; Hoats, Abigail S.; Nazaroff, William W

    2005-01-01T23:59:59.000Z

    2: L A City, DWP Valley Generating 1: Hunters Point 2: PG &E Co, Hunters Point Power 1: SDG & E Co/Kearny Mesa GT 2:Angeles ST(4) BF(2) Hunters Point San Francisco NG, Diesel

  1. March 2015 Most Viewed Documents for Power Generation And Distribution...

    Office of Scientific and Technical Information (OSTI)

    Methods for Power Distribution Systems: Final Report Tom McDermott (2010) 67 Frequency Control Concerns in the North American Electric Power System Kirby, B.J. (2003) 64 A...

  2. Random Boolean networks with number of parents generated by certain probability distributions

    E-Print Network [OSTI]

    Matache, Dora

    Random Boolean networks with number of parents generated by certain probability distributions Ray A following a Power Law distribution. Others have examined how highly connected networks use a Popularity network where the number of parents are obtained using a Power Law distribution and are connected based

  3. Renewable Diesel

    Broader source: Energy.gov (indexed) [DOE]

    Renewable Diesel Process Co-feed Renewable Oils to Diesel Hydrotreater 150-2400 psi Hydrogen, 600-800F Normal reaction is sulfur removal (HDS) At HDS Conditions Fat...

  4. Renewable Energy Sales and Use Tax Abatement

    Broader source: Energy.gov [DOE]

    The abatement applies to property used to generate electricity from renewable energy resources including solar, wind, biomass*, fuel cells, geothermal or hydro. Generation facilities must have a...

  5. Navajo Generating Station and Air Visibility Regulations: Alternatives and Impacts (Revised), Energy Analysis, NREL (National Renewable Energy Laboratory)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for Renewable Energy:Nanowire Solar541,9337, 2011 at 2:00 P.M. Next8,NatureNauruEnergy

  6. Renewables and air quality

    SciTech Connect (OSTI)

    Wooley, D.R.

    2000-08-01T23:59:59.000Z

    The US heavy reliance on fossil fuels is a central obstacle to improving air quality and preventing catastrophic climate change. To solve this problem will require a combination of financial incentives and market rules that strongly encourage development of renewable energy resources to meet electric power demand. One promising policy option is to allow renewable energy resources to directly participate in air pollution emission trading mechanisms. Currently, the clean air benefits of renewable energy generally go unrecognized by regulators, under-appreciated by consumers and uncompensated by markets. Renewable energy is a key clean air alternative to conventional electricity generation, and the development of renewables could be stimulated by changes to the Clean Air Act's emissions trading programs. As Congress revisits clean air issues over the next several years, renewable energy representatives could push for statutory changes that reward the renewable energy industry for the air quality benefits it provides. By also becoming involved in key US Environmental Protection Agency (EPA) and state rule-making cases, the renewables industry could influence the structure of emissions trading programs and strengthen one of the most persuasive arguments for wind, solar and biomass energy development.

  7. SmartGridCityTM: Plugging renewables into the

    E-Print Network [OSTI]

    - Wisconsin 3.4 million electricity customers 1.9 million natural gas customers Traditionally regulated #12 response Limited real-time data Reactive outage management system #12;5 How it works: Adding Renewable Widespread distributed generation Plug-in hybrid electric vehicles #12;6 Longer-term hypotheses Can we

  8. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M. M.

    2012-08-01T23:59:59.000Z

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented to the 2012 Western Conference of Public Service Commissioners, during their June, 2012, meeting. The Western Conference of Public Service Commissioners is a regional association within the National Association of Regulatory Utility Commissioners (NARUC).

  9. Distributed Generation Dispatch Optimization under VariousElectricity Tariffs

    SciTech Connect (OSTI)

    Firestone, Ryan; Marnay, Chris

    2007-05-01T23:59:59.000Z

    The on-site generation of electricity can offer buildingowners and occupiers financial benefits as well as social benefits suchas reduced grid congestion, improved energy efficiency, and reducedgreenhouse gas emissions. Combined heat and power (CHP), or cogeneration,systems make use of the waste heat from the generator for site heatingneeds. Real-time optimal dispatch of CHP systems is difficult todetermine because of complicated electricity tariffs and uncertainty inCHP equipment availability, energy prices, and system loads. Typically,CHP systems use simple heuristic control strategies. This paper describesa method of determining optimal control in real-time and applies it to alight industrial site in San Diego, California, to examine: 1) the addedbenefit of optimal over heuristic controls, 2) the price elasticity ofthe system, and 3) the site-attributable greenhouse gas emissions, allunder three different tariff structures. Results suggest that heuristiccontrols are adequate under the current tariff structure and relativelyhigh electricity prices, capturing 97 percent of the value of thedistributed generation system. Even more value could be captured bysimply not running the CHP system during times of unusually high naturalgas prices. Under hypothetical real-time pricing of electricity,heuristic controls would capture only 70 percent of the value ofdistributed generation.

  10. Distributed Generation Investment by a Microgrid under Uncertainty++++ Afzal Siddiqui

    E-Print Network [OSTI]

    Guillas, Serge

    , CA 94720-8163, USA, c_marnay@lbl.gov ABSTRACT. This paper examines a California-based microgrid-term natural gas generation cost is stochastic, we initially assume that the microgrid may purchase electricity is not attractive. By allowing the electricity price to be stochastic, we next determine an investment threshold

  11. Optimal distributed power generation under network load constraints

    E-Print Network [OSTI]

    Utrecht, Universiteit

    wind turbines and heat pumps). This gives rise to the question how many units of each type (solar panel, mainly because of the development of novel components for decentral power generation (solar panels, small (DPG) refers to an electric power source such as solar, wind or combined heat power (CHP) connected

  12. Distributed Power Generation: Requirements and Recommendations for an ICT Architecture

    E-Print Network [OSTI]

    Appelrath, Hans-Jürgen

    . In the future of energy markets, the distributed energy production through wind and hydroelectric power plants. Some of these are sustainable (wind and hydroelectric power plants, solar cells), some are controllable, one has to distinguish between two in principle different products: consumption power and balance

  13. Study and Development of Anti-Islanding Control for Synchronous Machine-Based Distributed Generators: November 2001--March 2004

    SciTech Connect (OSTI)

    Ye, Z.

    2006-03-01T23:59:59.000Z

    This report summarizes the study and development of new active anti-islanding control schemes for synchronous machine-based distributed generators, including engine generators and gas turbines.

  14. The Value of Distributed Solar Electric Generation to San Antonio

    SciTech Connect (OSTI)

    Jones, Nic [Solar San Antonio, TX (United States); Norris, Ben [Clean Power Research, Napa, CA (United States); Meyer, Lisa [City of San Antonio, TX (United States)

    2013-02-14T23:59:59.000Z

    This report presents an analysis of value provided by grid-connected, distributed PV in San Antonio from a utility perspective. The study quantified six value components, summarized in Table ES- 1. These components represent the benefits that accrue to the utility, CPS Energy, in accepting solar onto the grid. This analysis does not treat the compensation of value, policy objectives, or cost-effectiveness from the retail consumer perspective.

  15. Investigation of anti-islanding schemes for utility interconnection of distributed fuel cell powered generations 

    E-Print Network [OSTI]

    Jeraputra, Chuttchaval

    2006-04-12T23:59:59.000Z

    The rapid emergence of distributed fuel cell powered generations (DFPGs) operating in parallel with utility has brought a number of technical concerns as more DFPGs are connected to utility grid. One of the most challenging ...

  16. Applying epoch-era analysis for homeowner selection of distributed generation power systems

    E-Print Network [OSTI]

    Piña, Alexander L

    2014-01-01T23:59:59.000Z

    The current shift from centralized energy generation to a more distributed model has opened a number of choices for homeowners to provide their own power. While there are a number of systems to purchase, there are no tools ...

  17. High Penetration Solar Distributed Generation Study on Oahu | Department of

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To:Department of Energy CompletingPresentedGeneration FY13

  18. Distributed Generation System Characteristics and Costs in the Buildings Sector

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001)gasoline353/06) 2Yonthly Energy : bDistributed

  19. Distributed Generation Study/Harbec Plastics | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE FacilityDimondale, Michigan:Emerling Farm < Distributed

  20. Distributed Generation Study/Hudson Valley Community College | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE FacilityDimondale, Michigan:Emerling Farm < DistributedInformation

  1. Velocity distribution measurements in atomic beams generated using laser induced back-ablation

    E-Print Network [OSTI]

    Denning, A; Lee, S; Ammonson, M; Bergeson, S D

    2008-01-01T23:59:59.000Z

    We present measurements of the velocity distribution of calcium atoms in an atomic beam generated using a dual-stage laser back-ablation apparatus. Distributions are measured using a velocity selective Doppler time-of-flight technique. They are Boltzmann-like with rms velocities corresponding to temperatures above the melting point for calcium. Contrary to a recent report in the literature, this method does not generate a sub-thermal atomic beam.

  2. US Renewable Futures in the GCAM

    SciTech Connect (OSTI)

    Smith, Steven J.; Mizrahi, Andrew H.; Karas, Joseph F.; Nathan, Mayda

    2011-10-06T23:59:59.000Z

    This project examines renewable energy deployment in the United States using a version of the GCAM integrated assessment model with detailed a representation of renewables, the GCAM-RE. Electricity generation was modeled in four generation segments and 12-subregions. This level of regional and sectoral detail allows a more explicit representation of renewable energy generation. Wind, solar thermal power, and central solar PV plants are implemented in explicit resource classes with new intermittency parameterizations appropriate for each technology. A scenario analysis examines a range of assumptions for technology characteristics, climate policy, and long-distance transmission. We find that renewable generation levels grow over the century in all scenarios. As expected, renewable generation increases with lower renewable technology costs, more stringent climate policy, and if alternative low-carbon technology are not available. The availability of long distance transmission lowers policy costs and changes the renewable generation mix.

  3. Renewable Energy Standard (Nova Scotia, Canada)

    Broader source: Energy.gov [DOE]

    On February 1, 2007, Nova Scotia's new Renewable Energy Standards took effect. By 2013, Nova Scotia will generate at least 18.5% of the Province's electricity through renewable energy -- wind,...

  4. Fault Current Issues for Market Driven Power Systems with Distributed Generation

    E-Print Network [OSTI]

    are required for the selection of interruption devices, protective relays, and their coordination. Systems must Terms--Distributed / dispersed generation, power distri- bution, power system protection, fault in siting conventional generation ­ but, for whatever reason, protection engineers as well as transmission

  5. Distributed Load Demand Scheduling in Smart Grid to Minimize Electricity Generation Cost

    E-Print Network [OSTI]

    Pedram, Massoud

    is to perform demand side management (DSM) [1], which aims at matching the consum- ers' electricity demand between electricity consumption and generation. On the consumption side, electric demand ramps upDistributed Load Demand Scheduling in Smart Grid to Minimize Electricity Generation Cost Siyu Yue

  6. A forward microphysical model to predict the size-distribution parameters of laboratory generated (mimic)

    E-Print Network [OSTI]

    Oxford, University of

    A forward microphysical model to predict the size- distribution parameters of laboratory generated Interactions ­ Condensational Growth and Coagulation, Submitted for Indian Aerosol Science and Technology Microphysical Model for the UTLS (FAMMUS) is applied to predict the size-distribution parameters of laboratory

  7. Renewable Energy ] (

    E-Print Network [OSTI]

    Firestone, Jeremy

    pro or con, and others may wish to evaluate for themselves the size and market value of a wind regimeRenewable Energy ] (

  8. A New Approach to Mitigate the Impact of Distributed Generation on the Overcurrent Protection Scheme of Radial Distribution Feeders

    E-Print Network [OSTI]

    Funmilayo, Hamed

    2010-01-14T23:59:59.000Z

    ........................................................5 2.3. Overcurrent Protection Coordination Rules ....................................................10 2.4. Distributed Generation (DG) in Radial Feeders ..............................................15 2.5. Radial Feeder with DG.............................................................................29 3.3. System Protection............................................................................................31 3.4. Interconnection Protection...............................................................................35 3.5. DG Unit...

  9. Recovery Act: Beneficial CO{sub 2} Capture in an Integrated Algal Biorefinery for Renewable Generation and Transportation Fuels

    SciTech Connect (OSTI)

    Lane, Christopher; Hampel, Kristin; Rismani-Yazdi, Hamid; Kessler, Ben; Moats, Kenneth; Park, Jonathan; Schwenk, Jacob; White, Nicholas; Bakhit, Anis; Bargiel, Jeff; Allnutt, F.C.

    2014-03-31T23:59:59.000Z

    DOE DE-FE0001888 Award, Phase 2, funded research, development, and deployment (RD&D) of Phycal’s pilot-scale, algae to biofuels, bioproducts, and processing facility in Hawai’i. Phycal’s algal-biofuel and bioproducts production system integrates several novel and mature technologies into a system that captures and reuses industrially produced carbon dioxide emissions, which would otherwise go directly to the atmosphere, for the manufacture of renewable energy products and bioproducts from algae (note that these algae are not genetically engineered). At the end of Phase 2, the project as proposed was to encompass 34 acres in Central Oahu and provide large open ponds for algal mass culturing, heterotrophic reactors for the Heteroboost™ process, processing facilities, water recycling facilities, anaerobic digestion facilities, and other integrated processes. The Phase 2 award was divided into two modules, Modules 1 & 2, where the Module 1 effort addressed critical scaling issues, tested highest risk technologies, and set the overall infrastructure needed for a Module 2. Phycal terminated the project prior to executing construction of the first Module. This Final Report covers the development research, detailed design, and the proposed operating strategy for Module 1 of Phase 2.

  10. An Analysis of the Costs, Benefits, and Implications of Different Approaches to Capturing the Value of Renewable Energy Tax Incentives

    E-Print Network [OSTI]

    Bolinger, Mark

    2014-01-01T23:59:59.000Z

    Issue Brief: Reassessing Renewable Energy Subsidies. Marchupdate: PTC resurrection” Renewable Energy-Research Note,and Public Economics of Renewable Electricity Generation. ”

  11. Utility/Industry Partnerships Involving Distributed Generation Technologies in Evolving Electricity Markets 

    E-Print Network [OSTI]

    Rastler, D. M.

    1997-01-01T23:59:59.000Z

    Wires Manage Wires defer capital Optimize Energy Services Not Utility Business Not Utility Business New Business Opportunities DISTRIBUTED GENERATION Distributed generation includes small gas turbines, micro-turbines, fuel cells, storage... Residential Single Family Multi Family 1-10 kW 15- 50 kW Ultra micro-turbines Stirling Engines Fuel Cells PEMFC SOFC PV BatterylUPS Remote Loads 5 kW - 1,000 kW IC engines Off Grid Diesel Engine Micro turbine Stirling Engines Distribution...

  12. Onsite Backup Generation and Interruption Insurance for Electricity Distribution Author(s): Joseph A. Doucet and Shmuel S. Oren

    E-Print Network [OSTI]

    Oren, Shmuel S.

    Onsite Backup Generation and Interruption Insurance for Electricity Distribution Author(s): Joseph customerownedonsitebackupdecisionswillpre-emptthe utility'splan to mitigatecompensationpaymentsbyprovidingonsitebackup generation access to The Energy Journal. http://www.jstor.org #12;Onsite Backup Generation and Interruption

  13. A bio-inspired molecular water oxidation catalyst for renewable hydrogen generation: An examination of salt effects

    E-Print Network [OSTI]

    Lawson, Catherine L.

    , purification, and/or burning processes. The generation of hydrogen using solar energy to split water, ideally. Swiegersc , Leone Spicciaa * a School of Chemistry, Monash University, Clayton, Victoria 3800, Australia b, University of Wollongong, Wollongong, NSW 2522, Australia ABSTRACT Most transport fuels are derived from

  14. A Stochastic Unit Commitment Model for Integrating Renewable Supply

    E-Print Network [OSTI]

    Oren, Shmuel S.

    -optimization of generation and demand by the system operator, demand bids and coupling renewable resources with deferrable-optimizes the dispatch of demand- side resources, renewable supplies and generators. This is unrealistic in practice is coupling the operations of renewable resources with deferrable demand. The motivation of coupling renewable

  15. Why Do States Adopt Renewable Portfolio Standards?: An Empirical Investigation

    E-Print Network [OSTI]

    Lyon, Thomas P.

    131 Why Do States Adopt Renewable Portfolio Standards?: An Empirical Investigation Thomas P. Lyon* and Haitao Yin** Renewable portfolio standards (RPSs) for electricity generation are politically popularU.S.stategovernments of Renewable Portfolio Standards (RPSs) as a policy tool for promoting renewable electricity generation. An RPS

  16. Key factors affecting voltage oscillations of distribution networks with distributed generation and induction motor loads

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    of distributed energy sources such as, combined heat and power (CHP), wind, solar, and fuel cells, are expected and IT, The University of New South Wales, Canberra, ACT 2600, Australia b Future Grid Research Centre, The University of Melbourne, Parkville, VIC 3010, Australia c Griffith School of Engineering, Griffith University

  17. Renewable Electricity Futures: Exploration of Up to 80% Renewable Electricity Penetration in the United States (Presentation)

    SciTech Connect (OSTI)

    Hand, M.; DeMeo, E.; Hostick, D.; Mai, T.; Schlosser, C. A.

    2013-04-01T23:59:59.000Z

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  18. Sandia National Laboratories: Renewable Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Capabilities Solar power and other sources of renewable energy can help combat global warming but they have a draw-back: they don't produce energy as predictably as generating...

  19. Distributed Generation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    at customer sites to address peak load. 2 Using these resources could reduce required installed capacity and would increase the operating reserve margins for the network,...

  20. Renewable Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Technical s o Freiberge s 3 c/)Renewable Energy Renewable

  1. Renewable Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Technical s o Freiberge s 3 c/)Renewable Energy Renewable!

  2. Enhanced geothermal systems (EGS) using CO2 as working fluid - A novelapproach for generating renewable energy with simultaneous sequestration of carbon

    E-Print Network [OSTI]

    Pruess, Karsten

    2006-01-01T23:59:59.000Z

    and Clay Swelling in a Fractured Geothermal Reservoir,Transactions, Geothermal Resources Council, Vol. 28, pp.Renewable Energy, Office of Geothermal Technologies, of the

  3. Enhanced geothermal systems (EGS) using CO2 as working fluid - A novelapproach for generating renewable energy with simultaneous sequestration of carbon

    E-Print Network [OSTI]

    Pruess, Karsten

    2006-01-01T23:59:59.000Z

    Brown, D. A Hot Dry Rock Geothermal Energy Concept Utilizingand Renewable Energy, Office of Geothermal Technologies, ofThe resource base for geothermal energy is enormous, but

  4. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-08-01T23:59:59.000Z

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented at the 2012 RE AMP Annual Meeting. RE-AMP is an active network of 144 nonprofits and foundations across eight Midwestern states working on climate change and energy policy with the goal of reducing global warming pollution economy-wide 80% by 2050.

  5. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    DeMeo, E.

    2012-08-01T23:59:59.000Z

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented at Wind Powering America States Summit. The Summit, which follows the American Wind Energy Association's (AWEA's) annual WINDPOWER Conference and Exhibition, provides state Wind Working Groups, state energy officials, U.S. Energy Department and national laboratory representatives, and professional and institutional partners an opportunity to review successes, opportunities, and challenges for wind energy and plan future collaboration.

  6. Advanced Inverter Technology for High Penetration Levels of PV Generation in Distribution Systems

    SciTech Connect (OSTI)

    Schauder, C.

    2014-03-01T23:59:59.000Z

    This subcontract report was completed under the auspices of the NREL/SCE High-Penetration Photovoltaic (PV) Integration Project, which is co-funded by the U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) and the California Solar Initiative (CSI) Research, Development, Demonstration, and Deployment (RD&D) program funded by the California Public Utility Commission (CPUC) and managed by Itron. This project is focused on modeling, quantifying, and mitigating the impacts of large utility-scale PV systems (generally 1-5 MW in size) that are interconnected to the distribution system. This report discusses the concerns utilities have when interconnecting large PV systems that interconnect using PV inverters (a specific application of frequency converters). Additionally, a number of capabilities of PV inverters are described that could be implemented to mitigate the distribution system-level impacts of high-penetration PV integration. Finally, the main issues that need to be addressed to ease the interconnection of large PV systems to the distribution system are presented.

  7. Renewable Energy Production Tax Credits (Corporate)

    Broader source: Energy.gov [DOE]

    In June 2005, Iowa enacted legislation creating two separate production tax credit programs for energy generated by eligible wind and renewable energy facilities. An eligible facility can qualify...

  8. Renewable Energy Production Tax Credit (Personal)

    Broader source: Energy.gov [DOE]

    In June 2005, Iowa enacted legislation creating two separate production tax credit programs for energy generated by eligible wind and renewable energy facilities. An eligible facility can qualify...

  9. Commercial-Scale Renewable-Energy Grants

    Broader source: Energy.gov [DOE]

    The Rhode Island Commerce Corporation (Commerce RI) seeks to fund commercial scale renewable energy projects to generate electricity for onsite consumption. Commerce RI provides incentives for...

  10. Sandia National Laboratories: Renewable Energy Integration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    reciprocating engines normally operate. Unfortunately, much of emerging renewable-energy generation technologies run at lower speeds (e.g., wind turbines, oscillating wave-energy...

  11. Fuel Cell Generation in Geo-Distributed Cloud Services: A Quantitative Study

    E-Print Network [OSTI]

    Li, Baochun

    Fuel Cell Generation in Geo-Distributed Cloud Services: A Quantitative Study Zhi Zhou1 Fangming Liu of fuel cell energy in cloud computing, yet it is unclear what and how much benefit it may bring. This paper, for the first time, attempts to quantitatively examine the benefits brought by fuel cell

  12. Published in IET Generation, Transmission & Distribution Received on 8th July 2013

    E-Print Network [OSTI]

    Fu, Yong

    , in a practical power system, the transmission topology can change as a result of maintenance and network network topology in an electric power system. The modelling is accomplished in a coordinatedPublished in IET Generation, Transmission & Distribution Received on 8th July 2013 Revised on 31st

  13. Agent-Based Simulation of Distribution Systems with High Penetration of Photovoltaic Generation

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    of strategic trading in restructured wholesale power markets with congestion managed by locational marginal when coupled with increased price-sensitivity of demand as realized through demand response, demand dispatch, and/or price-sensitive demand bidding. Index Terms--Distributed power generation, multiagent sys

  14. Published in IET Generation, Transmission & Distribution Received on 5th October 2012

    E-Print Network [OSTI]

    Qu, Zhihua

    , and the system reliability is improved. The simulation results verify the effectiveness of the proposed secondary networks reduce the system reliability. More reliable and sparse communication networks can be accommodated of multiple photovoltaic generators in a power distribution system [16]. Networked multi-agent systems have

  15. The Political economy of environmental policy with overlapping generations

    E-Print Network [OSTI]

    Karp, Larry; Rezai, Amon

    2012-01-01T23:59:59.000Z

    Transfers with a Renewable Resource,” Land Economics,generations model with renewable resources,” Journal ofthe economics of renewable resources. Mourmouras (1993)

  16. Competitive Bidding Process for Electric Distribution Companies’ Procurement of Default and Back-up Electric Generation Services (Connecticut)

    Broader source: Energy.gov [DOE]

    Electric distribution companies shall utilize a competitive bidding process for electric generation services. The Department of Public Utility Control will be responsible for setting the criteria...

  17. Renewal Application

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements Recently ApprovedReliability TechnologyRenewal Individual Permit Renewal

  18. Renewable Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Technical s o Freiberge s 3 c/)Renewable Energy Renewable! Activities

  19. Renewable Portfolio Standard

    Broader source: Energy.gov [DOE]

    In 2007, Minnesota legislation modified the state's existing non-mandated renewable energy objective, creating a mandatory renewable portfolio standard (RPS) called the Renewable Energy Standard ...

  20. Trends in Renewable Energy Consumption and Electricity

    Reports and Publications (EIA)

    2012-01-01T23:59:59.000Z

    Presents a summary of the nation’s renewable energy consumption in 2010 along with detailed historical data on renewable energy consumption by energy source and end-use sector. Data presented also includes renewable energy consumption for electricity generation and for non-electric use by energy source, and net summer capacity and net generation by energy source and state. The report covers the period from 2006 through 2010.

  1. Renewable Energies program (6 credit hour) Option A: 11

    E-Print Network [OSTI]

    Simaan, Nabil

    Renewable Energies program (6 credit hour) Option A: 11 Option B: The program is organized by t Spanish Institute and the Asso program on renewable energy will provide students with advanced knowledge. opportunities: option A- two renewable energies; option B include on-site visits to renewable energy generation

  2. RESEARCH RESULTS FORUM FOR RENEWABLE ENERGY TECHNOLOGY AND RESOURCE ASSESSMENTS

    E-Print Network [OSTI]

    California at Davis, University of

    Renewable Energy Center 58 Wind: Development Potential ­ Geyserville · Potential to collocate wind Renewable Energy Center Assessment of Co-located Renewable Generation Potential #12;California Renewable (Task 2, L.A. Basin) and regions (Task 5) with co-located resources · Assess resource potential

  3. Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation

    E-Print Network [OSTI]

    Bolinger, Mark; Wiser, Ryan; Golove, William

    2003-01-01T23:59:59.000Z

    Associates, citing NYMEX natural gas bid-offer spreadAnalysis of the Market for Natural Gas Futures. ” The EnergyProfiles of Renewable and Natural Gas Electricity Contracts:

  4. On-Site Renewable Power Purchase Agreements for Renewable Energy Projects

    Broader source: Energy.gov [DOE]

    An on-site renewable power purchase agreement (PPA) enables Federal agencies to fund a renewable energy project by contracting to purchase the power generated by the system. The renewable energy equipment is installed and owned by a developer but located on-site at the agency facility.

  5. Renewable energy generation sources have

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements Recently ApprovedReliability Technology earnsRememberingFeature energy

  6. Abstract--Recently, there is an increasing interest in using distributed generators (DGs) not only to inject power into the

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    1 1 Abstract--Recently, there is an increasing interest in using distributed generators (DGs, it is well-known that the Distributed Generators (DGs) often consist of a prime mover connected through-frame control method for voltage unbalance compensation in an islanded microgrid is proposed. This method

  7. Soil water and particle size distribution influence laboratory-generated PM10 Nicholaus M. Madden a,*, Randal J. Southard a

    E-Print Network [OSTI]

    Ahmad, Sajjad

    Soil water and particle size distribution influence laboratory-generated PM10 Nicholaus M. Madden a Soil particle size distribution Soil water content a b s t r a c t Management of soils to reduce earlier work of predicting tillage-generated dust emissions based on soil properties. We focus

  8. Ionic Liquids for Utilization of Waste Heat from Distributed Power Generation Systems

    SciTech Connect (OSTI)

    Joan F. Brennecke; Mihir Sen; Edward J. Maginn; Samuel Paolucci; Mark A. Stadtherr; Peter T. Disser; Mike Zdyb

    2009-01-11T23:59:59.000Z

    The objective of this research project was the development of ionic liquids to capture and utilize waste heat from distributed power generation systems. Ionic Liquids (ILs) are organic salts that are liquid at room temperature and they have the potential to make fundamental and far-reaching changes in the way we use energy. In particular, the focus of this project was fundamental research on the potential use of IL/CO2 mixtures in absorption-refrigeration systems. Such systems can provide cooling by utilizing waste heat from various sources, including distributed power generation. The basic objectives of the research were to design and synthesize ILs appropriate for the task, to measure and model thermophysical properties and phase behavior of ILs and IL/CO2 mixtures, and to model the performance of IL/CO2 absorption-refrigeration systems.

  9. DOE Office of Indian Energy Renewable Energy Project Development...

    Broader source: Energy.gov (indexed) [DOE]

    Utility Power Renewable Power Years * Currently, grid tie appears more expensive than diesel generators * Immediate savings from new solar generation, including infrastructure...

  10. Renewable Energy 101 (Presentation)

    SciTech Connect (OSTI)

    Walker, A.

    2012-03-01T23:59:59.000Z

    Presentation given at the 2012 Department of Homeland Security Renewable Energy Roundtable as an introduction to renewable technologies and applications.

  11. Methodology for the optimal design of PEV charging systems with multiple chargers and distributed resources

    E-Print Network [OSTI]

    Gunter, Samantha Joellyn

    Increased penetration of plug-in electric vehicles (PEVs) will necessitate deployment of numerous PEV chargers. Pairing these chargers with renewable distributed generation (DG) and storage can potentially alleviate negative ...

  12. Optimal Design of Grid-Connected PEV Charging Systems With Integrated Distributed Resources

    E-Print Network [OSTI]

    Perreault, David J.

    The penetration of plug-in electric vehicles and renewable distributed generation is expected to increase over the next few decades. Large scale unregulated deployment of either technology can have a detrimental impact on ...

  13. Renewable Electricity Futures Study

    E-Print Network [OSTI]

    Renewable Electricity Futures Study Exploration of High-Penetration Renewable Electricity Futures PDF Volume 4 PDF #12;Renewable Electricity Futures Study Edited By Hand, M.M. National Renewable Citations Renewable Electricity Futures Study (Entire Report) National Renewable Energy Laboratory. (2012

  14. Design of a 2.5kW Low Temperature Stirling Engine for Distributed Solar Thermal Generation

    E-Print Network [OSTI]

    Sanders, Seth

    Design of a 2.5kW Low Temperature Stirling Engine for Distributed Solar Thermal Generation Mike He on the design of a Stirling engine for distributed solar thermal ap- plications. In particular, we design for experimentation. Stirling engines can have broad significance and technological advantages for distributed

  15. SIZE DISTRIBUTION AND RATE OF PRODUCTION OF AIRBORNE PARTICULATE MATTER GENERATED DURING METAL CUTTING

    SciTech Connect (OSTI)

    M.A. Ebadian, Ph.D.; S.K. Dua, Ph.D., C.H.P.; Hillol Guha, Ph.D.

    2001-01-01T23:59:59.000Z

    During deactivation and decommissioning activities, thermal cutting tools, such as plasma torch, laser, and gasoline torch, are used to cut metals. These activities generate fumes, smoke and particulates. These airborne species of matter, called aerosols, may be inhaled if suitable respiratory protection is not used. Inhalation of the airborne metallic aerosols has been reported to cause ill health effects, such as acute respiratory syndrome and chromosome damage in lymphocytes. In the nuclear industry, metals may be contaminated with radioactive materials. Cutting these metals, as in size reduction of gloveboxes and tanks, produces high concentrations of airborne transuranic particles. Particles of the respirable size range (size < 10 {micro}m) deposit in various compartments of the respiratory tract, the fraction and the site in the respiratory tract depending on the size of the particles. The dose delivered to the respiratory tract depends on the size distribution of the airborne particulates (aerosols) and their concentration and radioactivity/toxicity. The concentration of airborne particulate matter in an environment is dependent upon the rate of their production and the ventilation rate. Thus, measuring aerosol size distribution and generation rate is important for (1) the assessment of inhalation exposures of workers, (2) the selection of respiratory protection equipment, and (3) the design of appropriate filtration systems. Size distribution of the aerosols generated during cutting of different metals by plasma torch was measured. Cutting rates of different metals, rate of generation of respirable mass, as well as the fraction of the released kerf that become respirable were determined. This report presents results of these studies. Measurements of the particles generated during cutting of metal plates with a plasma arc torch revealed the presence of particles with mass median aerodynamic diameters of particles close to 0.2 {micro}m, arising from condensation of vaporized material and subsequent rapid formation of aggregates. Particles of larger size, resulting from ejection of melted material or fragments from the cutting zone, were also observed. This study presents data regarding the metal cutting rate, particle size distribution, and their generation rate, while using different cutting tools and metals. The study shows that respirable particles constitute only a small fraction of the released kerf.

  16. Purchasing Renewable Power | Department of Energy

    Energy Savers [EERE]

    Products & Technologies Renewable Energy Purchasing Renewable Power Purchasing Renewable Power Federal agencies can purchase renewable power or renewable energy certificates...

  17. Making the Economic Case for Small-Scale Distributed Wind -- A Screening for Distributed Generation Wind Opportunities: Preprint

    SciTech Connect (OSTI)

    Kandt, A.; Brown, E.; Dominick, J.; Jurotich, T.

    2007-06-01T23:59:59.000Z

    This study was an offshoot of a previous assessment, which examined the potential for large-scale, greater than 50 MW, wind development on occupied federal agency lands. The study did not find significant commercial wind development opportunities, primarily because of poor wind resource on available and appropriately sized land areas or land use or aesthetic concerns. The few sites that could accommodate a large wind farm failed to have transmission lines in optimum locations required to generate power at competitive wholesale prices. The study did identify a promising but less common distributed generation (DG) development option. This follow-up study documents the NREL/Global Energy Concepts team efforts to identify economic DG wind projects at a select group of occupied federal sites. It employs a screening strategy based on project economics that go beyond quantity of windy land to include state and utility incentives as well as the value of avoided power purchases. It attempts to account for the extra costs and difficulties associated with small projects through the use of project scenarios that are more compatible with federal facilities and existing land uses. These benefits and barriers of DG are discussed, and the screening methodology and results are included. The report concludes with generalizations about the screening method and recommendations for improvement and other potential applications for this methodology.

  18. GREENHOUSE GAS REDUCTION POTENTIAL WITH COMBINED HEAT AND POWER WITH DISTRIBUTED GENERATION PRIME MOVERS - ASME 2012

    SciTech Connect (OSTI)

    Curran, Scott [ORNL; Theiss, Timothy J [ORNL; Bunce, Michael [ORNL

    2012-01-01T23:59:59.000Z

    Pending or recently enacted greenhouse gas regulations and mandates are leading to the need for current and feasible GHG reduction solutions including combined heat and power (CHP). Distributed generation using advanced reciprocating engines, gas turbines, microturbines and fuel cells has been shown to reduce greenhouse gases (GHG) compared to the U.S. electrical generation mix due to the use of natural gas and high electrical generation efficiencies of these prime movers. Many of these prime movers are also well suited for use in CHP systems which recover heat generated during combustion or energy conversion. CHP increases the total efficiency of the prime mover by recovering waste heat for generating electricity, replacing process steam, hot water for buildings or even cooling via absorption chilling. The increased efficiency of CHP systems further reduces GHG emissions compared to systems which do not recover waste thermal energy. Current GHG mandates within the U.S Federal sector and looming GHG legislation for states puts an emphasis on understanding the GHG reduction potential of such systems. This study compares the GHG savings from various state-of-the- art prime movers. GHG reductions from commercially available prime movers in the 1-5 MW class including, various industrial fuel cells, large and small gas turbines, micro turbines and reciprocating gas engines with and without CHP are compared to centralized electricity generation including the U.S. mix and the best available technology with natural gas combined cycle power plants. The findings show significant GHG saving potential with the use of CHP. Also provided is an exploration of the accounting methodology for GHG reductions with CHP and the sensitivity of such analyses to electrical generation efficiency, emissions factors and most importantly recoverable heat and thermal recovery efficiency from the CHP system.

  19. IEEE TRANSACTIONS ON SMART GRID 1 Optimal, Nonlinear, and Distributed Designs of

    E-Print Network [OSTI]

    Qu, Zhihua

    and utilizing alternative energy sources. Of special interest are renewable energy sources such as solar- neering for Accelerated Renewable Energy Deployment program), and by US Department of Energy's Solar of optimal voltage and power regulation is formulated for distributed generators (DGs) in DC microgrids

  20. Ultrashort laser ablation of bulk copper targets: Dynamics and size distribution of the generated nanoparticles

    SciTech Connect (OSTI)

    Tsakiris, N.; Gill-Comeau, M.; Lewis, L. J. [Département de Physique et Regroupement Québécois sur les Matériaux de Pointe (RQMP), Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, Québec H3C 3J7 (Canada); Anoop, K. K.; Ausanio, G.; Bruzzese, R.; Amoruso, S., E-mail: amoruso@na.infn.it [Dipartimento di Fisica, Università degli Studi di Napoli Federico II and CNR-SPIN, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli (Italy)

    2014-06-28T23:59:59.000Z

    We address the role of laser pulse fluence on expansion dynamics and size distribution of the nanoparticles produced by irradiating a metallic target with an ultrashort laser pulse in a vacuum, an issue for which contrasting indications are present in the literature. To this end, we have carried out a combined theoretical and experimental analysis of laser ablation of a bulk copper target with ?50 fs, 800?nm pulses, in an interval of laser fluencies going from few to several times the ablation threshold. On one side, molecular dynamics simulations, with two-temperature model, describe the decomposition of the material through the analysis of the evolution of thermodynamic trajectories in the material phase diagram, and allow estimating the size distribution of the generated nano-aggregates. On the other side, atomic force microscopy of less than one layer nanoparticles deposits on witness plates, and fast imaging of the nanoparticles broadband optical emission provide the corresponding experimental characterization. Both experimental and numerical findings agree on a size distribution characterized by a significant fraction (?90%) of small nanoparticles, and a residual part (?10%) spanning over a rather large size interval, evidencing a weak dependence of the nanoparticles sizes on the laser pulse fluence. Numerical and experimental findings show a good degree of consistency, thus suggesting that modeling can realistically support the search for experimental methods leading to an improved control over the generation of nanoparticles by ultrashort laser ablation.

  1. Optimizing Geographic Allotment of Photovoltaic Capacity in a Distributed Generation Setting: Preprint

    SciTech Connect (OSTI)

    Urquhart, B.; Sengupta, M.; Keller, J.

    2012-09-01T23:59:59.000Z

    A multi-objective optimization was performed to allocate 2MW of PV among four candidate sites on the island of Lanai such that energy was maximized and variability in the form of ramp rates was minimized. This resulted in an optimal solution set which provides a range of geographic allotment alternatives for the fixed PV capacity. Within the optimal set, a tradeoff between energy produced and variability experienced was found, whereby a decrease in variability always necessitates a simultaneous decrease in energy. A design point within the optimal set was selected for study which decreased extreme ramp rates by over 50% while only decreasing annual energy generation by 3% over the maximum generation allocation. To quantify the allotment mix selected, a metric was developed, called the ramp ratio, which compares ramping magnitude when all capacity is allotted to a single location to the aggregate ramping magnitude in a distributed scenario. The ramp ratio quantifies simultaneously how much smoothing a distributed scenario would experience over single site allotment and how much a single site is being under-utilized for its ability to reduce aggregate variability. This paper creates a framework for use by cities and municipal utilities to reduce variability impacts while planning for high penetration of PV on the distribution grid.

  2. Renewable energy: Renewing the environment

    SciTech Connect (OSTI)

    Noun, R.J. [National Renewable Energy Lab., Golden, CO (United States)

    1996-12-31T23:59:59.000Z

    During the past 20 years, the United States has enacted some of the world`s most comprehensive legislation to protect and preserve its environmental heritage. These regulations have spawned a $115-billion-per-year industry for {open_quotes}green{close_quotes} products and services, with more than 35,000 companies providing jobs for American workers. On the other hand, environmental regulations have placed heavy cost burdens on many U.S. businesses as they struggle to remain competitive in both domestic and foreign markets. How, then, can one reconcile the growing need for environmental protection with the desire for a stronger, healthier economy? Even as Congress debates the value of existing environmental legislation, new threats are appearing on the horizon. For example, extensive storm damage from Hurricane Andrew and other natural disasters has prompted members of the $650-billion insurance industry to begin studying the effects that global warming may have on future property damage claims. More and more people are realizing that the most efficient and economical way to control pollution is to avoid creating it in the first place. And that`s where renewable energy comes in. Technologies based on nonpolluting renewable energy sources such as sunlight and wind can help preserve our environmental heritage without a tangled web of regulations to burden industry. Renewable energy technologies can also help the United States become a world leader in a potential $400-billion-a-year global market for environmentally friendly products.

  3. Novera Renewable Energy formerly Novera Macquarie Renewable Energy...

    Open Energy Info (EERE)

    Novera Renewable Energy formerly Novera Macquarie Renewable Energy Limited NMRE Jump to: navigation, search Name: Novera Renewable Energy (formerly Novera Macquarie Renewable...

  4. DOE Announces Webinars on Tribal Renewable Energy Projects, Renewable...

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

    DOE Announces Webinars on Tribal Renewable Energy Projects, Renewable Natural Gas for Vehicles, and More DOE Announces Webinars on Tribal Renewable Energy Projects, Renewable...

  5. Large Industrial Renewable Energy Purchase Program (New Brunswick)

    Broader source: Energy.gov [DOE]

    Beginning January 1, 2012 the Large Industrial Renewable Energy Purchase Program allows NB Power to purchase renewable energy generated by its largest customers at a rate of $95/MWh. This...

  6. Decoding the `Nature Encoded' Messages for Distributed Energy Generation Control in Microgrid

    E-Print Network [OSTI]

    Gong, Shuping; Lai, Lifeng; Qiu, Robert C

    2010-01-01T23:59:59.000Z

    The communication for the control of distributed energy generation (DEG) in microgrid is discussed. Due to the requirement of realtime transmission, weak or no explicit channel coding is used for the message of system state. To protect the reliability of the uncoded or weakly encoded messages, the system dynamics are considered as a `nature encoding' similar to convolution code, due to its redundancy in time. For systems with or without explicit channel coding, two decoding procedures based on Kalman filtering and Pearl's Belief Propagation, in a similar manner to Turbo processing in traditional data communication systems, are proposed. Numerical simulations have demonstrated the validity of the schemes, using a linear model of electric generator dynamic system.

  7. Onsite Distributed Generation Systems For Laboratories, Laboratories for the 21st Century: Best Practices (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2011-09-01T23:59:59.000Z

    This guide provides general information on implementing onsite distributed generation systems in laboratory environments. Specific technology applications, general performance information, and cost data are provided to educate and encourage laboratory energy managers to consider onsite power generation or combined heat and power (CHP) systems for their facilities. After conducting an initial screening, energy managers are encouraged to conduct a detailed feasibility study with actual cost and performance data for technologies that look promising. Onsite distributed generation systems are small, modular, decentralized, grid-connected, or off-grid energy systems. These systems are located at or near the place where the energy is used. These systems are also known as distributed energy or distributed power systems. DG technologies are generally considered those that produce less than 20 megawatts (MW) of power. A number of technologies can be applied as effective onsite DG systems, including: (1) Diesel, natural gas, and dual-fuel reciprocating engines; (2) Combustion turbines and steam turbines; (3) Fuel cells; (4) Biomass heating; (5) Biomass combined heat and power; (6) Photovoltaics; and (7) Wind turbines. These systems can provide a number of potential benefits to an individual laboratory facility or campus, including: (1) High-quality, reliable, and potentially dispatchable power; (2) Low-cost energy and long-term utility cost assurance, especially where electricity and/or fuel costs are high; (3) Significantly reduced greenhouse gas (GHG) emissions. Typical CHP plants reduce onsite GHG by 40 to 60 percent; (4) Peak demand shaving where demand costs are high; (5) CHP where thermal energy can be used in addition to electricity; (6) The ability to meet standby power needs, especially where utility-supplied power is interrupted frequently or for long periods and where standby power is required for safety or emergencies; and (7) Use for standalone or off-grid systems where extending the grid is too expensive or impractical. Because they are installed close to the load, DG systems avoid some of the disadvantages of large, central power plants, such as transmission and distribution losses over long electric lines.

  8. Renewable Electricity Futures Study

    E-Print Network [OSTI]

    Renewable Electricity Futures Study End-use Electricity Demand Volume 3 of 4 Volume 2 PDF Volume 3;Renewable Electricity Futures Study Edited By Hand, M.M. National Renewable Energy Laboratory Baldwin, S. U Sandor, D. National Renewable Energy Laboratory Suggested Citations Renewable Electricity Futures Study

  9. Renewable Energy Opportunities at Fort Hood, Texas

    SciTech Connect (OSTI)

    Chvala, William D.; Warwick, William M.; Dixon, Douglas R.; Solana, Amy E.; Weimar, Mark R.; States, Jennifer C.; Reilly, Raymond W.

    2008-06-30T23:59:59.000Z

    The document provides an overview of renewable resource potential at Fort Hood based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations. The effort was funded by the U.S. Army Installation Management Command (IMCOM) as follow-on to the 2005 DoD Renewables Assessment. This effort focuses on grid-connected generation of electricity from renewable energy sources and also ground source heat pumps for heating and cooling buildings, as directed by IMCOM.

  10. Sandia National Laboratories: Renewable Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Renewable Systems On November 4, 2010, in Renewable Systems Renewable Energy Transportation Nuclear Fossil Energy Efficiency Publications Events News Renewable Systems The...

  11. Innovations in Voluntary Renewable Energy Procurement: Methods for Expanding Access and Lowering Cost for Communities, Governments, and Businesses (Technical Report)

    SciTech Connect (OSTI)

    Heeter, J.; McLaren, J.

    2012-09-01T23:59:59.000Z

    This guide explores five innovative options for voluntarily procuring renewable energy generation or systems.

  12. Reliable, Low-Cost Distributed Generator/Utility System Interconnect: Final Subcontract Report, November 2001-March 2004

    SciTech Connect (OSTI)

    Ye, Z.; Walling, R.; Miller, N.; Du, P.; Nelson, K.; Li, L.; Zhou, R.; Garces, L.; Dame, M.

    2006-03-01T23:59:59.000Z

    This report summarizes the detailed study and development of new GE anti-islanding controls for two classes of distributed generation. One is inverter-interfaced, while the other is synchronous machine interfaced.

  13. CONSULTANT REPORT EUROPEAN RENEWABLE DISTRIBUTED

    E-Print Network [OSTI]

    Corfee, KEMA Inc., Project Manager David Korinek, KEMA Inc. Christian Hewicker, KEMA Inc. Jorg Zillmer

  14. Electronic copy available at: http://ssrn.com/abstract=2014738 Published: J. M. Pearce, "Expanding Photovoltaic Penetration with Residential Distributed Generation

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Photovoltaic Penetration with Residential Distributed Generation from Hybrid Solar Photovoltaic + Combined Heat.08.012 Expanding Photovoltaic Penetration with Residential Distributed Generation from Hybrid Solar Photovoltaic and power (CHP) systems has provided the opportunity for inhouse power backup of residentialscale

  15. Generating the local oscillator "locally" in continuous-variable quantum key distribution based on coherent detection

    E-Print Network [OSTI]

    Bing Qi; Pavel Lougovski; Raphael Pooser; Warren Grice; Miljko Bobrek

    2015-03-02T23:59:59.000Z

    Continuous-variable quantum key distribution (CV-QKD) protocols based on coherent detection have been studied extensively in both theory and experiment. In all the existing implementations of CV-QKD, both the quantum signal and the local oscillator (LO) are generated from the same laser and propagate through the insecure quantum channel. This arrangement may open security loopholes and also limit the potential applications of CV-QKD. In this paper, we propose and demonstrate a pilot-aided feedforward data recovery scheme which enables reliable coherent detection using a "locally" generated LO. Using two independent commercial laser sources and a spool of 25 km optical fiber, we construct a coherent communication system. The variance of the phase noise introduced by the proposed scheme is measured to be 0.04 (rad^2), which is small enough to enable secure key distribution. This technology also opens the door for other quantum communication protocols, such as the recently proposed measurement-device-independent (MDI) CV-QKD where independent light sources are employed by different users.

  16. Renewable Electricity Futures for the United States

    SciTech Connect (OSTI)

    Mai, Trieu; Hand, Maureen; Baldwin, Sam F.; Wiser , Ryan; Brinkman, G.; Denholm, Paul; Arent, Doug; Porro, Gian; Sandor, Debra; Hostick, Donna J.; Milligan, Michael; DeMeo, Ed; Bazilian, Morgan

    2014-04-14T23:59:59.000Z

    This paper highlights the key results from the Renewable Electricity (RE) Futures Study. It is a detailed consideration of renewable electricity in the United States. The paper focuses on technical issues related to the operability of the U. S. electricity grid and provides initial answers to important questions about the integration of high penetrations of renewable electricity technologies from a national perspective. The results indicate that the future U. S. electricity system that is largely powered by renewable sources is possible and the further work is warranted to investigate this clean generation pathway. The central conclusion of the analysis is that renewable electricity generation from technologies that are commercially available today, in combination with a more flexible electric system, is more than adequate to supply 80% of the total U. S. electricity generation in 2050 while meeting electricity demand on an hourly basis in every region of the United States.

  17. NEW RENEWABLE FACILITIES PROGRAM

    E-Print Network [OSTI]

    's electricity from renewable resources by 2010. The Guidebook outlines eligibility and legal requirementsCALIFORNIA ENERGY COMMISSION ` NEW RENEWABLE FACILITIES PROGRAM GUIDEBOOK March 2007 CEC-300 Executive Director Heather Raitt Technical Director RENEWABLE ENERGY OFFICE CALIFORNIA ENERGY COMMISSION

  18. Viability of Small Wind Distributed Generation for Farmers Who Irrigate (Poster)

    SciTech Connect (OSTI)

    Meadows, B.; Forsyth, T.; Johnson, S.; Healow, D.

    2010-05-01T23:59:59.000Z

    About 14% of U.S. farms are irrigated, representing 55 million acres of irrigated land. Irrigation on these farms is a major energy user in the United States, accounting for one-third of water withdrawals and 137 billion gallons per day. More than half of the Irrigation systems use electric energy. Wind energy can be a good choice for meeting irrigation energy needs. Nine of the top 10 irrigation states (California, Texas, Idaho, Arkansas, Colorado, Nebraska, Arizona, Kansas, Washington, and Oregon) have good to excellent wind resources. Many rural areas have sufficient wind speeds to make wind an attractive alternative, and farms and ranches can often install a wind energy system without impacting their ability to plant crops and graze livestock. Additionally, the rising and uncertain future costs of diesel, natural gas, and even electricity increase the potential effectiveness for wind energy and its predictable and competitive cost. In general, wind-powered electric generation systems generate more energy in the winter months than in the summer months when most crops need the water. Therefore, those states that have a supportive net metering policy can dramatically impact the viability of an onsite wind turbine. This poster presentation highlights case studies that show favorable and unfavorable policies that impact the growth of small wind in this important sector and demonstrate how net metering policies affect the viability of distributed wind generation for farmers who irrigate.

  19. Abstract--This paper presents the consequences and operating limitations of installing distributed generation (DG) to electric

    E-Print Network [OSTI]

    are required for the selection of interruption devices, protective relays, and their coordination. Systems must Terms--Distributed / dispersed generation, power distri- bution, power system protection, fault in siting conventional generation ­ but, for whatever reason, protection engineers as well as transmission

  20. Panel on Microgrids Systems International Conference on System of Systems Engineering, April 16-18, 2007 San Antonio Abstract--Application of individual distributed generators can

    E-Print Network [OSTI]

    are included. Keywords: CHP, UPS, distributed generation, intentional islanding, inverters, microgrid, power vs-18, 2007 San Antonio Abstract--Application of individual distributed generators can cause as many problems as it may solve. A better way to realize the emerging potential of distributed generation is to take

  1. Renewable energy 1998: Issues and trends

    SciTech Connect (OSTI)

    NONE

    1999-03-01T23:59:59.000Z

    This report presents the following five papers: Renewable electricity purchases: History and recent developments; Transmission pricing issues for electricity generation from renewable resources; Analysis of geothermal heat pump manufacturers survey data; A view of the forest products industry from a wood energy perspective; and Wind energy developments: Incentives in selected countries. A glossary is included. 19 figs., 27 tabs.

  2. Sandia Energy - Renewable Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol Home Distribution GridDocuments Home Stationary Power EnergyRenewable Energy

  3. renewable energy | EMSL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    renewable energy renewable energy Leads No leads are available at this time. Microstructure and Cs Behavior of Ba-Doped Aluminosilicate Pollucite Irradiated with F+ Ions. Abstract:...

  4. The distribution of Voronoi cells generated by Southern California earthquake epicenters

    E-Print Network [OSTI]

    Schoenberg, Frederic P; Barr, Christopher; Jungju Seo

    2007-01-01T23:59:59.000Z

    Continuous Univariate Distributions. 2nd ed. Wiley, Newfor the tapered Pareto distribution. Journal of AppliedWoods, J. (2003) On the distribution of wild?re sizes. Envi-

  5. The RenewElec Project: Variable Renewable Energy and the Power System

    SciTech Connect (OSTI)

    Apt, Jay

    2014-02-14T23:59:59.000Z

    Variable energy resources, such as wind power, now produce about 4% of U.S. electricity. They can play a significantly expanded role if the U.S. adopts a systems approach that considers affordability, security and reliability. Reaching a 20-30% renewable portfolio standard goal is possible, but not without changes in the management and regulation of the power system, including accurately assessing and preparing for the operational effects of renewable generation. The RenewElec project will help the nation make the transition to the use of significant amounts of electric generation from variable and intermittent sources of renewable power.

  6. Study of the longitudinal distribution of power generated in a random distributed feedback Raman fibre laser with unidirectional pumping

    SciTech Connect (OSTI)

    Churkin, D V; El-Taher, A E; Vatnik, I D; Babin, Sergei A

    2012-09-30T23:59:59.000Z

    The longitudinal distribution of the Stokes-component power in a Raman fibre laser with a random distributed feedback and unidirectional pumping is measured. The fibre parameters (linear loss and Rayleigh backscattering coefficient) are calculated based on the distributions obtained. A numerical model is developed to describe the lasing power distribution. The simulation results are in good agreement with the experimental data. (optical fibres, lasers and amplifiers. properties and applications)

  7. Renewable Electricity Futures Study. Executive Summary

    SciTech Connect (OSTI)

    Mai, T.; Sandor, D.; Wiser, R.; Schneider, T.

    2012-12-01T23:59:59.000Z

    The Renewable Electricity Futures (RE Futures) Study investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. The analysis focused on the sufficiency of the geographically diverse U.S. renewable resources to meet electricity demand over future decades, the hourly operational characteristics of the U.S. grid with high levels of variable wind and solar generation, and the potential implications of deploying high levels of renewables in the future. RE Futures focused on technical aspects of high penetration of renewable electricity; it did not focus on how to achieve such a future through policy or other measures. Given the inherent uncertainties involved with analyzing alternative long-term energy futures as well as the multiple pathways that might be taken to achieve higher levels of renewable electricity supply, RE Futures explored a range of scenarios to investigate and compare the impacts of renewable electricity penetration levels (30%-90%), future technology performance improvements, potential constraints to renewable electricity development, and future electricity demand growth assumptions. RE Futures was led by the National Renewable Energy Laboratory (NREL) and the Massachusetts Institute of Technology (MIT).

  8. Spectroscopic measurement of ion temperature and ion velocity distributions in the flux-coil generated FRC

    SciTech Connect (OSTI)

    Gupta, D.; Gota, H.; Hayashi, R.; Kiyashko, V.; Morehouse, M.; Primavera, S. [Tri Alpha Energy, Inc., Rancho Santa Margarita, California 92688 (United States); Bolte, N. [Tri Alpha Energy, Inc., Rancho Santa Margarita, California 92688 (United States); Department of Physics and Astronomy, University of California, Irvine, California 92697 (United States); Marsili, P. [Department of Physics, University of Pisa, Largo B. Pontecorvo 3, 56127 Pisa (Italy); Roche, T. [Department of Physics and Astronomy, University of California, Irvine, California 92697 (United States); Wessel, F. [Department of Physics and Astronomy, University of California, Irvine, California 92697 (United States); Tri Alpha Energy, Inc., Rancho Santa Margarita, California 92688 (United States)

    2010-10-15T23:59:59.000Z

    One aim of the flux-coil generated field reversed configuration at Tri Alpha Energy (TAE) is to establish the plasma where the ion rotational energy is greater than the ion thermal energy. To verify this, an optical diagnostic was developed to simultaneously measure the Doppler velocity-shift and line-broadening using a 0.75 m, 1800 groves/mm, spectrometer. The output spectrum is magnified and imaged onto a 16-channel photomultiplier tube (PMT) array. The individual PMT outputs are coupled to high-gain, high-frequency, transimpedance amplifiers, providing fast-time response. The Doppler spectroscopy measurements, along with a survey spectrometer and photodiode-light detector, form a suite of diagnostics that provide insights into the time evolution of the plasma-ion distribution and current when accelerated by an azimuthal-electric field.

  9. Commercialization of a 2.5kW Utility Interactive Inverter for Distributed Generation

    SciTech Connect (OSTI)

    Torrey, David A.

    2006-05-26T23:59:59.000Z

    Through this project, Advanced Energy Conversion (AEC) has developed, tested, refined and is preparing to commercialize a 2.5kW utility-interactive inverter system for distributed generation. The inverter technology embodies zero-voltage switching technology that will ultimately yield a system that is smaller, less expensive and more efficient than existing commercial technologies. This program has focused on commercial success through careful synthesis of technology, market-focus and business development. AEC was the primary participant. AEC is utilizing contract manufacturers in the early stages of production, allowing its technical staff to focus on quality control issues and product enhancements. The objective of this project was to bring the AEC inverter technology from its current pre-production state to a commercial product. Federal funds have been used to build and test production-intent inverters, support the implementation of the commercialization plan and bring the product to the point of UL certification.

  10. PUEBLO OF ZIA RENEWABLE ENERGY DEVELOPMENT FEASIBILITY STUDY

    SciTech Connect (OSTI)

    Pino, Peter M. [Tribal Administrator (Ret.), Pueblo of Zia; Lakshman, Jai [Project Manager (NDA) for Pueblo of Zia; Toole, G. Loren [Principal Investigator, Los Alamos National Laboratory - Energy Analysis Team/ CCS-3, D-4; Hand, Dan [P.E., Sustainable Enginerring; Witcher, James; Emerson, Michael A. [Senior V.P., ARES Corporation; Turner, Jeremy [Executive Director, NM Renewable Energy Transmission Authority; Sandidge, Wendy [Director of Operations, NM Community Capital

    2014-06-30T23:59:59.000Z

    The Pueblo of Zia will conduct a comprehensive feasibility study for best-use application(s) for development of renewable energy resources on its tribally held TRUST lands (i.e., Trust Lands of Zia Indian Reservation). The feasibility study is essential for determining the technical and economic viability of a future renewable project(s) on Zia tribal lands, including the potential economic and environmental benefits for the Tribe. Project Objectives: The feasibility study is essential for determining the technical and economic viability of future renewable project(s) on Zia tribal lands, including the potential economic and environmental benefits for the Tribe to: 1. Provide a balanced local renewable power supply for Zia Pueblo, its members, tribal offices, schools and buildings, and businesses on tribal lands 2. Provide a firm power supply for export and commercial market distribution 3. Provide economic development for the Tribe and its members, including job training and creation, each in accordance with the goals and objectives as conveyed by the Pueblo of Zia Tribal Council, Tribal Administration, and outlined in The Pueblo of Zia Comprehensive Plan and Pueblo of Zia — Zia Enterprise Zone Master Plan. A key goal of the study is to analyze the integrated development of solar, geothermal, and wind renewable energy resources at Zia Pueblo, with added potential to combine gas-fired generation to accomplish energy firming. Geothermal offers a base load source of energy, providing power continuously for end users. Wind and solar offer intermediate and peaking sources of energy, which can be harvested throughout the day, with periods of variable but predicable output. Variability will be managed in an integrated manner, using Zia Pueblo's combined renewable resources to generate high-quality power. Tasks are intended to collect, catalog, map, and analyze existing data on Zia Pueblo's renewable energy resource base and then match resource attributes with the most suitable renewable technologies for tribal energy consumption and needs. Also, key impacts on cultural and social values of Zia Pueblo will be addressed. Selected most favorable uses and technologies will be further investigated to determine initial feasibility and market for business development for up to six sites located on tribal land. The anticipated result will be the recommended development of sites that have sufficient background study completed to warrant a business plan, detailed engineering feasibility, and acquisition of project financing. Valuable technical and economic information will accrue from this study that may be applied to scale up or down the various power technology potential on Zia Pueblo for maximum benefit and best area(s) of application, project phasing and potential for future replicability and expansion.

  11. Diagnostic probes for particle and molecule distributions in laser-generated plumes

    SciTech Connect (OSTI)

    Kimbrell, S.M.

    1990-10-17T23:59:59.000Z

    Laser microprobe analysis (LMA) offers good spatial and depth resolution for solid sampling of virtually any material. Coupled with numerous optical spectroscopic and mass spectrometric detection methods, LMA is a powerful analytical tool. Yet, fundamental understanding of the interaction between the laser and the sample surface leading to the formation of the high temperature plasma (plume) is far from complete. To better understand the process of plume formation, an imaging method based on acousto-optic laser beam deflection has been coupled with light scattering methods and absorption methods to record temporal and spatial maps of the particle and molecule distributions in the plume with good resolution. Because particles can make up a major fraction of the vaporized material under certain operating conditions, they can reflect a large loss of atomic signal for elemental analysis, even when using auxiliary excitation to further vaporized the particles. Characterization of the particle size distributions in plumes should provide insight into the vaporization process and information necessary for studies of efficient particle transfer. Light scattering methods for particle size analysis based on the Mie Theory are used to determine the size of particles in single laser-generated plumes. The methods used, polarization ratio method and dissymmetry ratio method, provide good estimates of particle size with good spatial and temporal resolution for this highly transient system. Large particles, on the order of 0.02-0.2{mu}m in radius, were observed arising directly from the sample surface and from condensation.

  12. Generation of potential/surface density pairs in flat disks Power law distributions

    E-Print Network [OSTI]

    J. -M. Hure; D. Pelat; A. Pierens

    2007-06-25T23:59:59.000Z

    We report a simple method to generate potential/surface density pairs in flat axially symmetric finite size disks. Potential/surface density pairs consist of a ``homogeneous'' pair (a closed form expression) corresponding to a uniform disk, and a ``residual'' pair. This residual component is converted into an infinite series of integrals over the radial extent of the disk. For a certain class of surface density distributions (like power laws of the radius), this series is fully analytical. The extraction of the homogeneous pair is equivalent to a convergence acceleration technique, in a matematical sense. In the case of power law distributions, the convergence rate of the residual series is shown to be cubic inside the source. As a consequence, very accurate potential values are obtained by low order truncation of the series. At zero order, relative errors on potential values do not exceed a few percent typically, and scale with the order N of truncation as 1/N**3. This method is superior to the classical multipole expansion whose very slow convergence is often critical for most practical applications.

  13. Renewable Energy Production Tax Credit (Corporate)

    Broader source: Energy.gov [DOE]

    Enacted in 2002, the New Mexico Renewable Energy Production Tax Credit provides a tax credit against the corporate income tax of one cent per kilowatt-hour for companies that generate electricity...

  14. Renewable Energy Production Tax Credit (Personal)

    Broader source: Energy.gov [DOE]

    Enacted in 2002, the New Mexico Renewable Energy Production Tax Credit provides a tax credit against the personal income tax of one cent per kilowatt-hour for companies that generate electricity...

  15. A Better Steam Engine: Designing a Distributed Concentrating Solar Combined Heat and Power System

    E-Print Network [OSTI]

    Norwood, Zachary Mills

    2011-01-01T23:59:59.000Z

    renewable and non-renewable energy systems including its global warming potential (potential for deep market penetration of renewable distributed energy

  16. Feasibility Study of Economics and Performance of Biomass Power Generation at the Former Farmland Industries Site in Lawrence, Kansas. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites

    SciTech Connect (OSTI)

    Tomberlin, G.; Mosey, G.

    2013-03-01T23:59:59.000Z

    Under the RE-Powering America's Land initiative, the U.S. Environmental Protection Agency (EPA) provided funding to the National Renewable Energy Laboratory (NREL) to support a feasibility study of biomass renewable energy generation at the former Farmland Industries site in Lawrence, Kansas. Feasibility assessment team members conducted a site assessment to gather information integral to this feasibility study. Information such as biomass resources, transmission availability, on-site uses for heat and power, community acceptance, and ground conditions were considered.

  17. Power Systems Engineering Research Center Renewable Electricity Futures

    E-Print Network [OSTI]

    Van Veen, Barry D.

    Power Systems Engineering Research Center Renewable Electricity Futures Trieu Mai Electricity of the extent to which renewable energy supply can meet the electricity demands of the contiguous United States renewable electricity generation levels: from 30% up to 90% (focusing on 80%) of all U.S. electricity

  18. Renewable Energy Microgrid Testbed at NASA Ames Research

    E-Print Network [OSTI]

    Lee, Herbie

    Renewable Energy Microgrid Testbed at NASA Ames Research Center Joel Kubby, Dan O'Leary, Zachary #12;Goals · Set-up a unique microgrid test-bed for renewable energy generation, monitoring and storage · Use the facility for testing systems integration, optimization and control of new renewable energy

  19. 38 renewable energy focus July/August 2009 Feature article

    E-Print Network [OSTI]

    Hampshire, Damian

    38 renewable energy focus July/August 2009 Feature article Compact electrical generators.: Illustration shows magnified view of high temperature superconductor cable. #12;renewable energy focus July/August 2009 39 Renewable energy/infrastructure there has been excitement about superconductivity. The sting

  20. Quadratic Control of Stochastic Hybrid Systems with Renewal Transitions

    E-Print Network [OSTI]

    Hespanha, João Pedro

    Quadratic Control of Stochastic Hybrid Systems with Renewal Transitions Farshad R. Pour Safaei a, semi-Markov processes, optimal control, stochastic hybrid systems, renewal transitions 1 Introduction probability distributions other than the exponential. We consider a Stochastic Hybrid System with renewal

  1. Renewable Electricity Futures Study

    E-Print Network [OSTI]

    Renewable Electricity Futures Study Executive Summary NREL is a national laboratory of the U for Sustainable Energy, LLC. Volume 2 PDF Volume 3 PDF Volume 1 PDF Volume 4 PDF #12;Renewable Electricity Futures. National Renewable Energy Laboratory Suggested Citations Renewable Electricity Futures Study (Entire Report

  2. Renewable Electricity Futures Study

    E-Print Network [OSTI]

    Renewable Electricity Futures Study Bulk Electric Power Systems: Operations and Transmission by the Alliance for Sustainable Energy, LLC. #12;Renewable Electricity Futures Study Edited By Hand, M.M. National Suggested Citations Renewable Electricity Futures Study (Entire Report) National Renewable Energy Laboratory

  3. Purchasing Renewable Power

    Broader source: Energy.gov [DOE]

    Federal agencies can purchase renewable power or renewable energy certificates (RECs) from a utility or other organization to meet Federal renewable energy requirements. Renewable power and RECs are good choices for facilities where on-site projects may be difficult or capital budgets are limited.

  4. National Renewable Energy Laboratory

    E-Print Network [OSTI]

    National Renewable Energy Laboratory Innovation for Our Energy Future ponsorship Format Reversed Color:White rtical Format Reversed-A ertical Format Reversed-B National Renewable Energy Laboratory National Renewable Energy Laboratory Innovation for Our Energy Future National Renewable Energy Laboratory

  5. NEW RENEWABLE FACILITIES PROGRAM

    E-Print Network [OSTI]

    for and receive production incentives, referred to as supplemental energy payments (SEPs), from the New RenewableCALIFORNIA ENERGY COMMISSION NEW RENEWABLE FACILITIES PROGRAM GUIDEBOOK APRIL 2006 CEC-300 Director Heather Raitt Technical Director Renewable Energy Program Drake Johnson Office Manager Renewable

  6. Distributed Dynamic State Estimator, Generator Parameter Estimation and Stability Monitoring Demonstration

    SciTech Connect (OSTI)

    Meliopoulos, Sakis; Cokkinides, George; Fardanesh, Bruce; Hedrington, Clinton

    2013-12-31T23:59:59.000Z

    This is the final report for this project that was performed in the period: October1, 2009 to June 30, 2013. In this project, a fully distributed high-fidelity dynamic state estimator (DSE) that continuously tracks the real time dynamic model of a wide area system with update rates better than 60 times per second is achieved. The proposed technology is based on GPS-synchronized measurements but also utilizes data from all available Intelligent Electronic Devices in the system (numerical relays, digital fault recorders, digital meters, etc.). The distributed state estimator provides the real time model of the system not only the voltage phasors. The proposed system provides the infrastructure for a variety of applications and two very important applications (a) a high fidelity generating unit parameters estimation and (b) an energy function based transient stability monitoring of a wide area electric power system with predictive capability. Also the dynamic distributed state estimation results are stored (the storage scheme includes data and coincidental model) enabling an automatic reconstruction and “play back” of a system wide disturbance. This approach enables complete play back capability with fidelity equal to that of real time with the advantage of “playing back” at a user selected speed. The proposed technologies were developed and tested in the lab during the first 18 months of the project and then demonstrated on two actual systems, the USVI Water and Power Administration system and the New York Power Authority’s Blenheim-Gilboa pumped hydro plant in the last 18 months of the project. The four main thrusts of this project, mentioned above, are extremely important to the industry. The DSE with the achieved update rates (more than 60 times per second) provides a superior solution to the “grid visibility” question. The generator parameter identification method fills an important and practical need of the industry. The “energy function” based transient stability monitoring opens up new ways to protect the power grid, better manage disturbances, confine their impact and in general improve the reliability and security of the system. Finally, as a by-product of the proposed research project, the developed system is able to “play back” disturbances by a click of a mouse. The importance of this by-product is evident by considering the tremendous effort exerted after the August 2003 blackout to piece together all the disturbance recordings, align them and recreate the sequence of events. This project has moved the state of art from fault recording by individual devices to system wide disturbance recording with “play back” capability.

  7. Renewable Energy in India: Status and future Potential

    E-Print Network [OSTI]

    Banerjee, Rangan

    Thermal Solar Photovoltaic Tidal Wave Ocean Thermal #12;Power Generation Options Power Generation environmental impacts Unsustainable Need for transition to renewable energy systems, nuclear, efficiency #12 Side Management (Solar Water Heater, Passive Solar) #12;Renewables in Power Power generation 6500 PJ

  8. Photovoltaics at DOE's National Renewable Energy Laboratory License...

    Office of Environmental Management (EM)

    INSTALLATION AND OPERATION OF A SOLAR ROOF-TOP ELECTRIC GENERATING SYSTEM AT THE NATIONAL RENEWABLE ENERGY LABORATORY, RESEARCH SUPPORT FACILITY United States of America Department...

  9. Renewable Energy World Conference and Expo North America

    Broader source: Energy.gov [DOE]

    Renewable Energy World Conference & Expo North America will be co-located with Power Generation Week, providing networking opportunities with 20,000+ professionals and key decision makers.

  10. Changes in the Economic Value of Variable Generation at High Penetration Levels: A Pilot Case Study of California

    E-Print Network [OSTI]

    Mills, Andrew D.

    2014-01-01T23:59:59.000Z

    and public economics of renewable electricity generation.CP-550-48247, National Renewable Energy Laboratory, Golden,decisions in the Western Renewable Energy Zone initiative.

  11. Index for the Evaluation of Distributed Generation Impacts on Distribution System Luis F. Ochoa (1,2)

    E-Print Network [OSTI]

    Harrison, Gareth

    decisions that lead to the best management of the system, regarding both technical and economical aspects. Various studies have demonstrated that integration of DG in distribution networks may create technical in voltage control processes, diminish or increase losses, etc. In fact, all our knowledge about distribution

  12. Informational and Causal Architecture of Discrete-Time Renewal Processes

    E-Print Network [OSTI]

    Sarah Marzen; James P. Crutchfield

    2014-11-09T23:59:59.000Z

    Renewal processes are broadly used to model stochastic behavior consisting of isolated events separated by periods of quiescence, whose durations are specified by a given probability law. Here, we identify the minimal sufficient statistic for their prediction (the set of causal states), calculate the historical memory capacity required to store those states (statistical complexity), delineate what information is predictable (excess entropy), and decompose the entropy of a single measurement into that shared with the past, future, or both. The causal state equivalence relation defines a new subclass of renewal processes with a finite number of causal states despite having an unbounded interevent count distribution. We use these formulae to analyze the output of the parametrized Simple Nonunifilar Source, generated by a simple two-state hidden Markov model, but with an infinite-state epsilon-machine presentation. All in all, the results lay the groundwork for analyzing processes with infinite statistical complexity and infinite excess entropy.

  13. Choosing the Right Technologies A Model for Cost Optimized Design of a Renewable

    E-Print Network [OSTI]

    Berning, Torsten

    -term generation scheduling for a renewable micro-grid using a hydrogen storage system. Mario Petrollese; Giorgio

  14. Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation

    E-Print Network [OSTI]

    Bolinger, Mark; Wiser, Ryan; Golove, William

    2003-01-01T23:59:59.000Z

    vs. AEO 2001 Price Forecast Natural Gas Price (nominal $/if forwards forecasts) or natural gas-fired generation (ifs reference case forecast of natural gas prices delivered to

  15. Gas-Fired Distributed Energy Resource Technology Characterizations

    SciTech Connect (OSTI)

    Goldstein, L.; Hedman, B.; Knowles, D.; Freedman, S. I.; Woods, R.; Schweizer, T.

    2003-11-01T23:59:59.000Z

    The U. S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) is directing substantial programs in the development and encouragement of new energy technologies. Among them are renewable energy and distributed energy resource technologies. As part of its ongoing effort to document the status and potential of these technologies, DOE EERE directed the National Renewable Energy Laboratory to lead an effort to develop and publish Distributed Energy Technology Characterizations (TCs) that would provide both the department and energy community with a consistent and objective set of cost and performance data in prospective electric-power generation applications in the United States. Toward that goal, DOE/EERE - joined by the Electric Power Research Institute (EPRI) - published the Renewable Energy Technology Characterizations in December 1997.As a follow-up, DOE EERE - joined by the Gas Research Institute - is now publishing this document, Gas-Fired Distributed Energy Resource Technology Characterizations.

  16. Distributed Generation Potential of the U.S. CommercialSector

    SciTech Connect (OSTI)

    LaCommare, Kristina Hamachi; Edwards, Jennifer L.; Gumerman,Etan; Marnay, Chris

    2005-06-01T23:59:59.000Z

    Small-scale (100 kW-5 MW) on-site distributed generation (DG) economically driven by combined heat and power (CHP) applications and, in some cases, reliability concerns will likely emerge as a common feature of commercial building energy systems in developed countries over the next two decades. In the U.S., private and public expectations for this technology are heavily influenced by forecasts published by the Energy Information Administration (EIA), most notably the Annual Energy Outlook (AEO). EIA's forecasts are typically made using the National Energy Modeling System (NEMS), which has a forecasting module that predicts the penetration of several possible commercial building DG technologies over the period 2005-2025. Annual penetration is forecast by estimating the payback period for each technology, for each of a limited number of representative building types, for each of nine regions. This process results in an AEO2004 forecast deployment of about a total 3 GW of DG electrical generating capacity by 2025, which is only 0.25 percent of total forecast U.S. capacity. Analyses conducted using both the AEO2003 and AEO2004 versions of NEMS changes the baseline costs and performance characteristics of DG to reflect a world without U.S. Department of Energy (DOE) research into several thermal DG technologies, which is then compared to a case with enhanced technology representative of the successful achievement of DOE research goals. The net difference in 2025 DG penetration is dramatic using the AEO2003 version of NEMS, but much smaller in the AEO2004 version. The significance and validity of these contradictory results are discussed, and possibilities for improving estimates of commercial U.S. DG potential are explored.

  17. Natural Innovative Renewable Energy formerly Northwest Iowa Renewable...

    Open Energy Info (EERE)

    Natural Innovative Renewable Energy formerly Northwest Iowa Renewable Energy Jump to: navigation, search Name: Natural Innovative Renewable Energy (formerly Northwest Iowa...

  18. FEMTOSECOND TIMING DISTRIBUTION AND CONTROL FOR NEXT GENERATION ACCELERATORS AND LIGHT SOURCES

    SciTech Connect (OSTI)

    Chen, Li-Jin [Idesta Quantum Electronics, LLC

    2014-03-31T23:59:59.000Z

    Femtosecond Timing Distribution At LCLS Free-electron-lasers (FEL) have the capability of producing high photon flux from the IR to the hard x-ray wavelength range and to emit femtosecond and eventually even at-tosecond pulses. This makes them an ideal tool for fundamental as well as applied re-search. Timing precision at the Stanford Linear Coherent Light Source (LCLS) between the x-ray FEL (XFEL) and ultrafast optical lasers is currently no better than 100 fs RMS. Ideally this precision should be much better and could be limited only by the x-ray pulse duration, which can be as short as a few femtoseconds. An increasing variety of science problems involving electron and nuclear dynamics in chemical and material systems will become accessible as the timing improves to a few femtoseconds. Advanced methods of electron beam conditioning or pulse injection could allow the FEL to achieve pulse durations less than one femtosecond. The objec-tive of the work described in this proposal is to set up an optical timing distribution sys-tem based on modelocked Erbium doped fiber lasers at LCLS facility to improve the timing precision in the facility and allow time stamping with a 10 fs precision. The primary commercial applications for optical timing distributions systems are seen in the worldwide accelerator facilities and next generation light sources community. It is reasonable to expect that at least three major XFELs will be built in the next decade. In addition there will be up to 10 smaller machines, such as FERMI in Italy and Maxlab in Sweden, plus the market for upgrading already existing facilities like Jefferson Lab. The total market is estimated to be on the order of a 100 Million US Dollars. The company owns the exclusive rights to the IP covering the technology enabling sub-10 fs synchronization systems. Testing this technology, which has set records in a lab environment, at LCLS, hence in a real world scenario, is an important corner stone of bringing the technology to market.

  19. Renewable energy annual 1996

    SciTech Connect (OSTI)

    NONE

    1997-03-01T23:59:59.000Z

    This report presents summary data on renewable energy consumption, the status of each of the primary renewable technologies, a profile of each of the associated industries, an analysis of topical issues related to renewable energy, and information on renewable energy projects worldwide. It is the second in a series of annual reports on renewable energy. The renewable energy resources included in the report are biomass (wood and ethanol); municipal solid waste, including waste-to-energy and landfill gas; geothermal; wind; and solar energy, including solar thermal and photovoltaic. The report also includes various appendices and a glossary.

  20. Alaska's renewable energy potential.

    SciTech Connect (OSTI)

    Not Available

    2009-02-01T23:59:59.000Z

    This paper delivers a brief survey of renewable energy technologies applicable to Alaska's climate, latitude, geography, and geology. We first identify Alaska's natural renewable energy resources and which renewable energy technologies would be most productive. e survey the current state of renewable energy technologies and research efforts within the U.S. and, where appropriate, internationally. We also present information on the current state of Alaska's renewable energy assets, incentives, and commercial enterprises. Finally, we escribe places where research efforts at Sandia National Laboratories could assist the state of Alaska with its renewable energy technology investment efforts.

  1. FEMP Renewable Energy Overview

    SciTech Connect (OSTI)

    Not Available

    2003-06-01T23:59:59.000Z

    This four-page overview describes how Federal agencies can contact the Department of Energy's Federal Energy Management Program (FEMP) to obtain assistance in acquiring renewable energy systems, renewable fuels, and renewable ("green") power for use in their facilities and vehicles. Renewable resources, technologies, and fuels are described, as well as Federal goals for using clean, sustainable renewable energy; the current goal is to supply 2.5% of the Federal Government's energy with renewable sources by 2005. Also included is a description of the resources and technologies themselves and associated benefits.

  2. Retrospective modeling of the merit-order effect on wholesale electricity prices from distributed photovoltaic generation in the

    E-Print Network [OSTI]

    Sandiford, Mike

    Retrospective modeling of the merit-order effect on wholesale electricity prices from distributed, the depression in wholesale prices has significant value. c 5 GW of solar generation would have saved $1.8 billion in the market over two years. c The depression of wholesale prices offsets the cost of support

  3. Renewable Electricity Futures Study. Volume 1: Exploration of High-Penetration Renewable Electricity Futures

    SciTech Connect (OSTI)

    Mai, T.; Wiser, R.; Sandor, D.; Brinkman, G.; Heath, G.; Denholm, P.; Hostick, D.J.; Darghouth, N.; Schlosser, A.; Strzepek, K.

    2012-06-01T23:59:59.000Z

    The Renewable Electricity Futures (RE Futures) Study investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. The analysis focused on the sufficiency of the geographically diverse U.S. renewable resources to meet electricity demand over future decades, the hourly operational characteristics of the U.S. grid with high levels of variable wind and solar generation, and the potential implications of deploying high levels of renewables in the future. RE Futures focused on technical aspects of high penetration of renewable electricity; it did not focus on how to achieve such a future through policy or other measures. Given the inherent uncertainties involved with analyzing alternative long-term energy futures as well as the multiple pathways that might be taken to achieve higher levels of renewable electricity supply, RE Futures explored a range of scenarios to investigate and compare the impacts of renewable electricity penetration levels (30%-90%), future technology performance improvements, potential constraints to renewable electricity development, and future electricity demand growth assumptions. RE Futures was led by the National Renewable Energy Laboratory (NREL) and the Massachusetts Institute of Technology (MIT).

  4. The strategic use of renewables to achieve demand-side management impact

    SciTech Connect (OSTI)

    Carlisle, N.; Hauser, S.; Potter, T.; Westby, R.

    1992-11-01T23:59:59.000Z

    According to both the Electric Power Research Institute (EPRI) and the Edison Electric Institute (EEI), utilities in the United States are now spending about $2 billion per year on demand-side management (DSM) activities. By the year 2000, EPRI and EEI predict that utilities will be spending $10 to $15 billion per year on DSM. If this expenditure is matched by consumers, total expenditures -- $30 billion a year -- will equal what the nation spent on power plant construction during the peak 1970s power plant building era. Historically, DSM programs at utilities utilize technologies that reduce the demand for electricity and energy used by their customers. This is accomplished primarily by increasing the efficacy of lighting, improving the conversion efficiency of heating, cooling, and process equipment, and reducing thermal losses through the building envelope. A broader definition of DSM -- one that incorporates renewable energy resources -- will greatly enhance the opportunity to impact customer loads. Renewable energy technologies use resources that are not depleted, such as heat and light from the sun, the force of winds, falling water, biomass, and geothermal heat from the earth. As related to utility systems, renewable technologies can contribute in three main ways: (1) the more traditional ``supply-side`` role as central generating plants or independent power producers, (2) as distributed generation (supply-side variation), and (3) as demand-side options. Distributed generation is being seriously studied by several utilities as a means of serving remote loads and reducing transmission and distribution costs, but is not discussed further in this paper. Demand-side renewable technologies (DSR) are technologies that utilize renewable energy to reduce the end-use load of a customer. In this paper we will describe specific DSR options, characterize their potential load impact, and recommend a method for effectively integrating them into current DSM programs.

  5. State Renewable Energy Requirements and Goals: Update Through 2003 (released in AEO2005)

    Reports and Publications (EIA)

    2005-01-01T23:59:59.000Z

    As of the end of 2003, 15 states had legislated programs to encourage the development of renewable energy for electricity generation. Of the 17 programs (two states have multiple programs), 9 are renewable portfolio standards (RPS), 4 are renewable energy mandates, and 4 are renewable energy goals.

  6. Renewable Energy Trust Fund

    Broader source: Energy.gov [DOE]

    The renewable energy fund, known as the Massachusetts Renewable Energy Trust Fund, is supported by a non-bypassable surcharge of $0.0005 per kilowatt-hour (0.5 mill/kWh), imposed on customers of...

  7. Assessing Renewable Energy Options

    Broader source: Energy.gov [DOE]

    Federal agencies should assess renewable energy options for each specific project when integrating renewable energy in new building construction or major renovations. This section covers the preliminary screening, screening, feasibility study, and sizing and designing systems phases.

  8. Estimating Renewable Energy Costs

    Broader source: Energy.gov [DOE]

    Some renewable energy measures, such as daylighting, passive solar heating, and cooling load avoidance, do not add much to the cost of a building. However, renewable energy technologies typically...

  9. Phasing Renewable Energy Implementation

    Broader source: Energy.gov [DOE]

    If conventional or other renewable energy funding cannot be procured, or if an agency is working towards a higher goal for renewable energy usage that cannot be met with the current budget,...

  10. The Renewable Energy Footprint

    E-Print Network [OSTI]

    Outka, Uma

    2011-01-01T23:59:59.000Z

    With the shift toward renewable energy comes the potential for staggering land impacts – many millions of acres may be consumed to meet demand for electricity and fuel over the next 20 years. To conservationists’ dismay, the more renewable energy we...

  11. Renewables and Sector Partnerships

    Office of Energy Efficiency and Renewable Energy (EERE)

    U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) Community Renewable Energy Success Stories Webinar series presentation by Susanna Sutherland, City of Knoxville, Tennessee, on financing solar energy systems.

  12. Proposal for the award of a contract for the supply and maintenance of six 380 V 50 Hz diesel generators for the LEP electrical distribution system

    E-Print Network [OSTI]

    1986-01-01T23:59:59.000Z

    Proposal for the award of a contract for the supply and maintenance of six 380 V 50 Hz diesel generators for the LEP electrical distribution system

  13. INFORMATION FOR RENEWABLE ENERGY

    E-Print Network [OSTI]

    ENHANCING INFORMATION FOR RENEWABLE ENERGY TECHNOLOGY DEPLOYMENT IN BRAZIL, CHINA, AND SOUTH AFRICA UNITEDNATIONSENERGYPROGRAMME #12;#12;Enhancing Information for Renewable Energy Technology Deployment in Brazil, China Palmer, JL Van Niekerk, Center for Renewable and Sustainable Energy Studies (CRSES) in South Africa E

  14. Renewable energy and telecommunications

    E-Print Network [OSTI]

    Renewable energy and telecommunications Case study: Energy Systems Week When AK Erlang first used fossil fuels and switch to renewable energy sources. But the unlikely convergence of the two fields lay to be able to deal with. "If we integrate renewable energies, such as wind power, in the electricity grid

  15. Modeling and Generating Daily Changes in Market Variables Using A Multivariate Mixture of Normal Distributions

    E-Print Network [OSTI]

    Wang, Jin

    Distributions Jin Wang Department of Mathematics and Computer Science Valdosta State University Valdosta, GA 31698-0040 January 28, 2000 Abstract The mixture of normal distributions provides a useful extension of the normal distribution for modeling of daily changes in market variables with fatter-than-normal tails

  16. Rate of convergence of the short cycle distribution in random regular graphs generated by pegging

    E-Print Network [OSTI]

    Wormald, Nick

    of the random network (degree distribution, connectivity, diameter, etc.) vary when p is assigned different values. However, the Erdos-R´enyi model cannot produce scale-free networks [2], whose degree distribution, the stationary distribution is uniform. Thus, for this simplified version of the SWAN network, the limiting

  17. THE GALACTIC SPATIAL DISTRIBUTION OF OB ASSOCIATIONS AND THEIR SURROUNDING SUPERNOVA-GENERATED SUPERBUBBLES

    SciTech Connect (OSTI)

    Higdon, J. C. [W. M. Keck Science Center, Claremont Colleges, Claremont, CA 91711-5916 (United States); Lingenfelter, R. E., E-mail: jhigdon@kecksci.claremont.edu, E-mail: rlingenfelter@ucsd.edu [Center for Astrophysics and Space Sciences, University of California San Diego, La Jolla, CA 92093 (United States)

    2013-10-01T23:59:59.000Z

    The Galactic spatial distribution of OB associations and their surrounding superbubbles (SBs) reflect the distribution of a wide range of important processes in our Galaxy. In particular, it can provide a three-dimensional measure not only of the major source distribution of Galactic cosmic rays, but also the Galactic star formation distribution, the Lyman continuum ionizing radiation distribution, the core-collapse supernova distribution, the neutron star and stellar black hole production distribution, and the principal source distribution of freshly synthesized elements. Thus, we construct a three-dimensional spatial model of the massive-star distribution based primarily on the emission of the H II envelopes that surround the giant SBs and are maintained by the ionizing radiation of the embedded O stars. The Galactic longitudinal distribution of the 205 ?m N II radiation, emitted by these H II envelopes, is used to infer the spatial distribution of SBs. We find that the Galactic SB distribution is dominated by the contribution of massive-star clusters residing in the spiral arms.

  18. COMMISSION GUIDEBOOK RENEWABLE ENERGY PROGRAM

    E-Print Network [OSTI]

    COMMISSION GUIDEBOOK RENEWABLE ENERGY PROGRAM OVERALL PROGRAM GUIDEBOOK Fourth Edition Manager Renewable Energy Office G. William Pennington Acting Deputy Director Efficiency and Renewable of how the Energy Commission's Renewable Energy Program is administered and outlines terms

  19. Recharging U.S. Energy Policy: Advocating for a National Renewable Portfolio Standard

    E-Print Network [OSTI]

    Lunt, Robin J.

    2007-01-01T23:59:59.000Z

    Wind Energy Assoc. (1997), http:// www.awea.org/policy/ENERGY POLICY From the renewable generator's perspective, WindPolicy Act as *'electric energy generated from solar, wind,

  20. Sandia National Laboratories: Renewable Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Power Groups, Organizations, and Associations Australian Clean Energy Council Marine Renewable Energy (BWEA) California Energy Commission Energy Efficiency and Renewable...

  1. Renewable Energy Opportunities at Fort Sill, Oklahoma

    SciTech Connect (OSTI)

    Boyd, Brian K.; Hand, James R.; Horner, Jacob A.; Orrell, Alice C.; Russo, Bryan J.; Weimar, Mark R.; Nesse, Ronald J.

    2011-03-31T23:59:59.000Z

    This document provides an overview of renewable resource potential at Fort Sill, based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations. This effort focuses on grid-connected generation of electricity from renewable energy sources and on ground source heat pumps for heating and cooling buildings. The effort was funded by the U.S. Army Installation Management Command (IMCOM) as follow-on to the 2005 Department of Defense (DoD) Renewables Assessment. The site visit to Fort Sill took place on June 10, 2010.

  2. Renewable Energy Opportunities at Fort Polk, Louisiana

    SciTech Connect (OSTI)

    Solana, Amy E.; Boyd, Brian K.; Horner, Jacob A.; Gorrissen, Willy J.; Orrell, Alice C.; Weimar, Mark R.; Hand, James R.; Russo, Bryan J.; Williamson, Jennifer L.

    2010-11-17T23:59:59.000Z

    This document provides an overview of renewable resource potential at Fort Polk, based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations. This effort focuses on grid-connected generation of electricity from renewable energy sources and also on ground source heat pumps for heating and cooling buildings. The effort was funded by the U.S. Army Installation Management Command (IMCOM) as follow-on to the 2005 Department of Defense (DoD) Renewables Assessment. The site visit to Fort Polk took place on February 16, 2010.

  3. Creative renewable energy purchasing options for businesses

    SciTech Connect (OSTI)

    Lokey, Elizabeth

    2007-01-15T23:59:59.000Z

    Green energy providers are creating novel ways for large commercial clients to get involved in the long-term development of renewable energy generation. Some plans are designed to allow the purchase of energy to provide long-term off-take stability and other financial benefits to companies developing renewable energy projects. Two new insurance products could help absorb some of the financial risk taken on by the clients. (author)

  4. The renewable electric plant information system

    SciTech Connect (OSTI)

    Sinclair, K.

    1995-12-01T23:59:59.000Z

    This report explains the procedures used for creating the Renewable Electric Plant Information System (REPiS) database, describes the database fields, and summarizes the data. The REPiS database contains comprehensive information on grid-connected renewable electric generation plants in the United States. Originally designed in 1987 and updated in 1990, the database includes information through 1994. The report also illustrates ways of using the data for analysis is and describes how researchers validated the data.

  5. Renewable energy annual 1995

    SciTech Connect (OSTI)

    NONE

    1995-12-01T23:59:59.000Z

    The Renewable Energy Annual 1995 is the first in an expected series of annual reports the Energy Information Administration (EIA) intends to publish to provide a comprehensive assessment of renewable energy. This report presents the following information on the history, status, and prospects of renewable energy data: estimates of renewable resources; characterizations of renewable energy technologies; descriptions of industry infrastructures for individual technologies; evaluations of current market status; and assessments of near-term prospects for market growth. An international section is included, as well as two feature articles that discuss issues of importance for renewable energy as a whole. The report also contains a number of technical appendices and a glossary. The renewable energy sources included are biomass (wood), municipal solid waste, biomass-derived liquid fuels, geothermal, wind, and solar and photovoltaic.

  6. An Electricity Trade Model for Multiple Power Distribution Networks in Smart Energy Systems

    E-Print Network [OSTI]

    Pedram, Massoud

    . A microgrid is a small scale power network, which contains one or multiple types of renewable power generators complicated with the adoption of energy storage [5]. For a power network, the amount of energy generationAn Electricity Trade Model for Multiple Power Distribution Networks in Smart Energy Systems

  7. Real-time Pricing Leading to Optimal Operation under Distributed Decision Makings

    E-Print Network [OSTI]

    Hespanha, João Pedro

    such as renewable, micro-combined heat and power systems as well as energy storage systems such as batteries and development on the future power grid in which small but variety and a huge number of distributed generators, since the legacy power grid is intended for delivering energy from centralized power generators

  8. Utility Grid-Connected Distributed Power Systems National Solar Energy Conference

    E-Print Network [OSTI]

    Utility Grid-Connected Distributed Power Systems National Solar Energy Conference ASES Solar 96 at least half of its energy obtained from energy efficiency and renewable resources by the year 2000. Solar energy, distributed generation resource. Investments made in solar power today are expected to provide

  9. Research in Energy Systems Integration at the National Renewable Energy Laboratory

    E-Print Network [OSTI]

    Research in Energy Systems Integration at the National Renewable Energy Laboratory Speaker: Dr, renewable energy, and distributed energy resources. These efforts have started new industries Renewable Energy Laboratory in Golden, CO, where he leads a group that performs research in distributed

  10. Renewable energy in Indian country

    SciTech Connect (OSTI)

    NONE

    1995-12-31T23:59:59.000Z

    On June 25--27, 1995, at Mesa Verde National Park in southwestern Colorado, the Center for Resource Management (CRM), organized and sponsored a conference in conjunction with the Navajo Nation, EPA, and Bechtel Group, Inc., to deal with issues associated with developing renewable energy resources on Indian lands. Due to the remoteness of many reservation homes and the cost of traditional power line extensions, a large percentage of the Indian population is today without electricity or other energy services. In addition, while they continue to develop energy resources for export, seeing only minimal gain in their own economies, Indian people are also subject to the health and environmental consequences associated with proximity to traditional energy resource development. Renewable energy technologies, on the other hand, are often ideally suited to decentralized, low-density demand. These technologies--especially solar and wind power--have no adverse health impacts associated with generation, are relatively low cost, and can be used in applications as small as a single home, meeting power needs right at a site. Their minimal impact on the environment make them particularly compatible with American Indian philosophies and lifestyles. Unfortunately, the match between renewable energy and Indian tribes has been hampered by the lack of a comprehensive, coordinated effort to identify renewable energy resources located on Indian lands, to develop practical links between Indian people`s needs and energy producers, and to provide the necessary training for tribal leaders and members to plan, implement, and maintain renewable energy systems. Summaries of the presentations are presented.

  11. Feasibility Study of Economics and Performance of Geothermal Power Generation at the Lakeview Uranium Mill Site in Lakeview, Oregon. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites

    SciTech Connect (OSTI)

    Hillesheim, M.; Mosey, G.

    2013-11-01T23:59:59.000Z

    The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Lakeview Uranium Mill site in Lakeview, Oregon, for a feasibility study of renewable energy production. The EPA contracted with the National Renewable Energy Laboratory (NREL) to provide technical assistance for the project. The purpose of this report is to describe an assessment of the site for possible development of a geothermal power generation facility and to estimate the cost, performance, and site impacts for the facility. In addition, the report recommends development pathways that could assist in the implementation of a geothermal power system at the site.

  12. The relationship between policy choice and the size of the policy region: Why small jurisdictions may prefer renewable energy policies to reduce CO2 emissions

    E-Print Network [OSTI]

    Accordino, Megan H.; Rajagopal, Deepak

    2012-01-01T23:59:59.000Z

    be generated by quali?ed renewable resources. In the U.S. ,production from renewable resources, the cost of reducing COrenewable and non-renewable resources. Burtraw et al. (2012)

  13. Distributed Generation versus Centralised Supply: a Social Cost-Benefit Analysis

    E-Print Network [OSTI]

    Gulli, Francesco

    2004-06-16T23:59:59.000Z

    Generation versus Centralised Supply: a Social Cost-Benefit Analysis Francesco Gullì* Istituto di Economia e Politica dell’Energia e dell’Ambiente (Iefe). Università Bocconi, Milano July 2003 1. Introduction #1; The restructuring and privatisation...

  14. Photon Science for Renewable Energy

    SciTech Connect (OSTI)

    Hussain, Zahid; Tamura, Lori; Padmore, Howard; Schoenlein, Bob; Bailey, Sue

    2010-03-31T23:59:59.000Z

    Our current fossil-fuel-based system is causing potentially catastrophic changes to our planet. The quest for renewable, nonpolluting sources of energy requires us to understand, predict, and ultimately control matter and energy at the electronic, atomic, and molecular levels. Light-source facilities - the synchrotrons of today and the next-generation light sources of tomorrow - are the scientific tools of choice for exploring the electronic and atomic structure of matter. As such, these photon-science facilities are uniquely positioned to jump-start a global revolution in renewable and carbonneutral energy technologies. In these pages, we outline and illustrate through examples from our nation's light sources possible scientific directions for addressing these profound yet urgent challenges.

  15. The potential for distributed generation in Japanese prototype buildings: A DER-CAM analysis of policy, tariff design, building energy use, and technology development (English Version)

    SciTech Connect (OSTI)

    Zhou, Nan; Marnay, Chris; Firestone, Ryan; Gao, Weijun; Nishida, Masaru

    2004-10-15T23:59:59.000Z

    The August 2003 blackout of the northeastern U.S. and CANADA caused great economic losses and inconvenience to New York City and other affected areas. The blackout was a warning to the rest of the world that the ability of conventional power systems to meet growing electricity demand is questionable. Failure of large power systems can lead to serious emergencies. Introduction of on-site generation, renewable energy such as solar and wind power and the effective utilization of exhaust heat is needed, to meet the growing energy demands of the residential and commercial sectors. Additional benefit can be achieved by integrating these distributed technologies into distributed energy resource (DER) systems. This work demonstrates a method for choosing and designing economically optimal DER systems. An additional purpose of this research is to establish a database of energy tariffs, DER technology cost and performance characteristics, and building energy consumption for Japan. This research builds on prior DER studies at the Ernest Orlando Lawrence Berkeley National Laboratory (LBNL) and with their associates in the Consortium for Electric Reliability Technology Solutions (CERTS) and operation, including the development of the microgrid concept, and the DER selection optimization program, the Distributed Energy Resources Customer Adoption Model (DER-CAM). DER-CAM is a tool designed to find the optimal combination of installed equipment and an idealized operating schedule to minimize a site's energy bills, given performance and cost data on available DER technologies, utility tariffs, and site electrical and thermal loads over a test period, usually an historic year. Since hourly electric and thermal energy data are rarely available, they are typically developed by building simulation for each of six end use loads used to model the building: electric-only loads, space heating, space cooling, refrigeration, water heating, and natural-gas-only loads. DER-CAM provides a global optimization, albeit idealized, that shows how the necessary useful energy loads can be provided for at minimum cost by selection and operation of on-site generation, heat recovery, cooling, and efficiency improvements. This study examines five prototype commercial buildings and uses DER-CAM to select the economically optimal DER system for each. The five building types are office, hospital, hotel, retail, and sports facility. Each building type was considered for both 5,000 and 10,000 square meter floor sizes. The energy consumption of these building types is based on building energy simulation and published literature. Based on the optimization results, energy conservation and the emissions reduction were also evaluated. Furthermore, a comparison study between Japan and the U.S. has been conducted covering the policy, technology and the utility tariffs effects on DER systems installations. This study begins with an examination of existing DER research. Building energy loads were then generated through simulation (DOE-2) and scaled to match available load data in the literature. Energy tariffs in Japan and the U.S. were then compared: electricity prices did not differ significantly, while commercial gas prices in Japan are much higher than in the U.S. For smaller DER systems, the installation costs in Japan are more than twice those in the U.S., but this difference becomes smaller with larger systems. In Japan, DER systems are eligible for a 1/3 rebate of installation costs, while subsidies in the U.S. vary significantly by region and application. For 10,000 m{sup 2} buildings, significant decreases in fuel consumption, carbon emissions, and energy costs were seen in the economically optimal results. This was most noticeable in the sports facility, followed the hospital and hotel. This research demonstrates that office buildings can benefit from CHP, in contrast to popular opinion. For hospitals and sports facilities, the use of waste heat is particularly effective for water and space heating. For the other building types, waste heat is most effectively use

  16. Evaluating Interventions in the U.S. Electricity System: Assessments of Energy Efficiency, Renewable Energy,

    E-Print Network [OSTI]

    of Energy Efficiency, Renewable Energy, and Small-Scale Cogeneration from electricity generation. Renewable energy, energy efficiency, and energy, where performance is measured relative to three objectives: energy production

  17. Renewables Intermittency: Operational Limits and Implications for Long-Term Energy System Models

    E-Print Network [OSTI]

    Delarue, E.

    In several regions of the world, the share of intermittent renewables (such as wind and solar PV) in electricity generation is rapidly increasing. The current share of these renewable energy sources (RES) can still more ...

  18. Differentiation Self-renewal

    E-Print Network [OSTI]

    Glyde, Henry R.

    Off state Ras Ras­GAP PI3K ERK1 ERK2 Differentiation SC1 SC1 Self-renewal Ras On state GDP GTP N NN, which promotes stem-cell self-renewal. Activated Ras also switches on the enzymes ERK1 and ERK2, which-cell renewal via the PI3K pathway. SC1 also inhibits ERK1 and ERK2, thus blocking stem-cell differentiation. PI

  19. Renewable Energy Renaissance Zones

    Broader source: Energy.gov [DOE]

    For the purposes of renaissance zone designation, “renewable energy facility” means a facility that creates energy, fuels, or chemicals directly from the wind, the sun, trees, grasses, biosolids,...

  20. Renewable Energy Standard

    Broader source: Energy.gov [DOE]

    In October 2008, Michigan enacted the Clean, Renewable, and Efficient Energy Act, Public Act 295, requiring the state's investor-owned utilities, alternative retail suppliers, electric cooperativ...