National Library of Energy BETA

Sample records for biomass bio-gas photovoltaic

  1. Bio Gas Technologies LTd | Open Energy Information

    Open Energy Info (EERE)

    Gas Technologies LTd Jump to: navigation, search Name: Bio-Gas Technologies LTd Place: Norwalk, Ohio Zip: 44857 Sector: Renewable Energy Product: Bio-gas Technologies is involved...

  2. Fuel Cells on Bio-Gas (Presentation)

    SciTech Connect (OSTI)

    Remick, R. J.

    2009-03-04

    The conclusions of this presentation are: (1) Fuel cells operating on bio-gas offer a pathway to renewable electricity generation; (2) With federal incentives of $3,500/kW or 30% of the project costs, reasonable payback periods of less than five years can be achieved; (3) Tri-generation of electricity, heat, and hydrogen offers an alternative route to solving the H{sub 2} infrastructure problem facing fuel cell vehicle deployment; and (4) DOE will be promoting bio-gas fuel cells in the future under its Market Transformation Programs.

  3. Photovoltaics

    SciTech Connect (OSTI)

    Solar Energy Technologies Program

    2010-09-28

    The fact sheet summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its photovoltaics subprogram.

  4. Photovoltaics

    SciTech Connect (OSTI)

    Not Available

    2008-09-01

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

  5. CNEEC - Photovoltaics Tutorial by Prof. Clemens

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

    Photovoltaics

  6. Photovoltaics

    SciTech Connect (OSTI)

    Ebisch, R.

    1981-07-01

    Applications of photovoltaics to non-residential buildings are discussed. Most of the projects underway represent a joint effort by DOE and fifteen manufacturing companies now offering or developing photovoltaics. The systems are either flat-plate arrays, in which the sunlight is received directly on the photocells, or concentrating systems, in which the sunlight is focused on the photocells by mirrors or lenses. The DOE price goal for 1986 is to have photovoltaic systems capable of supplying shopping centers, apartment complexes, and industries with modules costing 70 cents/W and systems costing $1.60 to $2.60/W with the price of power to the user at 7 cents to 11 cents/kWh. New technologies discussed include the use of silicon with no crystal structure and the use of ribbons of silicon. (MJF)

  7. Biomass

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

    Transportation Energy Co-Evolution of Biofuels Lignocellulosic Biomass Microalgae ... HomeBiomass Permalink One-Pot-to-Prep Biomass for Biofuels Biofuels, Biomass, Energy, ...

  8. BioGas Energy Inc | Open Energy Information

    Open Energy Info (EERE)

    Area Sector: Biomass Product: Makes anaerobic digesters that convert manure into methane for fuel Website: www.biogas-energy.comsiteind Coordinates: 47.6163159,...

  9. Photovoltaic Technology Basics | Department of Energy

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

    Addthis Related Articles Quiz: Test Your Solar IQ Energy 101: Solar Photovoltaics Photovoltaic Cell Basics Energy Basics Home Renewable Energy Biomass Geothermal Hydrogen & Fuel ...

  10. Photovoltaic device

    DOE Patents [OSTI]

    Reese, Jason A.; Keenihan, James R.; Gaston, Ryan S.; Kauffmann, Keith L.; Langmaid, Joseph A.; Lopez, Leonardo C.; Maak, Kevin D.; Mills, Michael E.; Ramesh, Narayan; Teli, Samar R.

    2015-06-02

    The present invention is premised upon an improved photovoltaic device ("PV device"), more particularly to an improved photovoltaic device with a multilayered photovoltaic cell assembly and a body portion joined at an interface region and including an intermediate layer, at least one interconnecting structural member, relieving feature, unique component geometry, or any combination thereof.

  11. Photovoltaic device

    SciTech Connect (OSTI)

    Reese, Jason A.; Keenihan, James R.; Gaston, Ryan S.; Kauffmann, Keith L.; Langmaid, Joseph A.; Lopez, Leonardo C.; Maak, Kevin D.; Mills, Michael E.; Ramesh, Narayan; Teli, Samar R.

    2015-09-01

    The present invention is premised upon an improved photovoltaic device ("PV device"), more particularly to an improved photovoltaic device (10) with a multilayered photovoltaic cell assembly (100) and a body portion (200) joined at an interface region (410) and including an intermediate layer (500), at least one interconnecting structural member (1500), relieving feature (2500), unique component geometry, or any combination thereof.

  12. Photovoltaics | Open Energy Information

    Open Energy Info (EERE)

    Photovoltaics (Redirected from Solar Photovoltaics) Jump to: navigation, search (The following text is derived from NREL's description of photovoltaic technology.)1 Photovoltaic...

  13. Photovoltaics | Open Energy Information

    Open Energy Info (EERE)

    Photovoltaics (Redirected from Photovoltaic) Jump to: navigation, search (The following text is derived from NREL's description of photovoltaic technology.)1 Photovoltaic Panels...

  14. Residential photovoltaics

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    The photovoltaics overview section of the Renewable Energy Technology Characterizations describes the technical and economic status of this emerging renewable energy option for electricity supply.

  15. Photovoltaic cell

    DOE Patents [OSTI]

    Gordon, Roy G.; Kurtz, Sarah

    1984-11-27

    In a photovoltaic cell structure containing a visibly transparent, electrically conductive first layer of metal oxide, and a light-absorbing semiconductive photovoltaic second layer, the improvement comprising a thin layer of transition metal nitride, carbide or boride interposed between said first and second layers.

  16. Photovoltaics | Open Energy Information

    Open Energy Info (EERE)

    Photovoltaics Jump to: navigation, search (The following text is derived from NREL's description of photovoltaic technology.)1 Photovoltaic Panels Solar cells, also called...

  17. Photovoltaics | Open Energy Information

    Open Energy Info (EERE)

    to: navigation, search (The following text is derived from NREL's description of photovoltaic technology.)1 Photovoltaic Panels Solar cells, also called photovoltaic (PV)...

  18. Tianda Photovoltaic Co Ltd Yunnan Tianda Photovoltaic | Open...

    Open Energy Info (EERE)

    Tianda Photovoltaic Co Ltd Yunnan Tianda Photovoltaic Jump to: navigation, search Name: Tianda Photovoltaic Co Ltd (Yunnan Tianda Photovoltaic) Place: Kunming, Yunnan Province,...

  19. Solar Photovoltaic Technologies - Energy Innovation Portal

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

    Technology Marketing Summaries Site Map Printable Version Share this resource About Search Categories (15) Advanced Materials Biomass and Biofuels Building Energy Efficiency Electricity Transmission Energy Analysis Energy Storage Geothermal Hydrogen and Fuel Cell Hydropower, Wave and Tidal Industrial Technologies Solar Photovoltaic Marketing Summaries (132) Success Stories (5) Solar Thermal Startup America Vehicles and Fuels Wind Energy Partners (27) Visual Patent Search Success Stories Browse

  20. NREL: Photovoltaics Research - Events

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

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

  1. China Solar Photovoltaic Group CNPV aka Dongying Photovoltaic...

    Open Energy Info (EERE)

    Group CNPV aka Dongying Photovoltaic Power Co Ltd or China Solar PV Jump to: navigation, search Name: China Solar Photovoltaic Group (CNPV, aka Dongying Photovoltaic Power Co Ltd...

  2. Photovoltaic solar concentrator

    SciTech Connect (OSTI)

    Nielson, Gregory N.; Cruz-Campa, Jose Luis; Okandan, Murat; Resnick, Paul J.; Sanchez, Carlos Anthony; Clews, Peggy J.; Gupta, Vipin P.

    2015-09-08

    A process including forming a photovoltaic solar cell on a substrate, the photovoltaic solar cell comprising an anchor positioned between the photovoltaic solar cell and the substrate to suspend the photovoltaic solar cell from the substrate. A surface of the photovoltaic solar cell opposite the substrate is attached to a receiving substrate. The receiving substrate may be bonded to the photovoltaic solar cell using an adhesive force or a metal connecting member. The photovoltaic solar cell is then detached from the substrate by lifting the receiving substrate having the photovoltaic solar cell attached thereto and severing the anchor connecting the photovoltaic solar cell to the substrate. Depending upon the type of receiving substrate used, the photovoltaic solar cell may be removed from the receiving substrate or remain on the receiving substrate for use in the final product.

  3. Nanostructured Photovoltaics: - Energy Innovation Portal

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

    Solar Photovoltaic Solar Photovoltaic Find More Like This Return to Search Nanostructured Photovoltaics: Atomic Layer Deposition Thin Film Technology Enables Cost Effective Solar ...

  4. American Photovoltaics | Open Energy Information

    Open Energy Info (EERE)

    Photovoltaics Jump to: navigation, search Logo: American Photovoltaics Name: American Photovoltaics Place: Houston, Texas Zip: 77002 Region: Texas Area Sector: Solar Product: Will...

  5. Biomass pretreatment

    DOE Patents [OSTI]

    Hennessey, Susan Marie; Friend, Julie; Elander, Richard T; Tucker, III, Melvin P

    2013-05-21

    A method is provided for producing an improved pretreated biomass product for use in saccharification followed by fermentation to produce a target chemical that includes removal of saccharification and or fermentation inhibitors from the pretreated biomass product. Specifically, the pretreated biomass product derived from using the present method has fewer inhibitors of saccharification and/or fermentation without a loss in sugar content.

  6. NREL: Photovoltaics Research - Concentrator Photovoltaic (CPV...

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

    Concentrator Photovoltaic (CPV) Report - Fraunhofer ISE and NREL Analyze Status of Market and Technology February 4, 2015 The German Fraunhofer Institute for Solar Energy Systems...

  7. Solar Photovoltaic Technologies Available for Licensing - Energy Innovation

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

    Portal Photovoltaic Site Map Printable Version Share this resource About Search Categories (15) Advanced Materials Biomass and Biofuels Building Energy Efficiency Electricity Transmission Energy Analysis Energy Storage Geothermal Hydrogen and Fuel Cell Hydropower, Wave and Tidal Industrial Technologies Solar Photovoltaic Marketing Summaries (132) Success Stories (5) Solar Thermal Startup America Vehicles and Fuels Wind Energy Partners (27) Visual Patent Search Success Stories Browse Solar

  8. Biomass Logistics

    SciTech Connect (OSTI)

    J. Richard Hess; Kevin L. Kenney; William A. Smith; Ian Bonner; David J. Muth

    2015-04-01

    Equipment manufacturers have made rapid improvements in biomass harvesting and handling equipment. These improvements have increased transportation and handling efficiencies due to higher biomass densities and reduced losses. Improvements in grinder efficiencies and capacity have reduced biomass grinding costs. Biomass collection efficiencies (the ratio of biomass collected to the amount available in the field) as high as 75% for crop residues and greater than 90% for perennial energy crops have also been demonstrated. However, as collection rates increase, the fraction of entrained soil in the biomass increases, and high biomass residue removal rates can violate agronomic sustainability limits. Advancements in quantifying multi-factor sustainability limits to increase removal rate as guided by sustainable residue removal plans, and mitigating soil contamination through targeted removal rates based on soil type and residue type/fraction is allowing the use of new high efficiency harvesting equipment and methods. As another consideration, single pass harvesting and other technologies that improve harvesting costs cause biomass storage moisture management challenges, which challenges are further perturbed by annual variability in biomass moisture content. Monitoring, sampling, simulation, and analysis provide basis for moisture, time, and quality relationships in storage, which has allowed the development of moisture tolerant storage systems and best management processes that combine moisture content and time to accommodate baled storage of wet material based upon “shelf-life.” The key to improving biomass supply logistics costs has been developing the associated agronomic sustainability and biomass quality technologies and processes that allow the implementation of equipment engineering solutions.

  9. Photovoltaics (Fact Sheet)

    SciTech Connect (OSTI)

    DOE Solar Energy Technologies Program

    2011-06-27

    The fact sheet summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its photovoltaics subprogram.

  10. Photovoltaics (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-06-01

    The fact sheet summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its photovoltaics subprogram.

  11. NREL: Photovoltaics Research - Engineering

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

    and Reliability team serves to improve PV technologies. Printable Version Photovoltaics Research Home Silicon Polycrystalline Thin Films Multijunctions New Materials,...

  12. Sandia Energy Photovoltaic

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

    feed 0 Sandian Contributes to Western Electricity Coordinating Council Photovoltaic Power Plant Model Validation Guideline http:energy.sandia.gov...

  13. Photovoltaic device and method

    SciTech Connect (OSTI)

    Cleereman, Robert; Lesniak, Michael J.; Keenihan, James R.; Langmaid, Joe A.; Gaston, Ryan; Eurich, Gerald K.; Boven, Michelle L.

    2015-11-24

    The present invention is premised upon an improved photovoltaic device ("PVD") and method of use, more particularly to an improved photovoltaic device with an integral locator and electrical terminal mechanism for transferring current to or from the improved photovoltaic device and the use as a system.

  14. Photovoltaic device and method

    DOE Patents [OSTI]

    Cleereman, Robert J; Lesniak, Michael J; Keenihan, James R; Langmaid, Joe A; Gaston, Ryan; Eurich, Gerald K; Boven, Michelle L

    2015-01-27

    The present invention is premised upon an improved photovoltaic device ("PVD") and method of use, more particularly to an improved photovoltaic device with an integral locator and electrical terminal mechanism for transferring current to or from the improved photovoltaic device and the use as a system.

  15. Amorphous silicon photovoltaic devices

    DOE Patents [OSTI]

    Carlson, David E.; Lin, Guang H.; Ganguly, Gautam

    2004-08-31

    This invention is a photovoltaic device comprising an intrinsic or i-layer of amorphous silicon and where the photovoltaic device is more efficient at converting light energy to electric energy at high operating temperatures than at low operating temperatures. The photovoltaic devices of this invention are suitable for use in high temperature operating environments.

  16. High density photovoltaic

    SciTech Connect (OSTI)

    Haigh, R.E.; Jacobson, G.F.; Wojtczuk, S.

    1997-10-14

    Photovoltaic technology can directly generate high voltages in a solid state material through the series interconnect of many photovoltaic diodes. We are investigating the feasibility of developing an electrically isolated, high-voltage power supply using miniature photovoltaic devices that convert optical energy to electrical energy.

  17. Renewable Energy Ready Home Solar Photovoltaic Specifications...

    Energy Savers [EERE]

    Renewable Energy Ready Home Solar Photovoltaic Specifications Renewable Energy Ready Home Solar Photovoltaic Specifications Solar Photovoltaic Specification, Checklist and Guide, ...

  18. Biomass and Biofuels Technologies - Energy Innovation Portal

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

    Technology Marketing Summaries Site Map Printable Version Share this resource About Search Categories (15) Advanced Materials Biomass and Biofuels Marketing Summaries (161) Success Stories (3) Building Energy Efficiency Electricity Transmission Energy Analysis Energy Storage Geothermal Hydrogen and Fuel Cell Hydropower, Wave and Tidal Industrial Technologies Solar Photovoltaic Solar Thermal Startup America Vehicles and Fuels Wind Energy Partners (27) Visual Patent Search Success Stories Browse

  19. Photovoltaic Materials

    SciTech Connect (OSTI)

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

    2012-10-15

    The goal of the current project was to help make the US solar industry a world leader in the manufacture of thin film photovoltaics. The overall approach was to leverage ORNL’s unique characterization and processing technologies to gain a better understanding of the fundamental challenges for solar cell processing and apply that knowledge to targeted projects with industry members. ORNL has the capabilities in place and the expertise required to understand how basic material properties including defects, impurities, and grain boundaries affect the solar cell performance. ORNL also has unique processing capabilities to optimize the manufacturing process for fabrication of high efficiency and low cost solar cells. ORNL recently established the Center for Advanced Thin-film Systems (CATS), which contains a suite of optical and electrical characterization equipment specifically focused on solar cell research. Under this project, ORNL made these facilities available to industrial partners who were interested in pursuing collaborative research toward the improvement of their product or manufacturing process. Four specific projects were pursued with industrial partners: Global Solar Energy is a solar industry leader in full scale production manufacturing highly-efficient Copper Indium Gallium diSelenide (CIGS) thin film solar material, cells and products. ORNL worked with GSE to develop a scalable, non-vacuum, solution technique to deposit amorphous or nanocrystalline conducting barrier layers on untextured stainless steel substrates for fabricating high efficiency flexible CIGS PV. Ferro Corporation’s Electronic, Color and Glass Materials (“ECGM”) business unit is currently the world’s largest supplier of metallic contact materials in the crystalline solar cell marketplace. Ferro’s ECGM business unit has been the world's leading supplier of thick film metal pastes to the crystalline silicon PV industry for more than 30 years, and has had operational cells and

  20. Biomass One Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    USA Biomass National Map Retrieved from "http:en.openei.orgwindex.php?titleBiomassOneBiomassFacility&oldid397204" Feedback Contact needs updating Image needs...

  1. NREL: Photovoltaics Research - Awards for Photovoltaic Manufacturing...

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

    Awards for Photovoltaic Manufacturing R&D The following research efforts within the PV Manufacturing R&D Project were honored with prestigious industry awards. 1995-AstroPower (now ...

  2. NREL: Photovoltaics Research - Photovoltaic Energy Ratings Methods

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

    Validation Photovoltaic Energy Ratings Methods Validation The Photovoltaic (PV) Engineering group at NREL validates energy ratings methods by standards committees to establish an energy rating methodology. We are evaluating techniques to account for the impact on PV performance from variations in the spectral distribution of solar radiation. Two types of methods were evaluated for correcting the short-circuit current of PV modules for variations in the solar spectrum under clear skies: (1)

  3. Photovoltaic technology assessment

    SciTech Connect (OSTI)

    Backus, C.E.

    1981-01-01

    After a brief review of the history of photovoltaic devices and a discussion of the cost goals set for photovoltaic modules, the status of photovoltaic technology is assessed. Included are discussions of: current applications, present industrial production, low-cost silicon production techniques, energy payback periods for solar cells, advanced materials research and development, concentrator systems, balance-of-system components. Also discussed are some nontechnical aspects, including foreign markets, US government program approach, and industry attitudes and approaches. (LEW)

  4. Solar Photovoltaic SPECIFICATION, CHECKLIST...

    Energy Savers [EERE]

    Ready Home SOLAR PHOTOVOLTAIC SPECIFICATION, CHECKLIST AND GUIDE i Table of Contents About the Renewable Energy Ready Home Specifications Assumptions of the RERH Solar ...

  5. National Laboratory Photovoltaics Research

    Office of Energy Efficiency and Renewable Energy (EERE)

    DOE supports photovoltaic (PV) research and development and facilities at its national laboratories to accelerate progress toward achieving the SunShot Initiative's technological and economic...

  6. Photovoltaics Business Models

    SciTech Connect (OSTI)

    Frantzis, L.; Graham, S.; Katofsky, R.; Sawyer, H.

    2008-02-01

    This report summarizes work to better understand the structure of future photovoltaics business models and the research, development, and demonstration required to support their deployment.

  7. Concentrating Photovoltaics (Presentation)

    SciTech Connect (OSTI)

    Kurtz, S.

    2009-01-20

    Solar is growing rapidly, and the concentrating photovoltaics industry-both high- and low-concentration cell approaches-may be ready to ramp production in 2009.

  8. NREL: Photovoltaics Research - News

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

    For archived editions of the NCPV Hotline. See also PV events. Printable Version Photovoltaics Research Home Silicon Polycrystalline Thin Films Multijunctions New Materials,...

  9. NREL: Photovoltaics Research - Webmaster

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

    reply. Your name: Your email address: Your message: Send Message Printable Version Photovoltaics Research Home Silicon Polycrystalline Thin Films Multijunctions New Materials,...

  10. NREL: Photovoltaics Research - Facilities

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

    technologies and applications. These facilities within the National Center for Photovoltaics (NCPV) serve both multi-use and dedicated-use functions. We encourage our research...

  11. Methods for pretreating biomass

    DOE Patents [OSTI]

    Balan, Venkatesh; Dale, Bruce E; Chundawat, Shishir; Sousa, Leonardo

    2015-03-03

    A method of alkaline pretreatment of biomass, in particular, pretreating biomass with gaseous ammonia.

  12. Solar Photovoltaic Technology Basics | NREL

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

    Solar Photovoltaic Technology Basics Solar cells, also called photovoltaic (PV) cells by scientists, convert sunlight directly into electricity. PV gets its name from the process ...

  13. NREL: Photovoltaics Research - Steve Rummel

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

    Moriarty, Carl Osterwald, Larry Ottoson, Steve Rummel, and Rafell Williams, "Rating Photovoltaics" 39th IEEE Photovoltaic Specialist Conference, Tampa Bay, Florida, June 16-21,...

  14. Integrated Photovoltaics | Open Energy Information

    Open Energy Info (EERE)

    Photovoltaics Jump to: navigation, search Name: Integrated Photovoltaics Place: Sunnyvale, California Product: California-based stealth mode PV startup. Coordinates: 32.780338,...

  15. Ligitek Photovoltaic | Open Energy Information

    Open Energy Info (EERE)

    Photovoltaic Jump to: navigation, search Name: Ligitek Photovoltaic Place: Taiwan Sector: Solar Product: Ligitek solar is a fully owned subsidiary of Ligitek Electronics, that will...

  16. Photovoltaics industry profile

    SciTech Connect (OSTI)

    1980-10-01

    A description of the status of the US photovoltaics industry is given. Principal end-user industries are identified, domestic and foreign market trends are discussed, and industry-organized and US government-organized trade promotion events are listed. Trade associations and trade journals are listed, and a photovoltaic product manufacturers list is included. (WHK)

  17. Microsystems Enabled Photovoltaics

    SciTech Connect (OSTI)

    Gupta, Vipin; Nielson, Greg; Okandan, Murat, Granata, Jennifer; Nelson, Jeff; Haney, Mike; Cruz-Campa, Jose Luiz

    2012-07-02

    Sandia's microsystems enabled photovoltaic advances combine mature technology and tools currently used in microsystem production with groundbreaking advances in photovoltaics cell design, decreasing production and system costs while improving energy conversion efficiency. The technology has potential applications in buildings, houses, clothing, portable electronics, vehicles, and other contoured structures.

  18. Microsystems Enabled Photovoltaics

    ScienceCinema (OSTI)

    Gupta, Vipin; Nielson, Greg; Okandan, Murat, Granata, Jennifer; Nelson, Jeff; Haney, Mike; Cruz-Campa, Jose Luiz

    2014-06-23

    Sandia's microsystems enabled photovoltaic advances combine mature technology and tools currently used in microsystem production with groundbreaking advances in photovoltaics cell design, decreasing production and system costs while improving energy conversion efficiency. The technology has potential applications in buildings, houses, clothing, portable electronics, vehicles, and other contoured structures.

  19. Detailed Photovoltaic Analysis Simulation Spreadsheet

    Energy Science and Technology Software Center (OSTI)

    2008-12-31

    The software calculates photovoltaic system energy and financial performance via the utilization of very detailed parameters.

  20. Lyonsdale Biomass LLC Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    LLC Biomass Facility Jump to: navigation, search Name Lyonsdale Biomass LLC Biomass Facility Facility Lyonsdale Biomass LLC Sector Biomass Location Lewis County, New York...

  1. Biomass One LP Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    LP Biomass Facility Jump to: navigation, search Name Biomass One LP Biomass Facility Facility Biomass One LP Sector Biomass Location Jackson County, Oregon Coordinates 42.334535,...

  2. Biomass Feed and Gasification

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

    the feeding and conversion of biomass and coal-biomass mixtures as essential upstream ... Activities support research for handling and processing of coal-biomass mixtures, ensuring ...

  3. Photovoltaics | Department of Energy

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

    Photovoltaics Photovoltaics The SunShot Initiative supports the research and development of photovoltaic (PV) technologies to improve efficiency and reliability and to lower manufacturing costs in order to make solar electricity cost-competitive with other sources of energy by 2020. As of November 2015, four years into the decade-long SunShot Initiative, the solar industry is about 70% of the way to achieving SunShot's cost target of $0.06 per kilowatt-hour for utility-scale PV (based on 2010

  4. Energy 101: Solar Photovoltaics | Department of Energy

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

    Solar Photovoltaics Energy 101: Solar Photovoltaics February 10, 2011 - 5:29pm Addthis Learn more about photovoltaic systems that convert light energy into electricity. Andy Oare ...

  5. Solar Photovoltaic Technology Basics | Department of Energy

    Energy Savers [EERE]

    Solar Solar Photovoltaic Technology Basics Solar Photovoltaic Technology Basics August ... Photovoltaic (PV) materials and devices convert sunlight into electrical energy. A single ...

  6. Photovoltaic module with removable wind deflector (Patent) |...

    Office of Scientific and Technical Information (OSTI)

    Photovoltaic module with removable wind deflector Title: Photovoltaic module with removable wind deflector A photovoltaic (PV) module assembly including a PV module, a deflector, ...

  7. Photovoltaic module with removable wind deflector (Patent) |...

    Office of Scientific and Technical Information (OSTI)

    Patent: Photovoltaic module with removable wind deflector Citation Details In-Document Search Title: Photovoltaic module with removable wind deflector A photovoltaic (PV) module ...

  8. Sputtered Thin Film Photovoltaics - Energy Innovation Portal

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

    Solar Photovoltaic Solar Photovoltaic Find More Like This Return to Search Sputtered Thin Film Photovoltaics Naval Research Laboratory Contact NRL About This Technology ...

  9. Category:Photovoltaic Incentives | Open Energy Information

    Open Energy Info (EERE)

    Photovoltaic Incentives Jump to: navigation, search Category for Photovoltaic Incentives. Pages in category "Photovoltaic Incentives" The following 107 pages are in this category,...

  10. Alternating Current Photovoltaic Building Block - Energy Innovation...

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

    Solar Photovoltaic Solar Photovoltaic Find More Like This Return to Search Alternating Current Photovoltaic Building Block Sandia National Laboratories Contact SNL About This...

  11. Category:Photovoltaic | Open Energy Information

    Open Energy Info (EERE)

    Photovoltaic Jump to: navigation, search This is the Photovoltaic category. Pages in category "Photovoltaic" The following 7 pages are in this category, out of 7 total. A American...

  12. Star Biomass | Open Energy Information

    Open Energy Info (EERE)

    Biomass Jump to: navigation, search Name: Star Biomass Place: India Sector: Biomass Product: Plans to set up biomass projects in Rajasthan. References: Star Biomass1 This article...

  13. Lignocellulosic Biomass

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

    Lignocellulosic Biomass - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced

  14. Photovoltaics: Separating Multiple Excitons

    SciTech Connect (OSTI)

    Nozik, A. J.

    2012-05-01

    Scientists have demonstrated an efficient process for generating multiple excitons in adjacent silicon nanocrystals from a single high-energy photon. Their findings could prove useful for a wide range of photovoltaic applications.

  15. Residential Photovoltaic Solar Panels

    Office of Energy Efficiency and Renewable Energy (EERE)

    This b-roll footage shows exteriors of two Colorado residences that use photovoltaic panels to collect renewable solar energy, thereby reducing their dependence on external electric power. Net...

  16. Photovoltaics: A Diverse Technology

    Office of Energy Efficiency and Renewable Energy (EERE)

    This video illustrates the diversity of photovoltaic (PV) technology, which is due to innovations in PV materials, reductions in manufacturing costs, and expanding uses of the technology. A brief...

  17. Photonic Design for Photovoltaics

    SciTech Connect (OSTI)

    Kosten, E.; Callahan, D.; Horowitz, K.; Pala, R.; Atwater, H.

    2014-08-28

    We describe photonic design approaches for silicon photovoltaics including i) trapezoidal broadband light trapping structures ii) broadband light trapping with photonic crystal superlattices iii) III-V/Si nanowire arrays designed for broadband light trapping.

  18. Photovoltaic solar cell

    DOE Patents [OSTI]

    Nielson, Gregory N; Cruz-Campa, Jose Luis; Okandan, Murat; Resnick, Paul J

    2014-05-20

    A photovoltaic solar cell for generating electricity from sunlight is disclosed. The photovoltaic solar cell comprises a plurality of spaced-apart point contact junctions formed in a semiconductor body to receive the sunlight and generate the electricity therefrom, the plurality of spaced-apart point contact junctions having a first plurality of regions having a first doping type and a second plurality of regions having a second doping type. In addition, the photovoltaic solar cell comprises a first electrical contact electrically connected to each of the first plurality of regions and a second electrical contact electrically connected to each of the second plurality of regions, as well as a passivation layer covering major surfaces and sidewalls of the photovoltaic solar cell.

  19. Photovoltaic solar cell

    DOE Patents [OSTI]

    Nielson, Gregory N; Okandan, Murat; Cruz-Campa, Jose Luis; Resnick, Paul J

    2013-11-26

    A photovoltaic solar cell for generating electricity from sunlight is disclosed. The photovoltaic solar cell comprises a plurality of spaced-apart point contact junctions formed in a semiconductor body to receive the sunlight and generate the electicity therefrom, the plurality of spaced-apart point contact junctions having a first plurality of regions having a first doping type and a second plurality of regions having a second doping type. In addition, the photovoltaic solar cell comprises a first electrical contact electrically connected to each of the first plurality of regions and a second electrical contact electrically connected to each of the second plurality of regions, as well as a passivation layer covering major surfaces and sidewalls of the photovoltaic solar cell.

  20. Photovoltaic Research Facilities

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) funds photovoltaic (PV) research and development (R&D) at its national laboratory facilities located throughout the country. To encourage further innovation,...

  1. Photovoltaic systems and applications

    SciTech Connect (OSTI)

    Not Available

    1982-01-01

    Abstracts are given of presentations given at a project review meeting held at Albuquerque, NM. The proceedings cover the past accomplishments and current activities of the Photovoltaic Systems Research, Balance-of-System Technology Development and System Application Experiments Projects at Sandia National Laboratories. The status of intermediate system application experiments and residential system analysis is emphasized. Some discussion of the future of the Photovoltaic Program in general, and the Sandia projects in particular is also presented.

  2. Photovoltaics Fact Sheet

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

    Verde National Park in Colorado is the home of this PV array, where it provides energy for the visitor center. Photo Courtesy: Department of Energy Photovoltaics The U.S. Department of Energy (DOE)'s Solar Energy Technologies Office works with industry, academia, national laboratories, and other government agencies to advance solar photovoltaics (PV), which is the direct conversion of sunlight into electricity by a semiconductor, in support of the goals of the SunShot Initiative. SunShot

  3. Amonix Photovoltaic System

    Office of Energy Efficiency and Renewable Energy (EERE)

    This photograph features the Amonix and Arizona Public Service (APS) partnership to install the world’s largest utility-scale concentrating photovoltaic (CPV) power plant in 2002. Photovoltaic (PV) systems at the APS facility use a combination of technologies. The systems in the foreground are single-axis tracking flat-plate silicon systems. Shown in the upper right are three large (35 kilowatt) Amonix CPV.

  4. Amonix Photovoltaic System

    Broader source: Energy.gov [DOE]

    This photograph features the Amonix and Arizona Public Service (APS) partnership to install the worlds largest utility-scale concentrating photovoltaic (CPV) power plant in 2002. Photovoltaic (PV) systems at the APS facility use a combination of technologies. The systems in the foreground are single-axis tracking flat-plate silicon systems. Shown in the upper right are three large (35 kilowatt) Amonix CPV.

  5. Photovoltaics: The next generation

    SciTech Connect (OSTI)

    Wilson, A.

    1986-08-01

    The development of photovoltaics in the United States, with a few notable exceptions, has been carried out by the oil industry. Companies such as Arco, Exxon, Mobil and Sohio have played a tremendously important role in bringing photovoltaic technology to its current state of development. Many of these companies are continuing very active programs in pv, including the investigation of new and potentially far-reaching technologies.

  6. Photovoltaic System Fault Detection

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

    Photovoltaic System Fault Detection and Diagnostics using Laterally Primed Adaptive Resonance Theory Neural Network C. Birk Jones, Joshua S. Stein, Sigifredo Gonzalez, and Bruce H. King Sandia National Laboratories, Albuquerque, NM, 87185, U.S.A Abstract-Cost effective integration of solar photovoltaic (PV) systems requires increased reliability. This can be achieved with a robust fault detection and diagnostic (FDD) tool that auto- matically discovers faults. This paper introduces the Laterally

  7. Photovoltaic module and interlocked stack of photovoltaic modules

    SciTech Connect (OSTI)

    Wares, Brian S.

    2014-09-02

    One embodiment relates to an arrangement of photovoltaic modules configured for transportation. The arrangement includes a plurality of photovoltaic modules, each photovoltaic module including a frame. A plurality of individual male alignment features and a plurality of individual female alignment features are included on each frame. Adjacent photovoltaic modules are interlocked by multiple individual male alignment features on a first module of the adjacent photovoltaic modules fitting into and being surrounded by corresponding individual female alignment features on a second module of the adjacent photovoltaic modules. Other embodiments, features and aspects are also disclosed.

  8. Tracy Biomass Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    NEEDS 2006 Database Retrieved from "http:en.openei.orgwindex.php?titleTracyBiomassBiomassFacility&oldid398234" Feedback Contact needs updating Image needs...

  9. Biomass shock pretreatment

    DOE Patents [OSTI]

    Holtzapple, Mark T.; Madison, Maxine Jones; Ramirez, Rocio Sierra; Deimund, Mark A.; Falls, Matthew; Dunkelman, John J.

    2014-07-01

    Methods and apparatus for treating biomass that may include introducing a biomass to a chamber; exposing the biomass in the chamber to a shock event to produce a shocked biomass; and transferring the shocked biomass from the chamber. In some aspects, the method may include pretreating the biomass with a chemical before introducing the biomass to the chamber and/or after transferring shocked biomass from the chamber.

  10. NREL: Photovoltaics Research - Company Partners in Photovoltaic

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

    Manufacturing R&D Company Partners in Photovoltaic Manufacturing R&D More than 40 private-sector companies partnered with NREL on successful efforts within the PV Manufacturing R&D Project. They included manufacturers of crystalline silicon, thin-film, and concentrator solar technologies. The companies are listed below. Advanced Energy Systems Alpha Solarco ASE Americas AstroPower/GE Energy Boeing Aerospace BP Solar Cronar Crystal Systems Dow Corning Energy Conversion Devices

  11. Biomass Conversion

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

    Feedstocks to Final Products To efficiently convert algae, diverse types of cellulosic biomass, and emerging feedstocks into renewable fuels, the U.S. Department of Energy (DOE) supports research, development, and demonstration of technologies. This research will help ensure that these renewable fuels are compatible with today's vehicles and infrastructure. Advanced biofuels are part of the United States' "all-of-the-above" energy strategy to develop domestic energy resources and win

  12. Ultrafast Photovoltaic Response in Ferroelectric Nanolayers ...

    Office of Scientific and Technical Information (OSTI)

    Ultrafast Photovoltaic Response in Ferroelectric Nanolayers Citation Details In-Document Search Title: Ultrafast Photovoltaic Response in Ferroelectric Nanolayers Authors:...

  13. Solar Energy Technologies Program: Photovoltaics

    SciTech Connect (OSTI)

    2009-10-26

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

  14. NREL: Photovoltaics Research -Kent Terwilliger

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

    for: Troubleshooting and repairing environmental test chambers. Printable Version Photovoltaics Research Home Silicon Polycrystalline Thin Films Multijunctions New Materials,...

  15. NREL: Photovoltaics Research - Greg Perrin

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

    maintenance, and repair; machining and other lab support. Printable Version Photovoltaics Research Home Silicon Polycrystalline Thin Films Multijunctions New Materials,...

  16. Nanowires enabling strained photovoltaics

    SciTech Connect (OSTI)

    Greil, J.; Bertagnolli, E.; Lugstein, A.; Birner, S.

    2014-04-21

    Photovoltaic nano-devices have largely been relying on charge separation in conventional p-n junctions. Junction formation via doping, however, imposes major challenges in process control. Here, we report on a concept for photovoltaic energy conversion at the nano scale without the need for intentional doping. Our approach relies on charge carrier separation in inhomogeneously strained germanium nanowires (Ge NWs). This concept utilizes the strain-induced gradient in bandgap along tapered NWs. Experimental data confirms the feasibility of strain-induced charge separation in individual vapor-liquid-solid grown Ge NW devices with an internal quantum efficiency of ?5%. The charge separation mechanism, though, is not inherently limited to a distinct material. Our work establishes a class of photovoltaic nano-devices with its opto-electronic properties engineered by size, shape, and applied strain.

  17. Photovoltaic Subcontract Program

    SciTech Connect (OSTI)

    Surek, Thomas; Catalano, Anthony

    1993-03-01

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

  18. Asphaltene based photovoltaic devices

    DOE Patents [OSTI]

    Chianelli, Russell R.; Castillo, Karina; Gupta, Vipin; Qudah, Ali M.; Torres, Brenda; Abujnah, Rajib E.

    2016-03-22

    Photovoltaic devices and methods of making the same, are disclosed herein. The cell comprises a photovoltaic device that comprises a first electrically conductive layer comprising a photo-sensitized electrode; at least one photoelectrochemical layer comprising metal-oxide particles, an electrolyte solution comprising at least one asphaltene fraction, wherein the metal-oxide particles are optionally dispersed in a surfactant; and a second electrically conductive layer comprising a counter-electrode, wherein the second electrically conductive layer comprises one or more conductive elements comprising carbon, graphite, soot, carbon allotropes or any combinations thereof.

  19. High efficiency photovoltaic device

    DOE Patents [OSTI]

    Guha, Subhendu; Yang, Chi C.; Xu, Xi Xiang

    1999-11-02

    An N-I-P type photovoltaic device includes a multi-layered body of N-doped semiconductor material which has an amorphous, N doped layer in contact with the amorphous body of intrinsic semiconductor material, and a microcrystalline, N doped layer overlying the amorphous, N doped material. A tandem device comprising stacked N-I-P cells may further include a second amorphous, N doped layer interposed between the microcrystalline, N doped layer and a microcrystalline P doped layer. Photovoltaic devices thus configured manifest improved performance, particularly when configured as tandem devices.

  20. Concentrating photovoltaic solar panel

    DOE Patents [OSTI]

    Cashion, Steven A; Bowser, Michael R; Farrelly, Mark B; Hines, Braden E; Holmes, Howard C; Johnson, Jr., Richard L; Russell, Richard J; Turk, Michael F

    2014-04-15

    The present invention relates to photovoltaic power systems, photovoltaic concentrator modules, and related methods. In particular, the present invention features concentrator modules having interior points of attachment for an articulating mechanism and/or an articulating mechanism that has a unique arrangement of chassis members so as to isolate bending, etc. from being transferred among the chassis members. The present invention also features adjustable solar panel mounting features and/or mounting features with two or more degrees of freedom. The present invention also features a mechanical fastener for secondary optics in a concentrator module.

  1. Photovoltaic radiation detector element

    DOE Patents [OSTI]

    Agouridis, D.C.

    1980-12-17

    A radiation detector element is formed of a body of semiconductor material, a coating on the body which forms a photovoltaic junction therewith, and a current collector consisting of narrow metallic strips, the aforesaid coating having an opening therein in the edge of which closely approaches but is spaced from the current collector strips.

  2. Reticulated Organic Photovoltaics

    SciTech Connect (OSTI)

    Schiros T.; Yager K.; Mannsfeld S.; Chiu C.-Y.; Ciston J.; Gorodetsky A.; Palma M.; Bullard Z.; Kramer T.; Delongchamp D.; Fischer D.; Kymissis I.; Toney M.F.; Nuckolls C.

    2012-03-21

    This paper shows how the self-assembled interlocking of two nanostructured materials can lead to increased photovoltaic performance. A detailed picture of the reticulated 6-DBTTC/C{sub 60} organic photovoltaic (OPV) heterojunction, which produces devices approaching the theoretical maximum for these materials, is presented from near edge X-ray absorption spectroscopy (NEXAFS), X-ray photoelectron spectroscopy (XPS), Grazing Incidence X-ray diffraction (GIXD) and transmission electron microscopy (TEM). The complementary suite of techniques shows how self-assembly can be exploited to engineer the interface and morphology between the cables of donor (6-DBTTC) material and a polycrystalline acceptor (C{sub 60}) to create an interpenetrating network of pure phases expected to be optimal for OPV device design. Moreover, we find that there is also a structural and electronic interaction between the two materials at the molecular interface. The data show how molecular self-assembly can facilitate 3-D nanostructured photovoltaic cells that are made with the simplicity and control of bilayer device fabrication. The significant improvement in photovoltaic performance of the reticulated heterojunction over the flat analog highlights the potential of these strategies to improve the efficiency of organic solar cells.

  3. Thin film photovoltaic cell

    DOE Patents [OSTI]

    Meakin, John D.; Bragagnolo, Julio

    1982-01-01

    A thin film photovoltaic cell having a transparent electrical contact and an opaque electrical contact with a pair of semiconductors therebetween includes utilizing one of the electrical contacts as a substrate and wherein the inner surface thereof is modified by microroughening while being macro-planar.

  4. Formed photovoltaic module busbars

    SciTech Connect (OSTI)

    Rose, Douglas; Daroczi, Shan; Phu, Thomas

    2015-11-10

    A cell connection piece for a photovoltaic module is disclosed herein. The cell connection piece includes an interconnect bus, a plurality of bus tabs unitarily formed with the interconnect bus, and a terminal bus coupled with the interconnect bus. The plurality of bus tabs extend from the interconnect bus. The terminal bus includes a non-linear portion.

  5. Multiple gap photovoltaic device

    DOE Patents [OSTI]

    Dalal, Vikram L.

    1981-01-01

    A multiple gap photovoltaic device having a transparent electrical contact adjacent a first cell which in turn is adjacent a second cell on an opaque electrical contact, includes utilizing an amorphous semiconductor as the first cell and a crystalline semiconductor as the second cell.

  6. Photovoltaic radiation detector element

    DOE Patents [OSTI]

    Agouridis, Dimitrios C.

    1983-01-01

    A radiation detector element is formed of a body of semiconductor material, a coating on the body which forms a photovoltaic junction therewith, and a current collector consisting of narrow metallic strips, the aforesaid coating having an opening therein the edge of which closely approaches but is spaced from the current collector strips.

  7. Photovoltaics (Fact Sheet)

    SciTech Connect (OSTI)

    DOE Solar Energy Technologies Program

    2011-10-13

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

  8. Photovoltaics (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-10-01

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

  9. Photovoltaics (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-11-01

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

  10. Biomass torrefaction mill

    DOE Patents [OSTI]

    Sprouse, Kenneth M.

    2016-05-17

    A biomass torrefaction system includes a mill which receives a raw biomass feedstock and operates at temperatures above 400 F (204 C) to generate a dusty flue gas which contains a milled biomass product.

  11. Science Activities in Biomass

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

    concern plant growth and the environment, byproducts of biomass, and energy contained in different types of biomass. Provided by the Department of Energy's National Renewable...

  12. NREL: Biomass Research - Facilities

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

    Facilities At NREL's state-of-the-art biomass research facilities, researchers design and optimize processes to convert renewable biomass feedstocks into transportation fuels and...

  13. NREL: Biomass Research - Capabilities

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

    is then separated, purified, and recovered for use as a transportation fuel. NREL biomass researchers and scientists have strong capabilities in many facets of biomass...

  14. NREL: Biomass Research - Publications

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

    biofuels Biomass process and sustainability analyses. ... For information on biomass policy, read congressional ... on the Yield and Product Distribution of Fast ...

  15. Biomass Analytical Library

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

    diversity and performance, The chemical and physical properties of biomass and biomass feedstocks are characterized as they move through the supply chain to various conversion...

  16. Photovoltaic module and interlocked stack of photovoltaic modules

    DOE Patents [OSTI]

    Wares, Brian S.

    2012-09-04

    One embodiment relates to an arrangement of photovoltaic modules configured for transportation. The arrangement includes a plurality of photovoltaic modules, each photovoltaic module including a frame having at least a top member and a bottom member. A plurality of alignment features are included on the top member of each frame, and a plurality of alignment features are included on the bottom member of each frame. Adjacent photovoltaic modules are interlocked by the alignment features on the top member of a lower module fitting together with the alignment features on the bottom member of an upper module. Other embodiments, features and aspects are also disclosed.

  17. Temperature compensated photovoltaic array

    DOE Patents [OSTI]

    Mosher, D.M.

    1997-11-18

    A temperature compensated photovoltaic module comprises a series of solar cells having a thermally activated switch connected in parallel with several of the cells. The photovoltaic module is adapted to charge conventional batteries having a temperature coefficient differing from the temperature coefficient of the module. The calibration temperatures of the switches are chosen whereby the colder the ambient temperature for the module, the more switches that are on and form a closed circuit to short the associated solar cells. By shorting some of the solar cells as the ambient temperature decreases, the battery being charged by the module is not excessively overcharged at lower temperatures. PV module is an integrated solution that is reliable and inexpensive. 2 figs.

  18. Temperature compensated photovoltaic array

    DOE Patents [OSTI]

    Mosher, Dan Michael

    1997-11-18

    A temperature compensated photovoltaic module (20) comprised of a series of solar cells (22) having a thermally activated switch (24) connected in parallel with several of the cells (22). The photovoltaic module (20) is adapted to charge conventional batteries having a temperature coefficient (TC) differing from the temperature coefficient (TC) of the module (20). The calibration temperatures of the switches (24) are chosen whereby the colder the ambient temperature for the module (20), the more switches that are on and form a closed circuit to short the associated solar cells (22). By shorting some of the solar cells (22) as the ambient temperature decreases, the battery being charged by the module (20) is not excessively overcharged at lower temperatures. PV module (20) is an integrated solution that is reliable and inexpensive.

  19. Iron Chalcogenide Photovoltaic Absorbers

    SciTech Connect (OSTI)

    Yu, Liping; Lany, Stephan; Kykyneshi, Robert; Jieratum, Vorranutch; Ravichandran, Ram; Pelatt, Brian; Altschul, Emmeline; Platt, Heather A. S.; Wager, John F.; Keszler, Douglas A.; Zunger, Alex

    2011-08-10

    An integrated computational and experimental study of FeS? pyrite reveals that phase coexistence is an important factor limiting performance as a thin-film solar absorber. This phase coexistence is suppressed with the ternary materials Fe?SiS? and Fe?GeS?, which also exhibit higher band gaps than FeS?. Thus, the ternaries provide a new entry point for development of thin-film absorbers and high-efficiency photovoltaics.

  20. Photovoltaic-thermal collectors

    DOE Patents [OSTI]

    Cox, III, Charles H.

    1984-04-24

    A photovoltaic-thermal solar cell including a semiconductor body having antireflective top and bottom surfaces and coated on each said surface with a patterned electrode covering less than 10% of the surface area. A thermal-absorbing surface is spaced apart from the bottom surface of the semiconductor and a heat-exchange fluid is passed between the bottom surface and the heat-absorbing surface.

  1. Microsystems Enabled Photovoltaics (MEPV)

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

    Enabled Photovoltaics (MEPV) - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced

  2. Photovoltaics in the Classroom

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

    Photovoltaics (PV) in the Classroom Workshop National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401-3393 National Renewable Energy Laboratory 2 National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401-3393 NREL is a U.S. Department of Energy National Laboratory Operated by Midwest Research Institute * Battelle * Bechtel NREL/PublicationCode June 1999 NOTICE This report was prepared as an account of work sponsored by an agency of the United States

  3. Photovoltaic module reliability workshop

    SciTech Connect (OSTI)

    Mrig, L.

    1990-01-01

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

  4. Photovoltaic self-assembly.

    SciTech Connect (OSTI)

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

    2010-10-01

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

  5. NREL: Photovoltaics Research Home Page

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

    Photovoltaics Research Photo of Photovoltaic Solar Panels. Photovoltaic (PV) research and development (R&D) at the National Renewable Energy Laboratory (NREL) focuses on (1) boosting solar cell conversion efficiencies, (2) lowering the cost of solar cells, modules, and systems, and (3) improving the reliability of PV components and systems. NREL's PV effort contributes to these goals through high-impact successes in fundamental research, advanced materials and devices, and technology

  6. Photovoltaics Team | Department of Energy

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

    Team Photovoltaics Team Dr. Lenny Tinker Headshot Lenny-Tinker.jpg Dr. Lenny Tinker is the acting program manager for the photovoltaics team. He has been at the U.S. Department of Energy Solar Energy Technologies Office (SETO) since September 2011 and started as an AAAS Science and Technology Policy Fellow on the Photovoltaics team working on Incubator Round 6. As a Federal employee, he now manages early-stage applied research and development programs at national labs, universities, and

  7. Photovoltaic Films - Energy Innovation Portal

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

    Solar Photovoltaic Solar Photovoltaic Find More Like This Return to Search Photovoltaic Films Los Alamos National Laboratory Contact LANL About This Technology LANL’s solar power portfolio includes a deposition process known as PAD. PAD eliminates the need for vacuum-based thin film equipment. LANL's solar power portfolio includes a deposition process known as PAD. PAD eliminates the need for vacuum-based thin film equipment. Technology Marketing SummaryThe rising total cost of energy

  8. Biomass Program Overview

    SciTech Connect (OSTI)

    2010-01-01

    This document provides an overview of the Biomass Program's mission, strategic goals, and research approach.

  9. Biomass Webinar Presentation Slides

    Office of Energy Efficiency and Renewable Energy (EERE)

    Download presentation slides for the DOE Office of Indian Energy webinar on biomass renewable energy.

  10. Biomass treatment method

    DOE Patents [OSTI]

    Friend, Julie; Elander, Richard T.; Tucker, III; Melvin P.; Lyons, Robert C.

    2010-10-26

    A method for treating biomass was developed that uses an apparatus which moves a biomass and dilute aqueous ammonia mixture through reaction chambers without compaction. The apparatus moves the biomass using a non-compressing piston. The resulting treated biomass is saccharified to produce fermentable sugars.

  11. Process Development for Nanostructured Photovoltaics

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

    Low-Cost Nanofabrication Method To Develop Nanostructured, Dye-Sensitized Solar Cells Introduction Photovoltaic (PV) manufacturing is an emerging industry that promises a ...

  12. Photovoltaic Cart Receives Presidential Award

    Broader source: Energy.gov [DOE]

    This photograph features a photovoltaic (PV)-powerd cart that members of the Facilities Energy Management team and Fleet Services organization at Sandia National Laboratories designed. With the...

  13. Glitter-Sized Solar Photovoltaics

    Broader source: Energy.gov [DOE]

    Featured in this photograph are tiny glitter-sized photovoltaic cells, developed by Sandia National Laboratories scientists, that could revolutionize the way solar energy is collected and used....

  14. Utility-scale photovoltaic concentrators

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    The photovoltaics concentrators section of the Renewable Energy Technology Characterizations describes the technical and economic status of this emerging renewable energy option for electricity supply.

  15. Photovoltaics Inc | Open Energy Information

    Open Energy Info (EERE)

    Inc Jump to: navigation, search Name: Photovoltaics Inc Place: Ft. Pierce, Florida Zip: 34981 Product: Makes nano crystalline silicon particles and collides, and has over 22...

  16. NREL: Photovoltaics Research - Bill Sekulic

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

    Silicon Modules to Qualify Their Resistance to System Voltage Stress." Progress in Photovoltaics: Research and Applications, 22(7): 775-83; Golden, CO: National Renewable Energy...

  17. NREL: Photovoltaics Research - Bill Marion

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

    NREL Publications View NREL publications for this staff member. Printable Version Photovoltaics Research Home Silicon Polycrystalline Thin Films Multijunctions New Materials,...

  18. NREL: Photovoltaics Research - NCPV Hotline

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

    | April-June | July-September | October-December Annual Index Printable Version Photovoltaics Research Home Silicon Polycrystalline Thin Films Multijunctions New Materials,...

  19. Solar photovoltaics for development applications

    SciTech Connect (OSTI)

    Shepperd, L.W.; Richards, E.H.

    1993-08-01

    This document introduces photovoltaic technology to individuals and groups specializing in development activities. Examples of actual installations illustrate the many services supplied by photovoltaic systems in development applications, including water pumping, lighting, health care, refrigeration, communications, and a variety of productive uses. The various aspects of the technology are explored to help potential users evaluate whether photovoltaics can assist them in achieving their organizational goals. Basic system design, financing techniques, and the importance of infrastructure are included, along with additional sources of information and major US photovoltaic system suppliers.

  20. Microsystems Enabled Photovoltaics (MEPV) - Energy Innovation Portal

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

    Solar Photovoltaic Solar Photovoltaic Find More Like This Return to Search Microsystems Enabled Photovoltaics (MEPV) Solar Glitter(tm) Photovoltaic Technology Sandia National Laboratories Contact SNL About This Technology Publications: PDF Document Publication Microsystems Enabled Photovoltaics (MEPV) "Solar Glitter" (3,459 KB) Technology Marketing Summary Revolutionary microsolar technology utilizes glitter-sized photovoltaic cells to change how we generate and use solar power. The

  1. Biomass Feed and Gasification

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

    Biomass Feed and Gasification The Biomass Feed and Gasification Key Technology will advance scientific knowledge of the feeding and conversion of biomass and coal-biomass mixtures as essential upstream steps for production of liquid transportation fuels with a lower net GHG emissions than conventional oil refining. Activities support research for handling and processing of coal-biomass mixtures, ensuring those mixtures are compatible with feed delivery systems, identifying potential impacts on

  2. Advancing Solar Through Photovoltaic Technology Innovations ...

    Energy Savers [EERE]

    Advancing Solar Through Photovoltaic Technology Innovations Advancing Solar Through Photovoltaic Technology Innovations April 19, 2011 - 5:17pm Addthis At NREL's High-Intensity ...

  3. Aurora Photovoltaics Manufacturing | Open Energy Information

    Open Energy Info (EERE)

    Photovoltaics Manufacturing Jump to: navigation, search Name: Aurora Photovoltaics Manufacturing Place: Lawrenceville, New Jersey Zip: 8648 Sector: Solar Product: A subsidiary of...

  4. Sandia Energy Photovoltaic Systems Evaluation Laboratory ...

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

    feed 0 Sandians Win 'Best Paper' Award at Photovoltaic Conference in Japan http:energy.sandia.govsandians-win-best-paper-award-at-photovoltaic-conference-in-j...

  5. Funding Opportunity Announcement: Photovoltaic Research & Development...

    Energy Savers [EERE]

    Photovoltaic Research & Development (PVRD) Funding Opportunity Announcement: Photovoltaic Research & Development (PVRD) Funding Number: DE-FOA-0001387 Funding Amount: 20,000,000 ...

  6. Photovoltaic Research and Development - Small Innovative Projects...

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

    Photovoltaic Research and Development - Small Innovative Projects in Solar (PVRD-SIPS) Photovoltaic Research and Development - Small Innovative Projects in Solar (PVRD-SIPS) ...

  7. PROJECT PROFILE: Rapid Development of Disruptive Photovoltaic...

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

    Rapid Development of Disruptive Photovoltaic Technologies PROJECT PROFILE: Rapid Development of Disruptive Photovoltaic Technologies Funding Opportunity: SuNLaMP SunShot ...

  8. Photovoltaic Degradation Rates -- An Analytical Review: Preprint

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

    Photovoltaic Degradation Rates - An Analytical Review Dirk C. Jordan and Sarah R. Kurtz To ... Abstract As photovoltaic penetration of the power grid increases, accurate predictions of ...

  9. PROJECT PROFILE: Scientific Approach to Reducing Photovoltaic...

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

    Scientific Approach to Reducing Photovoltaic Module Material Costs While Increasing Durability PROJECT PROFILE: Scientific Approach to Reducing Photovoltaic Module Material Costs ...

  10. Advancing Solar Through Photovoltaic Technology Innovations ...

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

    Solar Through Photovoltaic Technology Innovations Advancing Solar Through Photovoltaic Technology Innovations April 19, 2011 - 5:17pm Addthis At NREL's High-Intensity Pulse Solar ...

  11. Solar Leasing for Residential Photovoltaic Systems | Department...

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

    Solar Leasing for Residential Photovoltaic Systems Solar Leasing for Residential Photovoltaic Systems This publication examines the solar lease option for residential PV systems ...

  12. Photovoltaics Value Clearinghouse | Open Energy Information

    Open Energy Info (EERE)

    Photovoltaics Value Clearinghouse Jump to: navigation, search The Photovoltaics Value Clearinghouse was developed by NREL and Clean Power Research.1 The PV Value Clearinghouse is...

  13. Earth-abundant semiconductors for photovoltaic applications ...

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

    Earth-abundant semiconductors for photovoltaic applications Thin film photovoltaics (solar cells) has the potential to revolutionize our energy landscape by producing clean,...

  14. Jiaxing Winsaint Photovoltaic | Open Energy Information

    Open Energy Info (EERE)

    Winsaint Photovoltaic Jump to: navigation, search Name: Jiaxing Winsaint Photovoltaic Place: Jiashan Town, Zhejiang Province, China Zip: 314100 Product: China-based manufacturer of...

  15. Dazhan Photovoltaic Co | Open Energy Information

    Open Energy Info (EERE)

    Dazhan Photovoltaic Co Jump to: navigation, search Name: Dazhan Photovoltaic Co Place: Wenzhou City, Zhejiang Province, China Sector: Solar Product: China-based solar energy cell...

  16. Shaanxi Photovoltaic Co Ltd | Open Energy Information

    Open Energy Info (EERE)

    Co Ltd Jump to: navigation, search Name: Shaanxi Photovoltaic Co Ltd Place: Shaanxi Province, China Product: Shaanxi-based intergrated PV company. References: Shaanxi Photovoltaic...

  17. Institute of Concentration Photovoltaic Systems ISFOC | Open...

    Open Energy Info (EERE)

    Photovoltaic Systems ISFOC Jump to: navigation, search Name: Institute of Concentration Photovoltaic Systems (ISFOC) Place: Puertallano, Spain Zip: 13500 Product: Part of the R&D...

  18. British Photovoltaic Association | Open Energy Information

    Open Energy Info (EERE)

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

  19. Jinzhou Jinmao Photovoltaic Technology | Open Energy Information

    Open Energy Info (EERE)

    Jinmao Photovoltaic Technology Jump to: navigation, search Name: Jinzhou Jinmao Photovoltaic Technology Place: Jinzhou, Liaoning Province, China Product: China-based manufacturer...

  20. American Photovoltaics LP | Open Energy Information

    Open Energy Info (EERE)

    Photovoltaics LP Place: Houston, Texas Product: Manufactures and markets thin-film photovoltaic modules. Coordinates: 29.76045, -95.369784 Show Map Loading map......

  1. Photovoltaic Cell Performance Basics | Department of Energy

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

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

  2. Southwest Photovoltaic Systems Inc | Open Energy Information

    Open Energy Info (EERE)

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

  3. AGCO Biomass Solutions: Biomass 2014 Presentation | Department of Energy

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

    AGCO Biomass Solutions: Biomass 2014 Presentation AGCO Biomass Solutions: Biomass 2014 Presentation Plenary IV: Advances in Bioenergy Feedstocks-From Field to Fuel AGCO Biomass Solutions: Biomass 2014 Presentation Glenn Farris, Marketing Manager Biomass, AGCO Corporation farris_biomass_2014.pdf (2.11 MB) More Documents & Publications High Level Overview of DOE Biomass Logistics II Project Activities 2013 Peer Review Presentations-Feedstock Supply and Logistics Feedstock Supply and

  4. Graphite-based photovoltaic cells

    DOE Patents [OSTI]

    Lagally, Max; Liu, Feng

    2010-12-28

    The present invention uses lithographically patterned graphite stacks as the basic building elements of an efficient and economical photovoltaic cell. The basic design of the graphite-based photovoltaic cells includes a plurality of spatially separated graphite stacks, each comprising a plurality of vertically stacked, semiconducting graphene sheets (carbon nanoribbons) bridging electrically conductive contacts.

  5. Photovoltaics: solar electric power systems

    SciTech Connect (OSTI)

    1980-02-01

    The operation and uses of solar cells and the National Photovoltaic Program are briefly described. Eleven DOE photovoltaic application projects are described including forest lookout towers; Wilcox Memorial Hospital in Hawaii; WBNO daytime AM radio station; Schuchuli Indian Village; Meade, Nebraska, agricultural experiment; Mt. Laguna Air Force Station; public schools and colleges; residential applications; and Sea World of Florida. (WHK)

  6. Photovoltaic manufacturing technology

    SciTech Connect (OSTI)

    Wohlgemuth, J.H.; Whitehouse, D.; Wiedeman, S.; Catalano, A.W.; Oswald, R. )

    1991-12-01

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

  7. Photovoltaic panel clamp

    DOE Patents [OSTI]

    Mittan, Margaret Birmingham; Miros, Robert H. J.; Brown, Malcolm P.; Stancel, Robert

    2012-06-05

    A photovoltaic panel clamp includes an upper and lower section. The interface between the assembled clamp halves and the module edge is filled by a flexible gasket material, such as EPDM rubber. The gasket preferably has small, finger like protrusions that allow for easy insertion onto the module edge while being reversed makes it more difficult to remove them from the module once installed. The clamp includes mounting posts or an integral axle to engage a bracket. The clamp also may include a locking tongue to secure the clamp to a bracket.

  8. Photovoltaic panel clamp

    DOE Patents [OSTI]

    Brown, Malcolm P.; Mittan, Margaret Birmingham; Miros, Robert H. J.; Stancel, Robert

    2013-03-19

    A photovoltaic panel clamp includes an upper and lower section. The interface between the assembled clamp halves and the module edge is filled by a flexible gasket material, such as EPDM rubber. The gasket preferably has small, finger like protrusions that allow for easy insertion onto the module edge while being reversed makes it more difficult to remove them from the module once installed. The clamp includes mounting posts or an integral axle to engage a bracket. The clamp also may include a locking tongue to secure the clamp to a bracket.

  9. Photovoltaic Degradation Risk: Preprint

    SciTech Connect (OSTI)

    Jordan, D. C.; Kurtz, S. R.

    2012-04-01

    The ability to accurately predict power delivery over the course of time is of vital importance to the growth of the photovoltaic (PV) industry. Important cost drivers include the efficiency with which sunlight is converted into power, how this relationship changes over time, and the uncertainty in this prediction. An accurate quantification of power decline over time, also known as degradation rate, is essential to all stakeholders - utility companies, integrators, investors, and researchers alike. In this paper we use a statistical approach based on historical data to quantify degradation rates, discern trends and quantify risks related to measurement uncertainties, number of measurements and methodologies.

  10. Thin film photovoltaic device

    DOE Patents [OSTI]

    Catalano, Anthony W.; Bhushan, Manjul

    1982-01-01

    A thin film photovoltaic solar cell which utilizes a zinc phosphide semiconductor is of the homojunction type comprising an n-type conductivity region forming an electrical junction with a p-type region, both regions consisting essentially of the same semiconductor material. The n-type region is formed by treating zinc phosphide with an extrinsic dopant such as magnesium. The semiconductor is formed on a multilayer substrate which acts as an opaque contact. Various transparent contacts may be used, including a thin metal film of the same chemical composition as the n-type dopant or conductive oxides or metal grids.

  11. Thin film photovoltaic device

    DOE Patents [OSTI]

    Catalano, A.W.; Bhushan, M.

    1982-08-03

    A thin film photovoltaic solar cell which utilizes a zinc phosphide semiconductor is of the homojunction type comprising an n-type conductivity region forming an electrical junction with a p-type region, both regions consisting essentially of the same semiconductor material. The n-type region is formed by treating zinc phosphide with an extrinsic dopant such as magnesium. The semiconductor is formed on a multilayer substrate which acts as an opaque contact. Various transparent contacts may be used, including a thin metal film of the same chemical composition as the n-type dopant or conductive oxides or metal grids. 5 figs.

  12. Bracket for photovoltaic modules

    DOE Patents [OSTI]

    Ciasulli, John; Jones, Jason

    2014-06-24

    Brackets for photovoltaic ("PV") modules are described. In one embodiment, a saddle bracket has a mounting surface to support one or more PV modules over a tube, a gusset coupled to the mounting surface, and a mounting feature coupled to the gusset to couple to the tube. The gusset can have a first leg and a second leg extending at an angle relative to the mounting surface. Saddle brackets can be coupled to a torque tube at predetermined locations. PV modules can be coupled to the saddle brackets. The mounting feature can be coupled to the first gusset and configured to stand the one or more PV modules off the tube.

  13. Russell Biomass | Open Energy Information

    Open Energy Info (EERE)

    Place: Massachusetts Sector: Biomass Product: Russell Biomass, LLC is developing a 50MW biomass to energy project at the former Westfield Paper Company site in Russell,...

  14. NREL Center for Photovoltaics

    ScienceCinema (OSTI)

    None

    2013-05-29

    Solar cells, also called photovoltaics (PV) by solar cell scientists, convert sunlight directly into electricity. Solar cells are often used to power calculators and watches. The performance of a solar cell is measured in terms of its efficiency at turning sunlight into electricity. Only sunlight of certain energies will work efficiently to create electricity, and much of it is reflected or absorbed by the material that make up the cell. Because of this, a typical commercial solar cell has an efficiency of 15%?about one-sixth of the sunlight striking the cell generates electricity. Low efficiencies mean that larger arrays are needed, and that means higher cost. Improving solar cell efficiencies while holding down the cost per cell is an important goal of the PV industry, researchers at the National Renewable Energy Laboratory (NREL) and other U.S. Department of Energy (DOE) laboratories, and they have made significant progress. The first solar cells, built in the 1950s, had efficiencies of less than 4%. For a text version of this video visit http://www.nrel.gov/learning/re_photovoltaics_video_text.html

  15. NREL Center for Photovoltaics

    SciTech Connect (OSTI)

    2009-01-01

    Solar cells, also called photovoltaics (PV) by solar cell scientists, convert sunlight directly into electricity. Solar cells are often used to power calculators and watches. The performance of a solar cell is measured in terms of its efficiency at turning sunlight into electricity. Only sunlight of certain energies will work efficiently to create electricity, and much of it is reflected or absorbed by the material that make up the cell. Because of this, a typical commercial solar cell has an efficiency of 15%about one-sixth of the sunlight striking the cell generates electricity. Low efficiencies mean that larger arrays are needed, and that means higher cost. Improving solar cell efficiencies while holding down the cost per cell is an important goal of the PV industry, researchers at the National Renewable Energy Laboratory (NREL) and other U.S. Department of Energy (DOE) laboratories, and they have made significant progress. The first solar cells, built in the 1950s, had efficiencies of less than 4%. For a text version of this video visit http://www.nrel.gov/learning/re_photovoltaics_video_text.html

  16. Biomass and Biofuels Success Stories - Energy Innovation Portal

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

    Success Stories Site Map Printable Version Share this resource About Search Categories (15) Advanced Materials Biomass and Biofuels Marketing Summaries (161) Success Stories (3) Building Energy Efficiency Electricity Transmission Energy Analysis Energy Storage Geothermal Hydrogen and Fuel Cell Hydropower, Wave and Tidal Industrial Technologies Solar Photovoltaic Solar Thermal Startup America Vehicles and Fuels Wind Energy Partners (27) Visual Patent Search Success Stories Graphic of a full-grown

  17. Renewable Energy Ready Home Solar Photovoltaic Specifications

    Office of Energy Efficiency and Renewable Energy (EERE)

    Solar Photovoltaic Specification, Checklist and Guide, from the U.S. Environmental Protection Agency.

  18. Biomass for Electricity Generation

    Reports and Publications (EIA)

    2002-01-01

    This paper examines issues affecting the uses of biomass for electricity generation. The methodology used in the National Energy Modeling System to account for various types of biomass is discussed, and the underlying assumptions are explained.

  19. Biomass 2014 Draft Agenda

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

    Biomass 2014 Draft Agenda All topics and times are tentative and subject to change. Page | 1 BIOMASS 2014: Growing the Future Bioeconomy July 29-30, 2014, Washington Convention ...

  20. Photovoltaic Product Directory and Buyers Guide

    SciTech Connect (OSTI)

    Watts, R.L.; Smith, S.A.; Dirks, J.A.; Mazzucchi, R.P.; Lee, V.E.

    1984-04-01

    The directory guide explains photovoltaic systems briefly and shows what products are available off-the-shelf. Information is given to assist in designing a photovoltaic system and on financial incentives. Help is given for determining if photovoltaic products can meet a particular buyer's needs, and information is provided on actual photovoltaic user's experiences. Detailed information is appended on various financial incentives available from state and federal governments, sources of additional information on photovoltaics, sources of various photovoltaic products, and a listing of addresses of photovoltaic products suppliers. (LEW)

  1. Pretreated densified biomass products

    DOE Patents [OSTI]

    Dale, Bruce E; Ritchie, Bryan; Marshall, Derek

    2014-03-18

    A product comprising at least one densified biomass particulate of a given mass having no added binder and comprised of a plurality of lignin-coated plant biomass fibers is provided, wherein the at least one densified biomass particulate has an intrinsic density substantially equivalent to a binder-containing densified biomass particulate of the same given mass and h a substantially smooth, non-flakey outer surface. Methods for using and making the product are also described.

  2. Biomass Characterization | Bioenergy | NREL

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

    Extractability, Bioenergy Research (2016) Compositional Analysis of Biomass Reference Materials: Results from an Interlaboratory Study, Bioenergy Research (2015) View all ...

  3. Biomass Program Biopower Factsheet

    SciTech Connect (OSTI)

    2010-03-01

    Generating electricity and thermal energy from biomass has the potential to help meet national goals for renewable energy. The forest products industry has used biomass for power and heat for many decades, yet widespread use of biomass to supply electricity to the U.S. power grid and other applications is relatively recent.

  4. Small Modular Biomass Systems

    SciTech Connect (OSTI)

    2002-12-01

    This fact sheet provides information about modular biomass systems. Small modular biomass systems can help supply electricity to rural areas, businesses, and the billions of people who live without power worldwide. These systems use locally available biomass fuels such as wood, crop waste, animal manures, and landfill gas.

  5. Plasmonic Backscattering Enhanced Inverted Photovoltaics

    SciTech Connect (OSTI)

    Dissanayake, D. M. N. M.; Roberts, B.; Ku, P.C.

    2011-01-01

    A plasmonic nanoparticle incorporated inverted organic photovoltaic structure was demonstrated where a monolayer of Ag nanoparticles acted as a wavelength selective reflector. Enhanced light harvesting via plasmonic backscattering into the photovoltaic absorber was observed, resulting in a two-fold improvement in the photocurrent and increased open-circuit voltage. Further, utilizing an optical spacer, the plasmonic backscattering was spectrally controlled, thereby modulating the external quantum efficiency and the photocurrent. Unlike a regular thin-film metallic back reflector, excellent off-resonance optical transmission in excess of 80% was observed from the Ag nanoparticles, making this structure highly suitable for semi-transparent and multi-junction photovoltaic applications.

  6. Photovoltaic module with adhesion promoter

    DOE Patents [OSTI]

    Xavier, Grace

    2013-10-08

    Photovoltaic modules with adhesion promoters and methods for fabricating photovoltaic modules with adhesion promoters are described. A photovoltaic module includes a solar cell including a first surface and a second surface, the second surface including a plurality of interspaced back-side contacts. A first glass layer is coupled to the first surface by a first encapsulating layer. A second glass layer is coupled to the second surface by a second encapsulating layer. At least a portion of the second encapsulating layer is bonded directly to the plurality of interspaced back-side contacts by an adhesion promoter.

  7. High Performance Photovoltaic Project Overview

    SciTech Connect (OSTI)

    Symko-Davies, M.; McConnell, R.

    2005-01-01

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

  8. Photovoltaic power generation system free of bypass diodes (Patent...

    Office of Scientific and Technical Information (OSTI)

    Photovoltaic power generation system free of bypass diodes Title: Photovoltaic power generation system free of bypass diodes A photovoltaic power generation system that includes a ...

  9. Thin film photovoltaic panel and method

    SciTech Connect (OSTI)

    Ackerman, B.; Albright, S.P.; Jordan, J.F.

    1991-06-11

    This patent describes an improved stability photovoltaic panel. It comprises photovoltaic cells each having polycrystalline thin film layers, each of the thin film layers respectively deposited on a common vitreous substrate for allowing light to pass therethrough to reach a photovoltaic heterojunction formed by at least two of the thin film layers, at least one of the film layers forming the photovoltaic heterojunction for each of the photovoltaic cells, each of the photovoltaic cells lying within a plane substantially parallel to an interior planar surface of the vitreous substrate, each of the photovoltaic cells being connected electrically in series to pass electrical current from the photovoltaic panel, a pliable sheet material backcap opposite the vitreous substrate with respect to the photovoltaic cells and spaced from the photovoltaic cells so as to form a substantially planar spacing between the photovoltaic cells and an interior surface of the sheet material backcap, a perimeter portion of the sheet material backcap having a bend for positioning an edge strip of the sheet material backcap spaced from the interior surface of the backcap to form the planar spacing, the edge strip forming a planar surface parallel with a sealingly engaging the vitreous substrate for forming a fluid-tight seal with the vitreous substrate about the perimeter of the photovoltaic cells for protecting the photovoltaic cells from elements exterior of the photovoltaic panel, and a selected desiccant filling substantially the planar spacing for preventing water vapor within the planar spacing from adversely affecting the photovoltaic cells.

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

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

    Photovoltaic Manufacturing R&D Project Photo of blue solar cells being sorted in a production line. A woman works behind the protective glass in the background. BP Solar's manufacturing capabilities include automatic sorting of solar cells after final testing. NREL's Photovoltaic (PV) Manufacturing Research and Development (R&D) Project was a cost-shared partnership between NREL and a number of private-sector solar companies. The primary project goals were to reduce costs for consumers

  11. Photovoltaic solar cell

    SciTech Connect (OSTI)

    Nielson, Gregory N.; Gupta, Vipin P.; Okandan, Murat; Watts, Michael R.

    2015-09-08

    A photovoltaic solar concentrator is disclosed with one or more transverse-junction solar cells (also termed point contact solar cells) and a lens located above each solar cell to concentrate sunlight onto the solar cell to generate electricity. Piezoelectric actuators tilt or translate each lens to track the sun using a feedback-control circuit which senses the electricity generated by one or more of the solar cells. The piezoelectric actuators can be coupled through a displacement-multiplier linkage to provide an increased range of movement of each lens. Each lens in the solar concentrator can be supported on a frame (also termed a tilt plate) having three legs, with the movement of the legs being controlled by the piezoelectric actuators.

  12. Photovoltaic module mounting system

    DOE Patents [OSTI]

    Miros, Robert H. J.; Mittan, Margaret Birmingham; Seery, Martin N; Holland, Rodney H

    2012-09-18

    A solar array mounting system having unique installation, load distribution, and grounding features, and which is adaptable for mounting solar panels having no external frame. The solar array mounting system includes flexible, pedestal-style feet and structural links connected in a grid formation on the mounting surface. The photovoltaic modules are secured in place via the use of attachment clamps that grip the edge of the typically glass substrate. The panel mounting clamps are then held in place by tilt brackets and/or mid-link brackets that provide fixation for the clamps and align the solar panels at a tilt to the horizontal mounting surface. The tilt brackets are held in place atop the flexible feet and connected link members thus creating a complete mounting structure.

  13. Photovoltaic module mounting system

    DOE Patents [OSTI]

    Miros, Robert H. J.; Mittan, Margaret Birmingham; Seery, Martin N.; Holland, Rodney H.

    2012-04-17

    A solar array mounting system having unique installation, load distribution, and grounding features, and which is adaptable for mounting solar panels having no external frame. The solar array mounting system includes flexible, pedestal-style feet and structural links connected in a grid formation on the mounting surface. The photovoltaic modules are secured in place via the use of attachment clamps that grip the edge of the typically glass substrate. The panel mounting clamps are then held in place by tilt brackets and/or mid-link brackets that provide fixation for the clamps and align the solar panels at a tilt to the horizontal mounting surface. The tilt brackets are held in place atop the flexible feet and connected link members thus creating a complete mounting structure.

  14. Photovoltaic cell assembly

    DOE Patents [OSTI]

    Beavis, Leonard C.; Panitz, Janda K. G.; Sharp, Donald J.

    1990-01-01

    A photovoltaic assembly for converting high intensity solar radiation into lectrical energy in which a solar cell is separated from a heat sink by a thin layer of a composite material which has excellent dielectric properties and good thermal conductivity. This composite material is a thin film of porous Al.sub.2 O.sub.3 in which the pores have been substantially filled with an electrophoretically-deposited layer of a styrene-acrylate resin. This composite provides electrical breakdown strengths greater than that of a layer consisting essentially of Al.sub.2 O.sub.3 and has a higher thermal conductivity than a layer of styrene-acrylate alone.

  15. Photovoltaic solar concentrator

    DOE Patents [OSTI]

    Nielson, Gregory N.; Gupta, Vipin P.; Okandan, Murat; Watts, Michael R.

    2016-03-15

    A photovoltaic solar concentrator is disclosed with one or more transverse-junction solar cells (also termed point contact solar cells) and a lens located above each solar cell to concentrate sunlight onto the solar cell to generate electricity. Piezoelectric actuators tilt or translate each lens to track the sun using a feedback-control circuit which senses the electricity generated by one or more of the solar cells. The piezoelectric actuators can be coupled through a displacement-multiplier linkage to provide an increased range of movement of each lens. Each lens in the solar concentrator can be supported on a frame (also termed a tilt plate) having three legs, with the movement of the legs being controlled by the piezoelectric actuators.

  16. Photovoltaic solar concentrator

    DOE Patents [OSTI]

    Nielson, Gregory N.; Okandan, Murat; Resnick, Paul J.; Cruz-Campa, Jose Luis

    2012-12-11

    A photovoltaic solar concentrator is disclosed with one or more transverse-junction solar cells (also termed point contact solar cells) and a lens located above each solar cell to concentrate sunlight onto the solar cell to generate electricity. Piezoelectric actuators tilt or translate each lens to track the sun using a feedback-control circuit which senses the electricity generated by one or more of the solar cells. The piezoelectric actuators can be coupled through a displacement-multiplier linkage to provide an increased range of movement of each lens. Each lens in the solar concentrator can be supported on a frame (also termed a tilt plate) having three legs, with the movement of the legs being controlled by the piezoelectric actuators.

  17. Photovoltaic System Performance

    Energy Science and Technology Software Center (OSTI)

    1989-09-25

    PVFORM4.0 is used to design a photovoltaic (PV) system using a set of design parameters which optimize the system's economic potential for the proposed location and the expected operating conditions. PVFORM3.3 has been used to determine PV system size and optimum mounting configuration. The anticipated electrical load determines the system size and the weather and the mounting configuration affect the system output. PVFORM4.0 uses program-supplied default values or their user-supplied equivalents for each of amore » large number of parameters describing the system and time-series data describing the environment to perform a series of hourly calculations to simulate the physical (photovoltaic) performance of a PV system for a one-year period. These iterative calculations sample the performance of the PV system throughout a simulated 365-day year of system operation. Within any simulated day on which system performance is sampled, the calculations are done hourly. The number of days sampled and the interval between them is determined by an input parameter. The results of these calculations are summarized on a monthly basis in output tables and an optional plot file. The program is applicable to grid interactive or stand-alone flat-plate systems. The grid interactive system is assumed to use power purchased from a local utility to supply that portion of the load not met by the simulated PV array. If the array produces more energy than can be consumed by the load, the excess energy is assumed to be sold back to the utility at a constant energy sellback price. If a stand-alone system is being modeled, the program assumes that all energy produced by the simulated PV array is first applied to the external load, and any excess is then used to charge the battery bank. Energy not consumed by the load or the batteries is considered to be wasted.« less

  18. Understanding Biomass Feedstock Variability

    SciTech Connect (OSTI)

    Kevin L. Kenney; William A. Smith; Garold L. Gresham; Tyler L. Westover

    2013-01-01

    If the singular goal of biomass logistics and the design of biomass feedstock supply systems is to reduce the per ton supply cost of biomass, these systems may very well develop with ultimate unintended consequences of highly variable and reduced quality biomass feedstocks. This paper demonstrates that due to inherent species variabilities, production conditions, and differing harvest, collection, and storage practices, this is a very real scenario that biomass producers and suppliers as well as conversion developers should be aware of. Biomass feedstock attributes of ash, carbohydrates, moisture, and particle morphology will be discussed. We will also discuss specifications for these attributes, inherent variability of these attributes in biomass feedstocks, and approaches and solutions for reducing variability for improving feedstock quality.

  19. Understanding Biomass Feedstock Variability

    SciTech Connect (OSTI)

    Kevin L. Kenney; Garold L. Gresham; William A. Smith; Tyler L. Westover

    2013-01-01

    If the singular goal of biomass logistics and the design of biomass feedstock supply systems is to reduce the per-ton supply cost of biomass, these systems may very well develop with ultimate unintended consequences of highly variable and reduced quality biomass feedstocks. This paper demonstrates that, due to inherent species variabilities, production conditions and differing harvest, collection and storage practices, this is a very real scenario that biomass producers and suppliers as well as conversion developers should be aware of. Biomass feedstock attributes of ash, carbohydrates, moisture and particle morphology will be discussed. We will also discuss specifications for these attributes, inherent variability of these attributes in biomass feedstocks, and approaches and solutions for reducing variability for improving feedstock quality.

  20. Plug-and-Play Photovoltaics

    Broader source: Energy.gov [DOE]

    On December 7, 2012, DOE announced $21 million in funding for the Plug-and-Play Photovoltaics funding opportunity. Part of the SunShot Systems Integration efforts, the following projects were...

  1. Denver International Airport Photovoltaic System

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Denver International Airport (DIA) features a 2-megawatt (MW) photovoltaic (PV) system. DIA also hosts to a second 1.6-MW system. Denver is a Solar America City.

  2. Salem Electric- Photovoltaic Rebate Program

    Broader source: Energy.gov [DOE]

    Salem Electric offers a rebate to residential customers who install solar photovoltaic (PV) systems. The rebate offered is $600 for the first three kilowatts (kWs) installed and $300/kW for any...

  3. Rooftop Photovoltaics Market Penetration Scenarios

    SciTech Connect (OSTI)

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

    2008-02-01

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

  4. Photovoltaic as | Open Energy Information

    Open Energy Info (EERE)

    as Jump to: navigation, search Name: Photovoltaic as Place: Zl-n, Czech Republic Zip: 760 01 Product: Czech developer operating a 1.4MW plant in the Czech Republic. Coordinates:...

  5. NREL: Biomass Research - Biomass Characterization Capabilities

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

    Biomass Characterization Capabilities A photo of a man wearing a white lab coat and looking into a large microscope. A researcher uses an Atomic Force Microscope to image enzymes...

  6. Solid State Photovoltaic Research Branch

    SciTech Connect (OSTI)

    Not Available

    1990-09-01

    This report summarizes the progress of the Solid State Photovoltaic Research Branch of the Solar Energy Research Institute (SERI) from October 1, 1988, through September 30,l 1989. Six technical sections of the report cover these main areas of SERIs in-house research: Semiconductor Crystal Growth, Amorphous Silicon Research, Polycrystalline Thin Films, III-V High-Efficiency Photovoltaic Cells, Solid-State Theory, and Laser Raman and Luminescence Spectroscopy. Sections have been indexed separately for inclusion on the data base.

  7. UTILITY-SCALE PHOTOVOLTAIC SOLAR | Department of Energy

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

    UTILITY-SCALE PHOTOVOLTAIC SOLAR UTILITY-SCALE PHOTOVOLTAIC SOLAR SOLAR: UTILITY-SCALE PHOTOVOLTAIC SOLAR POSTER (1.07 MB) More Documents & Publications UTILITY-SCALE PHOTOVOLTAIC SOLAR Download LPO's Illustrated Poster Series ANTELOPE VALLEY SOLAR RANCH MESQUITE

  8. Photovoltaic array mounting apparatus, systems, and methods

    SciTech Connect (OSTI)

    West, Jack Raymond; Atchley, Brian; Hudson, Tyrus Hawkes; Johansen, Emil

    2015-04-14

    A photovoltaic array, including: (a) supports laid out on a surface in rows and columns; (b) photovoltaic modules positioned on top of the supports; and (c) fasteners connecting the photovoltaic modules to the supports, wherein the supports have an upper pedestal surface and a lower pedestal surface such that the photovoltaic modules are positioned at a non-horizontal angle when edges of the photovoltaic modules are positioned on top of the upper and lower pedestal surfaces, and wherein a portion of the fasteners rotate to lock the photovoltaic modules onto the supports.

  9. Photovoltaic array mounting apparatus, systems, and methods

    DOE Patents [OSTI]

    West, Jack Raymond; Atchley, Brian; Hudson, Tyrus Hawkes; Johansen, Emil

    2016-01-05

    A photovoltaic array, including: (a) supports laid out on a surface in rows and columns; (b) photovoltaic modules positioned on top of the supports; and (c) fasteners connecting the photovoltaic modules to the supports, wherein the supports have an upper pedestal surface and a lower pedestal surface such that the photovoltaic modules are positioned at a non-horizontal angle when edges of the photovoltaic modules are positioned on top of the upper and lower pedestal surfaces, and wherein a portion of the fasteners rotate to lock the photovoltaic modules onto the supports.

  10. PROJECT PROFILE: Degradation Assessment of Fielded CIGS Photovoltaic...

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

    Degradation Assessment of Fielded CIGS Photovoltaic Module Technologies PROJECT PROFILE: Degradation Assessment of Fielded CIGS Photovoltaic Module Technologies Funding ...

  11. Complex pendulum biomass sensor

    DOE Patents [OSTI]

    Hoskinson, Reed L.; Kenney, Kevin L.; Perrenoud, Ben C.

    2007-12-25

    A complex pendulum system biomass sensor having a plurality of pendulums. The plurality of pendulums allow the system to detect a biomass height and density. Each pendulum has an angular deflection sensor and a deflector at a unique height. The pendulums are passed through the biomass and readings from the angular deflection sensors are fed into a control system. The control system determines whether adjustment of machine settings is appropriate and either displays an output to the operator, or adjusts automatically adjusts the machine settings, such as the speed, at which the pendulums are passed through the biomass. In an alternate embodiment, an entanglement sensor is also passed through the biomass to determine the amount of biomass entanglement. This measure of entanglement is also fed into the control system.

  12. Photovoltaic Incentive Design Handbook

    SciTech Connect (OSTI)

    Hoff, T. E.

    2006-12-01

    Investments in customer-owned grid-connected photovoltaic (PV) energy systems are growing at a steady pace. This is due, in part, to the availability of attractive economic incentives offered by public state agencies and utilities. In the United States, these incentives have largely been upfront lump payments tied to the system capacity rating. While capacity-based ''buydowns'' have stimulated the domestic PV market, they have been criticized for subsidizing systems with potentially poor energy performance. As a result, the industry has been forced to consider alternative incentive structures, particularly ones that pay based on long-term measured performance. The industry, however, lacks consensus in the debate over the tradeoffs between upfront incentive payments versus longer-term payments for energy delivery. This handbook is designed for agencies and utilities that offer or intend to offer incentive programs for customer-owned PV systems. Its purpose is to help select, design, and implement incentive programs that best meet programmatic goals. The handbook begins with a discussion of the various available incentive structures and then provides qualitative and quantitative tools necessary to design the most appropriate incentive structure. It concludes with program administration considerations.

  13. Photovoltaics for municipal planners

    SciTech Connect (OSTI)

    Not Available

    1993-04-01

    This booklet is intended for city and county government personnel, as well as community organizations, who deal with supplying, regulating, or recommending electric power resources. Specifically, this document deals with photovoltaic (PV) power, or power from solar cells, which is currently the most cost-effective energy source for electricity requirements that are relatively small, located in isolated areas, or difficult to serve with conventional technology. Recently, PV has been documented to be more cost-effective than conventional alternatives (such as line extensions or engine generators) in dozens of applications within the service territories of electric, gas, and communications utilities. Here, we document numerous cost-effective urban applications, chosen by planners and utilities because they were the most cost-effective option or because they were appropriate for environmental or logistical reasons. These applications occur within various municipal departments, including utility, parks and recreation, traffic engineering, transportation, and planning, and they include lighting applications, communications equipment, corrosion protection, irrigation control equipment, remote monitoring, and even portable power supplies for emergency situations.

  14. NREL: Biomass Research - Webmaster

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

    to reply. Your name: Your email address: Your message: Send Message Printable Version Biomass Research Home Capabilities Projects Facilities Research Staff Working with Us Data &...

  15. NREL: Biomass Research - Projects

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

    Spectrometer analyzes vapors during the gasification and pyrolysis processes. NREL's biomass projects are designed to advance the production of liquid transportation fuels from...

  16. Biomass Processing Photolibrary

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Research related to bioenergy is a major focus in the U.S. as science agencies, universities, and commercial labs seek to create new energy-efficient fuels. The Biomass Processing Project is one of the funded projects of the joint USDA-DOE Biomass Research and Development Initiative. The Biomass Processing Photolibrary has numerous images, but there are no accompanying abstracts to explain what you are seeing. The project website, however, makes available the full text of presentations and publications and also includes an exhaustive biomass glossary that is being developed into an ASAE Standard.

  17. Biomass: Wood as Energy

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

    Coordinator USDA Forest Service State & Private Forestry ... habitat and forest health Modern Woody Biomass ... Requires manual fuel delivery & stoking Pellets Meter ...

  18. Process for treating biomass

    DOE Patents [OSTI]

    Campbell, Timothy J.; Teymouri, Farzaneh

    2015-08-11

    This invention is directed to a process for treating biomass. The biomass is treated with a biomass swelling agent within the vessel to swell or rupture at least a portion of the biomass. A portion of the swelling agent is removed from a first end of the vessel following the treatment. Then steam is introduced into a second end of the vessel different from the first end to further remove swelling agent from the vessel in such a manner that the swelling agent exits the vessel at a relatively low water content.

  19. Process for treating biomass

    DOE Patents [OSTI]

    Campbell, Timothy J; Teymouri, Farzaneh

    2015-11-04

    This invention is directed to a process for treating biomass. The biomass is treated with a biomass swelling agent within the vessel to swell or rupture at least a portion of the biomass. A portion of the swelling agent is removed from a first end of the vessel following the treatment. Then steam is introduced into a second end of the vessel different from the first end to further remove swelling agent from the vessel in such a manner that the swelling agent exits the vessel at a relatively low water content.

  20. Biomass | Open Energy Information

    Open Energy Info (EERE)

    technologies that are used for biomass thermal and combined heat and power (CHP) plants are direct combustion and gasification systems. Direct combustion systems are the...

  1. Biomass Indirect Liquefaction Workshop

    Broader source: Energy.gov [DOE]

    To support research and development (R&D) planning efforts within the Thermochemical Conversion Program, the Bioenergy Technologies Office hosted the Biomass Indirect Liquefaction (IDL)...

  2. Overview of biomass technologies

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    The biomass overview of the Renewable Energy Technology Characterizations describes the technical and economic status of this emerging renewable energy option for electricity supply.

  3. Co-firing biomass

    SciTech Connect (OSTI)

    Hunt, T.; Tennant, D.

    2009-11-15

    Concern about global warming has altered the landscape for fossil-fuel combustion. The advantages and challenges of co-firing biomass and coal are discussed. 2 photos.

  4. Biomass Feasibility Analysis Report

    SciTech Connect (OSTI)

    Lipscomb, Brian

    2015-03-30

    Feasibility study to determine technical and economic viability of a co-generation biomass fuel power plant for the Confederated Salish and Kootenai Tribes.

  5. Major Biomass Conference

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

    Top Scientists, Industry and Government Leaders to Gather for Major Biomass Conference International gathering to focus on business successes, technology updates, facility tours ...

  6. Biomass: Biogas Generator

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

    BIOGAS GENERATOR Curriculum: Biomass Power (organic chemistry, chemicalcarbon cycles, plants, energy resourcestransformations) Grade Level: Middle School (6-8) Small groups (3 to ...

  7. Gasification-based biomass

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    The gasification-based biomass section of the Renewable Energy Technology Characterizations describes the technical and economic status of this emerging renewable energy option for electricity supply.

  8. Biomass Energy Basics | NREL

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

    Biomass Energy Basics We have used biomass energy, or "bioenergy"-the energy from plants and plant-derived materials-since people began burning wood to cook food and keep warm. Wood is still the largest biomass energy resource today, but other sources of biomass can also be used. These include food crops, grassy and woody plants, residues from agriculture or forestry, oil-rich algae, and the organic component of municipal and industrial wastes. Even the fumes from landfills (which are

  9. Direct-fired biomass

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    The direct-fired biomass section of the Renewable Energy Technology Characterizations describes the technical and economic status of this emerging renewable energy option for electricity supply.

  10. Wheelabrator Westchester Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Westchester Biomass Facility Jump to: navigation, search Name Wheelabrator Westchester Biomass Facility Facility Wheelabrator Westchester Sector Biomass Facility Type Municipal...

  11. Process Development for Nanostructured Photovoltaics

    SciTech Connect (OSTI)

    Elam, Jeffrey W.

    2015-01-01

    Photovoltaic manufacturing is an emerging industry that promises a carbon-free, nearly limitless source of energy for our nation. However, the high-temperature manufacturing processes used for conventional silicon-based photovoltaics are extremely energy-intensive and expensive. This high cost imposes a critical barrier to the widespread implementation of photovoltaic technology. Argonne National Laboratory and its partners recently invented new methods for manufacturing nanostructured photovoltaic devices that allow dramatic savings in materials, process energy, and cost. These methods are based on atomic layer deposition, a thin film synthesis technique that has been commercialized for the mass production of semiconductor microelectronics. The goal of this project was to develop these low-cost fabrication methods for the high efficiency production of nanostructured photovoltaics, and to demonstrate these methods in solar cell manufacturing. We achieved this goal in two ways: 1) we demonstrated the benefits of these coatings in the laboratory by scaling-up the fabrication of low-cost dye sensitized solar cells; 2) we used our coating technology to reduce the manufacturing cost of solar cells under development by our industrial partners.

  12. Photovoltaic product directory and buyers guide

    SciTech Connect (OSTI)

    Watts, R.L.; Smith, S.A.; Mazzucchi, R.P.

    1981-06-01

    Basic information on photovoltaic conversion technology is provided for those unfamiliar with the field. Various types of photovoltaic products and systems currently available off-the-shelf are described. These include products without batteries, battery chargers, power packages, home electric systems, and partial systems. Procedures are given for designing a photovoltaic system from scratch. A few custom photovoltaic systems are described, and a list is compiled of photovoltaic firms which can provide custom systems. Guidance is offered for deciding whether or not to use photovoltaic products. A variety of installations are described and their performance is appraised by the owners. Information is given on various financial incentives available from state and federal governments. Sources of additional information on photovoltaics are listed. A matrix is provided indicating the sources of various types of photovoltaic products. The addresses of suppliers are listed. (LEW)

  13. ULTRA BARRIER TOPSHEET (UBT) FOR FLEXIBLE PHOTOVOLTAICS

    SciTech Connect (OSTI)

    DeScioli, Derek

    2013-06-01

    This slide-show presents 3M photovoltaic-related products, particularly flexible components. Emphasis is on the 3M Ultra Barrier Solar Films. Topics covered include reliability and qualification testing and flexible photovoltaic encapsulation costs.

  14. Mounting support for a photovoltaic module

    DOE Patents [OSTI]

    Brandt, Gregory Michael; Barsun, Stephan K.; Coleman, Nathaniel T.; Zhou, Yin

    2013-03-26

    A mounting support for a photovoltaic module is described. The mounting support includes a foundation having an integrated wire-way ledge portion. A photovoltaic module support mechanism is coupled with the foundation.

  15. Plug-and-Play Photovoltaics Funding Opportunity

    Office of Energy Efficiency and Renewable Energy (EERE)

    Through the Plug-and-Play Photovoltaics program, DOE will advance the development of a commercial plug-and-play photovoltaic (PV) system, an off-the-shelf product that is fully inclusive with...

  16. Thin film photovoltaic panel and method

    DOE Patents [OSTI]

    Ackerman, Bruce; Albright, Scot P.; Jordan, John F.

    1991-06-11

    A thin film photovoltaic panel includes a backcap for protecting the active components of the photovoltaic cells from adverse environmental elements. A spacing between the backcap and a top electrode layer is preferably filled with a desiccant to further reduce water vapor contamination of the environment surrounding the photovoltaic cells. The contamination of the spacing between the backcap and the cells may be further reduced by passing a selected gas through the spacing subsequent to sealing the backcap to the base of the photovoltaic panels, and once purged this spacing may be filled with an inert gas. The techniques of the present invention are preferably applied to thin film photovoltaic panels each formed from a plurality of photovoltaic cells arranged on a vitreous substrate. The stability of photovoltaic conversion efficiency remains relatively high during the life of the photovoltaic panel, and the cost of manufacturing highly efficient panels with such improved stability is significantly reduced.

  17. Polar Photovoltaics Co Ltd | Open Energy Information

    Open Energy Info (EERE)

    Polar Photovoltaics Co Ltd Jump to: navigation, search Name: Polar Photovoltaics Co Ltd Place: Bengbu, Anhui Province, China Zip: 233030 Product: A Chinese a-Si thin film PV cell...

  18. Canrom Photovoltaics Inc | Open Energy Information

    Open Energy Info (EERE)

    Canrom Photovoltaics Inc Jump to: navigation, search Name: Canrom Photovoltaics Inc Place: Niagara Falls, New York Zip: 14305 Sector: Solar Product: Developer of a thin-film CdTe...

  19. Photovoltaic Cell Basics | Department of Energy

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

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

  20. Concentrator Photovoltaic System Basics | Department of Energy

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

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

  1. NREL: Photovoltaics Research - Thin Film Photovoltaic Partnership Project

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

    Thin Film Photovoltaic Partnership Project NREL's Thin Film Photovoltaic (PV) Partnership Project led R&D on emerging thin-film solar technologies in the United States from 1994 to 2009. The project made many advances in thin-film PV technologies that allowed the United States to attain world leadership in this area of solar technology. Three national R&D teams focused on thin-film semiconductor materials: amorphous silicon (a-Si), cadmium telluride (CdTe), and copper indium gallium

  2. PROJECT PROFILE: Photovoltaic Stakeholder Engagement Initiatives |

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

    Department of Energy Photovoltaic Stakeholder Engagement Initiatives PROJECT PROFILE: Photovoltaic Stakeholder Engagement Initiatives Funding Opportunity: SuNLaMP SunShot Subprogram: Photovoltaics Location: Sandia National Lab, Albuquerque, NM SunShot Award Amount: $89,000 This project is focused on independent stakeholder engagement activities conducted by Sandia National Laboratory relating to photovoltaic (PV) outreach at the national and international level. APPROACH The International

  3. Reducing Photovoltaic Costs | Department of Energy

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

    Photovoltaics » Reducing Photovoltaic Costs Reducing Photovoltaic Costs Photo of gloved hands pouring liquid from a glass bottle to glass beaker. The development of more efficient, affordable photovoltaics (PV) and concentrating solar power (CSP) technologies are crucial to the U.S. Department of Energy (DOE) SunShot Initiative, and making solar cost-competitive with other sources of energy. DOE is fueling innovative solar technology solutions with focused project funding and partnerships with

  4. Funding Opportunity Announcement: Photovoltaic Research & Development

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

    (PVRD) | Department of Energy Photovoltaic Research & Development (PVRD) Funding Opportunity Announcement: Photovoltaic Research & Development (PVRD) Funding Number: DE-FOA-0001387 Funding Amount: $20,000,000 The Photovoltaic Research & Development (PVRD) funding opportunity will fund approximately 30 to 35 projects that will advance the limits of photovoltaic cell and module performance toward and beyond the 2020 SunShot goals. Successful applicants will demonstrate a convincing

  5. Florida Biomass Energy LLC | Open Energy Information

    Open Energy Info (EERE)

    LLC Jump to: navigation, search Name: Florida Biomass Energy, LLC Place: Florida Sector: Biomass Product: Florida-based biomass project developer. References: Florida Biomass...

  6. Atlantic Biomass Conversions Inc | Open Energy Information

    Open Energy Info (EERE)

    Biomass Conversions Inc Jump to: navigation, search Name: Atlantic Biomass Conversions Inc Place: Frederick, Maryland Sector: Biomass Product: Atlantic Biomass Conversions is...

  7. Biomass Power Association (BPA) | Open Energy Information

    Open Energy Info (EERE)

    Summary LAUNCH TOOL Name: Biomass Power Association (BPA) AgencyCompany Organization: Biomass Power Association Sector: Energy Focus Area: Biomass, - Biomass Combustion, -...

  8. Colusa Biomass Energy Corporation | Open Energy Information

    Open Energy Info (EERE)

    Biomass Energy Corporation Jump to: navigation, search Name: Colusa Biomass Energy Corporation Place: Colusa, California Zip: 95932 Sector: Biomass Product: Colusa Biomass Energy...

  9. Interband Cascade Photovoltaic Cells

    SciTech Connect (OSTI)

    Yang, Rui Q.; Santos, Michael B.; Johnson, Matthew B.

    2014-09-24

    In this project, we are performing basic and applied research to systematically investigate our newly proposed interband cascade (IC) photovoltaic (PV) cells [1]. These cells follow from the great success of infrared IC lasers [2-3] that pioneered the use of quantum-engineered IC structures. This quantum-engineered approach will enable PV cells to efficiently convert infrared radiation from the sun or other heat source, to electricity. Such cells will have important applications for more efficient use of solar energy, waste-heat recovery, and power beaming in combination with mid-infrared lasers. The objectives of our investigations are to: achieve extensive understanding of the fundamental aspects of the proposed PV structures, develop the necessary knowledge for making such IC PV cells, and demonstrate prototype working PV cells. This research will focus on IC PV structures and their segments for utilizing infrared radiation with wavelengths from 2 to 5 μm, a range well suited for emission by heat sources (1,000-2,000 K) that are widely available from combustion systems. The long-term goal of this project is to push PV technology to longer wavelengths, allowing for relatively low-temperature thermal sources. Our investigations address material quality, electrical and optical properties, and their interplay for the different regions of an IC PV structure. The tasks involve: design, modeling and optimization of IC PV structures, molecular beam epitaxial growth of PV structures and relevant segments, material characterization, prototype device fabrication and testing. At the end of this program, we expect to generate new cutting-edge knowledge in the design and understanding of quantum-engineered semiconductor structures, and demonstrate the concepts for IC PV devices with high conversion efficiencies.

  10. Photovoltaic hydrogen production

    SciTech Connect (OSTI)

    Hiser, H.W.; Memory, S.B.; Veziroglu, T.N.; Padin, J.

    1996-10-01

    This is a new project, which started in June 1995, and involves photovoltaic hydrogen production as a fuel production method for the future. In order to increase the hydrogen yield, it was decided to use hybrid solar collectors to generate D.C. electricity, as well as high temperature steam for input to the electrolyzer. In this way, some of the energy needed to dissociate the water is supplied in the form of heat (or low grade energy), to generate steam, which results in a reduction of electrical energy (or high grade energy) needed. As a result, solar to hydrogen conversion efficiency is increased. In the above stated system, the collector location, the collector tracking sub-system (i.e., orientation/rotation), and the steam temperature have been taken as variables. Five locations selected - in order to consider a variety of latitudes, altitudes, cloud coverage and atmospheric conditions - are Atlanta, Denver, Miami, Phoenix and Salt Lake City. Plain PV and hybrid solar collectors for a stationary south facing system and five different collector rotation systems have been analyzed. Steam temperatures have been varied between 200{degrees}C and 1200{degrees}C. During the first year, solar to hydrogen conversion efficiencies have been considered. The results show that higher steam temperatures, 2 dimensional tracking system, higher elevations and dryer climates causes higher conversion efficiencies. Cost effectiveness of the sub-systems and of the overall system will be analyzed during the second year. Also, initial studies will be made of an advanced high efficiency hybrid solar hydrogen production system.

  11. Biomass Research Program

    ScienceCinema (OSTI)

    Kenney, Kevin; Wright, Christopher; Shelton-Davis, Colleen

    2013-05-28

    INL's mission is to achieve DOE's vision of supplying high-quality raw biomass; preprocessing biomass into advanced bioenergy feedstocks; and delivering bioenergy commodities to biorefineries. You can learn more about research like this at the lab's facebook site http://www.facebook.com/idahonationallaboratory.

  12. Cadmium telluride photovoltaic radiation detector

    DOE Patents [OSTI]

    Agouridis, D.C.; Fox, R.J.

    A dosimetry-type radiation detector is provided which employs a polycrystalline, chlorine-compensated cadmium telluride wafer fabricated to operate as a photovoltaic current generator used as the basic detecting element. A photovoltaic junction is formed in the wafer by painting one face of the cadmium telluride wafer with an n-type semi-conductive material. The opposite face of the wafer is painted with an electrically conductive material to serve as a current collector. The detector is mounted in a hermetically sealed vacuum containment. The detector is operated in a photovoltaic mode (zero bias) while DC coupled to a symmetrical differential current amplifier having a very low input impedance. The amplifier converts the current signal generated by radiation impinging upon the barrier surface face of the wafer to a voltage which is supplied to a voltmeter calibrated to read quantitatively the level of radiation incident upon the detecting wafer.

  13. Cadmium telluride photovoltaic radiation detector

    DOE Patents [OSTI]

    Agouridis, Dimitrios C.; Fox, Richard J.

    1981-01-01

    A dosimetry-type radiation detector is provided which employs a polycrystalline, chlorine-compensated cadmium telluride wafer fabricated to operate as a photovoltaic current generator used as the basic detecting element. A photovoltaic junction is formed in the wafer by painting one face of the cadmium telluride wafer with an n-type semiconductive material. The opposite face of the wafer is painted with an electrically conductive material to serve as a current collector. The detector is mounted in a hermetically sealed vacuum containment. The detector is operated in a photovoltaic mode (zero bias) while DC coupled to a symmetrical differential current amplifier having a very low input impedance. The amplifier converts the current signal generated by radiation impinging upon the barrier surface face of the wafer to a voltage which is supplied to a voltmeter calibrated to read quantitatively the level of radiation incident upon the detecting wafer.

  14. Photovoltaic Subcontract Program, FY 1991

    SciTech Connect (OSTI)

    Not Available

    1992-03-01

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

  15. International photovoltaic products and manufacturers directory, 1995

    SciTech Connect (OSTI)

    Shepperd, L.W.

    1995-11-01

    This international directory of more than 500 photovoltaic-related manufacturers is intended to guide potential users of photovoltaics to sources for systems and their components. Two indexes help the user to locate firms and materials. A glossary describes equipment and terminology commonly used in the photovoltaic industry.

  16. NREL: Biomass Research - Projects in Biomass Process and Sustainabilit...

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

    Projects in Biomass Process and Sustainability Analyses Researchers at NREL use biomass process and sustainability analyses to understand the economic, technical, and global ...

  17. NREL: Biomass Research - Capabilities in Biomass Process and...

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

    Capabilities in Biomass Process and Sustainability Analyses A photo of a woman and four ... A team of NREL researchers uses biomass process and sustainability analyses to bridge the ...

  18. Micro-Sized Photovoltaic Cells

    Office of Energy Efficiency and Renewable Energy (EERE)

    This photograph features Greg Nielson, a project leader at Sandia National Laboratoies. He holds a solar cell test prototype with a microscale lens array fastened above it. Together, the cell and lens help create a concentrated photovoltaic unit. The tiny cells could turn a person into a walking solar battery charger if they were fastened to flexible substrates molded around unusual shapes, such as clothing. The solar particles, fabricated of crystalline silicon, hold the potential for a variety of new applications. They are expected eventually to be less expensive and have greater efficiencies than current photovoltaic collectors that are pieced together with 6-inch- square solar wafers.

  19. Aternating current photovoltaic building block

    DOE Patents [OSTI]

    Bower, Ward Issac; Thomas, Michael G.; Ruby, Douglas S.

    2004-06-15

    A modular apparatus for and method of alternating current photovoltaic power generation comprising via a photovoltaic module, generating power in the form of direct current; and converting direct current to alternating current and exporting power via one or more power conversion and transfer units attached to the module, each unit comprising a unitary housing extending a length or width of the module, which housing comprises: contact means for receiving direct current from the module; one or more direct current-to-alternating current inverters; an alternating current bus; and contact means for receiving alternating current from the one or more inverters.

  20. Photovoltaic cell and production thereof

    DOE Patents [OSTI]

    Narayanan, Srinivasamohan; Kumar, Bikash

    2008-07-22

    An efficient photovoltaic cell, and its process of manufacture, is disclosed wherein the back surface p-n junction is removed from a doped substrate having an oppositely doped emitter layer. A front surface and edges and optionally the back surface periphery are masked and a back surface etch is performed. The mask is not removed and acts as an anti-reflective coating, a passivating agent, or both. The photovoltaic cell retains an untextured back surface whether or not the front is textured and the dopant layer on the back surface is removed to enhance the cell efficiency. Optionally, a back surface field is formed.

  1. Recycling Of Cis Photovoltaic Waste

    DOE Patents [OSTI]

    Drinkard, Jr., William F.; Long, Mark O.; Goozner; Robert E.

    1998-07-14

    A method for extracting and reclaiming metals from scrap CIS photovoltaic cells and associated photovoltaic manufacturing waste by leaching the waste with dilute nitric acid, skimming any plastic material from the top of the leaching solution, separating glass substrate from the leachate, electrolyzing the leachate to plate a copper and selenium metal mixture onto a first cathode, replacing the cathode with a second cathode, re-electrolyzing the leachate to plate cadmium onto the second cathode, separating the copper from selenium, and evaporating the depleted leachate to yield a zinc and indium containing solid.

  2. Photovoltaic water pumping for Bolivia

    SciTech Connect (OSTI)

    Post, H.N.; Garvison, P.

    1987-01-01

    This paper describes the design, installation and performance of photovoltaically-powered water pumping systems which provide potable water to residents of three villages in the Altiplano region of Bolivia. The installation of these systems during August 1986 was the culmination of a cooperative effort between The World Bank, US Department of Energy and the Bolivian government. This project was configured to demonstrate, through pilot systems, the many potential benefits of using photovoltaic water pumping in developing countries. The lessons learned through the procurement and installation of these systems are discussed and the resulting benefits of the project to international lending institutions, US industry, and the Bolivian participants are examined.

  3. Basic photovoltaic principles and methods

    SciTech Connect (OSTI)

    Hersch, P.; Zweibel, K.

    1982-02-01

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

  4. NREL: Biomass Research - Research Staff

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

    Thomas.Foust@nrel.gov Bratis, Adam Management, Biomass Laboratory Program Manager Adam.Bratis@nrel.gov Chum, Helena Management, Biomass Fellow Helena.Chum@nrel.gov Pienkos,...

  5. NREL: Biomass Research Home Page

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

    Photo of a technician completing a laboratory procedure Biomass Compositional Analysis Find laboratory analytical procedures for standard biomass analysis. Photo of the Integrated...

  6. Investigating and Using Biomass Gases

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

    Investigating and Using Biomass Gases Grades: 9-12 Topic: Biomass Authors: Eric Benson and Melissa Highfill Owner: National Renewable Energy Laboratory This educational material is...

  7. Rapid screening buffer layers in photovoltaics

    SciTech Connect (OSTI)

    List, III, Frederick Alyious; Tuncer, Enis

    2014-09-09

    An apparatus and method of testing electrical impedance of a multiplicity of regions of a photovoltaic surface includes providing a multi-tipped impedance sensor with a multiplicity of spaced apart impedance probes separated by an insulating material, wherein each impedance probe includes a first end adapted for contact with a photovoltaic surface and a second end in operable communication with an impedance measuring device. The multi-tipped impedance sensor is used to contact the photovoltaic surface and electrical impedance of the photovoltaic material is measured between individual first ends of the probes to characterize the quality of the photovoltaic surface.

  8. Hydropyrolysis of biomass

    SciTech Connect (OSTI)

    Kobayashi, Atsushi; Steinberg, M.

    1992-01-01

    The pyrolysis and hydropyrolysis of biomass was investigated. Experimental runs using the biomass (Poplar wood sawdust) were performed using a tubular reactor of dimensions 1 inch inside diameter and 8 feet long heated at a temperature of 800 C and pressures between 450 and 750 psig. At low heat-up rate the reaction precedes in two steps. First pyrolysis takes place at temperatures of 300 to 400 c and subsequent hydropyrolysis takes place at 700 C and above. This is also confirmed by pressurized thermogravimetric analysis (PTGA). Under conditions of rapid heat-up at higher temperatures and higher hydrogen pressure gasification and hydrogasification of biomass is especially effective in producing carbon monoxide and methane. An overall conversion of 88 to 90 wt % of biomass was obtained. This value is in agreement with the previous work of flash pyrolysis and hydropyrolysis of biomass for rapid heat-up and short residence time. Initial rates of biomass conversion indicate that the rate increases significantly with increase in hydrogen pressure. At 800 C and 755 psig the initial rate of biomass conversion to gases is 0.92 1/min.

  9. NREL Photovoltaic Program FY 1993

    SciTech Connect (OSTI)

    Not Available

    1994-08-01

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

  10. SAM Photovoltaic Model Technical Reference

    SciTech Connect (OSTI)

    Gilman, P.

    2015-05-27

    This manual describes the photovoltaic performance model in the System Advisor Model (SAM). The U.S. Department of Energy’s National Renewable Energy Laboratory maintains and distributes SAM, which is available as a free download from https://sam.nrel.gov. These descriptions are based on SAM 2015.1.30 (SSC 41).

  11. Improved photovoltaic cells and electrodes

    DOE Patents [OSTI]

    Skotheim, T.A.

    1983-06-29

    Improved photovoltaic cells and electrodes for use therein, particularly electrodes employing amorphous silicon or polyacetylene coating are produced by a process which includes filling pinholes or porous openings in the coatings by electrochemical oxidation of selected monomers to deposit insulating polymer in the openings.

  12. Breakthrough: micro-electronic photovoltaics

    ScienceCinema (OSTI)

    Okandan, Murat; Gupta, Vipin

    2014-06-23

    Sandia developed tiny glitter-sized photovoltaic (PV) cells that could revolutionize solar energy collection. The crystalline silicon micro-PV cells will be cheaper and have greater efficiencies than current PV collectors. Micro-PV cells require relatively little material to form well-controlled, highly efficient devices. Cell fabrication uses common microelectric and micro-electromechanical systems (MEMS) techniques.

  13. Electrochemical photovoltaic cells and electrodes

    DOE Patents [OSTI]

    Skotheim, Terje A.

    1984-01-01

    Improved electrochemical photovoltaic cells and electrodes for use therein, particularly electrodes employing amorphous silicon or polyacetylene coating are produced by a process which includes filling pinholes or porous openings in the coatings by electrochemical oxidation of selected monomers to deposit insulating polymer in the openings.

  14. Photovoltaic cells employing zinc phosphide

    DOE Patents [OSTI]

    Barnett, Allen M.; Catalano, Anthony W.; Dalal, Vikram L.; Masi, James V.; Meakin, John D.; Hall, Robert B.

    1984-01-01

    A photovoltaic cell having a zinc phosphide absorber. The zinc phosphide can be a single or multiple crystal slice or a thin polycrystalline film. The cell can be a Schottky barrier, heterojunction or homojunction device. Methods for synthesizing and crystallizing zinc phosphide are disclosed as well as a method for forming thin films.

  15. Photovoltaic Subcontract Program, FY 1990

    SciTech Connect (OSTI)

    Summers, K.A.

    1991-03-01

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

  16. Biomass Basics Webinar

    Broader source: Energy.gov [DOE]

    The Bioenergy Technologies Office (BETO) is hosting a Biomass Basics Webinar on August 27, 2015, from 4:00-4:40pm EDT. This webinar will provide high school students and teachers with background...

  17. NREL: Biomass Research - News

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

    News Below are news stories related to NREL biomass research. Subscribe to the RSS feed RSS . Learn about RSS. June 3, 2015 NREL Cyanobacteria Ramps Up Photosynthesis-and New...

  18. The ultimate biomass refinery

    SciTech Connect (OSTI)

    Bungay, H.R. )

    1988-01-01

    Bits and pieces of refining schemes and both old and new technology have been integrated into a complete biomass harvesting, processing, waste recycle, and marketing complex. These choices are justified with economic estimates and technology assessments.

  19. Biomass Energy Production Incentive

    Office of Energy Efficiency and Renewable Energy (EERE)

    In 2007 South Carolina enacted the Energy Freedom and Rural Development Act, which provides production incentives for certain biomass-energy facilities. Eligible systems earn $0.01 per kilowatt-h...

  20. Biomass 2014 Poster Session

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy’s Bioenergy Technologies Office (BETO) invites students, researchers, public and private organizations, and members of the general public to submit poster abstracts for consideration for the annual Biomass Conference Poster Session. The Biomass 2014 conference theme focuses on topics that are advancing the growth of the bioeconomy, such as improvements in feedstock logistics; promising, innovative pathways for advanced biofuels; and market-enabling co-products.

  1. Biomass Basics Webinar

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

    August 27, 2015 Biomass Basics Alexis Martin Fellow, Bioenergy Technologies Office Department of Energy 2 | Bioenergy Technologies Office Agenda * Overview of Bioenergy * Biomass to Biofuels Life Cycle * Importance of Bioenergy * 2016 BioenergizeME Infographic Challenge 3 | Bioenergy Technologies Office Questions and Comments Please record any questions and comments you may have during the webinar and send them to BioenergizeME@ee.doe.gov As a follow-up to the webinar, the presenter(s) will

  2. Flash hydrogenation of biomass

    SciTech Connect (OSTI)

    Steinberg, M

    1980-01-01

    It is proposed to obtain process chemistry information on the rapid hydrogenation of biomass (wood and other agricultural products) to produce light liquid and gaseous hydrocarbon fuels and feedstocks. The process is referred to as Flash Hydropyrolysis. The information will be of use in the design and evaluation of processes for the conversion of biomass to synthetic fuels and petrochemical feedstocks. Results obtained in an initial experiment are discussed.

  3. 2007 Biomass Program Overview

    SciTech Connect (OSTI)

    none,

    2009-10-27

    The Biomass Program is actively working with public and private partners to meet production and technology needs. With the corn ethanol market growing steadily, researchers are unlocking the potential of non-food biomass sources, such as switchgrass and forest and agricultural residues. In this way, the Program is helping to ensure that cost-effective technologies will be ready to support production goals for advanced biofuels.

  4. Algae Biomass Summit

    Broader source: Energy.gov [DOE]

    The 9th annual Algae Biomass Summit will be hosted at the Washington Marriot Wardman Park in Washington D.C., September 29 – October 2, 2015. The event will gather leaders in algae biomass from all sectors. U.S. Department of Energy Undersecretary Franklin Orr will give a keynote address at the conference, and Bioenergy Technologies Office (BETO) Director Jonathan, Algae Program Manager Alison Goss Eng, and the BETO Algae Team will be in attendance.

  5. Photovoltaic power generation system free of bypass diodes

    SciTech Connect (OSTI)

    Lentine, Anthony L.; Okandan, Murat; Nielson, Gregory N.

    2015-07-28

    A photovoltaic power generation system that includes a solar panel that is free of bypass diodes is described herein. The solar panel includes a plurality of photovoltaic sub-modules, wherein at least two of photovoltaic sub-modules in the plurality of photovoltaic sub-modules are electrically connected in parallel. A photovoltaic sub-module includes a plurality of groups of electrically connected photovoltaic cells, wherein at least two of the groups are electrically connected in series. A photovoltaic group includes a plurality of strings of photovoltaic cells, wherein a string of photovoltaic cells comprises a plurality of photovoltaic cells electrically connected in series. The strings of photovoltaic cells are electrically connected in parallel, and the photovoltaic cells are microsystem-enabled photovoltaic cells.

  6. Biomass 2011 Conference Agenda | Department of Energy

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

    1 Conference Agenda Biomass 2011 Conference Agenda Biomass 2011 Conference Agenda bio2011_full_agenda.pdf (620.42 KB) More Documents & Publications Biomass 2009 Conference Agenda Biomass 2010 Conference Agenda Biomass 2012

  7. Northeast Regional Biomass Program

    SciTech Connect (OSTI)

    Lusk, P.D.

    1992-12-01

    The Northeast Regional Biomass Program has been in operation for a period of nine years. During this time, state managed programs and technical programs have been conducted covering a wide range of activities primarily aim at the use and applications of wood as a fuel. These activities include: assessments of available biomass resources; surveys to determine what industries, businesses, institutions, and utility companies use wood and wood waste for fuel; and workshops, seminars, and demonstrations to provide technical assistance. In the Northeast, an estimated 6.2 million tons of wood are used in the commercial and industrial sector, where 12.5 million cords are used for residential heating annually. Of this useage, 1504.7 mw of power has been generated from biomass. The use of wood energy products has had substantial employment and income benefits in the region. Although wood and woodwaste have received primary emphasis in the regional program, the use of municipal solid waste has received increased emphasis as an energy source. The energy contribution of biomass will increase as potentia users become more familiar with existing feedstocks, technologies, and applications. The Northeast Regional Biomass Program is designed to support region-specific to overcome near-term barriers to biomass energy use.

  8. Biomass cogeneration. A business assessment

    SciTech Connect (OSTI)

    Skelton, J.C.

    1981-11-01

    This guide serves as an overview of the biomass cogeneration area and provides direction for more detailed analysis. The business assessment is based in part on discussions with key officials from firms that have adopted biomass cogeneration systems and from organizations such as utilities, state and federal agencies, and banks that would be directly involved in a biomass cogeneration project. The guide is organized into five chapters: biomass cogeneration systems, biomass cogeneration business considerations, biomass cogeneration economics, biomass cogeneration project planning, and case studies.

  9. Biomass Crop Assistance Program (BCAP) | Open Energy Information

    Open Energy Info (EERE)

    United States Department of Agriculture Partner: Farm Service Agency Sector: Energy, Land Focus Area: Biomass, - Biomass Combustion, - Biomass Gasification, - Biomass...

  10. High voltage photovoltaic power converter

    DOE Patents [OSTI]

    Haigh, Ronald E.; Wojtczuk, Steve; Jacobson, Gerard F.; Hagans, Karla G.

    2001-01-01

    An array of independently connected photovoltaic cells on a semi-insulating substrate contains reflective coatings between the cells to enhance efficiency. A uniform, flat top laser beam profile is illuminated upon the array to produce electrical current having high voltage. An essentially wireless system includes a laser energy source being fed through optic fiber and cast upon the photovoltaic cell array to prevent stray electrical signals prior to use of the current from the array. Direct bandgap, single crystal semiconductor materials, such as GaAs, are commonly used in the array. Useful applications of the system include locations where high voltages are provided to confined spaces such as in explosive detonation, accelerators, photo cathodes and medical appliances.

  11. Photovoltaic performance and reliability workshop

    SciTech Connect (OSTI)

    Mrig, L.

    1993-12-01

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

  12. US photovoltaic patents: 1991--1993

    SciTech Connect (OSTI)

    Pohle, L

    1995-03-01

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

  13. NREL: Photovoltaics Research - PV News

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

    PV News The National Renewable Energy Laboratory Photovoltaic (PV) Research Program highlights latest research and news accomplishments from the laboratory on this page. Subscribe to the RSS feed RSS . Learn about RSS. July 22, 2016 NREL's Kurtz, Tegen Honored for Clean Energy Leadership The U.S. Clean Energy Education & Empowerment (C3E) program has honored Sarah Kurtz and Suzanne Tegen of the Energy Department's National Renewable Energy Laboratory (NREL) for their leadership and

  14. Photovoltaic manufacturing technology, Phase 1

    SciTech Connect (OSTI)

    Not Available

    1992-10-01

    This report describes subcontracted research by the Chronar Corporation, prepared by Advanced Photovoltaic Systems, Inc. (APS) for Phase 1 of the Photovoltaic Manufacturing Technology Development project. Amorphous silicon is chosen as the PV technology that Chronar Corporation and APS believe offers the greatest potential for manufacturing improvements, which, in turn, will result in significant cost reductions and performance improvements in photovoltaic products. The APS Eureka'' facility was chosen as the manufacturing system that can offer the possibility of achieving these production enhancements. The relationship of the Eureka'' facility to Chronar's batch'' plants is discussed. Five key areas are also identified that could meet the objectives of manufacturing potential that could lead to improved performance, reduced manufacturing costs, and significantly increased production. The projected long-term potential benefits of these areas are discussed, as well as problems that may impede the achievement of the hoped-for developments. A significant number of the problems discussed are of a generic nature and could be of general interest to the industry. The final section of this document addresses the cost and time estimates for achieving the solutions to the problems discussed earlier. Emphasis is placed on the number, type, and cost of the human resources required for the project.

  15. NREL: National Center for Photovoltaics Home Page

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

    National Center for Photovoltaics Research Cell Efficiency Records Chart image Download the latest chart on record cell efficiencies and check out explanatory notes. The National Center for Photovoltaics (NCPV) at the National Renewable Energy Laboratory (NREL) focuses on technology innovations that drive industry growth in U.S. photovoltaic (PV) manufacturing. The NCPV is a central resource for our nation's capabilities in PV research, development, deployment, and outreach. To help the U.S.

  16. Next Generation Photovoltaics 3 | Department of Energy

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

    Next Generation Photovoltaics 3 Next Generation Photovoltaics 3 SunShot's next generation PV projects investigate transformational photovoltaic (PV) technologies with the potential to meet SunShot cost targets. The projects' goals are to: Increase efficiency Reduce costs Improve reliability Create more secure and sustainable supply chains. On October 22, 2014, SunShot awarded more than $14 million to 10 research institutions to meet or exceed SunShot targets by improving performance, efficiency,

  17. SERC Photovoltaics for Residential Buildings Webinar Transcript |

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

    Department of Energy Photovoltaics for Residential Buildings Webinar Transcript SERC Photovoltaics for Residential Buildings Webinar Transcript A presentation sponsored by the U.S. Department of Energy about using solar photovoltaics (PV) systems to provide electricity for homes. 20110125_pv_webinar.pdf (109.9 KB) More Documents & Publications Sustainable Energy Resources for Consumers (SERC) - Solar Hot Water Solar Webinar Text Version TAP Webcast Transcript July-29, 2009

  18. PROJECT PROFILE: Mechanically Stacked Hybrid Photovoltaic Tandems |

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

    Department of Energy Mechanically Stacked Hybrid Photovoltaic Tandems PROJECT PROFILE: Mechanically Stacked Hybrid Photovoltaic Tandems Funding Opportunity: SuNLaMP SunShot Subprogram: Photovoltaics Location: National Renewable Energy Laboratory, Golden, CO Amount Awarded: $999,999 Tandem cell architectures present a path toward higher module efficiencies over single junction designs. This project will develop a gallium indium phosphide (GaInP) on silicon mechanically stacked voltage-matched

  19. Crystalline Silicon Photovoltaics Research | Department of Energy

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

    Crystalline Silicon Photovoltaics Research Crystalline Silicon Photovoltaics Research DOE supports crystalline silicon photovoltaic (PV) research and development efforts that lead to market-ready technologies. Below are a list of the projects, summary of the benefits, and discussion on the production and manufacturing of this solar technology. Background Crystalline silicon PV cells are the most common solar cells used in commercially available solar panels, representing 87% of world PV cell

  20. Fact Sheet: Photovoltaics | Department of Energy

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

    Photovoltaics Fact Sheet: Photovoltaics The U.S. Department of Energy (DOE)'s Solar Energy Technologies Office works with industry, academia, national laboratories, and other government agencies to advance solar photovoltaics (PV), which is the direct conversion of sunlight into electricity by a semiconductor, in support of the goals of the SunShot Initiative. SunShot supports research and development to aggressively advance PV technology by improving efficiency and reliability and lowering

  1. Photovoltaic Energy Program Overview Fiscal Year 1996

    SciTech Connect (OSTI)

    1997-05-01

    Significant activities in the National Photovoltaic Program are reported for each of the three main program elements. In Research and Development, advances in thin-film materials and crystalline silicon materials are described. The Technology Development report describes activities in photovoltaic manufacturing technology, industrial expansion, module and array development, and testing photovoltaic system components. Systems Engineering and Applications projects described include projects with government agencies, projects with utilities, documentation of performance for international applications, and product certification.

  2. Lab Breakthrough: Microelectronic Photovoltaics | Department of Energy

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

    Microelectronic Photovoltaics Lab Breakthrough: Microelectronic Photovoltaics June 7, 2012 - 9:31am Addthis Sandia developed tiny glitter-sized photovoltaic (PV) cells that could revolutionize solar energy collection. The crystalline silicon micro-PV cells will be cheaper and have greater efficiencies than current PV collectors. View the entire YouTube Lab Breakthroughs playlist. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What are MEMS? MEMS are

  3. Photovoltaics Competitive Awards | Department of Energy

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

    Competitive Awards Photovoltaics Competitive Awards In support of the goals of SunShot's Photovoltaics subprogram, DOE issues competitive solicitations to fund targeted research projects through funding opportunity announcements (FOAs). Awards are made to universities, national laboratories, and industry. Current Awards Funding Program Year Announced Amount Awarded Photovoltaic Research and Development: Small Innovative Projects in Solar (PVRD-SIPS) 2016 $2M Physics of Reliability: Evaluating

  4. Photovoltaics Research and Development | Department of Energy

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

    Research and Development Photovoltaics Research and Development PV-Activity areas-final-01.png The Photovoltaics (PV) program supports research and development projects that lower manufacturing costs, increase efficiency and performance, and improve reliability of PV technologies, in order to support the widespread deployment of electricity produced directly from sunlight ("photovoltaics"). The PV portfolio includes research directed toward the SunShot Initiative goals as well as

  5. NREL: Photovoltaics Research - Solar Energy Research Facility

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

    Solar Energy Research Facility Photo of the Solar Energy Research Facility. The exterior stepped clerestory of the Solar Energy Research Facility. Photovoltaics (PV) and basic ...

  6. Photovoltaic Solar Projects | Department of Energy

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

    646 Million Sep 2011 CALIFORNIA VALLEY SOLAR RANCH TITLE XVII Photovoltaic Solar NRG Energy, Inc. & NRG Solar, LLC San Luis Obispo, California Loan Guarantee 1.2 ...

  7. Multiband semiconductor compositions for photovoltaic devices...

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

    Hydrogen and Fuel Cell Hydropower, Wave and Tidal Industrial Technologies Solar Photovoltaic Solar Thermal Startup America Vehicles and Fuels Wind Energy Partners (27) Visual...

  8. Nanocrystal and Molecular Precursors for Photovoltaic Applications...

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

    Nanocrystal and Molecular Precursors for Photovoltaic Applications The objective in this proposal is to identify factors that limit the efficiency of nanocrystal based solar cells...

  9. Photovoltaics Value Analysis | Open Energy Information

    Open Energy Info (EERE)

    Tool Summary LAUNCH TOOL Name: Photovoltaics Value Analysis Focus Area: Renewable Energy Topics: Environmental Website: www.nrel.govanalysispdfs42303.pdf Equivalent URI:...

  10. Exploring Photovoltaics (9 investigations) | Department of Energy

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

    Standards are listed at the beginning of the curriculum guide. Owner The NEED Project Lesson PlansActivity Exploring Photovoltaics (9 investigations): Teacher Guide Exploring...

  11. Organic Photovoltaics Research | Department of Energy

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

    and discussion on the production and manufacturing of this solar technology. Background Organic photovoltaic (OPV) solar cells aim to provide an Earth-abundant and ...

  12. Mesa Top Photovoltaic Array (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2009-07-01

    Fact sheet overview of the Mesa Top Photovoltaic Array project implemented by the Department of Energy Golden Office and National Renewable Energy Laboratory.

  13. NREL: Photovoltaics Research - Keith A. Emery

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

    Responsivity Measurements," Proc. 2nd World Conference and Exhibition on Photovoltaic Solar Energy Conversion, Joint Research Center report EUR 18656, p. 2298, 1998. T. Moriarty...

  14. Commercial Photovoltaic Application- California Convention Center

    Office of Energy Efficiency and Renewable Energy (EERE)

    In this b-roll, several photovoltaic arrays turn a California convention center rooftop and parking structure into a source of clean energy.

  15. Photovoltaic System in Philadelphia Center City District

    Broader source: Energy.gov [DOE]

    This photograph features a 3-kilowatt photovoltaic (PV) installation on the roof of a building in the Center City District of Philadelphia, Pennsylvania.

  16. PROJECT PROFILE: Support of International Photovoltaic Module...

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

    This project supports the National Renewable Energy Laboratory's involvement in the Photovoltaic (PV) Module Quality Assurance Task Force (PVQAT) to develop the international test ...

  17. Photovoltaic Systems Installed in Philadelphia Neighborhood

    Office of Energy Efficiency and Renewable Energy (EERE)

    This photograph features the 6-kilowatt (kw) rooftop photovoltaic system that Mercury Solar Systems installed in the Lower Kensington neighborhood of Philadelphia.

  18. Photovoltaic cell with thin CS layer

    DOE Patents [OSTI]

    Jordan, John F.; Albright, Scot P.

    1994-01-18

    An improved photovoltaic panel and method of forming a photovoltaic panel are disclosed for producing a high efficiency CdS/CdTe photovoltaic cell. The photovoltaic panel of the present invention is initially formed with a substantially thick Cds layer, and the effective thickness of the CdS layer is substantially reduced during regrowth to both form larger diameter CdTe crystals and substantially reduce the effective thickness of the C This invention was made with Government support under Subcontract No. ZL-7-06031-3 awarded by the Department of Energy. The Government has certain rights in this invention.

  19. Photovoltaic Silicon Cell Basics | Department of Energy

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

    ... More Information Learn more about these solar cell materials: Polycrystalline Thin Films Single-Crystalline Thin Films Addthis Related Articles Photovoltaic Cell Material Basics ...

  20. Selecting Solar: Insights into Residential Photovoltaic (PV)...

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

    Selecting Solar: Insights into Residential Photovoltaic (PV) Quote Variation Carolyn Davidson and Robert Margolis National Renewable Energy Laboratory Technical Report NREL...

  1. Sandia National Laboratory Photovoltaic Design Resources | Open...

    Open Energy Info (EERE)

    are included, along with additional sources of information and major U.S. PV system suppliers. References Sandia Photovoltaic Research and Development Retrieved from "http:...

  2. Multiband semiconductor compositions for photovoltaic devices...

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

    perfectly satisfying the conditions for single-junction photovoltaics with the potential for power conversion efficiencies surpassing 50%. Inventors: Walukiewicz; Wladyslaw...

  3. Solar Photovoltaic Financing: Residential Sector Deployment ...

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

    Date March 2009 Topic Financing, Incentives & Market Analysis Subprogram Soft Costs Author National Renewable Energy Laboratory Solar Photovoltaic Financing: Residential Sector ...

  4. NREL: Photovoltaics Research - NREL and Partners Demonstrate...

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

    Demonstration project shows utility-scale photovoltaic plants that incorporate ... Council of Texas to conduct a demonstration project on two utility-scale PV plants ...

  5. Photosynthetic water oxidation versus photovoltaic water electrolysis

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

    Center News Research Highlights Center Research News Media about Center Center Video Library Bisfuel Picture Gallery Photosynthetic water oxidation versus photovoltaic water ...

  6. NREL: Photovoltaics Research - News Release Archives

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

    including renewable electricity generation, renewable energy development, clean energy ... that currently cannot host on-site photovoltaic (PV) systems shared solar ...

  7. Recording of SERC Monitoring Technologies- Solar Photovoltaics

    Broader source: Energy.gov [DOE]

    This document provides a transcript of the of SERC Monitoring Technologies - Solar Photovoltaics webinar, presented on 10/20/2011 by Peter McNutt.

  8. Photovoltaics Economic Calculator (United States) | Open Energy...

    Open Energy Info (EERE)

    (United States) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Photovoltaics Economic Calculator (United States) Focus Area: Solar Topics: System & Application...

  9. NREL: Photovoltaics Research - Process Development and Integration...

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

    Process Development and Integration Laboratory Photovoltaics Research Overhead photo a male standing next to a large circular piece of equipment. Work with Us Are you interested in...

  10. NREL: Photovoltaics Research - Materials Applications and Performance...

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

    about the scientists specializing in each area of PV research: National Center for Photovoltaics research staff Materials Applications and Performance research staff Materials...

  11. Computational Design of Interfaces for Photovoltaics | Argonne...

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

    Computational Design of Interfaces for Photovoltaics PI Name: Noa Marom PI Email: nmarom@tulane.edu Institution: Tulane University Allocation Program: ALCC Allocation Hours at...

  12. NREL: Photovoltaics Research - NCPV Partnering Opportunities...

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

    Opportunities for Industry The National Center for Photovoltaics (NCPV) provides several non-proprietary and proprietary partnering opportunities for industry researchers. We are...

  13. Solar photovoltaic reflective trough collection structure

    SciTech Connect (OSTI)

    Anderson, Benjamin J.; Sweatt, William C.; Okandan, Murat; Nielson, Gregory N.

    2015-11-19

    A photovoltaic (PV) solar concentration structure having at least two troughs encapsulated in a rectangular parallelepiped optical plastic structure, with the troughs filled with an optical plastic material, the troughs each having a reflective internal surface and approximately parabolic geometry, and the troughs each including photovoltaic cells situated so that light impinging on the optical plastic material will be concentrated onto the photovoltaic cells. Multiple structures can be connected to provide a solar photovoltaic collection system that provides portable, efficient, low-cost electrical power.

  14. Phoenix Photovoltaic Technology Co | Open Energy Information

    Open Energy Info (EERE)

    Technology Co Jump to: navigation, search Name: Phoenix Photovoltaic Technology Co Place: Anyang City, Henan Province, China Zip: 456400 Product: Henan Province-based mono- and...

  15. Sandia Energy - Microsystems Enabled Photovoltaics (MEPV)

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

    About MEPV Researchers at Sandia National Laboratories are pioneering solar photovoltaic (PV) technologies that are cheaper to produce and easier to install than...

  16. Photovoltaic Energy Technology Module | Open Energy Information

    Open Energy Info (EERE)

    Technology Module Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Photovoltaic Energy Technology Module AgencyCompany Organization: World Bank Sector: Energy Focus...

  17. Ashland Electric Utility - Photovoltaic Rebate Program | Department...

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

    The City of Ashland Conservation Division offers electric customers installing photovoltaic systems a rebate of either 0.50 per watt (residential) or 0.75 per watt...

  18. Photovoltaic Geographical Information System | Open Energy Information

    Open Energy Info (EERE)

    Information System Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Photovoltaic Geographical Information System Focus Area: Renewable Energy Topics: Opportunity...

  19. Photovoltaic Crystalline Silicon Cell Basics | Department of...

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

    Crystalline Silicon Cell Basics Photovoltaic Crystalline Silicon Cell Basics August 20, 2013 - 2:00pm Addthis To separate electrical charges, crystalline silicon cells must have a ...

  20. NREL: Photovoltaics Research - News Release Archives

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

    Department's National Renewable Energy Laboratory ... Photovoltaic (PV) Pricing Trends: Historical, Recent, and Near-Term ... (PV) solar energy systems, according to a ...

  1. Inverted, semitransparent small molecule photovoltaic cells ...

    Office of Scientific and Technical Information (OSTI)

    small molecule photovoltaic cells Authors: Xiao, Xin 1 ; Lee, Kyusang 1 ; Forrest, Stephen R. 2 + Show Author Affiliations Department of Electrical Engineering and Computer...

  2. Sustainable Biomass Supply Systems

    SciTech Connect (OSTI)

    Erin Searcy; Dave Muth; Erin Wilkerson; Shahab Sokansanj; Bryan Jenkins; Peter Titman; Nathan Parker; Quinn Hart; Richard Nelson

    2009-04-01

    The U.S. Department of Energy (DOE) aims to displace 30% of the 2004 gasoline use (60 billion gal/yr) with biofuels by 2030 as outlined in the Energy Independence and Security Act of 2007, which will require 700 million tons of biomass to be sustainably delivered to biorefineries annually. Lignocellulosic biomass will make an important contribution towards meeting DOEs ethanol production goals. For the biofuels industry to be an economically viable enterprise, the feedstock supply system (i.e., moving the biomass from the field to the refinery) cannot contribute more that 30% of the total cost of the biofuel production. The Idaho National Laboratory in collaboration with Oak Ridge National Laboratory, University of California, Davis and Kansas State University are developing a set of tools for identifying economical, sustainable feedstocks on a regional basis based on biorefinery siting.

  3. YEAR 2 BIOMASS UTILIZATION

    SciTech Connect (OSTI)

    Christopher J. Zygarlicke

    2004-11-01

    This Energy & Environmental Research Center (EERC) Year 2 Biomass Utilization Final Technical Report summarizes multiple projects in biopower or bioenergy, transportation biofuels, and bioproducts. A prototype of a novel advanced power system, termed the high-temperature air furnace (HITAF), was tested for performance while converting biomass and coal blends to energy. Three biomass fuels--wood residue or hog fuel, corn stover, and switchgrass--and Wyoming subbituminous coal were acquired for combustion tests in the 3-million-Btu/hr system. Blend levels were 20% biomass--80% coal on a heat basis. Hog fuel was prepared for the upcoming combustion test by air-drying and processing through a hammer mill and screen. A K-Tron biomass feeder capable of operating in both gravimetric and volumetric modes was selected as the HITAF feed system. Two oxide dispersion-strengthened (ODS) alloys that would be used in the HITAF high-temperature heat exchanger were tested for slag corrosion rates. An alumina layer formed on one particular alloy, which was more corrosion-resistant than a chromia layer that formed on the other alloy. Research activities were completed in the development of an atmospheric pressure, fluidized-bed pyrolysis-type system called the controlled spontaneous reactor (CSR), which is used to process and condition biomass. Tree trimmings were physically and chemically altered by the CSR process, resulting in a fuel that was very suitable for feeding into a coal combustion or gasification system with little or no feed system modifications required. Experimental procedures were successful for producing hydrogen from biomass using the bacteria Thermotoga, a deep-ocean thermal vent organism. Analytical procedures for hydrogen were evaluated, a gas chromatography (GC) method was derived for measuring hydrogen yields, and adaptation culturing and protocols for mutagenesis were initiated to better develop strains that can use biomass cellulose. Fly ash derived from

  4. Minimally refined biomass fuel

    DOE Patents [OSTI]

    Pearson, Richard K.; Hirschfeld, Tomas B.

    1984-01-01

    A minimally refined fluid composition, suitable as a fuel mixture and derived from biomass material, is comprised of one or more water-soluble carbohydrates such as sucrose, one or more alcohols having less than four carbons, and water. The carbohydrate provides the fuel source; water solubilizes the carbohydrates; and the alcohol aids in the combustion of the carbohydrate and reduces the vicosity of the carbohydrate/water solution. Because less energy is required to obtain the carbohydrate from the raw biomass than alcohol, an overall energy savings is realized compared to fuels employing alcohol as the primary fuel.

  5. Fixed Bed Biomass Gasifier

    SciTech Connect (OSTI)

    Carl Bielenberg

    2006-03-31

    The report details work performed by Gazogen to develop a novel biomass gasifier for producimg electricity from commercially available hardwood chips. The research conducted by Gazogen under this grant was intended to demonstrate the technical and economic feasibility of a new means of producing electricity from wood chips and other biomass and carbonaceous fuels. The technical feasibility of the technology has been furthered as a result of the DOE grant, and work is expected to continue. The economic feasibility can only be shown when all operational problems have been overocme. The technology could eventually provide a means of producing electricity on a decentralized basis from sustainably cultivated plants or plant by-products.

  6. Cost and Potential of Monolithic CIGS Photovoltaic Modules (Presentati...

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

    Cost and Potential of Monolithic CIGS Photovoltaic Modules IEEE Photovoltaic Specialists Conference, New Orleans Kelsey A. W. Horowitz and Michael Woodhouse June 17, 2015 NREL...

  7. High-efficiency, monolithic, multi-bandgap, tandem photovoltaic...

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

    Tidal Industrial Technologies Solar Photovoltaic Solar Thermal Startup America Vehicles ... High-efficiency, monolithic, multi-bandgap, tandem photovoltaic energy converters United ...

  8. Sandia Participation in the 39th IEEE Photovoltaic Specialists...

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

    Participation in the 39th IEEE Photovoltaic Specialists (PVSC) Conference - Sandia Energy ... Energy Systems LaboratoryBrayton Lab Photovoltaic Systems Evaluation Laboratory PV ...

  9. Sandia Energy Photovoltaic Regional Testing Center (PV RTC...

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

    feed 0 Sandians Win 'Best Paper' Award at Photovoltaic Conference in Japan http:energy.sandia.govsandians-win-best-paper-award-at-photovoltaic-conference-in-j...

  10. Solar Junction Develops World Record Setting Concentrated Photovoltaic...

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

    Junction Develops World Record Setting Concentrated Photovoltaic Solar Cell Solar Junction Develops World Record Setting Concentrated Photovoltaic Solar Cell April 18, 2013 - ...

  11. Technology Advances Needed for Photovoltaics to Achieve Widespread...

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

    Technology Advances Needed for Photovoltaics to Achieve Widespread Grid Price Parity Technology Advances Needed for Photovoltaics to Achieve Widespread Grid Price Parity Abstract: ...

  12. EA-1638: Solyndra, Inc. Photovoltaic Manufacturing Facility in...

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

    8: Solyndra, Inc. Photovoltaic Manufacturing Facility in Fremont, CA EA-1638: Solyndra, Inc. Photovoltaic Manufacturing Facility in Fremont, CA March 2, 2009 EA-1638: Final ...

  13. Low Capital Photovoltaic Panel Electrical Output-Booster System...

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

    Low Capital Photovoltaic Panel Electrical Output-Booster System Low Capital Photovoltaic Panel Electrical Output-Booster System This presentation summarizes the information given ...

  14. Case Study: Mobile Photovoltaic System at Bechler Meadows Ranger...

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

    Mobile Photovoltaic System at Bechler Meadows Ranger Station, Yellowstone National Park Case Study: Mobile Photovoltaic System at Bechler Meadows Ranger Station, Yellowstone ...

  15. Retrospective Benefit-Cost Evaluation of DOE Investments in Photovolta...

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

    U.S. Department of Energy's (DOE) investment in photovoltaic (PV) technology development. ... Retrospective Benefit-Cost Evaluation of DOE Investment in Photovoltaic Energy Systems ...

  16. Singlet Exciton Fission in Polyacenes: Photophysics and Photovoltaic...

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

    Exciton Fission in Polyacenes: Photophysics and Photovoltaic Applications December 13, ... However, the efficiency of any single-bandgap photovoltaic device under solar irradiation ...

  17. High-Performance Home Technologies: Solar Thermal & Photovoltaic...

    Energy Savers [EERE]

    Solar Thermal & Photovoltaic Systems; Volume 6 Building America Best Practices Series High-Performance Home Technologies: Solar Thermal & Photovoltaic Systems; Volume 6 ...

  18. Sandia Labs' Photovoltaic Systems Evaluation Lab (PSEL) Marks...

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

    Labs' Photovoltaic Systems Evaluation Lab (PSEL) Marks Accomplishments & Adds Capabilities ... Energy Systems LaboratoryBrayton Lab Photovoltaic Systems Evaluation Laboratory PV ...

  19. Recommendations for Maximizing Battery Life in Photovoltaic Systems...

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

    use of batteries in small stand-alone photovoltaic system drawn from over a decade of ... More Documents & Publications Study Guide for Photovoltaic System Installers and Sample ...

  20. Factors Affecting Power Output by Photovoltaic Cells Lesson

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

    Factors Affecting Power Output by Photovoltaic Cells Grade Level(s): IB 2 (Senior - 3 ... C.8 Photovoltaic cells and dye-sensitized solar cells (DSSC) Understandings: * Solar ...

  1. FEMP Offers New Training on Photovoltaic Operations and Maintenance...

    Energy Savers [EERE]

    Training on Photovoltaic Operations and Maintenance Best Practices FEMP Offers New Training on Photovoltaic Operations and Maintenance Best Practices November 4, 2014 - 2:40pm ...

  2. Partial Shade Stress Test for Thin-Film Photovoltaic Modules...

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

    Partial Shade Stress Test for Thin-Film Photovoltaic Modules Preprint Timothy J. ... Partial shade stress test for thin-film photovoltaic modules Timothy J Silverman , ...

  3. Solar Photovoltaic Financing: Deployment on Public Property by...

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

    Solar Photovoltaic Financing: Deployment on Public Property by State and Local Governments Solar Photovoltaic Financing: Deployment on Public Property by State and Local ...

  4. Shanghai Hi Show Photovoltaic Science Technology Co Ltd | Open...

    Open Energy Info (EERE)

    Hi Show Photovoltaic Science Technology Co Ltd Jump to: navigation, search Name: Shanghai Hi-Show Photovoltaic Science & Technology Co., Ltd Place: Shanghai Municipality, China...

  5. Sustainable Energy Resources for Consumers (SERC) - Solar Photovoltaic...

    Energy Savers [EERE]

    Solar Photovoltaics Sustainable Energy Resources for Consumers (SERC) - Solar Photovoltaics This presentation, aimed at Sustainable Energy Resources for Consumers (SERC) grantees, ...

  6. Udhaya Energy Photovoltaics P Ltd UPV Solar | Open Energy Information

    Open Energy Info (EERE)

    Udhaya Energy Photovoltaics P Ltd UPV Solar Jump to: navigation, search Name: Udhaya Energy Photovoltaics (P) Ltd. (UPV Solar) Place: Coimbatore, Tamil Nadu, India Zip: 641 407...

  7. National Center for Photovoltaics NCPV | Open Energy Information

    Open Energy Info (EERE)

    Center for Photovoltaics NCPV Jump to: navigation, search Name: National Center for Photovoltaics (NCPV) Product: String representation "The National Ce ... ics community.'" is too...

  8. PVM Lines and Services LLC aka PVML Photovoltaics | Open Energy...

    Open Energy Info (EERE)

    PVM Lines and Services LLC aka PVML Photovoltaics Jump to: navigation, search Name: PVM Lines and Services LLC (aka PVML Photovoltaics) Place: Princeton, New Jersey Zip: 8540...

  9. Pioneer Valley Photovoltaics Cooperative aka PV Squared | Open...

    Open Energy Info (EERE)

    Photovoltaics Cooperative aka PV Squared Jump to: navigation, search Name: Pioneer Valley Photovoltaics Cooperative (aka PV Squared) Place: New Britain, Connecticut Zip: 6051...

  10. UPL USL Photovoltaics Pvt Ltd | Open Energy Information

    Open Energy Info (EERE)

    UPL USL Photovoltaics Pvt Ltd Jump to: navigation, search Name: UPL (USL Photovoltaics Pvt) Ltd. Place: Coimbatore, Tamil Nadu, India Zip: 641 014 Product: Coimbatore-based...

  11. NREL: Photovoltaics Research - Sara MacAlpine, Ph.D.

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

    at the 39th IEEE Photovoltaic Specialists Conference (PVSC). Printable Version Photovoltaics Research Home Silicon Polycrystalline Thin Films Multijunctions New Materials,...

  12. Renewable Energies and Photovoltaics Spain S L REPS | Open Energy...

    Open Energy Info (EERE)

    and Photovoltaics Spain S L REPS Jump to: navigation, search Name: Renewable Energies and Photovoltaics Spain S.L. (REPS) Place: Spain Sector: Solar Product: Spanish solar project...

  13. EPV Solar Inc formerly Energy Photovoltaics | Open Energy Information

    Open Energy Info (EERE)

    EPV Solar Inc formerly Energy Photovoltaics Jump to: navigation, search Name: EPV Solar Inc (formerly Energy Photovoltaics) Place: Robbinsville, New Jersey Zip: 8691 Product: US...

  14. Jiangsu Shunfeng Photovoltaic Technology Co Ltd | Open Energy...

    Open Energy Info (EERE)

    Shunfeng Photovoltaic Technology Co Ltd Jump to: navigation, search Name: Jiangsu Shunfeng Photovoltaic Technology Co Ltd Place: Changzhou, China Zip: 213169 Product: Manufacturer...

  15. Ningbo Zhousheng Solar Photovoltaic Manufactory Co Ltd | Open...

    Open Energy Info (EERE)

    Zhousheng Solar Photovoltaic Manufactory Co Ltd Jump to: navigation, search Name: Ningbo Zhousheng Solar Photovoltaic Manufactory Co Ltd Place: Ningbo, Zhejiang Province, China...

  16. Bengbu Sanxin Solar Photovoltaic Glass Co Ltd | Open Energy Informatio...

    Open Energy Info (EERE)

    Bengbu Sanxin Solar Photovoltaic Glass Co Ltd Jump to: navigation, search Name: Bengbu Sanxin Solar Photovoltaic Glass Co Ltd Place: Bengbu, Anhui Province, China Product: Glass...

  17. U.S. Photovoltaic Industry Roadmap | Open Energy Information

    Open Energy Info (EERE)

    Photovoltaic Industry Roadmap Jump to: navigation, search Tool Summary LAUNCH TOOL Name: U.S. Photovoltaic Industry Roadmap AgencyCompany Organization: United States...

  18. Sandia Energy - Sandia Tool Determines Value of Solar Photovoltaic...

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

    Tool Determines Value of Solar Photovoltaic Power Systems Home Renewable Energy Energy Partnership News News & Events Photovoltaic Solar Sandia Tool Determines Value of Solar...

  19. Sandia Energy - Photovoltaic (PV) Regional Test Center (RTC)...

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

    Photovoltaic (PV) Regional Test Center (RTC) Website Goes Live Home Renewable Energy Energy Partnership News SunShot News & Events Photovoltaic Solar National Solar Thermal Test...

  20. Cixi Renhe Photovoltaic Electrical Appliance Co Ltd | Open Energy...

    Open Energy Info (EERE)

    Cixi Renhe Photovoltaic Electrical Appliance Co Ltd Jump to: navigation, search Name: Cixi Renhe Photovoltaic Electrical Appliance Co Ltd Place: Cixi, Zhejiang Province, China Zip:...

  1. Zhejiang Sino Italian Photovoltaic Co Ltd SIPV | Open Energy...

    Open Energy Info (EERE)

    Italian Photovoltaic Co Ltd SIPV Jump to: navigation, search Name: Zhejiang Sino-Italian Photovoltaic Co Ltd (SIPV) Place: Ningbo, Zhejiang Province, China Zip: 315800 Product: A...

  2. Nantong Qiangsheng Photovoltaic Technology Co Ltd QS Solar |...

    Open Energy Info (EERE)

    Qiangsheng Photovoltaic Technology Co Ltd QS Solar Jump to: navigation, search Name: Nantong Qiangsheng Photovoltaic Technology Co Ltd (QS Solar) Place: Shanghai Municipality,...

  3. Changzhou EGing Photovoltaic Technology Co Ltd | Open Energy...

    Open Energy Info (EERE)

    EGing Photovoltaic Technology Co Ltd Jump to: navigation, search Name: Changzhou EGing Photovoltaic Technology Co Ltd Place: Jintan, Jiangsu Province, China Zip: 213213 Product:...

  4. Arima Photovoltaic And Optical Corp Arima PV | Open Energy Information

    Open Energy Info (EERE)

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

  5. Dali Yuanchang Photovoltaic Energy Co Ltd | Open Energy Information

    Open Energy Info (EERE)

    Yuanchang Photovoltaic Energy Co Ltd Jump to: navigation, search Name: Dali Yuanchang Photovoltaic Energy Co Ltd Place: Dali, Yunnan Province, China Product: China-based PV project...

  6. Introduction to Small-Scale Photovoltaic Systems (Including RETScreen...

    Open Energy Info (EERE)

    Photovoltaic Systems (Including RETScreen Case Study) (Webinar) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Introduction to Small-Scale Photovoltaic Systems...

  7. New Tomorrow Photovoltaic Co Ltd | Open Energy Information

    Open Energy Info (EERE)

    Tomorrow Photovoltaic Co Ltd Jump to: navigation, search Name: New Tomorrow Photovoltaic Co Ltd Place: Shenzhen, Guangdong Province, China Zip: 518112 Sector: Solar Product:...

  8. Hebei Qindao Photovoltaic Technology Co Ltd | Open Energy Information

    Open Energy Info (EERE)

    Qindao Photovoltaic Technology Co Ltd Jump to: navigation, search Name: Hebei Qindao Photovoltaic Technology Co Ltd Place: Handan, Hebei Province, China Product: Chinese producer...

  9. Xi an Huanghe Photovoltaic Technology Co Ltd | Open Energy Information

    Open Energy Info (EERE)

    Huanghe Photovoltaic Technology Co Ltd Jump to: navigation, search Name: Xi'an Huanghe Photovoltaic Technology Co Ltd Place: Xi'an, Shaanxi Province, China Sector: Solar Product:...

  10. Jiangsu Jiasheng Photovoltaic Technology Co Ltd aka JS Solar...

    Open Energy Info (EERE)

    Jiasheng Photovoltaic Technology Co Ltd aka JS Solar Ltd Jump to: navigation, search Name: Jiangsu Jiasheng Photovoltaic Technology Co Ltd (aka JS Solar Ltd) Place: Jiangsu...

  11. Zhongke Photovoltaic Material Technology Co Ltd | Open Energy...

    Open Energy Info (EERE)

    Zhongke Photovoltaic Material Technology Co Ltd Jump to: navigation, search Name: Zhongke Photovoltaic Material Technology Co Ltd Place: Pingxiang, Jiangxi Province, China Product:...

  12. Photovoltaic Electrical Contact and Cell Coating Basics | Department...

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

    Electrical Contact and Cell Coating Basics Photovoltaic Electrical Contact and Cell Coating Basics August 19, 2013 - 4:12pm Addthis The outermost layers of photovoltaic (PV) cell, ...

  13. Fundamentals of thermochemical biomass conversion

    SciTech Connect (OSTI)

    Overend, R.P.; Milne, T.A.; Mudge, L.

    1985-01-01

    The contents of this book are: Wood and biomass ultrastructure; Cellulose, hemicellulose and extractives; Lignin; Pretreatment of biomass for thermochemical biomass conversion; A kinetic isotope effect in the thermal dehydration of cellobiose; Gasification and liquefaction of forest products in supercritical water; Thermochemical fractionation and liquefaction of wood; The pyrolysis and gasification of wood in molten hydroxide eutectics; Influence of alkali carbonates on biomass volatilization; Flash pyrolysis of biomass with reactive and non-reactive gases; Pyrolytic reactions and biomass; Product formation in the pyrolysis of large wood particles; The pyrolysis under vacuum of aspen poplar; Simulation of kraft lignin pyrolysis; and Kinetics of wood gasification by carbon dioxide and steam.

  14. Method for pretreating lignocellulosic biomass

    DOE Patents [OSTI]

    Kuzhiyil, Najeeb M.; Brown, Robert C.; Dalluge, Dustin Lee

    2015-08-18

    The present invention relates to a method for pretreating lignocellulosic biomass containing alkali and/or alkaline earth metal (AAEM). The method comprises providing a lignocellulosic biomass containing AAEM; determining the amount of the AAEM present in the lignocellulosic biomass; identifying, based on said determining, the amount of a mineral acid sufficient to completely convert the AAEM in the lignocellulosic biomass to thermally-stable, catalytically-inert salts; and treating the lignocellulosic biomass with the identified amount of the mineral acid, wherein the treated lignocellulosic biomass contains thermally-stable, catalytically inert AAEM salts.

  15. Biofuels - Biomass Feedstock - Energy Innovation Portal

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

    Biomass and Biofuels Biomass and Biofuels Find More Like This Return to Search Biofuels - Biomass Feedstock Idaho National Laboratory Contact INL About This Technology Technology ...

  16. Randolph Electric Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Biomass Facility Jump to: navigation, search Name Randolph Electric Biomass Facility Facility Randolph Electric Sector Biomass Facility Type Landfill Gas Location Norfolk County,...

  17. Berlin Gorham Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Gorham Biomass Facility Jump to: navigation, search Name Berlin Gorham Biomass Facility Facility Berlin Gorham Sector Biomass Location Coos County, New Hampshire Coordinates...

  18. Westchester Landfill Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Landfill Biomass Facility Jump to: navigation, search Name Westchester Landfill Biomass Facility Facility Westchester Landfill Sector Biomass Facility Type Landfill Gas Location...

  19. Shasta 2 Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    2 Biomass Facility Jump to: navigation, search Name Shasta 2 Biomass Facility Facility Shasta 2 Sector Biomass Owner Wheelabrator Location Anderson, California Coordinates...

  20. Biodyne Pontiac Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Pontiac Biomass Facility Jump to: navigation, search Name Biodyne Pontiac Biomass Facility Facility Biodyne Pontiac Sector Biomass Facility Type Non-Fossil Waste Location...

  1. San Marcos Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Marcos Biomass Facility Jump to: navigation, search Name San Marcos Biomass Facility Facility San Marcos Sector Biomass Facility Type Landfill Gas Location San Diego County,...

  2. Hebei Jiantou Biomass Power | Open Energy Information

    Open Energy Info (EERE)

    Jiantou Biomass Power Jump to: navigation, search Name: Hebei Jiantou Biomass Power Place: Jinzhou, Hebei Province, China Zip: 50000 Sector: Biomass Product: A company engages in...

  3. Okeelanta 2 Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    2 Biomass Facility Jump to: navigation, search Name Okeelanta 2 Biomass Facility Facility Okeelanta 2 Sector Biomass Owner Florida Crystals Location South Bay, Florida Coordinates...

  4. Florida Biomass Energy Consortium | Open Energy Information

    Open Energy Info (EERE)

    Consortium Jump to: navigation, search Name: Florida Biomass Energy Consortium Place: Florida Sector: Biomass Product: Association of biomass energy companies. References: Florida...

  5. Sunset Farms Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Farms Biomass Facility Jump to: navigation, search Name Sunset Farms Biomass Facility Facility Sunset Farms Sector Biomass Facility Type Landfill Gas Location Travis County, Texas...

  6. East Bridgewater Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Bridgewater Biomass Facility Jump to: navigation, search Name East Bridgewater Biomass Facility Facility East Bridgewater Sector Biomass Facility Type Landfill Gas Location...

  7. Biodyne Lyons Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Lyons Biomass Facility Jump to: navigation, search Name Biodyne Lyons Biomass Facility Facility Biodyne Lyons Sector Biomass Facility Type Landfill Gas Location Cook County,...

  8. Reliant Conroe Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Conroe Biomass Facility Jump to: navigation, search Name Reliant Conroe Biomass Facility Facility Reliant Conroe Sector Biomass Facility Type Landfill Gas Location Montgomery...

  9. Plummer Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Plummer Biomass Facility Jump to: navigation, search Name Plummer Biomass Facility Facility Plummer Sector Biomass Owner Wood Power Location Plummer, Idaho Coordinates...

  10. Otay Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Otay Biomass Facility Jump to: navigation, search Name Otay Biomass Facility Facility Otay Sector Biomass Facility Type Landfill Gas Location San Diego County, California...

  11. Florida Biomass Energy Group | Open Energy Information

    Open Energy Info (EERE)

    Group Jump to: navigation, search Name: Florida Biomass Energy Group Place: Gulf Breeze, Florida Zip: 32561 Sector: Biomass Product: Florida Biomass Energy Group is a Florida...

  12. SPI Sonora Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Sonora Biomass Facility Jump to: navigation, search Name SPI Sonora Biomass Facility Facility SPI Sonora Sector Biomass Owner Sierra Pacific Industries Location Sonora, California...

  13. Wheelabrator Saugus Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Saugus Biomass Facility Jump to: navigation, search Name Wheelabrator Saugus Biomass Facility Facility Wheelabrator Saugus Sector Biomass Facility Type Municipal Solid Waste...

  14. Biodyne Peoria Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Peoria Biomass Facility Jump to: navigation, search Name Biodyne Peoria Biomass Facility Facility Biodyne Peoria Sector Biomass Facility Type Landfill Gas Location Peoria County,...

  15. Zilkha Biomass Energy LLC | Open Energy Information

    Open Energy Info (EERE)

    Zilkha Biomass Energy LLC Jump to: navigation, search Logo: Zilkha Biomass Energy LLC Name: Zilkha Biomass Energy LLC Address: 1001 McKinney Place: Houston, Texas Zip: 77002...

  16. Mecca Plant Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Plant Biomass Facility Jump to: navigation, search Name Mecca Plant Biomass Facility Facility Mecca Plant Sector Biomass Location Riverside County, California Coordinates...

  17. Biodyne Springfield Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Springfield Biomass Facility Jump to: navigation, search Name Biodyne Springfield Biomass Facility Facility Biodyne Springfield Sector Biomass Facility Type Landfill Gas Location...

  18. Biomass Feedstock Composition and Property Database () | Data...

    Office of Scientific and Technical Information (OSTI)

    Biomass Feedstock Composition and Property Database Title: Biomass Feedstock Composition and Property Database The Office of Energy Efficiency and Renewable Energy's Biomass ...

  19. Kiefer Landfill Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Kiefer Landfill Biomass Facility Jump to: navigation, search Name Kiefer Landfill Biomass Facility Facility Kiefer Landfill Sector Biomass Facility Type Landfill Gas Location...

  20. Biomass Boiler for Food Processing Applications | Department...

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

    Biomass Boiler for Food Processing Applications Biomass Boiler for Food Processing Applications Biomass Boiler Uses a Combination of Wood Waste and Tire-Derived Fuel In 2011, the ...

  1. Biomass Program Factsheet

    SciTech Connect (OSTI)

    2010-03-01

    The emerging U.S. bioindustry is using a range of biomass resources to provide a secure and growing supply of transportation fuels and electric power. Displacing an increasing portion of our imported oil with renewable, domestic bioenergy will provide clear benefits:Reduced greenhouse gas (GHG) emissions; A cleaner, more secure energy future; Sustainable transportation fuels; Opportunities for economic growth

  2. Biomass Scenario Model

    SciTech Connect (OSTI)

    2015-09-01

    The Biomass Scenario Model (BSM) is a unique, carefully validated, state-of-the-art dynamic model of the domestic biofuels supply chain which explicitly focuses on policy issues, their feasibility, and potential side effects. It integrates resource availability, physical/technological/economic constraints, behavior, and policy. The model uses a system dynamics simulation (not optimization) to model dynamic interactions across the supply chain.

  3. Enzymes for improved biomass conversion

    DOE Patents [OSTI]

    Brunecky, Roman; Himmel, Michael E.

    2016-02-02

    Disclosed herein are enzymes and combinations of the enzymes useful for the hydrolysis of cellulose and the conversion of biomass. Methods of degrading cellulose and biomass using enzymes and cocktails of enzymes are also disclosed.

  4. NREL: Learning - Biomass Energy Basics

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

    Biomass Energy Basics Photo of a farmer standing in a field and inspecting corn crops. We have used biomass energy, or "bioenergy"-the energy from plants and plant-derived...

  5. National Center for Photovoltaics at NREL

    ScienceCinema (OSTI)

    VanSant, Kaitlyn; Wilson, Greg; Berry, Joseph; Al-Jassim, Mowafak; Kurtz, Sarah

    2014-06-10

    The National Center for Photovoltaics at the National Renewable Energy Laboratory (NREL) focuses on technology innovations that drive industry growth in U.S. photovoltaic (PV) manufacturing. The NCPV is a central resource for our nation's capabilities in PV research, development, deployment, and outreach.

  6. Photovoltaic Energy Program overview, fiscal year 1997

    SciTech Connect (OSTI)

    1998-02-01

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

  7. National Center for Photovoltaics at NREL

    SciTech Connect (OSTI)

    VanSant, Kaitlyn; Wilson, Greg; Berry, Joseph; Al-Jassim, Mowafak; Kurtz, Sarah

    2013-11-07

    The National Center for Photovoltaics at the National Renewable Energy Laboratory (NREL) focuses on technology innovations that drive industry growth in U.S. photovoltaic (PV) manufacturing. The NCPV is a central resource for our nation's capabilities in PV research, development, deployment, and outreach.

  8. Biomass Basics | Department of Energy

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

    Education & Workforce Development » Resources » Biomass Basics Biomass Basics Biomass is an energy resource derived from organic matter, which includes wood, agricultural waste, and other living-cell material that can be burned to produce heat energy. It also includes algae, sewage, and other organic substances that may be used to make energy through chemical processes. Biomass currently supplies about 3% of total U.S. energy consumption in the form of electricity, process heat, and

  9. Biomass Feedstocks | Department of Energy

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

    Research & Development » Biomass Feedstocks Biomass Feedstocks An alternate text version of this video is available online. A feedstock is defined as any renewable, biological material that can be used directly as a fuel, or converted to another form of fuel or energy product. Biomass feedstocks are the plant and algal materials used to derive fuels like ethanol, butanol, biodiesel, and other hydrocarbon fuels. Examples of biomass feedstocks include corn starch, sugarcane juice, crop

  10. Optimized microsystems-enabled photovoltaics

    DOE Patents [OSTI]

    Cruz-Campa, Jose Luis; Nielson, Gregory N.; Young, Ralph W.; Resnick, Paul J.; Okandan, Murat; Gupta, Vipin P.

    2015-09-22

    Technologies pertaining to designing microsystems-enabled photovoltaic (MEPV) cells are described herein. A first restriction for a first parameter of an MEPV cell is received. Subsequently, a selection of a second parameter of the MEPV cell is received. Values for a plurality of parameters of the MEPV cell are computed such that the MEPV cell is optimized with respect to the second parameter, wherein the values for the plurality of parameters are computed based at least in part upon the restriction for the first parameter.

  11. Photovoltaic Cell And Manufacturing Process

    DOE Patents [OSTI]

    Albright, Scot P.; Chamberlin, Rhodes R.

    1996-11-26

    Provided is a method for controlling electrical properties and morphology of a p-type material of a photovoltaic device. The p-type material, such as p-type cadmium telluride, is first subjected to heat treatment in an oxidizing environment, followed by recrystallization in an environment substantially free of oxidants. In one embodiment, the heat treatment step comprises first subjecting the p-type material to an oxidizing atmosphere at a first temperature to getter impurities, followed by second subjecting the p-type material to an oxidizing atmosphere at a second temperature, higher than the first temperature, to develop a desired oxidation gradient through the p-type material.

  12. Reburn system with feedlot biomass

    DOE Patents [OSTI]

    Annamalai, Kalyan; Sweeten, John M.

    2005-12-13

    The present invention pertains to the use of feedlot biomass as reburn fuel matter to reduce NO.sub.x emissions. According to one embodiment of the invention, feedlot biomass is used as the reburn fuel to reduce NO.sub.x. The invention also includes burners and boiler in which feedlot biomass serves a reburn fuel.

  13. Biomass 2009 Conference Agenda | Department of Energy

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

    09 Conference Agenda Biomass 2009 Conference Agenda Biomass 2009 Conference Agenda bio2009_full_agenda.pdf (323.99 KB) More Documents & Publications Biomass 2010 Conference Agenda Biomass 2011 Conference Agenda ICAM Workshop

  14. Biomass 2010 Conference Agenda | Department of Energy

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

    0 Conference Agenda Biomass 2010 Conference Agenda Biomass 2010 Conference Agenda bio2010_full_agenda.pdf (299 KB) More Documents & Publications Biomass 2009 Conference Agenda Biomass 2011 Conference Agenda QTR Cornerstone Workshop 2014

  15. Eccleshall Biomass Ltd | Open Energy Information

    Open Energy Info (EERE)

    Eccleshall Biomass Ltd Jump to: navigation, search Name: Eccleshall Biomass Ltd Place: Eccleshall, United Kingdom Zip: ST21 6JL Sector: Biomass Product: Developing a 2.2MW biomass...

  16. ESD Biomass Ltd | Open Energy Information

    Open Energy Info (EERE)

    ESD Biomass Ltd Jump to: navigation, search Name: ESD Biomass Ltd Place: Neston, United Kingdom Zip: SN13 9TZ Sector: Biomass Product: Acts as advisor to firms developing biomass...

  17. FY12 Biomass Program Congressional Budget Request

    SciTech Connect (OSTI)

    none,

    2011-02-01

    FY12 budget and funding for the Biomass Program biomass and biorefinery systems research development and deployment.

  18. Metro Wastewater Reclamation District Biomass Facility | Open...

    Open Energy Info (EERE)

    Wastewater Reclamation District Biomass Facility Jump to: navigation, search Name Metro Wastewater Reclamation District Biomass Facility Facility Metro Wastewater Reclamation...

  19. NREL: Biomass Research - Thermochemical Conversion Capabilities

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

    and commercialization of biomass gasification is the integration of the gasifier with downstream syngas processing. ... Biomass Characterization Biochemical Conversion Thermochemical ...

  20. Nanostructured Materials for Improved Photovoltaics

    SciTech Connect (OSTI)

    Morgan, Sarah E.; Cannon, Gordon C.; Heinhorst, Sabine; Rawlins, James W.

    2004-07-18

    This research addresses the fundamental issues of cell morphology and phase dimensions that determine conversion efficiency in polymeric organic photovoltaic devices. The approach will help explain the relationships between morphological control, domain size, and power conversion efficiency in OPV devices, with the goal of providing direction for development of OPV systems with greater efficiency. The program addresses the DOE Office of Energy Efficiency and Renewable Energy goals of providing economically sustainable clean energy technologies to reduce dependence on foreign oil. This research focused on synthesis, fabrication and analysis of both active and protective layers for improved organic and inorganic hybrid PV (PhotoVoltaic) materials. A systematic study of phase size, shape, and distance was conducted to determine the effects of morphology in each process. Four classes of nanostructured materials were studied: 1) functional block copolymers (AB, acceptor-donor blocks) that self-assemble into matched domain sizes 2) synthetic core-shell particles with separate acceptor and donor layers 3) bacterial micro-compartment (BMC) proteins as self-assembling shells for core-shell nanoparticle constructs and 4) polyhedral oligomeric silsesquioxane (POSS) nanostructured chemicals for enhanced efficiency and durability.

  1. EA-341 Photovoltaic Technologies, LLC | Department of Energy

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

    1 Photovoltaic Technologies, LLC EA-341 Photovoltaic Technologies, LLC Order authorizing Photovoltaic Technologies, LLC to export electric energy to Mexico EA- 341 Photovoltaic Technologies, LLC (2.39 MB) More Documents & Publications EA-324 Emera Energy Services Subsidiary No. 4 LLC EA-344 Twin Cities Power-Canada, LLC EA-353 Boralex Ashland

  2. General Services Administration Photovoltaics Project in Sacramento, California

    Office of Energy Efficiency and Renewable Energy (EERE)

    Document describes a request for proposal issued for the General Services Administration photovoltaic (PV) project.

  3. Clean fractionation of biomass

    SciTech Connect (OSTI)

    Not Available

    1995-01-01

    The US Department of Energy (DOE) Alternative Feedstocks (AF) program is forging new links between the agricultural community and the chemicals industry through support of research and development (R & D) that uses `green` feedstocks to produce chemicals. The program promotes cost-effective industrial use of renewable biomass as feedstocks to manufacture high-volume chemical building blocks. Industrial commercialization of such processes would stimulate the agricultural sector by increasing the demand of agricultural and forestry commodities. New alternatives for American industry may lie in the nation`s forests and fields. The AF program is conducting ongoing research on a clean fractionation process. This project is designed to convert biomass into materials that can be used for chemical processes and products. Clean fractionation separates a single feedstock into individual components cellulose, hemicellulose, and lignin.

  4. Biomass 2012 Agenda | Department of Energy

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

    2 Agenda Biomass 2012 Agenda Detailed agenda from the July 10-11, 2012, Biomass conference--Biomass 2012: Confronting Challenges, Creating Opportunities - Sustaining a Commitment to Bioenergy. bio2012_final_agenda.pdf (340.96 KB) More Documents & Publications Biomass 2013 Agenda Biomass 2011 Conference Agenda Biomass 2010

  5. Biomass 2013 Agenda | Department of Energy

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

    3 Agenda Biomass 2013 Agenda This agenda outlines the sessions and events for Biomass 2013 in Washington, D.C., July 31-August 1. biomass_2013_agenda.pdf (322.3 KB) More Documents & Publications Biomass 2010 Conference Agenda Biomass 2012 Agenda Biomass 2009

  6. DOE 2014 Biomass Conference

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

    2014 Biomass Conference Jim Williams Senior Manager American Petroleum Institute July 29, 2014 DRAFT 7/28/14 Let's Agree with the Chicken Developing & Implementing Fuels & Vehicle Standards * Let Free Markets Work - Mandates and subsidies distort the free market - Must meet consumers' needs - Follow automobile company recommendations as found in owner's manuals - Changes must be compatible with transportation fuel infrastructure * Use Sound Science - Adopt a systems approach, addressing

  7. Hydrolysis of biomass material

    DOE Patents [OSTI]

    Schmidt, Andrew J.; Orth, Rick J.; Franz, James A.; Alnajjar, Mikhail

    2004-02-17

    A method for selective hydrolysis of the hemicellulose component of a biomass material. The selective hydrolysis produces water-soluble small molecules, particularly monosaccharides. One embodiment includes solubilizing at least a portion of the hemicellulose and subsequently hydrolyzing the solubilized hemicellulose to produce at least one monosaccharide. A second embodiment includes solubilizing at least a portion of the hemicellulose and subsequently enzymatically hydrolyzing the solubilized hemicellulose to produce at least one monosaccharide. A third embodiment includes solubilizing at least a portion of the hemicellulose by heating the biomass material to greater than 110.degree. C. resulting in an aqueous portion that includes the solubilized hemicellulose and a water insoluble solids portion and subsequently separating the aqueous portion from the water insoluble solids portion. A fourth embodiment is a method for making a composition that includes cellulose, at least one protein and less than about 30 weight % hemicellulose, the method including solubilizing at least a portion of hemicellulose present in a biomass material that also includes cellulose and at least one protein and subsequently separating the solubilized hemicellulose from the cellulose and at least one protein.

  8. Next Generation Photovoltaics Round 2 | Department of Energy

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

    Photovoltaics » Next Generation Photovoltaics Round 2 Next Generation Photovoltaics Round 2 Twenty-three solar projects are investigating transformational photovoltaic (PV) technologies with the potential to meet SunShot cost targets. The projects' goals are to: Increase efficiency Reduce costs Improve reliability Create more secure and sustainable supply chains. On Sept. 1, 2011, the U.S. Department of Energy (DOE) announced $24.5 million to fund the Next Generation Photovoltaics II projects

  9. Photovoltaic

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

    Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas ...

  10. Photovoltaics

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

    Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas ...

  11. Photovoltaic

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

    Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water ...

  12. Photovoltaic

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

    3 - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy Nuclear

  13. Request for Information on Photovoltaic Module Recycling

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy SunShot Initiative requests feedback from industry, academia, research laboratories, government agencies, and other stakeholders on issues related to photovoltaic (PV) module recycling technology. SunShot intends to understand the current state of recycling technology and the areas of research that could lead to impactful recycling technologies to support the developing PV industry. The intent of this request for information is to generate discussion related to planning for the end of life of photovoltaic modules and to create a list of high impact research topics in photovoltaics recycling.

  14. Direct Thin Film Path to Low Cost, Large Area III-V Photovoltaics...

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

    Solar Photovoltaic Solar Photovoltaic Advanced Materials Advanced Materials Find More Like This Return to Search Direct Thin Film Path to Low Cost, Large Area III-V Photovoltaics ...

  15. List of Photovoltaics Incentives | Open Energy Information

    Open Energy Info (EERE)

    Standard West Virginia Investor-Owned Utility Retail Supplier Anaerobic Digestion Biodiesel Biomass CHPCogeneration Fuel Cells Geothermal Electric Hydroelectric energy...

  16. Photovoltaic module and module arrays

    DOE Patents [OSTI]

    Botkin, Jonathan; Graves, Simon; Lenox, Carl J. S.; Culligan, Matthew; Danning, Matt

    2012-07-17

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

  17. Photovoltaic module and module arrays

    DOE Patents [OSTI]

    Botkin, Jonathan; Graves, Simon; Lenox, Carl J. S.; Culligan, Matthew; Danning, Matt

    2013-08-27

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

  18. GreyStone Power- Photovoltaic Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

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

  19. PROJECT PROFILE: Enabling High Concentration Photovoltaics with...

    Energy Savers [EERE]

    The efficiency and concentration of III-V multi-junction solar cells are essential to reduce the cost of high concentration photovoltaic systems (HCPV). This project will push the ...

  20. NREL: Photovoltaics Research - Matthew O. Reese

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

    A. Urbina, G. Yaman-Uzunoglu, J-B Bonekamp, A.J.J.M. van Breemen and F.C Krebs, "Consensus stability testing protocols for organic photovoltaic materials and devices" Sol. ...

  1. High-performance Si microwire photovoltaics

    SciTech Connect (OSTI)

    Kelzenberg, Michael D.; Turner-Evans, Daniel B.; Putnam, Morgan C.; Boettcher, Shannon W.; Briggs, Ryan M.; Baek, Jae Y.; Lewis, Nathan S.; Atwater, Harry A.

    2011-01-07

    Crystalline Si wires, grown by the vaporliquidsolid (VLS) process, have emerged as promising candidate materials for low-cost, thin-film photovoltaics. Here, we demonstrate VLS-grown Si microwires that have suitable electrical properties for high-performance photovoltaic applications, including long minority-carrier diffusion lengths (Ln>> 30 m) and low surface recombination velocities (S << 70 cms-1). Single-wire radial pn junction solar cells were fabricated with amorphous silicon and silicon nitride surface coatings, achieving up to 9.0% apparent photovoltaic efficiency, and exhibiting up to ~600 mV open-circuit voltage with over 80% fill factor. Projective single-wire measurements and optoelectronic simulations suggest that large-area Si wire-array solar cells have the potential to exceed 17% energy-conversion efficiency, offering a promising route toward cost-effective crystalline Si photovoltaics.

  2. Photovoltaic System on South Table Mountain

    Office of Energy Efficiency and Renewable Energy (EERE)

    This photograph features a photovoltaic array that is housed at the mesa top behind the National Renewable Energy Laboratory (NREL). The project was financed through a power purchase agreement (PPA...

  3. Photovoltaic Shade Structure at Denver Courthouse

    Office of Energy Efficiency and Renewable Energy (EERE)

    This photograph features the photovoltaic (PV) shade structure on the top floor of the Alfred A. Arraj U.S. Courthouse that is the partial light-transmitting building-integrated PV panels,...

  4. Central Georgia EMC- Photovoltaic Rebate Program

    Broader source: Energy.gov [DOE]

    In June 2008, Central Georgia Electric Membership Corporation (CGEMC) began offering a rebate of $450 per kilowatt (kW) to residential members who install photovoltaic (PV) systems that are...

  5. Hudson Light & Power- Photovoltaic Incentive Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Hudson Light & Power Department, the municipal utility for the Town of Hudson, offers a limited number of solar photovoltaic (PV) rebates for residential, commercial, industrial, and municipal...

  6. Photovoltaic System on Orange County Convention Center

    Broader source: Energy.gov [DOE]

    The solar photovoltaic (PV) rooftop system on the Orange County Convention Center in Orlando, Florida, was completed in 2009 over the south concourse. This project is a U.S. Department of Energy...

  7. Photovoltaic Online Training Course for Code Officials

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Photovoltaic Online Training Course for Code Officials is a free online training tool for those officials who conduct reviews and inspections of residential PV systems. Throughout the course's...

  8. Microsystem enabled photovoltaic modules and systems (Patent...

    Office of Scientific and Technical Information (OSTI)

    The absorber layer includes an array of photovoltaic (PV) elements. The fixed optic layer ... the translatable optic layer into one of the PV elements such that it is quasi-collimated. ...

  9. Poudre Valley REA- Photovoltaic Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Poudre Valley REA (PVREA) is providing rebates to their residential customers who install photovoltaic (PV) systems on their homes. The consumer agrees to assign all Renewable Energy Credits (RECs)...

  10. Time-Resolved Photoluminescence and Photovoltaics

    SciTech Connect (OSTI)

    Metzger, W. K.; Ahrenkiel, R. K.; Dippo, P.; Geisz, J.; Wanlass, M. W.; Kurtz, S.

    2005-01-01

    The time-resolved photoluminescence (TRPL) technique and its ability to characterize recombination in bulk photovoltaic semiconductor materials are reviewed. Results from a variety of materials and a few recent studies are summarized and compared.

  11. Photovoltaic Cell Conversion Efficiency Basics | Department of...

    Energy Savers [EERE]

    August 20, 2013 - 2:58pm Addthis The conversion efficiency of a photovoltaic (PV) cell, or solar cell, is the percentage of the solar energy shining on a PV device that is ...

  12. Biomass process handbook

    SciTech Connect (OSTI)

    Not Available

    1983-01-01

    Descriptions are given of 42 processes which use biomass to produce chemical products. Marketing and economic background, process description, flow sheets, costs, major equipment, and availability of technology are given for each of the 42 processes. Some of the chemicals discussed are: ethanol, ethylene, acetaldehyde, butanol, butadiene, acetone, citric acid, gluconates, itaconic acid, lactic acid, xanthan gum, sorbitol, starch polymers, fatty acids, fatty alcohols, glycerol, soap, azelaic acid, perlargonic acid, nylon-11, jojoba oil, furfural, furfural alcohol, tetrahydrofuran, cellulose polymers, products from pulping wastes, and methane. Processes include acid hydrolysis, enzymatic hydrolysis, fermentation, distillation, Purox process, and anaerobic digestion.

  13. Hydrothermal Liquefaction of Biomass

    SciTech Connect (OSTI)

    Elliott, Douglas C.

    2010-12-10

    Hydrothermal liquefaction technology is describes in its relationship to fast pyrolysis of biomass. The scope of work at PNNL is discussed and some intial results are presented. HydroThermal Liquefaction (HTL), called high-pressure liquefaction in earlier years, is an alternative process for conversion of biomass into liquid products. Some experts consider it to be pyrolysis in solvent phase. It is typically performed at about 350 C and 200 atm pressure such that the water carrier for biomass slurry is maintained in a liquid phase, i.e. below super-critical conditions. In some applications catalysts and/or reducing gases have been added to the system with the expectation of producing higher yields of higher quality products. Slurry agents ('carriers') evaluated have included water, various hydrocarbon oils and recycled bio-oil. High-pressure pumping of biomass slurry has been a major limitation in the process development. Process research in this field faded away in the 1990s except for the HydroThermal Upgrading (HTU) effort in the Netherlands, but has new resurgence with other renewable fuels in light of the increased oil prices and climate change concerns. Research restarted at Pacific Northwest National Laboratory (PNNL) in 2007 with a project, 'HydroThermal Liquefaction of Agricultural and Biorefinery Residues' with partners Archer-Daniels-Midland Company and ConocoPhillips. Through bench-scale experimentation in a continuous-flow system this project investigated the bio-oil yield and quality that could be achieved from a range of biomass feedstocks and derivatives. The project was completed earlier this year with the issuance of the final report. HydroThermal Liquefaction research continues within the National Advanced Biofuels Consortium with the effort focused at PNNL. The bench-scale reactor is being used for conversion of lignocellulosic biomass including pine forest residue and corn stover. A complementary project is an international collaboration with

  14. Organic Photovoltaics Experiments Showcase 'Superfacility' Concept

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

    Organic Photovoltaics Experiments Showcase 'Superfacility' Concept Organic Photovoltaics Experiments Showcase 'Superfacility' Concept Collaboration Key to Enabling On-The-Fly HPC Data Analysis at Multiple Sites March 17, 2015 Contact: Kathy Kincade, +1 510 495 2124, kkincade@lbl.gov A collaborative effort linking the Advanced Light Source (ALS) at Lawrence Berkeley National Laboratory (Berkeley Lab) with supercomputing resources at the National Energy Research Scientific Computing Center (NERSC)

  15. Request for Information: Photovoltaic Research and Development

    Office of Energy Efficiency and Renewable Energy (EERE)

    Manufacturing costs associated with photovoltaic module production have decreased dramatically over the past decade, but further improvements are still needed. Cell and module developments that maximize efficiency, service lifetime, and total energy output while minimizing installation material and labor costs are critical to the future of commercial photovoltaic technologies. Continued innovation in these areas will play a vital role in achieving a levelized cost of energy that is low enough to drive widespread deployment for decades to come.

  16. Photovoltaic concentrator assembly with optically active cover

    DOE Patents [OSTI]

    Plesniak, Adam P

    2014-01-21

    A photovoltaic concentrator assembly that includes a housing that defines an internal volume and includes a rim, wherein the rim defines an opening into the internal volume, a photovoltaic cell positioned in the internal volume, and an optical element that includes an optically active body and a flange extending outward from the body, wherein the flange is sealingly engaged with the rim of the housing to enclose the internal volume.

  17. University Crystalline Silicon Photovoltaics Research and Development

    SciTech Connect (OSTI)

    Ajeet Rohatgi; Vijay Yelundur; Abasifreke Ebong; Dong Seop Kim

    2008-08-18

    The overall goal of the program is to advance the current state of crystalline silicon solar cell technology to make photovoltaics more competitive with conventional energy sources. This program emphasizes fundamental and applied research that results in low-cost, high-efficiency cells on commercial silicon substrates with strong involvement of the PV industry, and support a very strong photovoltaics education program in the US based on classroom education and hands-on training in the laboratory.

  18. Improved Organic Photovoltaics - Energy Innovation Portal

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

    Organic Photovoltaics B4 Materials For Organic Semiconductor Applications, Including Molecular Electronics And Organic Photovoltaics University of Colorado Contact CU About This Technology Publications: PDF Document Publication CU2768B (Organic PV) Marketing Summary_1.pdf (146 KB) Technology Marketing Summary Traditionally, photosensitive optoelectronic devices such as solar cells have been constructed of a number of inorganic semiconductors. Purity and crystalline grain size are a large

  19. Cost Competitive Electricity from Photovoltaic Concentrators Called

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

    'Imminent' - News Releases | NREL Cost Competitive Electricity from Photovoltaic Concentrators Called 'Imminent' July 13, 2005 Golden, Colo. - Solar concentrators using highly efficient photovoltaic solar cells will reduce the cost of electricity from sunlight to competitive levels soon, attendees were told at a recent international conference on the subject. Herb Hayden of Arizona Public Service (APS) and Robert McConnell and Martha Symko-Davies of the U.S. Department of Energy's National

  20. International Biomass Conference and Expo

    Broader source: Energy.gov [DOE]

    The International Biomass Conference and Expo will be held April 11–14, 2016, in Charlotte, North Carolina, and will gather bioeconomy experts across the supply chain. Bioenergy Technologies Office Technology Manager Elliott Levine will be moderating a panel titled, “The Near-Term Opportunity for Biomass as a Low-Carbon Coal Supplement or Replacement.” The panel will focus on the technological challenges and opportunities in the potential for biomass to replace coal.

  1. NREL Photovoltaic Program FY 1996 Annual Report

    SciTech Connect (OSTI)

    Not Available

    1997-08-01

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

  2. US Photovoltaic Patents, 1988--1990

    SciTech Connect (OSTI)

    Not Available

    1991-12-01

    This document contains US patents on terrestrial photovoltaic (PV) power applications, including systems, components, and materials, as well as manufacturing and support functions. The patent entries in this document were issued from 1988 through 1990. The entries were located by searching USPA, the data base of the US Patent Office. The final search retrieved all patents under the class ``Batteries, Thermoelectric and Photoelectric`` and the subclasses ``Photoelectric,`` ``Testing,`` and ``Applications.`` The search also located patents that contained the words ``photovoltaic(s)`` or ``solar cell(s)`` and their derivatives. A manual search of the patents in the Solar Energy Research Institute (SERI) patent file augmented the data base search. After the initial list was compiled, most of the patents on the following subjects were excluded: space photovoltaic technology, use of the photovoltaic effect for detectors and subjects only peripherally concerned with photovoltaics. Some patents on these three subjects were included when it appeared that those inventions might be of use in terrestrial PV power technologies.

  3. US Photovoltaic Patents, 1988--1990

    SciTech Connect (OSTI)

    Not Available

    1991-12-01

    This document contains US patents on terrestrial photovoltaic (PV) power applications, including systems, components, and materials, as well as manufacturing and support functions. The patent entries in this document were issued from 1988 through 1990. The entries were located by searching USPA, the data base of the US Patent Office. The final search retrieved all patents under the class Batteries, Thermoelectric and Photoelectric'' and the subclasses Photoelectric,'' Testing,'' and Applications.'' The search also located patents that contained the words photovoltaic(s)'' or solar cell(s)'' and their derivatives. A manual search of the patents in the Solar Energy Research Institute (SERI) patent file augmented the data base search. After the initial list was compiled, most of the patents on the following subjects were excluded: space photovoltaic technology, use of the photovoltaic effect for detectors and subjects only peripherally concerned with photovoltaics. Some patents on these three subjects were included when it appeared that those inventions might be of use in terrestrial PV power technologies.

  4. Biomass Rapid Analysis Network (BRAN)

    SciTech Connect (OSTI)

    Not Available

    2003-10-01

    Helping the emerging biotechnology industry develop new tools and methods for real-time analysis of biomass feedstocks, process intermediates and The Biomass Rapid Analysis Network is designed to fast track the development of modern tools and methods for biomass analysis to accelerate the development of the emerging industry. The network will be led by industry and organized and coordinated through the National Renewable Energy Lab. The network will provide training and other activities of interest to BRAN members. BRAN members will share the cost and work of rapid analysis method development, validate the new methods, and work together to develop the training for the future biomass conversion workforce.

  5. Biomass Burning Observation Project Specifically,

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

    Pacific Northwest region and in the vicinity of Memphis, Tennessee, as part of the Biomass Burning Observation Project (BBOP). The aircraft will fly through smoke plumes from...

  6. Clean fractionation of biomass

    SciTech Connect (OSTI)

    1995-09-01

    The US DOE Alternative Feedstocks (AF) program is forging new links between the agricultural community and the chemicals industry through support of research and development (R&D) that uses green feedstocks to produce chemicals. The program promotes cost-effective industrial use of renewable biomass as feedstocks to manufacture high-volume chemical building blocks. Industrial commercialization of such processes would stimulate the agricultural sector by increasing the demand of agricultural and forestry commodities. A consortium of five DOE national laboratories has been formed with the objectives of providing industry with a broad range of expertise and helping to lower the risk of new process development through federal cost sharing. The AF program is conducting ongoing research on a clean fractionation process, designed to convert biomass into materials that can be used for chemical processes and products. The focus of the clean fractionation research is to demonstrate to industry that one technology can successfully separate all types of feedstocks into predictable types of chemical intermediates.

  7. System and process for biomass treatment

    DOE Patents [OSTI]

    Dunson, Jr., James B; Tucker, III, Melvin P; Elander, Richard T; Lyons, Robert C

    2013-08-20

    A system including an apparatus is presented for treatment of biomass that allows successful biomass treatment at a high solids dry weight of biomass in the biomass mixture. The design of the system provides extensive distribution of a reactant by spreading the reactant over the biomass as the reactant is introduced through an injection lance, while the biomass is rotated using baffles. The apparatus system to provide extensive assimilation of the reactant into biomass using baffles to lift and drop the biomass, as well as attrition media which fall onto the biomass, to enhance the treatment process.

  8. Biomass Webinar Text Version | Department of Energy

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

    Text Version Biomass Webinar Text Version Dowload the text version of the audio from the DOE Office of Indian Energy webinar on biomass. DOE Office of Indian Energy Foundational Course Webinar on Biomass: Text Version (153.94 KB) More Documents & Publications Biomass Webinar Presentation Slides Assessing Energy Resources Webinar Text Version Transcript: Biomass Clean Cities Webinar - Workforce Development

  9. Photovoltaics Program: utility interface southwest regional workshop proceedings

    SciTech Connect (OSTI)

    1981-04-01

    This was the first of a series of regional workshops that will focus on the photovoltaic and utility interface, and the use of photovoltaics as a cogeneration option by utilities. The needs and constraints of the utilities are defined and an understanding is established of the capabilities and limitations of photovoltaic systems as an alternative electricity generation option by utilities. Utilities' viewpoints regarding large-scale central systems and small-scale, interconnected, distributed systems are given. The Public Utility Regulatory Policies Act and other economic, legislative, and regulatory factors affecting photovoltaic systems are discussed. Current status of photovoltaic systems with respect to the Department of Energy Photovoltaic Program is given. (LEW)

  10. Process for concentrated biomass saccharification

    DOE Patents [OSTI]

    Hennessey, Susan M.; Seapan, Mayis; Elander, Richard T.; Tucker, Melvin P.

    2010-10-05

    Processes for saccharification of pretreated biomass to obtain high concentrations of fermentable sugars are provided. Specifically, a process was developed that uses a fed batch approach with particle size reduction to provide a high dry weight of biomass content enzymatic saccharification reaction, which produces a high sugars concentration hydrolysate, using a low cost reactor system.

  11. Mobile Biomass Pelletizing System

    SciTech Connect (OSTI)

    Thomas Mason

    2009-04-16

    This grant project examines multiple aspects of the pelletizing process to determine the feasibility of pelletizing biomass using a mobile form factor system. These aspects are: the automatic adjustment of the die height in a rotary-style pellet mill, the construction of the die head to allow the use of ceramic materials for extreme wear, integrating a heat exchanger network into the entire process from drying to cooling, the use of superheated steam for adjusting the moisture content to optimum, the economics of using diesel power to operate the system; a break-even analysis of estimated fixed operating costs vs. tons per hour capacity. Initial development work has created a viable mechanical model. The overall analysis of this model suggests that pelletizing can be economically done using a mobile platform.

  12. Interdigitated photovoltaic power conversion device

    DOE Patents [OSTI]

    Ward, James Scott (Englewood, CO); Wanlass, Mark Woodbury (Golden, CO); Gessert, Timothy Arthur (Conifer, CO)

    1999-01-01

    A photovoltaic power conversion device has a top surface adapted to receive impinging radiation. The device includes at least two adjacent, serially connected cells. Each cell includes a semi-insulating substrate and a lateral conductivity layer of a first doped electrical conductivity disposed on the substrate. A base layer is disposed on the lateral conductivity layer and has the same electrical charge conductivity thereof. An emitter layer of a second doped electrical conductivity of opposite electrical charge is disposed on the base layer and forms a p-n junction therebetween. A plurality of spaced channels are formed in the emitter and base layers to expose the lateral conductivity layer at the bottoms thereof. A front contact grid is positioned on the top surface of the emitter layer of each cell. A first current collector is positioned along one outside edge of at least one first cell. A back contact grid is positioned in the channels at the top surface of the device for engagement with the lateral conductivity layer. A second current collector is positioned along at least one outside edge of at least one oppositely disposed second cell. Finally, an interdigitation mechanism is provided for serially connecting the front contact grid of one cell to the back contact grid of an adjacent cell at the top surface of the device.

  13. Photovoltaic concentrator module improvements study

    SciTech Connect (OSTI)

    Levy, S.L.; Kerschen, K.A. ); Hutchison, G. ); Nowlan, M.J. )

    1991-08-01

    This report presents results of a project to design and fabricate an improved photovoltaic concentrator module. Using previous work as a baseline, this study conducted analyses and testing to select major module components and design features. The lens parquet and concentrator solar cell were selected from the highest performing, available components. A single 185X point-focus module was fabricated by the project team and tested at Sandia. Major module characteristics include a 6 by 4 compression-molded acrylic lens parquet (0.737 m{sup 2} area), twenty-four 0.2 ohms-cm, FZ, p-Si solar cells (1.56 cm{sup 2} area) soldered to ceramic substrates and copper heat spreaders, and an aluminized steel housing with corrugated bottom. This project marked the first attempt to use prismatic covers on solar cells in a high-concentration, point-focus application. Cells with 15 percent metallization were obtained, but problems with the fabrication and placement of prismatic covers on these cells lead to the decision not to use covers in the prototype module. Cell assembly fabrication, module fabrication, and module optical design activities are presented here. Test results are also presented for bare cells, cell assemblies, and module. At operating conditions of 981 watts/m{sup 2} DNI and an estimated cell temperature of 65{degrees}C, the module demonstrated an efficiency of 13.9 percent prior to stressed environmental exposure. 12 refs., 56 figs., 7 tabs.

  14. Interdigitated photovoltaic power conversion device

    DOE Patents [OSTI]

    Ward, J.S.; Wanlass, M.W.; Gessert, T.A.

    1999-04-27

    A photovoltaic power conversion device has a top surface adapted to receive impinging radiation. The device includes at least two adjacent, serially connected cells. Each cell includes a semi-insulating substrate and a lateral conductivity layer of a first doped electrical conductivity disposed on the substrate. A base layer is disposed on the lateral conductivity layer and has the same electrical charge conductivity thereof. An emitter layer of a second doped electrical conductivity of opposite electrical charge is disposed on the base layer and forms a p-n junction therebetween. A plurality of spaced channels are formed in the emitter and base layers to expose the lateral conductivity layer at the bottoms thereof. A front contact grid is positioned on the top surface of the emitter layer of each cell. A first current collector is positioned along one outside edge of at least one first cell. A back contact grid is positioned in the channels at the top surface of the device for engagement with the lateral conductivity layer. A second current collector is positioned along at least one outside edge of at least one oppositely disposed second cell. Finally, an interdigitation mechanism is provided for serially connecting the front contact grid of one cell to the back contact grid of an adjacent cell at the top surface of the device. 15 figs.

  15. Apparatus for making photovoltaic devices

    DOE Patents [OSTI]

    Foote, James B. (Toledo, OH); Kaake, Steven A. F. (Perrysburg, OH); Meyers, Peter V. (Bowling Green, OH); Nolan, James F. (Sylvania, OH)

    1994-12-13

    A process and apparatus (70) for making a large area photovoltaic device (22) that is capable of generating low cost electrical power. The apparatus (70) for performing the process includes an enclosure (126) providing a controlled environment in which an oven (156) is located. At least one and preferably a plurality of deposition stations (74,76,78) provide heated vapors of semiconductor material within the oven (156) for continuous elevated temperature deposition of semiconductor material on a sheet substrate (24) including a glass sheet (26) conveyed within the oven. The sheet substrate (24) is conveyed on a roller conveyor (184) within the oven (156) and the semiconductor material whose main layer (82) is cadmium telluride is deposited on an upwardly facing surface (28) of the substrate by each deposition station from a location within the oven above the roller conveyor. A cooling station (86) rapidly cools the substrate (24) after deposition of the semiconductor material thereon to strengthen the glass sheet of the substrate.

  16. Planar photovoltaic solar concentrator module

    DOE Patents [OSTI]

    Chiang, C.J.

    1992-12-01

    A planar photovoltaic concentrator module for producing an electrical signal from incident solar radiation includes an electrically insulating housing having a front wall, an opposing back wall and a hollow interior. A solar cell having electrical terminals is positioned within the interior of the housing. A planar conductor is connected with a terminal of the solar cell of the same polarity. A lens forming the front wall of the housing is operable to direct solar radiation incident to the lens into the interior of the housing. A refractive optical element in contact with the solar cell and facing the lens receives the solar radiation directed into the interior of the housing by the lens and directs the solar radiation to the solar cell to cause the solar cell to generate an electrical signal. An electrically conductive planar member is positioned in the housing to rest on the housing back wall in supporting relation with the solar cell terminal of opposite polarity. The planar member is operable to dissipate heat radiated by the solar cell as the solar cell generates an electrical signal and further forms a solar cell conductor connected with the solar cell terminal to permit the electrical signal generated by the solar cell to be measured between the planar member and the conductor. 5 figs.

  17. Planar photovoltaic solar concentrator module

    DOE Patents [OSTI]

    Chiang, Clement J.

    1992-01-01

    A planar photovoltaic concentrator module for producing an electrical signal from incident solar radiation includes an electrically insulating housing having a front wall, an opposing back wall and a hollow interior. A solar cell having electrical terminals is positioned within the interior of the housing. A planar conductor is connected with a terminal of the solar cell of the same polarity. A lens forming the front wall of the housing is operable to direct solar radiation incident to the lens into the interior of the housing. A refractive optical element in contact with the solar cell and facing the lens receives the solar radiation directed into the interior of the housing by the lens and directs the solar radiation to the solar cell to cause the solar cell to generate an electrical signal. An electrically conductive planar member is positioned in the housing to rest on the housing back wall in supporting relation with the solar cell terminal of opposite polarity. The planar member is operable to dissipate heat radiated by the solar cell as the solar cell generates an electrical signal and further forms a solar cell conductor connected with the solar cell terminal to permit the electrical signal generated by the solar cell to be measured between the planar member and the conductor.

  18. Quantum well multijunction photovoltaic cell

    DOE Patents [OSTI]

    Chaffin, R.J.; Osbourn, G.C.

    1983-07-08

    A monolithic, quantum well, multilayer photovoltaic cell comprises a p-n junction comprising a p-region on one side and an n-region on the other side, each of which regions comprises a series of at least three semiconductor layers, all p-type in the p-region and all n-type in the n-region; each of said series of layers comprising alternating barrier and quantum well layers, each barrier layer comprising a semiconductor material having a first bandgap and each quantum well layer comprising a semiconductor material having a second bandgap when in bulk thickness which is narrower than said first bandgap, the barrier layers sandwiching each quantum well layer and each quantum well layer being sufficiently thin that the width of its bandgap is between said first and second bandgaps, such that radiation incident on said cell and above an energy determined by the bandgap of the quantum well layers will be absorbed and will produce an electrical potential across said junction.

  19. Quantum well multijunction photovoltaic cell

    DOE Patents [OSTI]

    Chaffin, Roger J.; Osbourn, Gordon C.

    1987-01-01

    A monolithic, quantum well, multilayer photovoltaic cell comprises a p-n junction comprising a p-region on one side and an n-region on the other side, each of which regions comprises a series of at least three semiconductor layers, all p-type in the p-region and all n-type in the n-region; each of said series of layers comprising alternating barrier and quantum well layers, each barrier layer comprising a semiconductor material having a first bandgap and each quantum well layer comprising a semiconductor material having a second bandgap when in bulk thickness which is narrower than said first bandgap, the barrier layers sandwiching each quantum well layer and each quantum well layer being sufficiently thin that the width of its bandgap is between said first and second bandgaps, such that radiation incident on said cell and above an energy determined by the bandgap of the quantum well layers will be absorbed and will produce an electrical potential across said junction.

  20. Catalytic Hydrothermal Gasification of Biomass

    SciTech Connect (OSTI)

    Elliott, Douglas C.

    2008-05-06

    A recent development in biomass gasification is the use of a pressurized water processing environment in order that drying of the biomass can be avoided. This paper reviews the research undertaken developing this new option for biomass gasification. This review does not cover wet oxidation or near-atmospheric-pressure steam-gasification of biomass. Laboratory research on hydrothermal gasification of biomass focusing on the use of catalysts is reviewed here, and a companion review focuses on non-catalytic processing. Research includes liquid-phase, sub-critical processing as well as super-critical water processing. The use of heterogeneous catalysts in such a system allows effective operation at lower temperatures, and the issues around the use of catalysts are presented. This review attempts to show the potential of this new processing concept by comparing the various options under development and the results of the research.