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FY 2004 ANNUAL REPORT DOE Solar

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FY 2004 ANNUAL REPORT DOE Solar ( fy-2004-annual-report-doe-solar )

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Technology Development The Department of Energy, in cooperation with the U.S. photovoltaics industry, seeks to advance PV performance and systems engineering, improve systems reliability, and develop technology suitable for integration into residential and commercial building structures. Systems and reliability research focuses on the critical need to improve reliability of the entire PV system, including balance-of-system components such as DC-to-AC current inverters and battery charge controllers. Technology Development also includes building-integrated photovoltaics (BIPV), a rapidly growing solar application in which PV modules serve the dual purpose of replacing conventional building materials and generating electricity. By offering more than one functionality, BIPV systems will help cross the profit threshold essential to significant growth in distributed, grid-connected electricity markets. The Technology Development activity involves five activities: systems engineering and reliability; domestic and international market development, BIPV R&D; outreach and analysis, and the Million Solar Roofs Initiative. Outreach and analysis activities are necessary for a national R&D program to remain viable in a rapidly changing energy sector. FY 2004 accomplishments within this arena follow. PV Systems Engineering • Achieved the final approval, after several years of development, of the IEEE Standard 1526 for stand-alone PV system performance testing. PV System Evaluation and Optimization • Provided technical assistance to the U.S. Department of Agriculture (USDA), which led to including accepted PV systems on the Rural Utilities Service List of Materials; USDA is the first federal agency to offer direct financing to the 1000+ rural coops that purchase PV from the list. Inverter and BOS Development • Phase II contracts with three major resulted in utility-interactive inverters with minimums of 10 years or more mean time before failure. Domestic PV Applications • Provided technical support to U.S. Environmental Protection Agency’s Supplemental Environmental Projects. Building-Integrated PV • Continued the implementation of the 2005 Solar Decathlon university competition, releasing the final regulations, solidifying sponsors, and supporting teams. Million Solar Roofs • Initiated series of state-specific economic analysis briefs, targeted at solar industry distributors and retailers, for their use in marketing their products. International Solar Technologies • Helped open markets for U.S. renewable energy companies. A dozen U.S. concerns participated in a China trade mission, resulting in at least six business partnerships. PV Systems Analysis • Completed a beta model that offers the user the ability to conduct parametric studies on performance, costs, and financing for a 2.4-kW grid-tied residential PV system. Regional Experiment Stations • Performed 20 technical site evaluations for implementation of solar and wind energy projects in rural Brazil.

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