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Performing Organizations: Key Technical Contacts: DOE HQ Technology Manager: FY 2005 Budgets: PV Systems Engineering National Renewable Energy Laboratory (NREL) Sandia National Laboratories (SNL) DOE Golden Field Office (DOE/GO) Carol Riordan (NREL, Primary Contact), 303-384-6780, carol_riordan@nrel.gov Ward Bower (SNL), 505-844-5206, wibower@sandia.gov Glenn Doyle (DOE/GO), 303-275-4706, glenn.doyle@go.doe.gov Dan Ton, 202-586-4618, dan.ton@ee.doe.gov $1,375K (NREL), $122K (SNL), $160K (DOE/GO) ____________________________________________________________________________________ Objectives • Determine, characterize, and document the near- and long-term performance and reliability of candidate, emerging PV technologies in the context of a small, grid-connected system. Provide benchmark-type data and analyses, in a continuing fashion, to the Systems-Driven Approach activities. • Assist the PV industry and community with the development and implementation of codes, standards, and certification practices to assure safe and reliable installations that perform as expected. • Provide the DOE Solar Program with world-class and traceable solar irradiance capabilities, measurements, and standards. Accomplishments • Generated 24 performance reports for the PV systems monitored at the NREL Outdoor Test Facility (OTF). These reports were archived and circulated internally at NREL, and distributed to the respective module manufacturers (milestone completed). • Improved the PVWATTS software. The PV system specification size was changed from an AC power rating to a nameplate DC power rating; an input for an overall DC-to-AC derate factor was added for calculating a reference AC power rating, and residential electric rates were updated with the latest available data (milestone completed). • Completed the technical and logistical preparations for the World Meteorological Organization International Pyrheliometer Intercomparison set for October 2005 (milestone 8/05). • Completed and published the 2005 National Electrical Code (NEC) with “Industry Forum.” consensus changes, simplifying installs, allowing ungrounded PV circuits to reduce costs and improve system performance. • Continued North American Board of Certified Energy Practitioners (NABCEP) practitioner certifications with updated tests, study guide, and task analysis. • Contributed to a number of standards, certification, and test protocols within Institute of Electrical and Electronics Engineers (IEEE), Institute of Energy Conversion (IEC), Underwriters Laboratories (UL), California Energy Commission (CEC), and Florida Solar Energy Center (FSEC). Future Directions • Issue quarterly engineering test reports on small PV system performance at the NREL OTF to provide module manufacturers and the DOE Solar Program with independent analyses of energy performance ratings and long-term degradation rates at the system level. • Upgrade the on-line PVWATTS software program/model to provide decision makers, the public, and the industry with credible estimates of PV system electric generation and costs for specific geographical locations nationally and internationally. Photovoltaic R&D Technology Development 72PDF Image | DOE Solar Energy Technologies Program
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