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PV Systems Engineering Performing Organizations: National Renewable Energy Laboratory Sandia National Laboratories DOE Golden Field Office Key Technical Contacts: Roland L. Hulstrom (NREL, Primary Contact), 303-384-6420, roland_hulstrom@nrel.gov Ward Bower (SNL), 505-844-5206, wibower@sandia.gov Glenn Doyle (DOE/GO), 303-275-4706, glenn.doyle@go.doe.gov DOE HQ Technology Manager: Dan Ton, 202-586-4618, dan.ton@hq.doe.gov FY 2004 Budgets: $1,425K (NREL), $156K (SNL), $200K (DOE/GO) _____________________________________________________________________________________ Objectives • Determine, characterize, document, and model the near and long-term performance and reliability of candidate, emerging PV technologies in the context of small, grid-connected, systems. • Provide benchmark-type data and analyses for technical contributions into codes, standards, and certifications to best implement a systems-driven approach for infrastructure building and evolutionary or leapfrog advances of grid-connected and stand-alone PV systems. • Assist the PV industry and community with the development and implementation of codes, standards, and certification practices to assure safe installations that perform as expected. • Provide the DOE Solar Program with world-class and traceable solar radiometric capabilities, measurements, and standards. Accomplishments • Long-term performance and reliability testing and reporting continued on 10 small (<2 kW), grid- connected PV systems deployed at the NREL Outdoor Test Facility (OTF). • Mutual site visits with Arizona Public Service and the PowerLight Corporation were conducted to determine and initiate collaborative efforts regarding PV system performance and reliability testing, analyses, and system design/modeling. • Achieved the final approval, after several years of development, of the IEEE Standard 1526 for stand-alone PV system performance testing. • Completed draft of Performance Test Protocol for Evaluating Inverters Used in Grid-Connected Photovoltaic Systems and submitted to the California Energy Commission for inclusion in its Emerging Renewables Program Guidebook. • Completed SNL-led industry forum work for the 2005 National Electrical Code with proposals and balloting process for PV system installation updates. • Enhancements were completed for the NREL PVWATTS PV applications and system model, consisting of improvements in performance, ease of use, and output. • Completed two rounds of PV installer certification testing, including updating each test and the study guide used by applicants. • Provided technical review and extensive input to clarify and expand the UL1741 standard for listing inverters for PV and other distributed applications. • Provided technical review and input to draft IEEE1547.1 standard for interconnecting inverters with the utility grid. • NREL’s optical metrology passed external and internal audit and was deemed suitable for ISO 17025 accreditation of NREL’s Photovoltaic Reference Cell Calibration ISO certification.PDF Image | FY 2004 ANNUAL REPORT DOE Solar
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