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committees. More than 500 inquiries and inputs were recorded in 2004. The draft document continues to be updated with industry guidance, and with a major consideration that value exceeds costs and that tests be conducted in a manner that eliminates bottlenecks in the certification process. Critical sections of the document are being considered by the California Energy Commission for inclusion into its Emerging Renewables Program and will include an option for rebates to be based on system performance. Testing of applicants continued throughout 2004, with nearly 200 approved certificants now on the rolls. NABCEP committees, supported through SNL, updated the applicant study guide, candidate handbook, task analysis, applicant requirements, and application forms. This work will be supported only minimally in 2005 through SNL, but has earned a five-year grant for continued support through the DOE Golden Field Office. Publications in 2004 included the updated Study Guide for Photovoltaic System Installers and Sample Examination Questions. The 2005 NEC cycle was completed in 2004. The proposed consensus inputs from the SNL-led industry forum were widely accepted by the Code-Making Panel for inclusion in the 2005 code. The most significant changes included an easing of requirements for grounding PV arrays and allowing a first disconnect to reside within a building, provided DC circuits are enclosed in metallic conduit to the point of disconnect. The 2005 NEC was published in September 2004 and will be effective as of January 2005. Several IEEE standards, recommended practices, and guidelines were supported by SNL in FY 2004. The most significant was the IEEE1547.1 document entitled a “Draft Standard for Conformance Test Procedures for Equipment Interconnecting Distributed Resources with Electric Power Systems.” The IEEE1547.1 is scheduled for balloting early in 2005. Other related documents included “IEEE 1547.2 Draft Application Guide for the IEEE 1547 Draft Standard for Interconnecting Distributed Resources with Electric Power Systems,” and “IEEE 1547.3, the Draft Guide for Monitoring, Information Exchange and Control of DR Interconnected with Electric Power Systems.” The UL standard UL1741 is undergoing revisions and a title/purpose change. The new title, “The Standard for Inverters, Converters and Controllers for Use in Independent Power Production Systems,” indicates that this standard has been expanded from just PV inverters and now includes inverters for all types of independent power systems. The changes and additions are extensive and will be correlated with the IEEE1547 standard in order to unify required testing for utility- interactive inverters. The next edition of the UL standard is scheduled for release in mid-2005. The International Electrotechnical Committee (IEC) standards often become law in Europe. SNL and NREL support the United States participation in IEC standards writing through technical expertise and subcontracts to have industry lead several of the standards activities. Much of the work is focused on assuring domestic and international industry interests and component compatibilities in these important international standards. In the area of solar radiometry, we: • Calibrated more than 180 broadband, 10 spectral, and 8 solar simulator sensors and systems for NREL and industry research applications. • Validated classification of the FSEC Flash Solar Simulator for module rating in Florida. • Characterized and classified six solar flash simulators for NREL and industry. • Supported the September 2004 ISO 17025 accreditation of the NREL Photovoltaic Testing Group PV Reference Cell Calibration by integrating the required optical metrology functions into the PV Testing Group’s Quality System. We also completed all project-level milestones to: • Install four new PV system test beds at the NREL OTF (9/1/04). • Generate quarterly system performance reports and analyses and deliver to manufacturers (9/30/04).PDF Image | FY 2004 ANNUAL REPORT DOE Solar
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