Interim Test Methods and Procedures for Determining the Performance of Small Photovoltaic Systems

Research output: NRELTechnical Report


The National Renewable Energy Laboratory (NREL) is developing tests and procedures that will determine if the configuration of a small photovoltaic (PV) system is suitable for its intended use, and if the system will perform as specified. The procedures are presented in this report. Development of standard test procedures will allow designers, manufacturers, system integrators, users, andindependent laboratories to assess the performance of PV systems under outdoor prevailing conditions. The IEEE Standards Coordinating Committee 21 (SCC21) has established a project on this subject. These procedures will be submitted to the IEEE SCC21 and International Electrotechnical Commission Technical Committee 82 (IEC TC82) for consideration as a consensus standard. Certification bodiessuch as PowerMark and PV Global Approval Program (PVGAP) may adopt the IEC and IEEE documents when testing systems. Developing standardized test methods and procedures at NREL to evaluate the outdoor performance of PV systems will encourage product quality and promote PV standards development. Standardized tests will assure people that PV systems will perform as specified for their intendedapplications. As confidence in PV systems increases, the successful commercialization of PV will grow internationally.
Original languageAmerican English
Number of pages22
StatePublished - 1998

NREL Publication Number

  • NREL/TP-520-25077


  • photovoltaic systems
  • photovoltaics (PV)
  • system performance
  • test procedures


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