Improved Test Method to Verify the Power Rating of a Photovoltaic (PV) Project

A. Kimber, T. Dierauf, L. Mitchell, C. Whitaker, T. Townsend, J. NewMiller, D. King, J. Granata, K. Emery, C. Osterwald, D. Myers, B. Marion, A. Pligavko, A. Panchula, T. Levitsky, J. Forbess, F. Talmud

Research output: Contribution to conferencePaperpeer-review

24 Scopus Citations


This paper reviews the PVUSA power rating method [1-6] and presents two additional methods that seek to improve this method in terms of model precision and increased seasonal applicability. It presents the results of an evaluation of each method based upon regression analysis of over 12 MW of operating photovoltaic (PV) systems located in a wide variety of climates. These systems include a variety of PV technologies, mounting configurations, and array sizes to ensure the conclusions are applicable to a wide range of PV designs and technologies. The work presented in this paper will be submitted to ASTM for use in the development of a standard test method for certifying the power rating of PV projects.

Original languageAmerican English
Number of pages6
StatePublished - 2009
Event2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009 - Philadelphia, PA, United States
Duration: 7 Jun 200912 Jun 2009


Conference2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009
Country/TerritoryUnited States
CityPhiladelphia, PA

NREL Publication Number

  • NREL/CP-520-46128


  • energy resources
  • iec standards
  • laboratories
  • photovoltaic systems
  • power engineering and energy
  • power measurement
  • production systems
  • renewable energy resources
  • solar power generation
  • system testing


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