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Predicting production of photovoltaic systems

  • US 9,660,576 B2
  • Filed: 12/08/2014
  • Issued: 05/23/2017
  • Est. Priority Date: 05/04/2010
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • establishing a reference performance model for a reference photovoltaic (PV) system at a reference site, wherein establishing the reference performance model comprises establishing the reference performance model including at least one of a fill factor aging component and a short circuit current aging component;

    establishing a performance factor for an installed PV system based on configuration parameters of the installed PV system, measurements of the installed PV system, weather data at an installation site of the installed PV system and a comparison of the measurements of the installed PV system to the reference performance model; and

    predicting production of the installed PV system based on the performance factor, cumulative weather data and a time dependent performance ratio, wherein the time dependent performance ratio is an anticipated aging rate of the installed PV system.

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