Outdoor PV Module Degradation of Current-Voltage Parameters: Preprint

Ryan Smith

Research output: Contribution to conferencePaper


Photovoltaic (PV) module degradation rate analysis quantifies the loss of PV power output over time and is useful for estimating the impact of degradation on the cost of energy. An understanding of the degradation of all current-voltage (I-V) parameters helps to determine the cause of the degradation and also gives useful information for the design of the system. This study reports on datacollected from 12 distinct mono- and poly-crystalline modules deployed at the National Renewable Energy Laboratory (NREL) in Golden, Colorado. Most modules investigated showed < 0.5%/year decrease in maximum power due to short-circuit current decline.
Original languageAmerican English
Number of pages9
StatePublished - 2012
Event2012 World Renewable Energy Forum - Denver, Colorado
Duration: 13 May 201217 May 2012


Conference2012 World Renewable Energy Forum
CityDenver, Colorado

NREL Publication Number

  • NREL/CP-5200-53713


  • degradation rate
  • IV
  • IV modeling
  • module degradation
  • photovoltaics
  • PV


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