Extreme Weather Events and the Impact on PV Time Series Data

Research output: NRELPoster


The impact of extreme weather events on PV performance was studied by comparing the National Oceanic and Atmospheric Administration database on severe weather with the PV Fleet database on continuous PV performance. We identified 170 systems that were immediately impacted by weather events. These severe weather events lead to a median loss of only 1% of annual production. However, flooding and high wind events were found to have an extremely long tail extending to 60 % loss showing that these discrete events can pose a substantial risk to PV systems. Besides the short-term impact of lost production due to outages, we also found a statistically significant increased performance loss rate (PLR) for high wind events comparing PLR before and after these weather events. In addition, hail events caused a higher PLR for 2 out of 3 systems. More data are required to better quantify the impact, but these first results illustrate the substantial risk these events pose short-and long-term.
Original languageAmerican English
StatePublished - 2023

Publication series

NamePresented at the 2023 Photovoltaic Reliability Workshop (PVRW), 28 February - 2 March 2023, Lakewood, Colorado

NREL Publication Number

  • NREL/PO-5K00-85465


  • degradation
  • durability
  • extreme weather
  • photovoltaics
  • reliability


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