Seasonal Trends of Soiling on Photovoltaic Systems

Leonardo Micheli, Matthew Muller

Research output: NRELPresentation


This work investigates the seasonal trends of PV soiling losses, using data collected from six soiling stations deployed in the USA. The preliminary analysis shows that PV sites have different seasonal patterns, but these can be grouped depending on the average soiling ratios registered at each location. Initial results suggest that it might be possible to identify seasonal trends of high-soiling sites using precipitation and pollution data. On the other hand, a more accurate analysis of the local and seasonal activities might be needed in lower soiling sites.
Original languageAmerican English
Number of pages20
StatePublished - 2017

Publication series

NamePresented at the 44th IEEE Photovoltaic Specialists Conference, 25-30 June 2017, Washington, D.C.

NREL Publication Number

  • NREL/PR-5K00-67801


  • linear regression
  • particulate matter
  • photovoltaic performance
  • precipitation
  • soiling
  • soiling losses


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