Local Variability in PV Soiling Rate

Michael Gostein, Kendra Passow, Michael G. Deceglie, Leonardo Micheli, Bill Stueve

Research output: Contribution to conferencePaperpeer-review

11 Scopus Citations


We examine the correlation between monthly PV system soiling rates over a multi-year period within two groups of First Solar soiling stations in separate regions of California as a function of site separation. The results demonstrate large seasonal variations in monthly soiling rates, with seasonal patterns that differ between sites. Monthly patterns at nearby sites were more highly correlated, suggesting that soiling rates can be strongly affected by local geography and weather. For the two regions studied, soiling rate pattern correlation diminished beyond a distance on the order of 50 km.
Original languageAmerican English
Number of pages5
StatePublished - 26 Nov 2018
Event2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) - Waikoloa Village, Hawaii
Duration: 10 Jun 201815 Jun 2018


Conference2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC)
CityWaikoloa Village, Hawaii

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

NREL Publication Number

  • NREL/CP-5K00-73697


  • performance analysis
  • photovoltaic systems
  • solar energy
  • solar power generation


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