Seasonal Trends of Soiling on Photovoltaic Systems: Preprint

Matthew Muller, Leonardo Micheli

Research output: Contribution to conferencePaper


This work investigates the seasonal variability of PV soiling losses over a 12-month period for sixteen soiling stations deployed in the USA. A new parameter able to rank the sites according to the cumulative losses occurring over 3- and 6- month periods is presented. The relations between soiling losses and particulate matter are briefly discussed as well. Moving from long-term to shorter-term data increases the complexity of the analysis: monthly correlations are found to have lower accuracy than the longer term ones presented in the literature.
Original languageAmerican English
Number of pages8
StatePublished - 2018
Event44th IEEE Photovoltaic Specialists Conference - Washington, D.C.
Duration: 25 Jun 201730 Jun 2017


Conference44th IEEE Photovoltaic Specialists Conference
CityWashington, D.C.

Bibliographical note

See NREL/CP-5K00-73966 for paper as published in IEEE proceedings

NREL Publication Number

  • NREL/CP-5J00-68673


  • particulates
  • PV soiling loss


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