Cleaning frequency optimization for soiled photovoltaic modules

Mohammad Naeem, Govindasamy Tamizhmani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Scopus citations


This study was conducted to determine the optimum cleaning frequency for cleaning Photovoltaic (PV) modules installed in Mesa (near Phoenix), Arizona, United States. By monitoring the soiling loss of PV modules mounted on a mock rooftop at ASU-PRL during May through June 2014 (highest soiling period for this site), a detailed soiling loss modeling was obtained. During the dry/soiling summer season, the daily soiling rate has been determined to be -0.061% for 20° tilted PV modules. Based on the monitored soiling rate and extensive simulation of this investigation, it is concluded that the cleaning is not economically justifiable for 20° or higher tilted residential PV modules of this and nearby sites.

Original languageEnglish (US)
Title of host publication2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479979448
StatePublished - Dec 14 2015
Event42nd IEEE Photovoltaic Specialist Conference, PVSC 2015 - New Orleans, United States
Duration: Jun 14 2015Jun 19 2015


Other42nd IEEE Photovoltaic Specialist Conference, PVSC 2015
Country/TerritoryUnited States
CityNew Orleans


  • angle of incidence
  • cleaning frequency
  • financial analysis
  • photovoltaic modules
  • soiling loss

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials


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