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Clear Light Window Washing, Window Cleaning, Petaluma, CA

Solar Soiling Study

by Addriane Kimber

"...average performance loss due to soiling in
dry climates occurs at a rate of 0.0011 kWh/kWp/day
without rainfall. This equates to an annual energy loss of
between 2-6%
depending on the region and environment."

Full Report Here

Your Low Cost Solution
for Solar Panel Cleaning

Panel soiling has been proven to reduce the generating output from photovoltaic (PV) installations. All PV manufactures recommend regular cleaning. Solar clouding directly reduces the generating efficiency of PV modules. The economic benefit of increased production greatly outweighs the cost of periodic maintenance of the PV panel surface.

According to the Solar Electric Power Association (SEPA), PV electricity output will decline approximately 10% due to accumulation of dirt, dust, and other residues. Research cited by SEPA indicates that PV electricity generation will decline 15-20% in areas where bird droppings, urban pollution or dust from farming operations are common. Annual or bi-annual cleaning of panel surfaces eliminates these efficiency losses.

dirty solar panel   clean solar panel
BEFORE - panels with bird droppings and dirt
AFTER - panels cleaned by Clear Light Solar

The build-up of mineral deposits over time will create a "sheeting" problem which in turn makes for faster build-up requiring more frequent cleaning.