Do Solar Panels Need Cleaning?
Yes, dirty solar panels produce less electricity. In PG&E territory where rates are high, even a 10% production loss means real money left on the table.
“A 10% production loss on a dirty panel in PG&E territory is real money. I've got the data to prove it.”
— Peter Galvez, The Sun Broker
Solar Police Explainer Video Coming Soon
Dust, pollen, bird droppings, and pollution create a film that blocks sunlight from reaching the cells.
Studies show dirty panels can lose 10-25% of their rated output depending on conditions.
In PG&E territory at $0.35/kWh, a 7kW system losing 15% production wastes $400-600 annually.
Professional cleaning typically costs $150-300 and can pay for itself within months.
Myth Busters
Myth: Rain cleans solar panels. Reality: Rain often leaves mineral deposits that further reduce output.
Myth: Cleaning panels voids the warranty. Reality: Most manufacturers recommend regular cleaning.
Myth: You should clean panels yourself. Reality: Safety risks and potential damage make professional cleaning worthwhile.