Does Cleaning Solar Panels Actually Increase Output?

Solar panels have no moving parts, so it's easy to forget they need maintenance. But a layer of dust, pollen, and bird droppings can quietly eat into your production.

How much output do dirty panels lose?

Soiled residential panels commonly lose between 5% and 20% of their output, and even more in dusty or high-pollen areas like much of Southern California. Cleaning removes that buildup so your array produces closer to its rated capacity.

How often should you clean them?

For most SoCal homes, quarterly cleaning keeps output high given our dust and dry seasons. A maintenance plan handles it automatically so you never have to think about it.

Clean safely

Use soft tools and deionized water — never abrasive brushes or high pressure that could damage cells or seals. When in doubt, a professional cleaning protects both your output and your warranty.