Yes—dirty panels definitely produce less energy.
Even light dust or pollen can reduce output by 10–20%.
More buildup? More loss.
What Causes Efficiency Loss?
– Pollen and dust scatter light
– Bird droppings cause hot spots
– Algae or mildew block entire sections
– Leaves and sap can physically damage panels if left too long
How Often Should You Clean Them?
In South Carolina? At least once or twice per year—especially before and after pollen season.
We use a soft bristle brush and mineral-free rinse system so your warranty stays protected and your panels work harder.
Pressure Washing FAQs 
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