The surface of the panels is delicate and can be easily scratched, which can permanently reduce their efficiency. The best solution is to use a soft brush or sponge. Solar panels need regular cleaning to maintain peak efficiency, but water isn't always available or. . You've probably wondered: "Can't I just wipe my photovoltaic panels with a wet cloth?" After all, it seems like a quick fix for dusty solar arrays. Well, here's the kicker: 68% of residential solar owners use improper cleaning methods, according to the 2025 SolarTech Industry Report. Gently scrub without scratching panels. For stubborn dirt like bird droppings, add a few drops of mild dish soap (such as Dawn) to your water.
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