Does Solar Panel Cleaning Really Make a Difference? Yes, solar panel cleaning can make a real difference when dirt, dust, pollen, bird droppings, ash, overspray, or other buildup prevents sunlight from reaching the solar module glass properly. The amount of difference depends on the system, location, weather, roof type, contamination…

What Is Growing on My Solar Panels?  Green, white, gray, or crusty-looking spots on solar panels may be algae, lichen, moss, coastal residue, bird droppings, or hardened environmental buildup. In coastal areas like San Diego, Del Mar, Solana Beach, Encinitas, Oceanside, and surrounding communities, moisture, marine air, pollen, dust, and…