Why Dusty Solar Panels Matter in El Cajon
El Cajon gets plenty of sun, which makes it a great place for solar. It also gets plenty of dust. Here’s why clean panels matter and how to keep them that way.
How dirt affects your panels
Solar panels make power from sunlight that reaches the cells. Dust, pollen and bird droppings block some of that light, so dirty panels can produce less than clean ones.
Why inland panels get dirty fast
Inland valleys like El Cajon see dry, dusty weather much of the year, and long stretches without rain mean dirt just builds up. Panels with a low tilt hold onto even more of it.
Signs it’s time to clean
A visible layer of dust, bird droppings or spots on the glass, or production numbers in your solar app that are lower than usual for the season.
Clean them the safe way
Panels should be cleaned gently, not blasted with high pressure. We clean them carefully, and if your roof needs it too, we can clean it on the same visit.
Book a free estimate
Northman Exteriors cleans solar panels across East County, including El Cajon. Solar panel cleaning starts at $200, and military customers get 15% off.
