Solar panels are a long-term investment, and their output depends directly on how much light reaches the cells. Dust, pollen, bird droppings, and soot can reduce output by 15–25% — a loss most homeowners never notice because it happens gradually.
In San Jose, dry summers combined with occasional wildfire smoke create the perfect conditions for buildup. A single season without rain can visibly coat panels, and rain alone does not restore full performance.
Our team uses deionized water and soft brushes designed specifically for photovoltaic surfaces — no harsh chemicals and no abrasive tools that could void your panel warranty.
An annual professional cleaning typically pays for itself in recovered production within the same year.