Solar panels are a set-it-and-forget-it investment — almost. The one bit of maintenance that actually moves the needle is keeping the glass clean, and Utah is one of the harder states to keep it clean in.
Why rain doesn't do the job
Rain rinses loose dust but leaves behind everything dissolved in it — and Utah rain often arrives dirty, carrying dust that dries into a film. Worse, panels are tilted, so runoff concentrates grime along the bottom edge of each panel, right where it shades the cells. Bird droppings and inversion residue don't rinse off at all.
What dirty panels actually cost
Industry studies consistently measure 5–15% production loss from soiling, with the high end in dusty, low-rain climates like ours. On a typical Wasatch Front home system, that's real money every year — usually more than the cost of a professional cleaning. If your monitoring app shows output drifting down versus last summer with no change in weather, soiling is the first suspect.
The Utah schedule
- Once a year minimum — ideally late spring, after pollen and the last dusty storms
- Twice a year for homes near fields, gravel roads, or on the bench
- After any major dust event or nearby construction
- Whenever monitoring shows an unexplained production drop
Why not DIY it?
Panels are on your roof, wired at high DC voltage, and surprisingly easy to damage: tap water leaves the same mineral film you're removing, abrasive pads scratch the anti-reflective coating, and cold water on hot glass can thermal-shock a panel. We clean arrays with purified water and soft brushes from the safety of proper roof access — no minerals, no scratches, no warranty questions.
We clean residential and commercial arrays across Northern Utah, and most customers pair it with window cleaning on the same visit.
Need solar panel cleaning?
Free quotes across Weber, Davis, Salt Lake, Box Elder, and Morgan Counties.