Solar panels only make power from the light that actually reaches them. In Northern Utah, that light has to get past valley dust, spring pollen, summer smoke, and the occasional bird dropping, all of which build up on panels that almost never get rained clean enough.
Studies consistently show soiled panels can lose a noticeable share of their output, and in a dusty, dry climate like ours that loss adds up over a season. For most homeowners, the cost of a cleaning is small next to the energy it recovers.
The catch is that panels are delicate and sit in the sun on a hot roof. We use the same pure-water system we use on windows: soft brushes and purified water that rinses spot-free, with no harsh chemicals and no abrasive scrubbing that could damage the surface.
If your array is more than a year old and has never been cleaned, it is almost certainly costing you output right now. A single seasonal cleaning is usually all it takes to get it back.
Rather leave it to the pros?
Get a free quote for spotless windows across Logan and Cache Valley.