Solar Panel Cleaning in Thunder Rock, Kuna, Idaho

Sprinkler Overspray Actually Reaches These Arrays

On most houses a roof array is safely above the sprinklers. On a compact single-story Thunder Rock plan with heads a few feet from the wall throwing high for new landscaping, overspray genuinely reaches the panels. That water is untreated Boise-Kuna canal water carrying suspended silt and dissolved mineral, and it dries onto glass that is sitting in full sun at elevated temperature, which bakes the deposit on considerably harder than it would set on a window.

Mineral Spots Are Shade, Not Just Marks

It is worth being clear about why this costs money rather than just looking untidy. Every opaque or translucent mineral spot on a panel shades the cell beneath it, and shading is what solar panels are least tolerant of, because panels in a string interact. A stippled pattern of hard water spots across an array is a distributed shading problem, and it reduces production in a way that scales with how much of the surface is covered.

The Cheapest Fix Is the Sprinkler, Not the Cleaning

If a head is throwing onto your array, the mineral comes straight back within weeks of any cleaning. We identify the offending head and tell you which one it is at no charge while we are on site, because a five-minute adjustment is worth more to you than a recurring panel clean. Saying so costs us repeat work, which is the point: on a compact single-story with a low array, this is very often the whole answer.

Deionized Water and Pricing

Panels are flooded with pure deionized water, which has no dissolved solids and so lifts soiling and dries without leaving anything behind. Nothing abrasive touches the anti-reflective coating, because scratching it costs output permanently. No soap is used either. Solar panel cleaning is quoted by array size, and on the modest arrays typical of these compact plans the number is correspondingly modest.