A solar array in Valnova loses output to something specific. abrasive grit on panel glass, where a scratch costs output permanently.
Two loads reach these arrays: sharp granite grit delivered by wind most dry afternoons, and gritty alkaline construction fines from nearby lots. Both scatter light, and both scratch if anyone brushes them dry. On a window a scratch is replaceable for a known number; on a panel it scatters light into the cell and costs output for the life of the array. Everything gets flooded with pure deionized water before contact, soft brush only where water alone will not lift it.
The grit up here is sharp and mica-flecked rather than powdery, and panel glass is less forgiving than window glass in one crucial way: a scratched window can be replaced for a known number, while a scratched panel scatters light into the cell and costs you output for the life of the array. Every surface gets flooded with pure deionized water before anything touches it, with a soft brush used only where water alone will not lift a deposit, and no soap at all.
Wind delivers fresh granite grit most dry afternoons up here, and there is rarely mature landscaping to slow it. That means an annual cycle — the sensible default in a sheltered valley subdivision — leaves a foothills array soiled for most of the year. We will look at your specific placement and give you an interval based on it rather than defaulting to annual because that is the standard answer. Arrays are quoted per array after a look at the roof.
Arrays are quoted per array after a look at the roof, because reach rather than panel count usually sets the number. Every wash is 100% pure deionized water with no soap — soap residue on panel glass attracts the next round of dust and can raise a question with your installer, so there is nothing to gain from it. Active building across the site means route timing and site traffic are worth a mention at booking.
Free, no-obligation quote — we'll call or text you with your price.
Get My Free QuoteStill wondering about something? Call or text us at (208) 453-6760.
Done properly, no — and done wrong it genuinely is. Abrasive scratching and soap residue are both things an installer can point at. We use pure water with nothing dissolved in it and no soap, and flood before anything touches the glass.
Enough to matter on a soiled array, and we will give you an honest answer rather than a number we cannot stand behind. Uniform dust costs a few percent; a bonded or patchy film costs more because it shades cells unevenly. If shade rather than soiling is limiting your output, cleaning will not fix it and we will say so.
No — 100% pure deionized water and nothing else. Soap residue on panel glass attracts dust and can raise a warranty question with your installer, so there is nothing to be gained by it.
You can, and it often backfires. Eagle's water is hard, so a hose rinse dries into a mineral film that shades cells about as well as the dust did. Worse, hosing does not lift grit — it redistributes it, and anything then brushed is abrasive on glass you cannot replace cheaply.
Yes — Eagle is one of our nine Treasure Valley cities and we run it as a regular route rather than a stretch call, from the Chinden edge up into the foothills. Call or text (208) 453-6760 and we will tell you the next open slot.
Our 7-Day Rain Guarantee covers it. Rain on a clean surface is largely harmless — it is the dust it lands on that spots. If a storm genuinely undoes the work inside seven days, we come back out.
Free, no-obligation quote. Next-day slots available.
Get My Free Quote