Solar Panel Cleaning · Madison, WI & Northern Illinois
Professional, manufacturer-approved solar panel cleaning for residential homes, commercial facilities, agricultural operations, and government buildings across Southern Wisconsin and Northern Illinois. We deliver an independently measured +16.7% production lift on the Wisconsin State Capitol's 16-year-old rooftop solar array — using 100% deionized water, soft-rotary brushes, zero chemicals, zero foot traffic on the glass, and zero warranty risk.
What we do
- Residential cleaning: Instant calculator starting at $175 (1-story, ≤20 panels) or $215 (2-story). See your price in seconds at /pricing.
- Commercial & agricultural cleaning: Custom written bid emailed within 24 hours. Net-30 invoicing, COI & W-9 on request, multi-site contracts welcome. /commercial.
- Government & institutional: The Wisconsin State Capitol is one of our reference installations.
Why owners cleaned by Solar Alchemist recover output
NREL field data shows soiling silently drains 5–15% of solar production every year — up to 15–20% in agricultural and industrial zones. Rain doesn't fix it; mineral residue, pollen, dust, and bird traffic bake into a film that only a deionized-water cleaning can lift. One cleaning typically recovers a year's worth of lost output on day one. For a 200-panel commercial site that's $550–$1,700/yr; on a 1 MW array it's $8K–$23K/yr (NREL field data + EIA Wisconsin commercial rate).
Frequently asked questions
Do solar panels really need to be cleaned in Wisconsin?
Yes. Wisconsin's pollen, ag dust, industrial particulate, bird droppings, and snow-melt mineral residue silently build a film that blocks 5–15% of production every year (NREL field data). Rain only rinses loose dust; it can't lift baked-on grime. One warranty-safe cleaning typically restores a year's lost output on day one.
Will rain clean my solar panels?
No. Rain washes off loose dust but actually makes long-term soiling worse — each rainfall leaves hard-water mineral spots and concentrates particulates at the panel edges, where they bake into a permanent film. NREL and IEA-PVPS data confirms 5–15% annual loss persists with rain-only sites.
How much output can I recover by cleaning my panels?
5–15% on most residential systems, 15–20% on agricultural / industrial commercial arrays. Our Wisconsin State Capitol case study delivered a measured +16.7% production lift the same day as the cleaning.
Do you use chemicals on the panels?
No. We use 100% deionized pure water with soft-rotary brushes — never harsh chemicals, never abrasive pads, never high-pressure water. This is the only method approved by every major panel manufacturer.
Does cleaning void my solar panel warranty?
No — our method preserves every major manufacturer warranty. Chemical cleaners, abrasive pads, pressure-washing, and any foot traffic on the glass all void panel warranties. We use none of those.
Do you clean commercial solar arrays?
Yes. We clean commercial, agricultural, government, and multi-site arrays from 100 to 5,000+ panels across Southern Wisconsin and Northern Illinois. Every commercial site receives a custom written bid within 24 hours — no published per-panel rate. Request a commercial bid.
Service area
Madison, Fitchburg, Sun Prairie, Middleton, Verona, Waunakee, Stoughton, Janesville, Beloit, Lake Geneva, Fort Atkinson, Watertown, Monroe, Baraboo, Portage, Rockford, Loves Park, Belvidere, Crystal Lake, McHenry, Woodstock, Freeport, and 30+ more cities across Dane, Rock, Green, Iowa, Jefferson, Walworth, Sauk, Columbia, Waukesha, Kenosha, Racine, Washington counties (Wisconsin) and Winnebago, Boone, McHenry, Stephenson, Kane, Lake, Will, DuPage, Kendall counties (Illinois).
Get a quote today: Residential instant calculator · Commercial 24-hour custom bid · or call (608) 571-4173.
