Professional Solar Panel Cleaning in Southern Wisconsin & Northern Illinois
Protect Your $20k+
Solar Investment.
Restore Every Watt.
Hard water, pollen, and pine debris bake into panel glass — creating hot spots that void warranties and quietly steal 5–15% of your output annually (higher in pollen and agricultural zones). Our manufacturer-approved cleaning keeps your warranty intact and your production maxed. On the Wisconsin State Capitol's 16-year-old array, we delivered a measured +16.7% production lift in a single visit.
Just give us your address — we'll size your system with satellite imagery and reply within 24 hours. Residential & commercial. No mandatory site visit. No high-pressure sales.
Currently booking 1–2 weeks out — reserve your slot now.
Three things every panel owner deserves.
Asset & Warranty Protection
We use only manufacturer-approved methods, so cleaning never voids your warranty — and never lets baked-on debris turn into hot spots and cell damage.
Measured Production Recovery
Dirty panels lose 5–15% output annually (NREL). On the Wisconsin State Capitol's 16-year-old array we delivered a documented +16.7% efficiency jump. Proof, not promises.
100% Deionized, Spot-Free Finish
Our custom-built mobile DI rig & soft rotary brushes leave a spot-free finish with zero harsh chemicals. We bring our own water & power — no hookup to your utilities.
Owner-operated by Marquis — the only person on your roof.
Three steps. No surprises.
From first message to a measurable production lift — usually inside a week.
Share your panel count
Just a rough number works. Use our instant calculator or text Marquis. No contact info required to see your price.
We confirm with satellite
We size your array via satellite imagery — no mandatory site visit, no high-pressure sales call. Final quote in 24 hours.
We clean — you see the jump
Soft-rotary brush + 100% deionized water. Most customers see a measurable production lift the same day. Before & after photos every visit.
Dirty panels quietly cost you money every single month
NREL field data shows soiling silently drains 5–15% of solar production. Here's what that looks like in real dollars for Wisconsin and Northern Illinois owners.
+16.7%
Production recovered
We just cleaned the Wisconsin State Capitol.
Installed in 2009. Never cleaned. 16 years of pollen, dust, and bird debris — gone in one visit.
If Wisconsin's most iconic rooftop trusted us with the work, your property is in good hands too.
See the meter readings & full storyThe Dirt You Can't See Is Costing You
This Dane County homeowner thought their panels were fine. One cleaning told a different story.
68.1 kWh
Daily Production
83.3 kWh
Daily Production
Tap or click either chart to view the full app screenshot
+22%
Production Recovered
+15.2 kWh
Recovered Daily
Same panels. Same sun. Same weather. The only difference? A professional cleaning.
So Was the System Aging or Just Dirty?
If this were degradation, the panels would lose ~0.5% per year — not 22% overnight. Here's how the two compare:
Natural Degradation
~0.5%/year
Slow, permanent, built into the warranty.
Source: NREL Photovoltaic Degradation Rates ReviewDirt & Soiling
5–15% lost
Most of that lost output can be recovered with cleaning
"I looked at my panels every day and thought they were fine. Then I saw my production jump 22% overnight after cleaning. I had no idea how much power I was losing to dirt I couldn't even see."
— Dane County Homeowner, May 2025
This customer was losing up to
$0/yr
in unrealized energy production
Not degradation. Just dirt.
Based on 15.2 kWh/day recovered at WI avg. $0.15/kWh
Is your system underperforming? Find out with a no-obligation assessment.
Get a Custom QuoteCustom quote based on your system and site conditions
Beyond The Numbers
The reason most owners should clean isn't the money.
Recovering 5–15% of lost production is the headline. What we actually protect is harder to put on a spreadsheet — your warranty, your insurance claim history, and the 25-year design life you paid for.
Most warranties require cleaning.
Tesla, SunPower, LG, LONGi, JinkoSolar — every major manufacturer publishes maintenance language in their warranty docs. Ignore it for years, and a future claim can be denied as “owner negligence.”We document every cleaning so you have proof if you ever need it.
See what each manufacturer saysInsurance adjusters look for neglect.
If a hailstorm or fire ever damages your array, your insurance claim depends on showing the system was maintained. Cleaning records are documented maintenance. One inspection per year — with photos, irradiance readings, and a service log — is often the difference between a paid claim and a denied one.
Pollen, bird droppings & minerals etch glass over time.
Wisconsin's 18–20 grains/gallon hard water leaves mineral residue. Pollen forms acidic biofilm. Bird droppings create localized hot-spots that can permanently damage individual cells. Cleaning isn't cosmetic — it's the difference between a 25-year panel and an 18-year one.
Who's on your roof matters.
I'm Marquis — the owner, and the only person you'll meet. Fully insured, OSHA-certified, locally owned.No subcontractors, no rotating crews, no walking on your panels. Same hands every visit, manufacturer-approved tools, same care I'd give my own array.
From Madison to Rockford — and everywhere in between.
I'm based in Dane County, but I cover a 75-mile radius — 7 counties, 52+ cities, across Southern Wisconsin and Northern Illinois. Residential, commercial, agricultural, government — if you have panels in this region, I'll come clean them.
Counties Served
Within roughly a 75-mile radius of Madison — including Madison, Janesville, Beloit, Rockford, Lake Geneva, Watertown, Monroe, Baraboo, Crystal Lake, and surrounding cities.
View all 52+ cities we serveDon't hesitate to reach out—I'd love to help you get more from your panels!