Commercial Solar Panel Cleaning in Southern Wisconsin
Skip the sales pitches and corporate proposals. I'm Marquis Mason, and I clean commercial, agricultural, and municipal solar arrays across 11 Southern Wisconsin counties. Send me your location and panel specs, and you'll have a straight-to-the-point bid in 24 hours. No middlemen, no subcontractors—just direct service from the person doing the work.
Solar Alchemist is Wisconsin's only company dedicated exclusively to solar panel cleaning.
24-Hour Bid
One business day
Net-30
Invoicing standard
$2M Insured · W-9
On request
Multi-Site
One vendor, one PO
One Owner
I clean every panel
Typical Wisconsin commercial buildings
What a typical WI commercial building loses to soiling.
Most Wisconsin commercial rooftops fall between 50 kW (small business, retail, office) and 500 kW (warehouse, ag, mid-size manufacturing). Here’s the annual soiling loss those buildings see at Wisconsin’s mid-2026 commercial electricity rate and typical Southern-WI production. If your site sits high in NREL’s soiling-loss range (farm-adjacent, low-tilt, gravel-road corridor), the higher scenarios apply. If low, the lower ones do. I don’t assume yours is either.
Small commercial · 50 kW
Small business · retail · office
~125 panels · enter in the calculator below
62,500 kWh/yr
~ $8,750/yr at $0.14/kWh
| 5% scenario | $440/yr |
| 10% scenario | $875/yr |
Mid-size · 150 kW
Warehouse · ag · mid-office
~375 panels · enter in the calculator below
187,500 kWh/yr
~ $26,250/yr at $0.14/kWh
| 5% scenario | $1,315/yr |
| 10% scenario | $2,625/yr |
Large facility · 500 kW
Manufacturing · big warehouse
~1,250 panels · enter in the calculator below
625,000 kWh/yr
~ $87,500/yr at $0.14/kWh
| 5% scenario | $4,375/yr |
| 10% scenario | $8,750/yr |
Math: system size × ~1,250 kWh/kW/yr (PVWatts, Southern WI) × $0.140/kWh (EIA, WI commercial mid-2026 average) × loss scenario. Panel counts assume ~400 W modules (current commercial-scale standard). Running a 1 MW+ solar farm or multi-site portfolio? The math scales linearly — text me and I’ll price it directly. Wisconsin has no published soiling study; treat percentages as scenarios, not promises.
And it only grows from here
Alliant Energy’s PSC-approved settlement raises Wisconsin electric energy charges roughly 3.5% in 2026 and another 6% in 2027 (energy charges on the bill, not total bill), so every kWh you lose to soiling costs more next year than it does today. See the Alliant Wisconsin rate review for the utility’s own timeline, and my sources page for the citation.
Wisconsin gives your array 6–8 strong production months. Soiling steals from every one of them.
Portfolio-Grade Estimate · Commercial & Institutional
Model the annual production your building is bleeding to soiling.
Purpose-built for warehouses, plants, agricultural operations, campuses, and government facilities. Enter the array's scale, the mounting profile, and its cleaning history, get an NREL-grounded soiling-loss projection your facilities team can budget against. No lead capture, no per-panel rates published. When you're ready, one click carries your inputs into my 24-hour written-bid workflow.
Multi-building portfolio? Enter the combined module count across all sites, I'll break it out per address in the written bid.
The Wisconsin State Capitol's documented 16.7% more sunlight reaching the glass is a measured before-and-after reading from one real cleaning on that specific 17-year-old array — a same-panel spot reading, not a system-wide production claim. This estimator is an industry-average projection based on your inputs, not a promise about your facility's actual performance.
Case Study · Government
Wisconsin State Capitol, 16.7% more sunlight reaching the glass
I cleaned the Capitol's 17-year-old rooftop array using the same manufacturer-matched pole-fed 100% deionized water rig and soft rotary brush I'd use on your facility. No foot traffic on glass. A panel-specific biodegradable soap is used only for heavy soiling. An on-panel irradiance reading measured 16.7% more sunlight reaching the glass (799.7 → 933.9 W/m²) on the panel I tested, before/after the clean — a same-panel spot reading, not a system-wide production claim.
Same panel, same spot, 30 minutes apart · Wisconsin State Capitol · May 14, 2026
17 yrs
Array age at time of cleaning
+16.7%
Irradiance reading (W/m²) — before/after
1 visit
Manufacturer-matched, no foot traffic
↳Same rig on a residential roof: my own 34-panel Dane County array measured +22% output the day after cleaning. Same operator, same safety standards, same manufacturer-matched method as the Capitol job. One day isn't a formal scientific test, but the trend held through the following weeks.
Case Study · Commercial (Flat-Roof)
The ballasted flat-roof job most cleaners pass on.
A small Southern Wisconsin business — ballasted, gravel-set flat-roof array. The exact installation type most cleaners pass on because ballast blocks and frame clearance make brush access awkward. I took it. The proof came home on a fingertip.
Ballasted
Flat-roof, gravel-set, the harder access most crews skip
Manufacturer-matched
Pole-fed 100% DI water + manufacturer-matched contact tooling · zero foot traffic on glass
Sky-mirror clean
Every row, every panel, visible reflection restored across the whole array
One swipe. Every fingertip came back coated in a fine film, the kind of buildup that reduces production on clear days without ever showing from the ground.
Who I serve
Commercial Facilities
Manufacturing, warehousing, retail
Agricultural Operations
Farms, dairies, ag-co-op solar
Government Sites
Municipal, state, federal arrays
Multi-Site Portfolios
Property managers, PPA operators
What every bid includes
No surprise line items. No back-and-forth. Every bid I send is a firm written price backed by a standardized scope of work — reviewed by me, quoted by me, executed by me.
Satellite-verified panel count
confirmed on-site before the first clean
Pole-fed 100% deionized water + manufacturer-matched contact tooling
matched to your panel’s published manual
DI water first. Manufacturer-matched surfactant only when needed
zero residue, no harsh chemicals
Canopy & elevated arrays
serviced with rented lift equipment when reach demands it
Before / after photo documentation
for every visit, every site
Annual & bi-annual maintenance options
priced alongside the one-time bid
Net-30 invoicing
on commercial accounts
W-9 & $2M liability insurance
documentation on request
Multi-site contract structuring
matched to your AP cycle
Why facility managers pick me over the national outfits
Manufacturer-Matched Methods
I clean per each manufacturer's published guidelines — Tesla, SunPower, LG, LONGi, JinkoSolar, and 10+ others — so your asset stays warranty-compliant. I can email you the exact manufacturer bulletin I'm following before the job.
Same Hands, Every Visit
I quote every facility. I show up to every cleaning. There's no BDR, no sub, no rotating crew — which means no miscommunication compounding across visits. When you call, you get me.
Ground-Fed DI Rig
Pole-fed 100% deionized water applied through manufacturer-matched contact tooling. No foot traffic on your glass, no pressure washing, no microfracture risk. Spot-free finish because the DI rinse leaves zero mineral residue.
Procurement-Friendly
W-9 emailed within the hour. COI naming your entity as certificate holder by end-of-day. $2M general liability. MSA support, references on request.
One Local Vendor
Madison-based. I service all 11 counties of Southern WI. Managing 3+ sites? One PO, one W-9, one phone number across your entire portfolio. I'll price the bundle and align invoicing to your AP cycle.
Honest ROI
I won't overpromise. My numbers cite NREL and manufacturer studies. The Capitol's +16.7% is documented (measured with before-and-after readings on cleaning day), and I'd rather lose the bid than oversell the number.
Frequently asked by procurement
How fast will I get a bid?+
I need W-9, COI, and MSA docs for our vendor packet. Can you provide?+
Net-30 invoicing?+
Do you handle larger arrays?+
Can you bid a multi-site portfolio?+
What happens if it rains after I schedule?+
How do I get you started?+
Send me your panel count. I'll send you a written bid tomorrow.
One business day. Firm pricing. Full scope of work. No sales calls. No obligation.
One-page overview procurement staff can forward internally, capabilities, insurance, contract vehicles, and the Capitol reference installation.
— Marquis, direct: (608) 571-4173 · text or call — I answer personally