Solar Panel Cleaning
in Portland, OR
Safe for Your Panels and Your Warranty
Panels looking filmy, or output dipping since last summer? Portland panels collect pollen in spring, dust and wildfire haze in summer, and fir needles, bird droppings, and moss creep the rest of the year. We clean panels with soft brushes and deionized water, no harsh chemicals and no high-pressure washing, so the coating and your manufacturer’s warranty stay intact.
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Video demonstration of our solar panel cleaning service.
Why Portland Solar Panels Get Dirty and Why Rain Doesn't Fix It
It’s tempting to assume Portland’s rain keeps panels clean. It doesn’t: rain rinses loose dust but leaves mineral film, pollen residue, bird droppings, and the grit that washes down from roof and trees. Shaded or low-tilt arrays also grow the same algae and moss the rest of your roof does. Every layer between the sun and the cell is output you paid for and aren’t getting.
Two things matter when cleaning panels:
- Method. Abrasives, harsh detergents, and pressure washers can scratch or cloud the glass and violate manufacturer cleaning guidelines. We use soft brushes and deionized water, which dries spot-free without chemicals.
- Who’s on your roof. Panel cleaning is roof work. Our technicians already work on Portland roofs daily, insured, with the access equipment to do it safely.
Get a Free Solar Cleaning Estimate
Not sure where to start? That’s normal. We’ll ask a few quick questions about roof access and the debris you deal with, then recommend the best-fit cleaning option for your solar panels and budget.
What Solar Panel Cleaning Costs in Portland
Most Portland solar panel cleanings run between $250 and $650. Your exact price depends on: the number of panels and array size, roof height, pitch, access, how much buildup has accumulated (routine film vs. established moss/droppings), and whether you combine it with roof or gutter cleaning, as one visit costs less than two.
You’ll get an exact, itemized quote before we schedule anything: usually the same day. Send us your address and a couple of photos, and we’ll email you a complete cost breakdown.
Small Solar Panel System
Typical price range: $250–$350
Average Cost: ~$300
Medium Solar Panel System
Typical price range: $350–$450
Average Cost: ~$400
Large Solar Panel System
Typical price range: $450–$650
Average Cost: ~$550
For larger homes, steep roofs, multi-story access, and heavy debris buildup, the total project cost can reach ~$650+.
Our 4-Step Solar Panel Cleaning Process
We look over the array before touching it, any cracks, damaged seals, loose wiring or mounts, and tell you about anything we find. We clean panels; if we spot a problem, you'll know before it grows.
Soft brushes and deionized water remove dust, pollen, droppings, and film without scratching the glass or leaving mineral spots. No harsh chemicals, nothing that conflicts with manufacturer cleaning guidelines.
A final deionized rinse prevents water spots and streaks, which is the reason garden-hose cleanings leave panels looking hazy.
We check every panel is clean and the array is as we found it, then walk you through what we saw on the roof.
Why Portland Homeowners Choose Us for Solar Panel Cleaning
Roof crews, not window washers
Our technicians work on Portland roofs every day, insured, with proper access equipment, as panel cleaning is roof work.
Warranty-safe method
Soft brushes and deionized water, consistent with manufacturer cleaning guidance. No pressure washers, no abrasives, no harsh detergents.
One visit, whole roofline
Most customers combine panel cleaning with roof cleaning, moss treatment, or gutter cleaning, this makes it cheaper than booking separately.
Same-day online estimates
Google Earth measurement + your photos = an itemized emailed proposal, usually within hours.
Real, verifiable reputation
740+ five-star Google reviews, Angie's List Super Service Award winner. Locally owned since 2015, and the team carries about 20 years of combined experience.
Fully insured
In the unlikely event anything is damaged, we take responsibility for it, we make things right, and leave your property better than before.
Monday – Saturday: 8:00am – 6:00pm
Solar Panel Cleaning Across the Portland Metro
We’re based at 650 NE Holladay St in Portland and clean roofs throughout the metro, including Beaverton, Gresham, Happy Valley, Lake Oswego, Milwaukie, Oregon City, Tigard, West Linn, Wilsonville, and Vancouver, WA, plus surrounding areas. Hours: Monday–Saturday, 8 AM–6 PM.
Portland Solar Panel Cleaning Questions, Answered
It depends on the number of panels, roof access, and buildup. Most jobs run between $250 and $650. You get a free itemized quote, usually same-day, from Google Earth and your photos.
Rain rinses loose dust but leaves mineral film, pollen residue, droppings and it does nothing about moss on shaded arrays. If your panels haven’t been cleaned in a couple of years, there’s a layer between the sun and your cells.
Dirty glass blocks light, so cleaning restores whatever output the buildup was costing you, how much depends on how dirty the panels were. Check your production app before and after; the comparison is your own proof.
Done properly, no, manufacturers expect panels to be cleaned and publish cleaning guidelines. Our soft-brush, deionized-water method is consistent with them. What risks a warranty is pressure washing or abrasive scrubbing.
Once a year suits most arrays; panels under firs or on shaded, low-tilt roofs may need attention more often. Pairing it with your annual roof or gutter service is the economical way to keep on schedule.
Ground-level rinsing is fine. The trouble is roofs: wet glass, height, and grippy footwear don’t mix, and hard tap water leaves mineral spots. If it involves a ladder, we’d rather you let an insured roof crew handle it.
Yes, every cleaning starts and ends with an inspection, and we tell you about cracks, loose mounts, or seal issues we spot. We don’t repair panels, so there’s no upsell attached to what we report.
No, we need roof access, a water spigot, and cars out of the work area. We text you 30 minutes before arrival.
Solar Panel Cleaning Projects Gallery
Ready To Make A Change?
Get Your Free Solar Panel Cleaning Estimate Today
Send your address and a photo of your array, and we’ll email an itemized quote, usually the same day, no site visit required. Free estimates, no obligation, satisfaction guaranteed.
Trusted by Oregon City Homeowners Like You
Offices
Head Office
PDX Roof Cleaning & Pressure Washing LLC
650 NE Holladay St Suite 1600
Portland, OR 97232
Gresham Office
2135 SW Towle AVE,
Gresham, OR 97080
Ready to Restore Your Home’s Curb Appeal?
If you’re tired of overflowing gutters or repeated cleanings, we’ll help you choose a guard that fits your roof edge, debris type, and budget, and then install it properly for Portland weather.
- Safe, Eco-Friendly Cleaning Methods
- Trained & Insured Professionals
- Competitive, upfront pricing
- Trusted locally in Portland Metro