Solar panel cleaning in Washington

Across the Washington metros where we track local pricing, a professional cleaning runs $150–$325 per visit, about $6 to $16 a panel. Panel count, roof pitch and height, and access set the price inside that band.

Local pros in Seattle recommend 1–2 times a year.

Just after the local build-up season ends, so the array goes into its brightest months clean. in Seattle the heaviest build-up is Apr–May. If you only book once, book it as that stretch winds down.

Seattle, at #77 on our national Grime Index, where uncleaned panels lose an estimated 5.5% of annual output. The full ranking is on our dirtiest cities page.

For Washington our soiling model splits the grime roughly 30% dust, 50% pollen and 20% bird droppings. Rain rinses loose dust but leaves pollen film, droppings, sap and salt, which is why a professional cleaning still pays in a wet climate.

6 solar panel cleaning pros serve Washington on CleanMySolarPanels, across 1 city: Seattle (6). Each listing shows the services offered and a free quote button.

Seattle. Each city page has its own cost band, cleaning schedule, dust season and the pros that serve it.

Pros across the state list Residential panel cleaning, Window, gutter & exterior cleaning, Solar panel cleaning, Holiday lighting, Commercial panel cleaning, Maintenance plans and Repair, removal & reinstall. Not every company offers every service, so each listing shows what that company does.

1 Washington pro cleans commercial arrays: flat roofs, carports, warehouses and ground mounts. Commercial work is normally priced per panel, scheduled around the site's hours, and often includes a production report before and after.

1 Washington pro offers a recurring plan, usually at a discount to one-off pricing. It pays off most where local pros recommend two or more cleanings a year, for larger systems, and for homes under trees or near open ground.

5 of the 6 Washington pros listed here state that they carry liability insurance. Ask for the certificate before anyone goes on your roof; a reputable company sends it without fuss.

Reviews on this site come only from jobs booked through it, so they appear as Washington pros claim their profiles and complete work. Until then each listing shows the company's own site, phone and services.

In Seattle an uncleaned array loses an estimated 5.5% of output a year, so a $150–$325 cleaning recovers its cost on most home systems. Our worth-it guide runs the sums city by city, and the savings calculator does it for your own system.

Request quotes anyway: pros travel between metros for a standard cleaning. The nearest cities with listed pros are Astoria, Oregon, Hood River, Oregon, Portland, Oregon, Gresham, Oregon and Hillsboro, Oregon.

On a single-storey roof or a ground mount, yes: purified water and a soft brush on a water-fed pole from the ground, on a cool morning, no soap and no pressure washer. On a two-storey or steep roof, or anything that would put you on the panels, hire a pro. Our DIY guide covers the method and the gear.