Solar Panel Cleaning Bellingham, WA

Once a year suits most Bellingham-area arrays, best done in late spring after the pollen has finished. Arrays under conifers, on low-pitch roofs, or on roofs with active moss usually want twice a year, because debris sits on them longer instead of shedding.

No. Rain rinses off loose dust, but it does not remove bonded pollen, sap, bird droppings, or moss, and it leaves behind mineral spotting and dried streaks as it evaporates. Panels on a low-pitch roof shed even less, so debris simply accumulates.

Not the way we clean them. What damages panels is abrasive pads, harsh chemicals, and high-pressure washing, all of which attack the anti-reflective coating and can void a manufacturer’s warranty. We use pure water, low pressure, and soft equipment only.

Yes. Anything sitting on the glass is light that never reaches the cell, and shading from moss or debris on part of a panel affects more than just the shaded patch. We show you the panels before and after rather than quoting a percentage we cannot stand behind.

Usually, yes. Where the roof allows it we clean from the ground with water-fed poles. Where it does not, our crews are licensed and fully insured for roof access. If an array genuinely is not safe to reach, we will tell you that instead of attempting it.

Yes. Ground mounts are straightforward for us, and they tend to pick up splash-back dirt along the lower edge that is worth staying ahead of.

It depends on the number of panels, the roof pitch, and how the array is accessed, so we quote per property rather than posting a number that would be wrong for most people. Getting a quote takes about a minute online.