Solar panel cleaning in San Diego runs $12 per panel with us, flat. A typical 20-panel home system is $240. A big 35-panel system is $420. No trip fees, no roof surcharges, no guessing. Our service minimum is $300, so smaller systems usually pair the panels with a window cleaning on the same visit.
We're Coastal Clarity, a family-owned exterior cleaning company in La Jolla. Most cost articles you'll find are written by companies that want your phone number before they'll say a price. Here's ours up front, and here's how to decide if it's worth it.
Why per-panel is the honest way to price
Flat "whole house" quotes punish small systems and underprice big ones, so somebody always overpays. Panels are uniform. The work scales with the count. Count your panels from your inverter app or the street, multiply by 12, and that's your price.
What actually gets your panels dirty here
- Marine layer moisture that glues dust into a film
- Salt residue if you're within a couple miles of the water
- Sprinkler overspray, which leaves mineral spots
- Bird droppings, which don't wash off in rain and shade whole cells
- Pollen and fire-season ash
Rain doesn't fix this. Rain rinses loose dust and leaves the film, the same way your car looks worse after a light drizzle.
Is it worth $240?
Panels produce less when they're dirty; a filmed-over system is quietly working below what you paid for. Your own inverter app is the honest test: note this month's output, get the panels cleaned, compare the next sunny week. Many of our customers see the difference on the graph the same day. At $12 a panel, the cleaning usually pays for itself well within the year, and dirty panels age worse, since baked-on mineral spots can etch glass permanently.
How we clean them
Soft brushes and purified, mineral-free water. No soap residue, no pressure washer, no scratched glass, nothing that voids a manufacturer warranty. We work from the roof safely and check your mounting hardware while we're up there.
How often should panels be cleaned in San Diego?
Twice a year for most of San Diego. Quarterly if you're oceanfront, under trees, or near a field. It pairs naturally with window cleaning; most customers book both in one visit.
Solar cleaning cost FAQs
Can I just hose them off?
From the ground, a hose leaves mineral spots that make it worse. From the roof, tap water plus a brush helps but risks the glass and you.
Will cleaning void my warranty?
No. Manufacturers expect cleaning. What voids warranties is pressure washing and abrasives, which we never use.
How long does it take?
Most systems take under an hour.
Is there a minimum?
Yes, $300. Most solar customers bundle a window cleaning on the same visit and clear it easily.
Count your panels and get your free quote, or call (858) 315-1247. More about the service on our solar panel cleaning page.