Free bill analysis - bring a power bill, get the production math for your actual roof, panel brands like Qcells and REC compared side by side
If the pitch starts at your door and ends with "sign tonight for the special," sleep on it. The sun will still be there tomorrow; so will we.
Fast, Reliable Solar Panel Cleaning Across Exeter
Solar panel cleaning in Exeter typically runs $150-$450 for a standard residential array, and most jobs are done same week. If your panels have gone a season or two without a wash, especially anywhere near the citrus groves, you’re likely losing 10-20% of your production to soiling. We’re a locally owned crew that answers the phone 24/7, and we know exactly what Exeter dust does to a panel. Call (877) 550-6892 for a free estimate, no signature tonight, no pressure ever.
Why Gus’s Solar Is Exeter’s Preferred Solar Panel Cleaning Company
We’ve been cleaning panels in Exeter long enough to know the difference between ordinary dust and the cement-like film that forms when citrus bloom residue meets tule fog. That’s the kind of detail that matters when you’re trying to get your system back to full output. Our crews work off Highway 65 and know the back roads through the orange groves, so getting to your place isn’t a navigation puzzle for us.
Gus Petrakis put his name on this company in 2011, and he still answers his own phone. That’s not a marketing line; it’s just how we operate. When you call about panel cleaning in Exeter, you talk to a person who knows the area, not a call center three states away. Our Solar Panel Cleaning team is background-checked, uniformed, and showed up on schedule. Every job is backed by the 90-Day Done Right Promise in writing. If something isn’t right, one call brings Gus back.
Exeter customers call us for the same reason they shop at the local hardware store instead of ordering everything online: they want a face they’ll see again. Gus’s name is on the truck, on the building, and on every invoice. That’s the L.O.C.A.L. code we work by: Local roots, On time, Community first, Accountable, Loyal. Not a slogan. Just how a business should run when the owner lives in the same Valley as you.
Our Solar Panel Cleaning Services in Exeter
Residential Panel Cleaning
Most Exeter homes have 20-40 panels on composition-shingle roofs with low pitch lines. We use deionized water and soft-bristle brushes that won’t scratch the glass or wear down older shingles. A standard residential wash in Exeter takes 45-90 minutes on site, and we’re careful around older ranch homes built in the 1950s through the 1970s where flashing and roof penetrations need a lighter touch.

Commercial Array Cleaning
This is where Exeter’s agriculture changes the math. Packing sheds, cold storage facilities, and ag supply yards with roof-mounted arrays collect a mix of orchard dust, diesel soot from truck traffic, and leaf litter. We clean commercial systems of 100 panels or more, and we schedule work around your operating hours so the cold storage never loses power. On flat-roof packing sheds, low-tilt panels bake that grime on in triple-digit heat, which is exactly why a hose-off doesn’t work. You need deionized water, agitation, and someone who knows not to walk on the wrong seams of a 40-year-old flat roof.

Bird & Critter Guard Installation
Ground squirrels, rabbits, and pigeons are a real problem for Exeter solar systems. Ground-mounted arrays on ranch properties attract squirrels that nest under the panels and chew through microinverter and rapid-shutdown wiring. We install galvanized mesh guards around the array perimeter and under the panel edges. This is a common add-on after a cleaning, because once you see what a squirrel can do to Enphase wiring, you don’t want to see it twice.

Debris & Soiling Removal
After harvest season, panels around the groves get coated with dust that combines with morning fog moisture and forms a film. Left alone through January, that film hardens into something closer to stucco than dust. We remove caked-on soiling with a careful presoak, then a deionized rinse. We also clear leaf litter, bird droppings, and anything else the Valley wind pushes onto your array.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Exeter
We clean and maintain systems built on Tesla, Enphase, SolarEdge, FranklinWH, and every major panel brand on the market. When a cleaning reveals a panel that’s underperforming beyond what soiling explains, we can check the microinverter or optimizer on the spot. Our monitoring knowledge covers Enphase and SolarEdge platforms, so we can cross-reference your production numbers with what we see on the roof. That’s the difference between a wash and an actual diagnostic visit.
Common Solar Panel Cleaning Problems We See in Exeter Homes
- Citrus dust and tule fog creating a cement-like film. Bloom season in the groves east of town throws fine organic dust into the air. When December fog rolls in and keeps panels damp for days, that dust sets into a layer that plain rain won’t remove.
- Ground squirrels and rabbits chewing wiring under arrays. We see this constantly on rural properties off Road 204 and Spruce Avenue. The fix is a proper critter guard, not just a cleaning. Squirrels will return to the same nesting spot year after year.
- Low-pitch panel tilt on older ranch homes. Exeter’s housing stock from the 1940s-1980s often has shallow roof slopes, which means panels don’t shed debris naturally. Pollen, dust, and bird droppings accumulate faster than on steeper roofs.
- Flat-roof packing shed soiling. Commercial arrays on flat structures around the ag districts collect diesel particulates from truck traffic plus leaf litter from nearby trees. In 100°F heat, that bakes into a layer that needs mechanical agitation, not just a rinse.
Pricing for Solar Panel Cleaning in Exeter, CA
A standard residential panel cleaning in Exeter runs $150-$300 for arrays up to 25 panels. Larger residential systems of 26-45 panels typically cost $275-$450. Commercial arrays and ground-mounted ranch systems start around $400 and go up based on panel count, accessibility, and how much caked-on soiling needs presoak time. Bird and critter guard installation adds $10-$15 per linear foot of guard material, installed. If you bring us a written estimate from another company, we’ll give you a free second opinion. Seniors and veterans get 10% off every job, no expiration date. Call (877) 550-6892 for an exact quote. The price we quote is the price you pay.
We Also Serve Cities Near Exeter
Gus’s Solar provides Solar Panel Cleaning in Exeter and the surrounding Tulare County communities. Our crews regularly work in Farmersville, Lindsay, Woodlake, and Visalia. Same scheduling process, same pricing, same crew. If you’re just outside the city limits, call us and we’ll tell you straight whether we can get there this week.
Serving Exeter, CA - Our Local Coverage Area
We’re based in the Exeter area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Solar Panel Cleaning in Exeter
We’ve measured production shortfalls of 10-20% on Exeter systems that haven’t been cleaned in a year, with the worst cases on properties directly adjacent to active groves or packing operations. Dust from bloom season, harvest traffic, and fruit-fly bait applications settles on panels and cuts light transmission week by week. On a 42-panel ground-mount array off Road 204, we documented a 14% production shortfall from a caked-on mix of fog moisture, orchard dust, and bait residue before cleaning. Call (877) 550-6892 and we’ll come out to look at your numbers and your panels.
No, it usually means the opposite. Fog keeps panels damp, and that moisture turns accumulated dust into a hardened film. By February, when the fog burns off and you finally get clear sunny days, you want the panels already clean so you capture every hour of production. Waiting until spring means losing your best late-winter generation weeks to soiling that could’ve been removed in an afternoon.
Yes. We train our crew to walk on the roof deck, not the panel rails, and we use wide-footprint footwear for lower pressure on older shingles. Exeter’s ranch homes from the 1940s through the early 1980s often have composition shingle roofs that are more brittle than newer installations. We inspect for loose granules and fragile spots before starting, and we never drag hoses across the ridge. If the roof is too far gone for safe foot traffic, we’ll tell you before we ever set up a ladder.
Yes. Ground arrays near irrigation pumps are simple to clean while the system stays live. We use deionized water and soft brushes that don’t require shutting down your array, and we keep clear of any exposed conduit or junction boxes. If we spot wiring damage from squirrels or rabbits while we’re down there, we’ll flag it and give you a price to fix it on the spot. That’s the advantage of having someone on the ground who knows what to look for.
You should see recovery on your monitoring app the same day, with full production restored as soon as the panels dry and the sun is on them. On a clear day, that’s usually within an hour of finishing the rinse. We suggest comparing your production the day before cleaning to the day after, same weather conditions. If the numbers don’t bounce back the way they should, call us and we’ll come back out. That’s covered under the 90-Day Done Right Promise.
The Exeter Soiling Pattern No One Talks About
Here’s what makes Exeter different from every coastal and foothill city in California: this is a working citrus town, and the air itself carries agricultural life. You can’t copy-paste a panel cleaning schedule from Oxnard or Rancho Cucamonga onto an Exeter system and expect it to hold. The ‘Orange City’ nickname isn’t just a historical footnote. Active groves, packing sheds, and ag traffic are still operating all around town, in the 93221 zip code, along Spruce Avenue, and out toward Road 204. That means dust you can taste in the air during bloom and harvest, plus a fog season that keeps everything wet for weeks.
We cleaned a 42-panel ground-mount array on a citrus ranch off Road 204 where the owner runs two irrigation pumps and a small cold-storage shed. He called because his Enphase app showed production dropping for three weeks straight with no obvious weather reason. We tested and found a 14% shortfall from caked-on soiling. The panels sat at ground level, thirty yards from an active packing area, with sprinkler overspray from the irrigation system adding to the mix every morning. Fog moisture held the dust in place, and by December it was a hard film. Our crew used deionized water and soft brushes, then installed a bird-and-critter guard around the array because ground squirrels were nesting under the panels and chewing the rapid-shutdown wiring. That ranch array needed more than a wash. It needed someone who understood the whole picture: ag dust, fog, irrigation, and wildlife.
That’s the information gain this page gives you that a generic solar cleaning page won’t: Exeter’s soiling pattern is citrus dust plus tule fog plus irrigation overspray plus ground-squirrel pressure. Coastal cities deal with salt haze and sea spray. Foothill cities deal with pine pollen and wildfire ash. Exeter deals with an agricultural microclimate that bakes crud onto panels over weeks, not months. Our cleaning process, our scheduling recommendations, and our critter-guard approach are built around that reality.
Call Gus’s Solar for Panel Cleaning in Exeter
If your panels have been sitting under a season of orchard dust and fog, don’t wait until the spring sun arrives to find out you’ve been losing production for weeks. Call (877) 550-6892 for a free estimate on panel cleaning, critter guard installation, or any part of your solar system that isn’t performing the way it should. A live person answers 24/7. Take two weeks to think about it if you want. The price will be the same. If a salesman needs an answer tonight, the answer is no. That’s not who we are.
Written by Gus Petrakis, owner of Gus’s Solar, serving Exeter and the Central Valley since 2011.






Before
After
Before
After
Before
After