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.
Before
After
Before
After
Before
AfterFast, Reliable Solar Panel Cleaning Across Kentfield
Solar panel cleaning in Kentfield usually runs $180 to $340 for a typical residential array, and most of our Kentfield jobs are completed in a single visit. If you’ve noticed your Enphase or SolarEdge production numbers dipping month over month and the panels look dull under the redwoods, the fix is usually a soft-brush wash and deionized rinse, not a new inverter. Call Gus’s Solar at (877) 550-6892 and we’ll give you a straight number before anyone sets foot on your roof.
We know Kentfield’s narrow valley, its ridgelines, and the way bay laurel sap settles on glass. That local knowledge is why homeowners from Kent Woodlands to the flatlands off College Avenue call us instead of a generic outfit that treats every roof the same. If your array sits under mature redwoods or catches winter shade from Baltimore Canyon’s slopes, you need someone who understands what that soiling is actually costing you in lost production, and we do.
Key Takeaways:
- Typical residential solar panel cleaning in Kentfield: $180-$340, same-day or next-day scheduling available.
- Redwood duff and bay laurel sap hardens on panels and resists rain, cutting production more in shaded Kentfield than in sunnier Marin towns.
- We service every major brand, including Panasonic, Enphase, SolarEdge, and SunPower.
- Free estimates; a live person answers the phone around the clock at (877) 550-6892.
Why Gus’s Solar Is Kentfield’s Preferred Solar Panel Cleaning Company
Gus Petrakis founded Gus’s Solar in 2011, and he’s never handed the work off to a sub. The crew that shows up in Kentfield is Gus’s own, background-checked and in uniform, and the name on the truck is the same name you’ll see at the hardware store. That matters when someone’s walking your roofline and working around panels that cost real money. Our reputation in Kentfield is built on showing up when we say we will and doing the job without drama.
Response time to Kentfield is straightforward: if you call in the morning, we can usually be there the same afternoon or the next day. For scheduled cleanings, we book in advance and remind you before the visit. We don’t run a call center, and we don’t route your call through a ticketing portal. When you dial (877) 550-6892, a person answers.
Our Solar Panel Cleaning team knows the difference between a flatland ranch home off Sir Francis Drake Boulevard and a multi-pitch custom build in the Kent Woodlands hills. The rooflines are different, the soiling sources are different, and the production expectations are different. That’s why we don’t quote a generic price over the phone without knowing what we’re dealing with, and why we always offer a free estimate before you commit to anything. Take two weeks to think about it. The price will be the same.
Our Solar Panel Cleaning Services in Kentfield
Residential Panel Cleaning
Most Kentfield homes we clean fall into two categories: the 1950s-1970s ranches in the flatlands and the larger custom builds in Kent Woodlands. Both have the same basic need, but the access and pitch differ. We use soft-brush heads and deionized water only, no pressure washing, because panel glass and frame seals don’t respond well to high PSI. A typical residential cleaning in Kentfield runs $180 to $280 for a 20-30 panel array, depending on roof pitch and accessibility.
Commercial Array Cleaning
Schools, small offices, and multi-unit properties along the College Avenue corridor call us for scheduled commercial cleanings. These arrays are usually larger, often ground-mounted or on low-slope roofs, and the pricing reflects square footage rather than panel count. Commercial cleanings in Kentfield typically start around $400 and go up based on array size and water access. We’ll send a crew lead to walk the site and give you a written number before we schedule the work.
Bird & Critter Guard Installation
Pigeons and squirrels are a real problem in Kentfield, especially where oak and redwood canopies provide cover right at the roofline. Birds nest under panels and leave droppings that bake onto the glass; squirrels chew wiring and nest in the gaps. We install galvanized mesh critter guards that wrap the array perimeter, and we do it during the same visit as a cleaning whenever possible. Guard installation for a typical residential array in Kentfield runs $600 to $1,200 depending on linear footage and roof access.
Debris & Soiling Removal
Redwood duff, bay laurel sap, pollen, and the fine dust that drifts down from the ridgelines all settle on Kentfield panels. Rain rinses some of it, but what remains, especially the sap, hardens and resists weather. Our debris and soiling removal service is a deep clean for arrays that have gone six months or more without attention. We inspect each panel as we go and flag any cracking, delamination, or hot spots. This service runs $220 to $340 for most Kentfield homes.
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 Kentfield
We work on every panel and inverter brand you’re likely to have on a Kentfield roof. Panasonic and Canadian Solar panels are common in this area, and we see FranklinWH batteries paired with them more often as homeowners add storage. Enphase microinverters show up constantly, and we know how to read their per-panel production data to pinpoint which modules are underperforming due to soiling versus something mechanical. Since we’re based nearby, we don’t have to order parts from across the country and make you wait. If a component needs replacing, we can usually source it fast and have your system back to full production quickly.
Common Solar Panel Cleaning Problems We See in Kentfield Homes
- Hardened bay laurel sap on glass. Bay laurels are everywhere in Kentfield, and their sap drifts onto panels and cures in the valley heat. Once hardened, rain won’t touch it, and it can cut a single panel’s output by several percentage points. Soft-brush washing with deionized water removes it without scratching the glass.
- Redwood duff accumulating along lower module edges. Mature redwoods shed constantly, and on Kentfield’s multi-pitch rooflines the duff collects where panels meet the frame. It traps moisture, blocks light, and can promote micro-cracking at the edges when it bakes on. We clear it during every cleaning.
- Bird nesting under panels in the spring. Pigeons and starlings find the gap under panels irresistible, especially near the creek corridors and wooded yards in Kent Woodlands. Nests and droppings are a sanitation issue and a production drag. Our critter guards stop the cycle.
- Winter soiling on shaded arrays. When the sun angle drops around 38°N latitude in November, Kentfield’s ridgelines squeeze the effective solar window to a few hours. A thin layer of soiling during those months cuts production more than the same film in July. We recommend a pre-winter cleaning for any array in a shaded pocket.
Pricing for Solar Panel Cleaning in Kentfield, CA
Here’s what Kentfield homeowners can expect to pay in 2026. A standard residential cleaning for a 20-30 panel array runs $180 to $280. Larger or steeper arrays, especially in the Kent Woodlands hills, run $280 to $340. Debris and soiling removal, which is a deeper clean, falls in the $220 to $340 range. Critter guard installation starts around $600 and goes up with perimeter footage. Commercial arrays are quoted per site, usually starting at $400.
What moves the price in Kentfield: roof pitch, the number of stories, water access, and how much hardened sap or duff we’re dealing with. We offer a free estimate for every job, and we honor the Senior and Veteran 10% discount on cleaning and guard work with no expiration. Call (877) 550-6892 and we’ll give you the number before we schedule anything. No signature wanted tonight.
We Also Serve Cities Near Kentfield
We work throughout Solar Panel Cleaning in Kentfield and the surrounding Marin communities. If you’re in Larkspur, San Anselmo, Corte Madera, or Fairfax, the same crew covers your roof with the same pricing and the same 90-Day Done Right Promise in writing.
Serving Kentfield, CA - Our Local Coverage Area
We’re based in the Kentfield 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 Kentfield
A heavily soiled array under Kentfield’s tree canopy can lose 8% to 15% of its production compared to a clean array, and the loss compounds in winter when the low sun angle and ridgeline shading already compress your solar window. On a 7 kW system, a 10% loss over a year can mean several hundred dollars in higher true-up charges. Call (877) 550-6892 for a production assessment and a free cleaning estimate.
For cleaning, no. The Kent Woodlands Property Owners Association architectural review process applies to installation and placement changes, not routine maintenance. If you’re adding critter guards, which alter the visual profile of the array, a quick call to the KWPOA is a smart precaution. We can tell you what to ask.
Yes, but only if soiling is the actual problem. Microinverters like Enphase units optimize each panel independently, but they can’t create light that isn’t reaching the glass. When both shading and soiling cut into a panel’s irradiance, cleaning removes one variable and lets the microinverter work with the light that remains. We read per-panel production data before and after every Kentfield cleaning to show you the difference.
Most Kentfield homes with mature redwoods or bay laurels near the roofline need cleaning twice a year: once in late spring after pollen and bird nesting season, and once in late October or early November before the winter solar window closes. Homes in the flatter, less wooded parts of the 94914 zip code can often get away with one cleaning a year. We’ll recommend a schedule based on your specific canopy and production data.
Yes, and we prefer to. We bring the mesh, cut it to length, and wrap the array perimeter while the crew is already on the roof with the proper safety gear. Combining the jobs saves you a second trip charge and gets the array clean and protected in one afternoon. Call (877) 550-6892 and ask for a combined quote.
When you’re ready for a straight answer on solar panel cleaning in Kentfield, call Gus’s Solar at (877) 550-6892. We’ll tell you what your array needs, what it costs, and when we can be there. Free estimates, no pressure, and a live person on the line whenever you call.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Kentfield with honest solar work since 2011.