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.
Solar Services in Kensington, CA
If you live in Kensington, you already know the drill: steep lot, plenty of afternoon shade, and an electric bill that climbs every summer when the marine layer does not cooperate. You call a solar company, they quote a number off a satellite image, and then the county plan check throws a fire-code setback at the design that nobody mentioned. We are Gus’s Solar, and we have been through Kensington’s particular permitting path enough times to know where the snags live. If you are looking for Solar Panel Installation in Kensington, we are the local team that answers the phone. Call (877) 550-6892 and you will get Gus or someone on his crew, not a call center. We are local, we answer the phone, and we will give you honest numbers based on your actual usage, not a glossy brochure estimate.
Key takeaways: Solar in Kensington means Contra Costa County permits, hillside roof planes, and real shade from mature oaks. Our estimates factor in the year-25 output, not the day-one sticker number. We do not want a signature tonight. Take two weeks. Think about it. The price will be the same.
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.
Why Kensington Homeowners Choose Gus’s Solar
Gus Petrakis started this company in 2011 and put his own name on the truck. That is not a marketing line. When something goes wrong on a Kensington hillside install, Gus is the one who comes back, because his reputation lives in the same neighborhoods you do. We are not an out-of-state outfit with a rotating cast of subcontractors. Gus’s own crew does the work, background-checked and uniformed, and they flash every roof penetration properly. No hand-offs to a third string crew.
Residents up around Arlington Avenue and down near the Kensington Circle have dealt with the door-knockers who need an answer tonight. We tell people the opposite. If a salesman needs an answer tonight, the answer is no. We quote the year-25 output, not the day-one brochure number. That is the L.O.C.A.L. code we work by: Local roots, On time, Community first, Accountable, Loyal. You will see us at the hardware store. You can call and ask for Gus by name after the system is live and he will actually pick up.
Solar Services We Offer in Kensington
Solar Panel Installation
Kensington’s 1920s and 1930s Craftsman and Tudor homes have complex rooflines that demand a custom racking plan, not a cookie-cutter layout. We design systems around your actual roof planes, your afternoon shade pattern, and the county’s fire-code setbacks. Learn more about our Solar Panel Installation in Kensington.

Solar Battery Storage & Backup
If you live in the Wildland Urban Interface zone, you already know what fire season does to grid reliability. A battery system with FranklinWH or another trusted brand keeps your refrigerator and medical devices running when the power is cut. Learn more about our Solar Battery Storage & Backup in Kensington.

Solar Panel Cleaning
Kensington sits under eucalyptus and oak canopy, and eucalyptus sap plus coastal dust does not rinse off with rain. Panels that were sized for clean glass lose real production when a film builds up over a dry summer. Learn more about our Solar Panel Cleaning in Kensington.

EV Charger Installation
Many Kensington homes still run on original 60 to 100 amp service panels. Adding an EV Charger Installation - Kensington often means a panel upgrade first, and the county wants to see that in the same permit set as the solar. We handle both so the plan check goes through the first time.

Solar Panel Maintenance & Monitoring
A hillside system with microinverters needs someone watching the production numbers, not just a warranty buried in a drawer. Gus monitors your system after install and is the one who calls you when a panel drops offline.

Solar Panel Repair
Whether it is a cracked panel from a falling branch, a squirrel-chewed wire, or an inverter that stopped talking to the app, we come out, diagnose it, and fix it. We also offer a free second opinion on any written estimate you have from another company. Standing offer: $40 off any repair over $200.

Commercial Solar Installation
Schools, small offices, and mixed-use buildings in Kensington have different structural and fire-code requirements than houses. We handle the engineering and the county paperwork for commercial rooftops too.

Neighborhoods We Serve in Kensington
We work throughout the 94530 zip code, from the flats near Arlington Avenue up into the hillside streets and down toward Colusa Circle and along Kensington Park Road. Typical response time for a service call in Kensington is same day or next morning, depending on when you call. We do not charge a trip fee inside our own county.
- Arlington Avenue corridor
- Colusa Circle area
- Kensington Park Road hillside
- The Uplands and surrounding streets
Why Kensington’s Climate & Housing Affect Solar
Kensington is an unincorporated Contra Costa County community, which means every solar permit goes through the county building department, not Berkeley’s or El Cerrito’s city offices. That is a different set of inspectors, a different timeline, and a different code interpretation on things like fire-code setbacks and WUI provisions. If a company tells you they have done “a bunch of installs in the East Bay” but has never pulled a county permit in Kensington, they are about to learn on your roof and on your schedule.
Then there is the shade. Kensington’s hillside lots are dense with mature oaks and eucalyptus, and the afternoon marine layer funnels through the Golden Gate and sits right over the ridge during peak summer afternoons. Annual production here runs lower than inland places like Walnut Creek or Concord, and any honest yield estimate has to reflect that. We run a detailed shade-path analysis on every Kensington property and spec microinverters or power optimizers so one shaded panel does not drag down the whole string. We also offer Kensington Solar Panel Cleaning to keep your system performing at its best. That is not an upsell. It is the difference between a system that hits its year-25 numbers and one that quietly underperforms for two decades.
The housing stock compounds the challenge. Most homes were built between the 1920s and 1950s with narrow hillside parcels and multi-plane roofs angled to follow the terrain, not to catch sun. Original 60 to 100 amp electrical service is common, and that panel often needs a full upgrade before a solar-plus-EV-charger system can pass county plan check. We will tell you that on the first visit and put it in the written quote. Bring me a bill, I’ll bring you the math. We build everything off your real usage and current export rates.
Pricing for Solar in Kensington
Smaller hillside homes in Kensington with simple rooflines and no panel upgrade typically start around $16,000 to $22,000 for a grid-tied system before the federal tax credit. Homes with complex multi-plane roofs, a main panel upgrade, and Kensington Solar Battery Storage & Backup run higher, often in the $30,000 to $45,000 range depending on equipment choices. We quote brands like Panasonic, Canadian Solar, JinkoSolar, and FranklinWH. None of those numbers are a phone estimate. We come out, measure the roof, pull your actual utility history, and put a written quote in your hand. The price we quote is the price you pay. No signature wanted tonight, and the offer stands for two weeks. Call (877) 550-6892 for a free estimate, or bring us a competitor’s written quote and we will give you a straight second opinion at no charge.
Service Area - Cities Near Kensington
Besides Kensington, our crews regularly serve El Cerrito, Albany, Richmond, and Berkeley. Same local crew, same county or city permitting knowledge, same live person on the phone at (877) 550-6892.
Serving Kensington, CA - Our Local Coverage Area
We’re based in the Kensington 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 About Solar in Kensington
County plan check for a standard residential solar and panel upgrade in Kensington typically runs 3 to 6 weeks, and inspection scheduling can lag a bit because county inspectors cover a much larger territory than a city inspector does. We build that timeline into your project plan up front and stay on top of the county’s status updates so the process does not stall. Call (877) 550-6892 and we will tell you what current county timelines look like before you commit.
Probably, if your home still has its original 60 to 100 amp service. Adding an EV charger and a solar system to a panel that size usually triggers a county requirement for a 200 amp upgrade. We include that in the written quote rather than springing it on you after the contract is signed.
For a system that is 12 to 15 years old with a failing inverter and degraded panel output, replacement often makes more financial sense than piecemeal repairs, especially with current panel efficiency gains. For newer systems with a single failed component, a targeted repair is almost always cheaper. We will tell you which one you are looking at and quote both ways. The free second opinion on any written estimate applies here too.
The marine layer that sits over the Kensington ridge in summer does reduce afternoon peak output compared to inland Contra Costa, but a properly designed system accounts for that from the beginning. We use real local irradiance data, not a generic California average, and we spec panel and inverter configurations that perform well in indirect light. Your year-25 estimate is built on Kensington conditions, not Phoenix conditions.
Usually yes. For non-emergency repairs we are typically able to be out in Kensington same day or the next morning, and there is no trip charge inside our own county. Call (877) 550-6892 and a live person will answer. If it is after hours, leave a message and Gus will call you back. Not a ticketing portal, not a call center. The owner’s phone rings.
Get a Straight Answer About Solar in Kensington
You have probably had enough of the pressure pitch, the inflated numbers, and the fine print. We do not do any of that. Call (877) 550-6892 and ask for Gus. Bring us your current utility bill and we will show you the math in plain English. You will get a written quote, a realistic timeline for Contra Costa County permitting, and a system designed for Kensington’s shade, terrain, and fire-code requirements. Take two weeks. Think about it. The price will be the same. And if it is not done right, the 90-Day Done Right Promise means Gus comes back and makes it right. In writing, on every job.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Kensington and the surrounding East Bay hills.
What happens when you call
- 1A real person answersNo phone trees - talk to a local solar pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3A background-checked tech heads outLicensed & insured, typically within 1-hour.
- 4You approve before work beginsNothing starts until you say go.
What Kensington Customers Say
"Honest quoting and good workmanship. He is not the cheapest quote I got, by some way, and he told me that himself and explained what the difference bought. I chose him anyway and I am glad."
- Alistair Fennimore"The install itself was excellent and the system performs as modelled. Permitting and the utility interconnection took about four months, most of it out of his hands, though the waiting was still frustrating."
- Marguerite Ostrowski"Told me straight that a battery did not make sense for how we use power and sold me the array without it. He talked himself out of a good deal of money that afternoon."
- Reginald Pontefract






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