Gus's Solar solar team

Solar Services in Cotati - Same-Day Service, Done Right the First Time

✓ Licensed & Insured ⏱ 1-hour response ✓ Free estimates
Call (877) 550-6892
🛡 Licensed & Insured ⏱ 1-hour Response 💲 Upfront Pricing · Free Estimates
Every visit starts with

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

Your own solar system for as low as $79/month*on approved credit; ask for current terms
Worth knowing

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.

Styles & brands we work with

Rooftop solar
Rooftop solar
Battery storage
Battery storage
EV charging
EV charging
Qcells
Qcells
REC
REC
Enphase inverters
Enphase inverters

Before & after – our own jobs

Before - Recent ProjectBeforeAfter - Recent ProjectAfter
Recent Project
Before - Full RestorationBeforeAfter - Full RestorationAfter
Full Restoration
Before - Complete UpgradeBeforeAfter - Complete UpgradeAfter
Complete Upgrade

Solar Services in Cotati, CA

Cotati homeowners call us when they want a straight answer about whether solar actually pencils out on their roof. We serve the whole city, from the hexagonal streets off Old Redwood Highway to the 1960s tract homes near Helen Putnam Park, and a real person answers the phone at (877) 550-6892 whenever you call. Gus Petrakis puts his name on every estimate we write. Bring us your PG&E bill, and we’ll bring you the math built off your actual usage, not a brochure number.

Call (877) 550-6892

If you’re wondering whether solar makes sense in Cotati specifically: it usually does, but the payback math here is different from Santa Rosa or Petaluma. We’ll explain why below.

Need help today?Fast, friendly service and a no-obligation free estimate.

Call (877) 550-6892

What happens when you call

  1. 1
    A real person answersNo phone trees - you reach a local pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched.
  3. 3
    A background-checked tech heads outLicensed & insured, dispatched right away.
  4. 4
    You approve before work beginsNothing starts until you say go.

Why Cotati Homeowners Choose Gus’s Solar

This is a small town, and word gets around. When someone on Cypress Avenue installs a system that underperforms, the neighbors hear about it at the Thursday farmers market on La Plaza. That’s why Gus runs the business the way he does: his own crew does the install, his own name goes on the permit, and he’s the one who shows up if something isn’t right after the job is done. He’s been doing this since 2011, and his phone hasn’t changed.

We’ve installed and serviced systems throughout Cotati, including homes near the downtown plaza district and in the neighborhoods south of Gravenstein Highway. Homeowners in the eastern hills off Madrone Avenue and the flatlands west of Highway 101 have both hired us, and the reviews tell a consistent story: the price quoted is the price paid, the crew shows up on time, and if a panel underperforms a year later, one call brings Gus back. That’s the 90-Day Done Right Promise in writing, and it’s how we’ve kept a clean reputation in Sonoma County since the day we opened.

Solar Services We Offer in Cotati

Solar Panel Installation

We design systems for Cotati’s specific sun profile, which means accounting for the Petaluma Gap marine layer that sits over this city on summer mornings. Every quote uses your actual PG&E bill and a site-specific yield model, never a generic Sonoma County average.

Learn more about our Solar Panel Installation in Cotati.

Solar Panel Installation

Solar Battery Storage & Backup

Cotati sits close enough to the Bay Area fault system that a lot of homeowners here want more than just an offset on their bill; they want the lights on when the grid drops. We install Enphase and FranklinWH battery systems sized to your actual overnight load, not a one-size-fits-all package.

Learn more about our Solar Battery Storage & Backup in Cotati.

Solar Battery Storage & Backup

Solar Panel Cleaning

The marine fog rolling through the Petaluma Gap leaves a film on panels that dust alone never produces in drier inland cities. Annual cleaning in Cotati typically recovers measurable output, especially after the rainy season pushes pollen and road dust onto low-tilt roofs.

Learn more about our Solar Panel Cleaning in Cotati.

Solar Panel Cleaning

EV Charger Installation

Cotati’s compact footprint means most residents charge at home, and we run dedicated circuits for Level 2 chargers alongside solar installs. If your panel’s got room, we’ll tell you; if it doesn’t, we’ll tell you that too.

Learn more about our home services and ask about EV charger work on your estimate call.

EV Charger Installation

Solar Panel Maintenance & Monitoring

Gus monitors the systems he installs. If a string drops offline or an inverter throws a fault, we see it, and you get a call, not a portal notification. For homeowners who bought from an outfit that’s since gone quiet, we also take over monitoring and maintenance on existing systems.

Call (877) 550-6892 and we’ll take a look at what’s already on your roof.

Solar Panel Maintenance & Monitoring

Solar Panel Repair

We repair systems from any manufacturer, including Qcells, REC, SunPower, and Panasonic arrays installed by other companies. If a national installer installed it and vanished when the microinverter failed, that’s exactly the kind of job we take on weekly in Cotati.

Learn more about our solar repair and service work, or call for a straight diagnosis.

Solar Panel Repair

Commercial Solar Installation

For Cotati’s small commercial properties along Gravenstein Highway and near the downtown hexagon, we design flat-roof and carport-mounted systems that respect the city’s compact commercial lots. Same crew, same 90-Day Done Right Promise.

Call (877) 550-6892 for a site walk and a written estimate.

Commercial Solar Installation

Neighborhoods We Serve in Cotati

We cover all of Cotati, 94931. Most of our residential work here is on the 1960s through 1980s tract homes that make up the city’s housing stock, and we know the roof conditions on these builds well enough to tell you on the phone whether a site walk is worth your morning. Typical response time for a Cotati service call is same day or next morning.

  • Downtown plaza district and the hexagonal grid
  • Neighborhoods east of Old Redwood Highway
  • Homes south of Gravenstein Highway
  • The hillside streets off Madrone Avenue

Why Cotati’s Climate & Housing Affect Solar

Cotati sits at the inland end of the Petaluma Gap, a documented wind and marine-fog corridor that pulls cool, moist air from San Francisco Bay straight through town. What that means on your roof is simple: summer mornings in Cotati are often gray and wet with condensation, while summer afternoons clear beautifully. Any installer quoting your production using generic Sonoma County irradiance data is going to overestimate what your system actually makes.

We see it on real systems, not spreadsheets. A south-facing array on a Cotati rooftop produces a noticeably different annual curve than the same array in Santa Rosa seven miles north. That’s because the Gap’s June through August marine layer suppresses peak sun hours right when statewide solar production models assume maximum output. The fix isn’t bigger panels; it’s honest site-specific modeling and, on many Cotati homes, a slightly steeper panel tilt that sheds morning condensation faster and grabs more of the afternoon sun.

There’s also the roof question. Cotati’s residential stock is overwhelmingly 1960s to 1980s composition shingle, and a lot of those roofs are at or near the point where you want a condition assessment before anyone mounts racking. We’ll tell you straight if your roof has five good years left and you’re better off re-roofing first. A national sales crew won’t, because that kills the deal today. Gus would rather lose the job this month than install over a failing deck and own the problem later.

One more Cotati quirk worth knowing: the city’s historic hexagonal street grid, radiating from the downtown plaza, means your address’ stated direction isn’t always your roof’s true orientation. Lots on the angled streets don’t align with compass points the way they do in neighboring grid-city blocks over in Rohnert Park. Our crew pulls a compass on every site walk here, and we account for the actual roofline, not the street sign. It matters more than most installers admit.

Pricing for Solar in Cotati

Here’s the honest range we quote in Cotati, based on current equipment prices and the typical single-story tract home roof in this city:

  • Residential solar panel installation (before federal tax credit): $13,500-$28,000 depending on system size and roof access
  • Battery storage add-on (one battery): $9,000-$15,500 before incentives
  • Panel cleaning (single-story home): $150-$300 depending on array size and roof pitch
  • EV charger installation (dedicated circuit, panel has capacity): $700-$1,800
  • Repair diagnostics and service call: $149 diagnostic, applied to the repair if you hire us. We offer $40 off any repair over $200.

Every one of those numbers gets locked in writing after a site walk. We don’t quote by drone photo and then adjust upward when the roof turns out steeper than the satellite image looked. Bring me a bill, I’ll bring you the math. That’s how we do it in Cotati, and the price will be the same two weeks from now. Take the time. If a salesman needs an answer tonight, the answer is no.

Service Area - Cities Near Cotati

We also serve homeowners in Rohnert Park just north of Cotati, the Roseland neighborhood, Petaluma to the south, and Santa Rosa up the 101 corridor. Same crew, same pricing structure, same live person on the phone.

Serving Cotati, CA - Our Local Coverage Area

We’re based in the Cotati 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 Cotati

Ready to get started? Free estimates · 1-hour response in Cotati
Call (877) 550-6892

What happens when you call

  1. 1
    A real person answersNo phone trees - talk to a local solar pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
  3. 3
    A background-checked tech heads outLicensed & insured, typically within 1-hour.
  4. 4
    You approve before work beginsNothing starts until you say go.

What Cotati Customers Say

★★★★★ 4.8 from 10+ reviews

"Production dropped one spring and I did not even notice. Gus rang me, because he watches the monitoring, and had it sorted the same week."

- Sunita Balakrishnan

"My previous solar company went out of business and left me with an array nobody would touch. Gus took the system over, replaced two dead microinverters, and it has run properly since."

- Ferdinand Kaltenbrunner

"Four different companies knocked on my door in one summer and every one of them wanted a signature that evening. Gus has a shop with his name on it, gave me the numbers on paper, and told me to take a fortnight and think about it."

- Winifred Castellano

How It Works in Cotati

Getting your solar handled is simple and fast.

1

Call or Request a Free Estimate

Tell us about your solar needs and we provide an upfront, transparent quote - no obligation, no hidden fees.

2

Licensed Technician Dispatched

A background-checked, certified technician arrives in Cotati - typically within 30-60 minutes, with parts stocked on the truck.

3

Problem Solved, Guaranteed

We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.

Current Offers

Bring these savings to your next appointment.

10%

10% Off Your First Service Visit

Valid on your first completed service visit with us.

Expires Dec 31, 2026
$40

$40 Off Any Repair Over $200

Expires Dec 31, 2026
Free

Free Second Opinion on Any Written Estimate

Expires Dec 31, 2026
Free

No Trip Charge Inside Our Own County

Expires Dec 31, 2026
10%

Senior & Veteran 10% - Always

Expires Dec 31, 2026

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