Solar Battery Storage & Backup in Windsor, CA | Gus’s Solar - Gus's Solar

Solar Battery Storage & Backup in Windsor - Same-Day Service, Done Right the First Time

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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

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Recent Project
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Full Restoration
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Complete Upgrade

Fast, Reliable Solar Battery Storage & Backup Across Windsor

Solar battery storage in Windsor isn’t an add-on anymore. It’s the core of the system. After the 2019 Kincade Fire evacuation and the PSPS shutoffs that followed, Windsor homeowners learned exactly what a dead grid feels like at 2 a.m. A properly sized battery keeps your refrigerator running, your well pump pulling water, and your house lit while the rest of the block sits dark. We’ve been installing battery backup systems in Windsor long enough to know which homes need what, and we quote real numbers off your actual bill, not a brochure. Call (877) 550-6892 and we’ll walk you through it.

Call (877) 550-6892

Why Gus’s Solar Is Windsor’s Preferred Solar Battery Storage & Backup Company

Gus Petrakis started this company in 2011, and he still answers his own phone. That matters in a town like Windsor, where the guy who installed your system might be the same guy you run into at Oliver’s Market on Saturday. We don’t subcontract. Our own background-checked, uniformed crew does every install, from the Lakewood subdivision to the older streets off Old Redwood Highway. When something goes wrong, one call brings Gus back. That’s the 90-Day Done Right Promise, in writing, on every job.

Windsor homeowners talk. They compare notes at the farmers market on the Town Green and at the Windsor Unified School District board meetings. What they say about us is that we show up on time, we quote a price and stick to it, and we don’t ask for a signature tonight. Take two weeks. Think about it. The price will be the same. If a salesman needs an answer tonight, the answer is no. We’re not that kind of company.

Response time to Windsor is measured in how long it takes our truck to get there from the office, not in days of waiting for a dispatcher three states away. A live person answers our phones 24/7, and when you call about a battery that isn’t charging or a system that tripped during a storm, you’ll talk to someone who knows what a PSPS event does to a Windsor home, because we’ve worked through dozens of them out here.

Our Solar Battery Storage & Backup Services in Windsor

Tesla Powerwall Installation

The Tesla Powerwall 3 is the most common battery we install in Windsor, and for good reason. It handles whole-home backup, it’s quiet enough to pass any HOA review, and it pairs cleanly with both new solar and retrofits. Windsor’s Sonoma Clean Power territory means your export credits work differently than PG&E generation customers in Santa Rosa, so we size the Powerwall around your actual consumption patterns from your bill, not a generic estimate. Most Windsor installs take one to two days once permits clear.

Tesla Powerwall Installation

Whole-Home Backup Power

Whole-home backup means you don’t pick and choose which circuits survive an outage. Your refrigerator, your well pump, your HVAC, your internet, your security system. Everything stays on. In Windsor, where PSPS shutoffs can stretch for days, this is the difference between camping in your own house and barely noticing the grid went down. We confirm the inverter’s islanding capability with the utility before we ever pull a permit, because a battery that can’t island during a PSPS event is a very expensive brick.

Whole-Home Backup Power

Battery Retrofit for Existing Solar

Plenty of Windsor homes got panels years ago, before batteries made economic sense. Those systems don’t need to be replaced. We retrofit batteries onto existing arrays all the time, working around the original inverter and wiring as much as possible. With Sonoma Clean Power’s export rates, a retrofit often pays for itself faster than people expect, because storing your own generation beats selling it back at the current credit rate. We’ll pull your system specs, check your roof’s condition, and tell you straight whether a retrofit makes sense for your house.

Battery Retrofit for Existing Solar

Enphase IQ Battery Installation

The Enphase IQ Battery is a solid choice for Windsor homes with Enphase microinverters already on the roof. It’s modular, so we can start with one unit and add capacity later. The IQ battery’s smaller footprint also helps with HOA placement rules in neighborhoods like Lakewood, where the architectural review board wants batteries tucked out of sight or arrayed neatly against a side wall. We handle the ARB paperwork and the design revisions so the process doesn’t stall.

Enphase IQ Battery Installation
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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.

Trusted Brands We Service in Windsor

We work with the industry’s leading equipment brands, and we stock common parts locally so Windsor customers aren’t waiting on a shipment from across the country when a fix is needed. Tesla, Enphase, SolarEdge, SunPower, Qcells, REC, Panasonic, FranklinWH, Canadian Solar, and JinkoSolar are all brands we’re familiar with, and we’ll recommend the right fit for your home rather than whatever we happen to have in the warehouse. For Windsor’s climate, with its strong inland sun and dry summers, Panasonic and FranklinWH batteries have proven especially reliable in our experience.

Common Solar Battery Storage & Backup Problems We See in Windsor Homes

  • HOA architectural review delays. Windsor’s planned subdivisions, particularly Lakewood and the Windsor Oaks area, have CC&Rs that regulate panel placement and battery location. Submitting plans with front-facing panels before ARB review is the single most common reason installs stall out here, and we’ve fixed enough of those situations to know how to avoid them from day one.
  • Batteries that don’t island during PSPS events. Some installers skip the utility confirmation step. That leaves a Windsor homeowner with a battery that works fine on sunny days but won’t disconnect from the grid when PG&E cuts power. We verify islanding capability before install, every time.
  • ROI quotes built on PG&E generation rates. Windsor falls under Sonoma Clean Power, not standard PG&E generation. An installer who quotes your payback using default PG&E export pricing is giving you numbers that don’t match your actual bill. We build the math off Sonoma Clean Power’s export pricing for Windsor specifically. Bring me a bill, I’ll bring you the math.
  • Undersized systems from panels-only thinking. Companies that lead with panels and mention batteries as an afterthought consistently undersize the battery for a Windsor home’s actual backup needs. After back-to-back PSPS events, most Windsor homeowners want their well pump and refrigerator covered, not just lights. We size the battery for the outage you’re planning around, not the one that looks good in a brochure.

Pricing for Solar Battery Storage & Backup in Windsor, CA

A Tesla Powerwall 3 installation in Windsor typically runs $12,500 to $16,500 before incentives, depending on whether it’s paired with new solar or retrofitted to an existing array. Enphase IQ Battery installs usually land between $9,000 and $14,000 for a comparable usable capacity, with the final number driven by how many units you need and whether your existing electrical panel needs upgrading. A full whole-home backup setup with load management can push into the $18,000 to $22,000 range for larger Windsor homes with well pumps and electric HVAC. Battery retrofit projects without new panels typically come in between $11,000 and $15,000. These are real Windsor numbers, built off real Windsor bills. The price we quote is the price you pay. Free estimates, no trip charge inside our own county, and a senior and veteran 10% discount that never expires. Call (877) 550-6892 for an exact number.

We Also Serve Cities Near Windsor

Our crews work across Sonoma County, including Windsor, Larkfield-Wikiup, Healdsburg, Santa Rosa, and Roseland. If you’re just outside Windsor’s 95492 zip code, call us anyway. We’ll let you know if we can help, and there’s no trip charge inside our own county. Our full Solar Battery Storage & Backup services are available across the North Bay.

Serving Windsor, CA - Our Local Coverage Area

We’re based in the Windsor 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 Battery Storage & Backup in Windsor

Get a Straight Answer About Battery Storage in Windsor

If you live in Windsor and you’re tired of conflicting numbers, vague promises, and sales pressure, call Gus’s Solar. We’ll pull up your actual usage, run the math against Sonoma Clean Power’s export pricing, and tell you what a battery system will really cost and really do. No signature tonight, no disappearing act after the install. Just a locally owned company with Gus’s name on the truck and a live person answering the phone 24/7. Call (877) 550-6892 for a free estimate.

Written by Gus Petrakis, Owner at Gus’s Solar, serving Windsor and Sonoma County since 2011.

Why San Jose Chooses Gus's Solar

We set the standard for solar in San Jose.

30-60 Min Response

Fast dispatch across San Jose. Same-day and after-hours emergency service available.

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Fully certified technicians who meet all local and state licensing requirements.

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Every repair and installation is backed by our workmanship warranty and satisfaction guarantee.

How It Works in San Jose

Getting your solar handled is simple and fast.

1

Call or Request a Free Estimate

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2

Licensed Technician Dispatched

A background-checked, certified technician arrives in San Jose - 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.

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 San Jose Customers Say

Trusted by homeowners across San Jose and surrounding areas.

★★★★★

"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 · Verified customer
★★★★★

"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 · Verified customer
★★★★★

"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 · Verified customer

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