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

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

Professional solar services in San Jose, CA. Licensed & insured. Same-day and after-hours emergency service available.

866+
Cities Served
Fast
Emergency Response
Licensed & Insured Fast Response Free Estimates All Brands Satisfaction Guarantee
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

Fast, Reliable Solar Battery Storage & Backup Across Claremont

Solar battery storage in Claremont runs $9,500 to $18,500 for a typical residential install, and most homes we serve in the 91711 zip code pair a single 13.5 kWh battery with an existing solar array. We’re in Claremont weekly, and our crews know the tree-shaded streets, the older Craftsman bungalows near the Village, and the mid-century ranches that climb toward the foothills. When your power goes out during a summer heat wave or a PSPS event, you want a battery that’s sized right for your actual usage, not a brochure number. Call (877) 550-6892 and Gus’s Solar will give you the straight math on backup power for your Claremont home.

Call (877) 550-6892

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

Gus Petrakis founded Gus’s Solar in 2011 and never handed the work off to a sub. His own crew does every install across Claremont, from the jacaranda-lined streets west of the Village to the foothill neighborhoods north of Base Line Road. That matters here more than most places, because Claremont’s battery jobs are never cookie-cutter. Our Solar Battery Storage & Backup team has retrofitted batteries onto systems we installed a decade ago and onto systems installed by companies that no longer answer the phone. We quote the year-25 output, not the day-one brochure number, and we tell every Claremont homeowner the same thing: take two weeks, think about it, the price will be the same.

We answer our own phone. A live person picks up 24/7, not a voicemail or a ticketing portal. When a Claremont customer calls at 9 p.m. because their battery threw an error code, they talk to someone who can actually help. Every job carries the 90-Day Done Right Promise in writing. If it’s not right, Gus comes back and makes it right. That’s the whole deal, and it’s why our Claremont customers keep our number saved.

Our Solar Battery Storage & Backup Services in Claremont

Tesla Powerwall Installation

A Tesla Powerwall 3 installation in Claremont typically runs $11,000 to $15,000 before incentives, including the gateway and necessary electrical work. On the north-side foothill streets near Claremont Wilderness Park, we regularly see homes where protected parkway oaks cut into roof production, and a Powerwall’s smart controls let the battery recharge during whatever sun the array does capture. We handle the full install, the interconnection paperwork, and the programming so it actually performs in this specific climate.

Tesla Powerwall Installation

Enphase IQ Battery Installation

Enphase IQ batteries start around $9,500 to $12,000 for a 5 kWh unit in Claremont, and they’re a strong fit for the many homes here with partial-shade arrays and microinverter systems already on the roof. Because Claremont’s tree preservation ordinance keeps mature oaks and jacarandas standing, the per-panel optimization Enphase offers matters more here than in sunnier, treeless places. We size the battery to your real usage patterns, not a generic template.

Enphase IQ Battery Installation

Whole-Home Backup Power

Whole-home backup in Claremont means accounting for summer AC loads that push well past what a single battery can island. The math is simple: a 3-ton AC unit draws roughly 3,500 watts running, and your battery needs to start that compressor, not just run it. A two-battery setup for whole-home backup in Claremont runs $18,000 to $28,000 installed. We’ll show you exactly what circuits you can realistically back up, and we’ll be honest if a single battery should cover only your refrigerator, lights, and a few outlets.

Whole-Home Backup Power

Battery Retrofit for Existing Solar

Most of the battery work we do in Claremont is retrofitting homes that already have solar. Systems installed before 2020 were nearly always sized without storage in mind, and the NEM 3.0 rules changed the math entirely. A battery retrofit in Claremont runs $10,000 to $16,000 depending on your existing inverter and panel setup. On one north-side foothill street near the Wilderness Park, our crew retrofitted a Tesla Powerwall 3 onto a 2018 system for a mid-century ranch where protected parkway oaks had degraded the east-facing array production by 18%. We configured the battery for self-consumption mode using NEM 3.0 time-of-use arbitrage, and that homeowner now runs AC through peak-rate evenings without drawing from SCE’s grid. That’s the kind of fix that only comes from knowing the local conditions.

Battery Retrofit for Existing Solar
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.

Trusted Brands We Service in Claremont

We install and service batteries from Tesla, Enphase, and FranklinWH, and we keep common parts stocked for fast turnaround on Claremont service calls. If your Enphase battery throws a fault mid-summer, we don’t want you waiting two weeks on a warehouse shipment. Our techs are background-checked and uniformed, and they’re the same crew that installed the system, not a rotating cast of subcontractors. We work with the equipment that actually holds up in Claremont’s heat, because a battery that underperforms at 105°F is a battery we won’t put on your wall.

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

  • Undersized 100-amp panels on pre-WWII Craftsman bungalows: Many homes near the Village and the historic districts still run 100-amp electrical services, which overload when a whole-home backup battery tries to island during a summer outage with AC running. We’ll tell you upfront if a panel upgrade to 200 amps is required before the battery can be interconnected, and we won’t bury that cost in the fine print.
  • Protected canopy shade degrading battery recharge rates: Claremont’s tree preservation ordinance keeps mature oaks and jacarandas standing, which means a battery that recharges fully by 2 p.m. on a treeless lot in Pomona might not hit full charge until 5 p.m. on a shaded Claremont street. That changes battery sizing, and we design around it.
  • Rapid shutdown compliance on steep, tree-shaded roof planes: The steeper rooflines on north-side foothill homes and the partial shading from protected street trees complicate inverter and battery placement, sometimes forcing longer DC runs that reduce overall system efficiency. We plan routing and conduit placement before we start, so you’re not surprised by an extra day of labor.
  • Evening battery drain when HVAC and pool pumps kick on after sunset: Claremont’s summer heat means AC runs well past sundown, and homes near the Village’s jacaranda streets with pool pumps on timers often drain a battery faster than the homeowner expected. We program time-of-use settings around your actual household schedule, not a default profile, so you don’t hit empty during a PSPS event.

Pricing for Solar Battery Storage & Backup in Claremont, CA

A single-battery install in Claremont runs $9,500 to $15,000. A two-battery whole-home setup runs $18,000 to $28,000. Battery retrofit onto an existing solar system runs $10,000 to $16,000, depending on whether your inverter needs replacement or your panel needs an upgrade. What moves the number: your panel’s amperage, the distance from your meter to the battery location, whether your existing inverter is battery-compatible, and how many circuits you want backed up. We quote off your actual utility bill and your actual usage history, not a regional average. Bring me a bill, and I’ll bring you the math. Estimates are free, and there’s no trip charge inside our own county. Call (877) 550-6892 and we’ll come out to your Claremont home, walk the roof and the panel, and hand you a number that won’t change when the install happens.

We Also Serve Cities Near Claremont

Gus’s Solar serves Claremont and the surrounding communities, including Montclair, La Verne, Upland, and Pomona. If your home sits on the border of 91711 or your street straddles two city lines, call us and we’ll sort it out. Scheduling and dispatch are coordinated from our Los Angeles office, and crews serve Claremont locally.

Serving Claremont, CA - Our Local Coverage Area

We’re based in the Claremont 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 Claremont

Call Gus’s Solar for Solar Battery Storage & Backup in Claremont

If you’re tired of losing power during heat waves, tired of true-up surprise bills, or just want to know what a battery would actually cost for your specific Claremont home, call (877) 550-6892. A live person answers, not a voicemail. We’ll schedule a free estimate, walk your roof and panel, and hand you a number anchored to your real utility bill. Take two weeks. Think about it. The price will be the same. If a salesman needs an answer tonight, the answer is no. Gus Petrakis puts his name on the work, and it’s been that way since 2011.

Written by Gus Petrakis, Owner at Gus’s Solar, serving Claremont 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.

Licensed & Insured

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

Upfront Pricing

No hidden fees, no surprises. You approve the price before any work begins.

Guaranteed Work

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

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 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.

★★★★★

"He modelled it on my actual bill and the current export rates rather than the old ones, and told me plainly that the payback was longer than the door knockers had claimed. Then it came in about where he said it would."

Octavius Redmond · Verified customer
★★★★★

"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 · Verified customer
★★★★★

"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 · Verified customer

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

Ready for Solar in San Jose?

Call now for a free estimate - or request one below. Licensed, insured, and here with fast after-hours help in San Jose.

(877) 550-6892

Request a Free Estimate in San Jose

Tell us about your solar needs - we'll respond within the hour.

By clicking submit, you confirm you have read our Privacy Policy and authorize us to contact you by call, text, or email regarding your service needs, including from the affiliated professionals who may take on the job.

Prefer to text? Send a Text
Areas We Serve
Call Now - 24/7 Dispatch