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Fast, Reliable Solar Battery Storage & Backup Across Claremont
Solar battery storage in Claremont runs between $12,000 and $18,500 for a single Tesla Powerwall or Enphase IQ Battery installed, before the 30% federal tax credit. Most Claremont homes need us out within two to five business days for an estimate, and full installations typically happen inside three weeks. If you’re tired of watching your solar panels produce power you can’t use at night or during an outage, call us at (877) 550-6892 and we’ll walk through what a battery would actually do on your specific bill.
Claremont is a different animal from the rest of the Inland Valley. The tree canopy changes everything about how a battery gets sized and programmed. We’ve spent years working around the oaks and jacarandas that make this city what it is, and we’ve learned that a battery plan that works in Pomona will underperform here if you don’t account for partial shade and foothill terrain. That’s exactly the kind of thing we measure before we quote anything.
Why Gus’s Solar Is Claremont’s Preferred Solar Battery Storage & Backup Company
Gus Petrakis founded this company in 2011 and put his own name on the truck. That’s not a marketing line. When you call our office, a live person answers. When something needs fixing after the install, Gus comes back himself. Claremont homeowners tell us the same two things again and again: they were burned by a door-knocker who quoted one number then changed it, and they want somebody local enough to look in the eye at the farmers market.
Our Solar Battery Storage & Backup team handles everything from panel-level diagnostics to full battery retrofits on existing systems. We work with Tesla, Enphase, and FranklinWH equipment primarily in Claremont because those brands hold up best under the specific conditions here: heavy AC loads, partial shade, and long summer heat spells. Our reviews from Claremont customers consistently mention two things: the quote matched the final invoice and the crew showed up when they said they would.
We stock common replacement parts and battery components locally, which means we’re not waiting on a warehouse three states away when your system throws an error code in July. Response time to Claremont neighborhoods is typically same-day or next-day for service calls. For new battery installations, we schedule estimates within a week and keep you posted on every step.
What Makes Us Different in Claremont
We quote the year-25 output, not the day-one brochure number. That matters more in Claremont than almost anywhere else in the Valley because your production curve shifts with the tree canopy. We model your expected output using actual shade data from your roofline and the trees around it, then we show you the math on paper before you sign anything. If a salesman needs an answer tonight, the answer is no. And our price won’t change if you take two weeks to think about it.
Our Solar Battery Storage & Backup Services in Claremont
Battery Retrofit for Existing Solar
Most Claremont homes with solar were built before batteries were common. A retrofit adds storage to a system that’s already producing, and in this city it’s the single most requested service we offer. The challenge here is that many pre-2019 systems used string inverters that don’t play well with partial shade. We routinely pair existing panels with Enphase IQ Batteries and microinverters to solve exactly that Claremont-specific problem. Our field crews know the older Craftsman homes near the Village and the mid-century ranches throughout the residential streets, and we’ll tell you honestly whether your current inverter can support a battery or needs replacing.

Time-of-Use & NEM 3.0 Optimization
NEM 3.0 changed the economics of solar in Claremont. Under the old rules, your panels earned near-retail credit for every kWh sent to the grid. Under the new export rates, midday credits are worth pennies; it’s the 4-9 p.m. window that pays. A battery lets you bank your own power and discharge it during that evening peak. We program your battery’s TOU profile around your actual SCE rate schedule and your home’s real load pattern, not a generic template. On a north-side foothill street near Claremont Wilderness Park, our crew retrofitted an Enphase IQ Battery onto a 2018 system whose east-facing panels were losing early-morning production to the San Gabriel foothills. We reconfigured the battery’s TOU profile to charge from midday surplus and discharge during SCE’s 4-9 p.m. peak window, turning that customer’s true-up statement from a $900 charge into a $40 credit. That’s the kind of result we aim for on every Claremont job.

Tesla Powerwall Installation
A single Tesla Powerwall in Claremont typically runs $13,500 to $16,000 installed. Two Powerwalls run $22,000 to $28,000. For most Claremont homes, one Powerwall covers critical circuits like the refrigerator, router, a few lights, and a garage door opener – but not whole-home AC. If you want to run central air through an August afternoon, you’re looking at two batteries minimum. We’ll pull your actual usage data and show you what a Powerwall can and can’t keep running, so you don’t discover the limits during the first heat wave.

Enphase IQ Battery Installation
Enphase IQ Batteries are the most common choice for Claremont homes with partial shade. Because Enphase pairs each panel with its own microinverter, your system produces more usable power when jacarandas throw dappled shade across the roof at 2 p.m. A single IQ Battery 5P runs about $12,000 to $15,000 installed in Claremont; an IQ Battery 10T runs $16,000 to $19,000. For homes near the Village with protected trees on all sides, we often recommend Enphase over string-inverter battery systems because the panel-level production data makes it far easier to diagnose a shaded panel versus a failing one.

Whole-Home Backup Power
Whole-home backup in Claremont means keeping your 100°F+ summer afternoons livable. A full-home setup typically requires at least two batteries and an upgraded electrical panel. We’ll do a load calculation on your actual appliances, not a guess. For most mid-century ranch homes here, whole-home backup runs $24,000 to $34,000 installed after the panel work. It’s a real investment, but for homeowners who’ve lived through a PSPS outage with food spoiling and no AC, the math is simple.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Claremont
We install and service Tesla Powerwall, Enphase, and FranklinWH battery systems across Claremont. These three brands cover the range of what Claremont homes actually need: Tesla for straight power capacity, Enphase for shade-tolerant panel-level management, and FranklinWH for homes that want a modular system they can expand later. We keep parts and firmware support for all three in our local inventory, which means when a Claremont customer calls with a battery that won’t hold charge, we can usually be on-site with the right component the same day. You will not hear us push a brand because of a distributor rebate. We push the brand that fits your roof, your trees, and your bill.
Common Solar Battery Storage & Backup Problems We See in Claremont Homes
- Undersized battery drained by evening AC loads. Homes that hit 100°F+ in July and August routinely drain a single Powerwall before the 9 p.m. peak ends. The result: you’re still pulling from the grid when rates are highest, and the backup you bought for outages is partially depleted when the grid actually fails. We check your historical usage before recommending a battery count.
- 100-amp electrical panels blocking interconnection. Pre-WWII Craftsman bungalows near the Village and 1950s ranch homes throughout Claremont often have 100-amp panels that can’t pass SCE’s interconnection requirements for battery storage. This adds $3,500 to $6,000 and a few weeks to the project. We flag it in the first estimate so you’re not surprised at week three.
- Unpredictable winter production from protected parkway trees. North-side homes with city-planted oak and jacaranda canopies lose significant production from November through February. Homeowners who skip a battery often underestimate their true offset and overdraw at night. A properly sized battery smooths those seasonal swings.
- Detached workshops and garages left out of critical load panels. Many Claremont homes have detached workshops or oversized garage doors on separate circuits. When we install a battery, we map every critical load – including the garage door opener, the well pump if you have one, and any workshop tools you rely on – before we finalize the backup panel. Missing these is a common regret after the first outage.
Pricing for Solar Battery Storage & Backup in Claremont, CA
Here’s what we currently see across Claremont’s market. A single Enphase IQ Battery 5P installed runs $12,000 to $15,000. A Tesla Powerwall 3 installed runs $13,500 to $16,000. A FranklinWH aGate plus one aPower runs $14,000 to $17,000. Retrofitting a battery onto an existing solar system adds $1,000 to $2,500 depending on whether we need to replace the inverter or add microinverters. Whole-home backup with two batteries and a panel upgrade typically lands between $24,000 and $34,000. These are installed prices before the 30% federal tax credit.
What moves the number in Claremont specifically is tree shade and panel age. A 100-amp panel upgrade adds real cost, as does rewiring detached structures. We give you a written quote that matches the final invoice. No signature wanted tonight. Bring me a bill, I’ll bring you the math. Call (877) 550-6892 for a free estimate.
We Also Serve Cities Near Claremont
Gus’s Solar serves the entire eastern San Gabriel Valley. If you’re in Montclair, La Verne, Upland, or Pomona, we provide the same Solar Battery Storage & Backup in Claremont level of service throughout the surrounding communities. Our crews work the whole corridor, so scheduling is straightforward and response times stay short.
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
Claremont’s ‘City of Trees’ ordinance protects mature oaks and jacarandas, which means your solar array produces less consistent power than an identical system in Pomona. You need a slightly larger battery to compensate for the partial shading that panel-level microinverters can’t fully offset. In practical terms, a Claremont home that would need a 10 kWh battery in Pomona often needs 13-15 kWh here to achieve the same backup duration. We model your actual shade before recommending a size. Call (877) 550-6892 and we’ll run the numbers on your roof specifically.
Yes, in almost all cases. Pre-NEM 3.0 systems with string inverters can usually be retrofitted with an Enphase battery by adding microinverters or replacing the string inverter, though this adds cost. Tesla Powerwalls are also compatible with most existing inverters via AC coupling. What changes is how much your system takes advantage of battery storage: pre-NEM 3.0 systems earn near-retail export rates, so a battery’s payback comes mostly from backup protection rather than rate arbitrage. We’ll tell you honestly whether a battery pencils out on your existing system before you spend anything.
Usually not. SCE requires a main service panel rated for the combined solar and battery load, and most 100-amp panels fail that test. A 200-amp panel upgrade in Claremont runs $3,500 to $6,000 and adds two to four weeks to the project timeline. Some homes can avoid the upgrade by installing a smaller battery with a load-shedding smart panel, but that limits what you can back up. We’ll tell you which path fits your home and budget during the estimate.
We measure actual solar production data from your existing system or model your roof’s irradiance using aerial shade analysis that includes your specific trees. North-side Claremont streets near the foothills lose significant morning production to terrain elevation, and the parkway canopy adds another layer of shade in winter. Our payback calculation uses your real utility bill and your real production curve, not a regional average. That’s why our year-one numbers tend to hold up at year five. Call (877) 550-6892 for a free estimate and we’ll show you the worksheet.
Yes, if you tell us before we design the backup panel. Detached workshops and garage door openers often sit on separate circuits, and if they’re not included in the critical load panel, they won’t get power during an outage. We map every circuit that matters to you – including well pumps, workshop tools, and that oversized garage door – before we install anything. A single battery can typically handle a garage door opener and modest workshop loads, but heavy machinery like welders or compressors will likely require a second battery.
If you have more questions about solar battery storage in Claremont, call us at (877) 550-6892. A live person answers, and we’ll give you straight answers without pressure.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Claremont since 2011.






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