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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.
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AfterFast, Reliable Solar Battery Storage & Backup Across Keller
A solar battery in Keller holds 10 to 13.5 kilowatt-hours of stored power and typically costs between $9,500 and $16,500 installed before tax credits. Most Keller homes pair a battery with existing solar to ride through Oncor outages and avoid buying expensive evening power. You can call (877) 550-6892 and reach a live person any hour, any day, and get a straight answer on whether a battery makes sense for your house. We know the rooflines, the HOA rules, and the rates in Keller because we work here constantly.
Gus Petrakis has been running Solar Battery Storage & Backup work from his DFW shop for years, and his own crew does every install in Keller. No subs. No call center. The name on the work is the name on the building.
Why Gus’s Solar Is Keller’s Preferred Solar Battery Storage & Backup Company
Keller homeowners tend to ask hard questions before signing anything, and we respect that. Gus Petrakis quotes year-25 numbers off your actual utility bill, not a glossy brochure figure. Bring him a bill, he’ll bring you the math. Then he tells you to take two weeks and think about it. The price will be the same. If a salesman needs an answer tonight, the answer is no, and that rule has earned us a loyal following across Keller.
The 90-Day Done Right Promise applies to every battery job we do in Keller. If something isn’t right, Gus comes back and makes it right. In writing, on every contract. Calls are answered by a live person 24/7, not a voicemail tree, and when you call about a Keller install, you are talking to the same team that will show up on your roof.
We also keep relationships with local Keller HOA management companies and understand the restrictions many communities in 76244 and 76248 enforce. That local knowledge saves you weeks of back-and-forth and denied applications. Background-checked, uniformed technicians pull up in a marked truck. You know who is at your door before they ring the bell.
Our Solar Battery Storage & Backup Services in Keller
Tesla Powerwall Installation
The Tesla Powerwall 3 holds 13.5 kWh and pairs well with large Keller homes in 2,500 to 4,500 square foot ranges. A single Powerwall in Keller typically runs $11,000 to $14,500 installed before incentives. Two Powerwalls cover whole-home backup for most of the larger homes we see off Keller Parkway and along Johnson Road, especially where air conditioners pull heavy startup loads in August.
Enphase IQ Battery Installation
Enphase IQ Battery 5P units come in 5 kWh modules, which lets us right-size storage for smaller townhomes and patio homes in Keller without paying for capacity you’ll never use. A single 5P with installation in Keller lands around $7,500 to $9,000, and adding a second module runs $6,000 to $7,500. Enphase integrates cleanly with existing Enphase microinverter systems, which are common on Keller’s fragmented hipped rooflines.
Whole-Home Backup Power
Keller sits in hail alley, and spring storms knock out power in pockets of 76248 around the Tarrant County line more often than people remember until the lights go out. Whole-home backup with two to three batteries runs $22,000 to $38,000 in Keller depending on panel count and load needs. We model your actual usage from your bill so the system covers what you actually run, not what a sales script guesses.
Battery Retrofit for Existing Solar
Many Keller homes already have solar from the 2010s build-out, and adding a battery to an older system is very common. Retrofitting a 10 kWh class battery to an existing Keller array runs $9,800 to $13,500. The key is a load-side tap and accurate monitoring configuration so the battery actually discharges when Oncor’s time-of-use window hits. We also handle Solar Panel Cleaning in Keller when we’re already on the roof for a retrofit.
Time-of-Use and NEM 3.0 Optimization
Texas deregulation means your Keller battery’s economic value depends on which retail electric provider you choose, since Oncor’s wires carry the power but the buyback rate comes from the REP. Some plans in Keller offer 1:1 buyback for exported solar; others pay avoided cost, which is pennies. We walk every customer through REP selection before finalizing system size, because the same array in Keller can pay back in 7 years or 15 years depending on that one choice.
Battery Replacement and Expansion
If an aging battery from an earlier install is losing capacity, or you want to add a second unit to a single-battery system, we handle it. Replacement runs $6,000 to $9,500 for most 10 kWh class units in Keller, and expansion pricing mirrors the per-module numbers above. We also install EV Charger Installation in Keller on the same panel upgrade where it makes sense.
What happens when you call
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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 Keller
We stock firmware, gateway parts, and troubleshooting gear for Tesla, Enphase, SolarEdge, and FranklinWH, so when a Keller customer has a battery issue we are not waiting a week on a part from California. If your existing system uses Qcells, REC, or SunPower panels, we service those arrays too. Our bench techs keep common replacement components in the DFW shop, which means a faster fix for Keller homes when a gateway drops offline or a charge controller fails.
Common Solar Battery Storage & Backup Problems We See in Keller Homes
- HOA-installed rear-array compromises that starve the battery. Keller’s rear-slope arrays, pushed off street-facing facades by HOA rules, often produce 15 to 25 percent less than a south-facing array would. We see customers whose battery never fully charges in winter because the array was designed for aesthetics first, output second.
- Hail damage to battery enclosures and gateway boxes. North Texas hail hits Keller multiple times per decade, and while panels rated to IEC 61215 Class 4 survive, the wall-mounted battery/gateway enclosures and conduit runs often take the brunt. We’ve replaced cracked gateway housings in Keller after storms that left the panels untouched.
- Grid-sensing faults during summer flicker events. Keller sits on Oncor’s North Texas grid, where summer heat pushes load hard and momentary outages or brownouts cause battery inverters to trip on grid-quality faults. The fix is usually a firmware update and threshold adjustment to match the local line conditions we see across 76244 and 76248.
- Undersized batteries for 2,500-plus square foot homes. Most Keller residences built between roughly 1993 and 2015 are large, brick-veneer tract homes. A single 10 kWh battery will not carry two AC units through a 4-hour outage. We frequently expand one-battery systems to two after the first real outage test.
Pricing for Solar Battery Storage & Backup in Keller, TX
Here’s what Keller homeowners can expect in 2026. Single 5 kWh Enphase IQ 5P install: $7,500 to $9,000. Single Tesla Powerwall 3: $11,000 to $16,500. Retrofitting a 10 kWh class battery to existing solar: $9,800 to $13,500. Whole-home backup with two to three batteries: $22,000 to $38,000. The 30 percent federal tax credit applies to battery projects, and we file the paperwork correctly. No trip charge inside our own county, and free second opinions on any written estimate you bring us. Call (877) 550-6892 for an exact quote with your bill in hand.
We Also Serve Cities Near Keller
Our crews handle solar battery work across North Tarrant County. Homeowners in Watauga, North Richland Hills, Roanoke, and Saginaw get the same live-answer phone line and 90-Day Done Right Promise. If your city is adjacent to Keller, call us and we will quote it honestly.
Serving Keller, TX - Our Local Coverage Area
We’re based in the Keller 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 Keller
We typically reach Keller homes the same day for battery system faults, and often within 4 hours for urgent backup failures. A live person answers (877) 550-6892 at any hour, and scheduling is coordinated from our Dallas-Fort Worth office. Call for the quickest dispatch.
Yes, we cover all of Keller including 76244 and 76248, from the Hidden Lakes and Marshall Ridge areas to neighborhoods off Bear Creek Parkway and Keller-Haslet Road. If you are within Keller city limits, we’re there.
Keller pricing is roughly in line with the rest of Tarrant County; a Tesla Powerwall 3 runs $11,000 to $16,500 installed, and an Enphase IQ 5P runs $7,500 to $9,000. The bigger variable is whether your Keller HOA forces a rear-array layout that requires more panels to hit the same output.
Our Keller battery work carries the manufacturer’s standard warranty plus Gus’s 90-Day Done Right Promise in writing. If the install is not right, Gus makes it right. That guarantee is specific to our company and does not come from a national outfit.
Often yes. Call (877) 550-6892 and we will schedule a site visit to your Keller home, walk the roofline, check your panel age, and give you a written number. Estimates are free, and we’ll tell you to take two weeks to think about it.
Contact Gus’s Solar for Battery Storage in Keller
If you live in Keller and you are tired of paying for evening power or sweating through outage season, call (877) 550-6892. A live person answers. We will quote a battery system off your actual utility bill, explain what your Keller HOA will approve, and stand behind the work with our 90-Day Done Right Promise. No pressure, no overnight decisions, no disappearing act. Just Gus’s crew, a fair number, and a system that works when the grid doesn’t.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Keller and North Tarrant County.