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Fast, Reliable Solar Battery Storage & Backup Across Kirby
Solar battery storage in Kirby, TX typically runs $11,500-$17,900 for a single battery install, and $9,800-$13,500 when retrofitted onto an existing array. Most Kirby homes we serve can be up and running within 3-5 business days after permits clear. We know the streets here, the panel upgrades most older houses need, and the CPS Energy interconnection process that ties it all together. Call (877) 550-6892 for a straight quote off your actual bill.
Kirby is its own little city tucked entirely inside San Antonio’s arms, and that quirk changes how battery jobs get permitted. We pull permits through Kirby’s own city hall, not San Antonio’s Development Services Department. Out-of-area crews routinely get that wrong, and the delay lands on the homeowner. It never does here, because Gus Petrakis has been hand-walking these applications since we started doing Solar Battery Storage & Backup work in the enclave.
Why Gus’s Solar Is Kirby’s Preferred Solar Battery Storage & Backup Company
Kirby homeowners have plenty of reasons to be skeptical of solar salespeople. That’s fine by us. Gus Petrakis puts his name on the truck, his phone number on the quote, and his own crew on the roof. When you call to ask about your battery, a live person answers. Day or night. Not a voicemail box, not a ticketing portal, and certainly not a call center in another state.
We’ve been locally owned since 2011, and the difference shows up in the details. It’s knowing that most houses east of Old Seguin Road still carry original 100-amp panels that need a service upgrade before a battery can pass inspection. It’s knowing that the CPS Energy interconnection queue moves differently for Kirby residents because of the dual-permitting path. It’s quoting a number and not changing it after the site visit. And it’s the 90-Day Done Right Promise in writing on every job: if it’s not right, Gus makes it right.
Kirby neighbors talk. We hear about it at the hardware store, at the post office on Agarita Avenue, at the little league fields near Friendship Park. That’s the kind of reputation we’ve built here, one battery install at a time, with background-checked and uniformed techs who treat your house like it’s on their own block. Because for a lot of us, it is.
Our Solar Battery Storage & Backup Services in Kirby
Tesla Powerwall Installation
A Tesla Powerwall 3 install in Kirby runs $13,500-$17,900 for the first unit, including gateway and integration with your existing or new array. These units hold 13.5 kWh of storage, which covers the essentials through a typical CPS Energy outage and then some. Given Kirby’s spot in Texas hail alley, we mount them in the garage or on a shaded east wall rather than the south-facing exterior, keeping them out of the worst storm paths.

Enphase IQ Battery Installation
Enphase IQ batteries run $11,500-$15,500 in Kirby for the 5P system, and because they’re modular, you can stack capacity as your needs grow. They pair cleanly with Enphase microinverters, which are common on the mid-century tract homes around the 78244 ZIP code. This is often the best first battery for a smaller, 1960s-era ranch on a tight lot, where a single 5 kWh unit covers the refrigerator, a window unit, lights, and the modem.

Whole-Home Backup Power
If you want to run the entire house during a CPS Energy outage, including the air conditioner, expect $22,000-$34,000 in Kirby for a two-battery setup sized to your actual load. That price includes the necessary 200-amp main panel upgrade if your home still has its original 100-amp service, which is more common here than in newer suburban builds. The humidity that settles over Kirby in August means whole-home cooling backup isn’t a luxury; it’s the primary reason people go bigger.

Battery Retrofit for Existing Solar
Already have panels? Adding storage runs $9,800-$13,500 in Kirby, with most quotes landing closer to the middle when no main panel upgrade is required. Retrofit work on Kirby’s smaller lots means we often use garage wall space creatively, and because so many homes here share nearly identical roof pitches and orientations from the original east-side tract developers, the site assessment moves fast. You’ll also want Solar Panel Cleaning in Kirby scheduled around the same time so your panels are performing at full output when the battery starts charging in earnest.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Kirby
We install and service Tesla, Enphase, and FranklinWH battery systems, which covers the overwhelming majority of what’s already on Kirby roofs and what’s being quoted right now. Because we’re a local shop, we keep common replacement parts and firmware tools on hand, which means when a battery in the 78244 ZIP code throws an error code, we’re usually fixing it the same day rather than waiting on a shipment from California. We also maintain and expand existing systems, including adding a second battery to an existing FranklinWH or Tesla setup as your household’s load grows. If you’re adding an EV to the mix, pairing your battery with EV Charger Installation in Kirby makes a lot of sense: charge the car from stored solar overnight instead of pulling from the grid during peak CPS Energy rates.
Common Solar Battery Storage & Backup Problems We See in Kirby Homes
- 100-amp panel bottlenecks. A lot of Kirby homes were built between the late 1940s and the 1970s, and many still carry original 100-amp main panels. A battery can’t pass inspection when the service entrance is undersized, so a panel upgrade to 200-amp is a near-routine add-on cost we flag on the very first site visit.
- Hail damage to inverters and disconnect boxes. Texas hail alley doesn’t just threaten glass, it also abuses the outdoor electronics on your solar setup. We see cracked disconnect enclosures and water intrusion in inverters after big spring storms through Kirby, and we check for those before any battery is tied in.
- Faulty wiring from previous installers. Not every solar company that worked Kirby did the job to code. We regularly find undersized conductors and poorly torqued connections from earlier installs, particularly on homes where a national outfit came through with a door-knocker years ago. A battery retrofit is often when those issues come to light.
- Inverter-to-battery communication failures. Older Enphase and SolarEdge inverters sometimes struggle to communicate with newer battery management systems, especially on Kirby’s original 1960s-era electrical layouts. We’re familiar with the exact firmware mismatches on these mid-century tract homes and can usually resolve them without replacing the whole stack.
Pricing for Solar Battery Storage & Backup in Kirby, TX
Here’s what battery work actually costs in Kirby, not a brochure number.
| Service | Typical Kirby Price Range |
|---|---|
| Tesla Powerwall 3 install (first unit) | $13,500 - $17,900 |
| Enphase IQ Battery 5P install | $11,500 - $15,500 |
| Whole-home backup (two batteries) | $22,000 - $34,000 |
| Battery retrofit to existing solar | $9,800 - $13,500 |
| 200-amp main panel upgrade (if needed) | $2,800 - $4,200 |
These ranges reflect what we quote in the 78244 ZIP code, where panel upgrades are common and lot sizes mean most installs go on garage walls. The price we quote is the price you pay. Bring us a bill, we’ll bring you the math. Call (877) 550-6892 for an exact number built off your actual usage and CPS Energy rate plan.
We Also Serve Cities Near Kirby
Our Kirby crews also cover Windcrest, Converse, Live Oak, and Universal City, so if you’re just over the line on the northeast side, call us. We schedule by ZIP code, not by territory drama. Same crew, same Solar Battery Storage & Backup work, same no-pressure quoting.
Serving Kirby, TX - Our Local Coverage Area
We’re based in the Kirby 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 Kirby
Most Kirby installs happen within 3-5 business days after the permit clears. The city hall in Kirby issues its own permits, which adds a few days versus San Antonio, but we handle that dual-track process and can give you a firm date when you call. Call (877) 550-6892 and we’ll check the current permit queue.
Yes, we cover the entire 78244 ZIP code, including the streets around Old Seguin Road, the neighborhoods near Friendship Park, and the homes along Ackerman Road. If you’re inside Kirby’s city limits, we’re there.
Yes. If your battery throws a fault or your system goes dark, call (877) 550-6892 and a live person answers 24/7. We’ll have someone to your Kirby address that day, not next week.
The equipment cost is the same either way, but Kirby permitting fees run a bit lower than San Antonio’s since it’s a smaller municipality. The real cost difference is whether your home needs a 100-amp to 200-amp panel upgrade, which is more common in Kirby’s older stock than in newer San Antonio subdivisions.
Every battery install carries our 90-Day Done Right Promise in writing: if it’s not right, Gus makes it right. Manufacturer warranties on the hardware itself run 10-12 years depending on brand. And one call brings Gus back, not a customer service ticket. For specifics on your setup, call (877) 550-6892 and we’ll walk you through it.
Get a Straight Quote From Gus’s Solar in Kirby
If a salesman needs an answer tonight, the answer is no. Take two weeks. Think about it. The price will be the same. We’ve been serving local communities for over 29 years under Gus’s name, and that’s not the kind of thing you risk on a rushed decision. Call (877) 550-6892 for a free estimate, or bring us your CPS Energy bill and we’ll build the math off your real usage, not a brochure. We quote the year-25 output, not the day-one number. L.O.C.A.L. values: Local roots, On time, Community first, Accountable, Loyal. That’s how we’ve worked Kirby since day one.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Kirby, TX.






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