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Fast, Reliable Solar Battery Storage & Backup Across Southlake
Adding battery storage to your Southlake solar system typically costs between $9,500 and $16,800 before federal tax credits, depending on whether you’re retrofitting a single Tesla Powerwall or building out a whole-home backup system. Most installs take our crew one to two days, and we stock the common equipment locally so we’re not waiting on a shipment from out of state. Gus Petrakis has been answering his own phone since 2011, and if you’re in the 76092 zip code, a live person picks up when you call (877) 550-6892.
Southlake isn’t a market where cookie-cutter solar math works. Between the HOAs, the multi-pitch luxury rooflines, and Oncor’s deregulated rate structure, a battery that works in Trophy Club can underperform in Timarron. Our Solar Battery Storage & Backup team designs around what’s actually on your roof – not what a brochure says you should have.
Why Gus’s Solar Is Southlake’s Preferred Solar Battery Storage & Backup Company
Most of our Southlake work comes from referrals. A neighbor off Continental Boulevard gets a battery installed, sees it keep the AC running during a July outage, and tells two friends in Timarron and one over near Southlake Town Square. That’s how we’ve built our reputation here – one finished job at a time, with Gus’s name and license number on every quote.
What Southlake homeowners tell us they value most is that we don’t disappear. The same crew that installs your battery is the crew that comes back if firmware acts up three years later. We don’t hand work off to subcontractors, and we don’t route your service call through a call center. You call, Gus or someone on his own team answers, and we’re honest about when we can be there. For most of Southlake, that’s same-day for diagnostics and usually within a week for a scheduled install.
We’ve worked on homes off Peytonville Avenue and throughout the gated communities along Southlake Boulevard. We know the architectural review process here. We know which neighborhoods have concrete tile roofs that need specialized mounting hardware. And we know that a battery system quoted without analyzing your actual Oncor bill is just a guess with a warranty attached.
Our Solar Battery Storage & Backup Services in Southlake
We focus on the work that matters most for Southlake homes: retrofitting batteries onto existing solar arrays, building whole-home backup that actually covers your HVAC load, and programming systems around the reality of deregulated electricity pricing. Here’s what that looks like.
Tesla Powerwall Installation
A single Tesla Powerwall 3 in Southlake runs $10,500 to $13,800 installed, before the 30% federal tax credit. For most of the executive homes we work on – 4,000 to 6,000 square feet with two HVAC zones – one Powerwall covers essential circuits but not the whole house. We’ll be straight with you about that before you spend a dollar. Two Powerwalls give most Southlake homes true whole-home capability through a summer outage.

Enphase IQ Battery Installation
If your Southlake home already runs on Enphase microinverters, the IQ Battery 5P is a clean fit – no separate inverter needed, and the integration is native. Installed pricing typically runs $6,800 to $9,200 for a single 5P unit. We’ve installed these on homes throughout Southlake where the HOA restricted panel placement and the homeowner wanted a battery that communicates seamlessly with existing Enphase monitoring.

Whole-Home Backup Power
Whole-home backup in Southlake means sizing for a Texas summer, not a mild spring day. Your two AC units, pool pump, refrigerators, and whatever else your family runs during a 100°F outage at 6 p.m. – that’s the load calculation that matters. We build the backup load profile off your actual usage, not a square-footage estimate. For most Southlake homes, that’s two to three batteries, with installed pricing typically $22,000 to $38,000 depending on configuration and whether we’re adding a smart load panel.

Battery Retrofit for Existing Solar
This is our most common Southlake request. You bought solar five or eight years ago, the panels work fine, but you have zero backup when storms knock out the grid. Retrofitting a battery onto an existing system in Southlake runs $8,500 to $14,500 depending on your inverter setup and whether we need to add a critical loads panel. We see a lot of older SolarEdge and string-inverter systems in Southlake that need a firmware update and sometimes a communications gateway before a Powerwall will talk to them correctly. We handle all of that in-house.

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.
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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 Southlake
We’re certified with Tesla and Enphase, and we regularly work with FranklinWH’s aGate system for homeowners who want a non-Tesla option with strong whole-home capability. We also service and maintain existing systems built on Panasonic and SolarEdge components. Because we’re local, we carry common replacement parts and communication gateways in our own inventory, which means faster turnaround for Southlake customers who need a repair or expansion. No waiting on a container from a distribution hub.
Common Solar Battery Storage & Backup Problems We See in Southlake Homes
Our service calls in Southlake cluster around a handful of recurring issues – most of them tied to how homes and systems get built here. If any of these sound familiar, call us before the next outage.
- Evening battery drain from east-facing arrays. When a Southlake HOA forces panels onto rear or east-facing slopes, the array stops producing meaningful power by late afternoon. Come 6 p.m. with two AC units running in 100°F heat, the battery drains fast – and there’s no solar left to refill it. We address this by expanding storage capacity, adding a second battery, or programming grid-charging during Oncor’s off-peak window. Often all three.
- False rapid-shutdown alarms after grid outages. We see this most frequently on multi-pitch Southlake rooflines where an older SolarEdge inverter predates the battery. When the grid drops and the battery takes over, the inverter’s rapid shutdown protocol can trip and kill panel production even after power returns. A firmware update solves it – but only if someone catches it. Most national installers won’t come back to check. We do.
- Batteries sized off square footage instead of true-up statements. A Southlake homeowner brings us a system that a door-to-door outfit quoted off the home’s square footage, then wonders why the battery never covers the evening TOU charges. Southlake sits in Oncor territory with deregulated retail choice – your buyback rate depends on the provider you picked. Without analyzing your actual bill, battery sizing is a shot in the dark. We always start with your true-up statement from the past 12 months.
- Concrete and clay tile roof complications. Southlake has a lot of premium roofing materials – concrete tile profiles in particular. Battery retrofits on these homes often require tile hooks or specialized flashing for new conduit runs and the battery’s wall mounting point. A crew that only knows composition shingle will either crack your tiles or walk away from the job. Our team works with tile regularly across Southlake.
Pricing for Solar Battery Storage & Backup in Southlake, TX
| Service | Typical Southlake Price Range |
|---|---|
| Tesla Powerwall 3 (single unit, installed) | $10,500 – $13,800 |
| Enphase IQ Battery 5P (single unit, installed) | $6,800 – $9,200 |
| FranklinWH aGate + aPower (single battery) | $11,000 – $14,000 |
| Whole-home backup (2-3 batteries + load panel) | $22,000 – $38,000 |
| Battery retrofit on existing solar | $8,500 – $14,500 |
| Battery expansion (adding a second unit) | $7,000 – $11,000 |
These are installed prices before the 30% federal tax credit. What moves the number in Southlake: roof material (tile costs more to mount properly), your inverter vintage, whether you need a main panel upgrade, and how many HVAC zones you want backed up. We quote off your actual bill and your actual house. Bring me a bill, I’ll bring you the math. Estimates are free – call (877) 550-6892 and we’ll schedule a time that works for you.
Southlake’s HOA Reality and What It Means for Battery Sizing
Here’s what makes Southlake unique, and it’s something we’ve learned the hard way over years of installs here. Texas Property Code gives HOAs the authority to restrict panel placement to slopes that aren’t visible from the street. In master-planned communities like Timarron – and basically across the entirety of Southlake’s heavily deed-restricted housing stock – that means panels end up on rear or east-facing roof sections. East-facing panels perform fine in the morning, but they drop off hard by late afternoon. They never see the full western sun that a south-facing array would catch.
Why does that matter for your battery? Because a battery only stores what your panels produce. An east-facing array on a Southlake home stops generating meaningful power by 5 p.m. in summer – right when your AC is working hardest and the grid is at peak stress. The battery has to carry a heavier evening load than it would if your panels faced south. That changes everything: how many batteries you need, whether grid-charging makes financial sense, and what your backup load profile should prioritize. A national installer who sells you a one-size-fits-all battery package hasn’t done this math. We have, on dozens of Southlake homes.
The Timarron Retrofit: What a Custom Battery Job Actually Looks Like
In Timarron, we retrofitted a Tesla Powerwall 3 onto an existing 12 kW Enphase system where the HOA had restricted panels to the east-facing hip roof. Our crew reconfigured the backup loads to prioritize the homeowner’s two HVAC zones and pool pump, and because the array’s azimuth limited late-day production, we programmed the battery to charge from the grid during Oncor’s off-peak window – ensuring the house stayed fully powered through the evening peak without drawing from the panels’ reduced output. That’s not a clever trick. It’s just what actually works here.
We’ve done similar work throughout Southlake – off Peytonville Avenue, around Southlake Town Square, and in the gated communities off Dove Road. Every one of these jobs required custom engineering because the roof, the HOA, and the deregulated rate environment all pulled in different directions. That’s the work we’re built for.
We Also Serve Cities Near Southlake
Our crew works throughout the northeast Tarrant County area. You’ll find us in Colleyville, Grapevine, Roanoke, and Trophy Club – same crew, same Solar Battery Storage & Backup in Southlake standards, same direct line to Gus. Dispatch and scheduling are coordinated from our Dallas-Fort Worth office, and we’re in one of those neighboring cities most weeks already.
Serving Southlake, TX - Our Local Coverage Area
We’re based in the Southlake 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 Southlake
Yes. The HOA’s authority under Texas Property Code generally covers panel placement, not battery placement – batteries mount on a garage wall or exterior wall and typically don’t require architectural review in most Southlake communities. We’ll still confirm with your HOA’s current guidelines before we pull permits. The bigger issue is sizing: a rear or east-facing array produces less late-day power, so your battery may need to be larger than a standard recommendation. Call (877) 550-6892 and we’ll work through the actual math on your roof.
A single Powerwall usually will not run two full AC units plus the rest of the house through a prolonged summer outage. Most Southlake homes with two HVAC zones need two Powerwalls (or a Powerwall plus a FranklinWH aPower) for true whole-home backup. One battery can handle essential circuits – refrigerators, lights, one AC unit staged carefully – but we’ll be honest with you about what one unit can and can’t cover before you buy.
Southlake falls in Oncor’s service area, where there is no standardized net metering policy. Your solar buyback rate depends entirely on which retail electric provider you chose, and many providers pay less for exported solar than they charge for grid power at peak. That means a battery’s job isn’t just backup – it’s arbitrage. By storing solar during the day and discharging during the expensive evening TOU window, a battery can shorten your payback period meaningfully. We’ll run those numbers off your actual bill before recommending anything.
Your production estimate drops – sometimes by 15% to 25% compared to a south-facing array on a simple roof plane. Multiple hip sections fragment usable panel area, and east-facing panels underperform in the afternoon precisely when you need output most. We model this accurately using the actual azimuth and pitch of your roof, not a generic production calculator. The good news: we build the battery strategy around that reduced production, so your whole system works together instead of underperforming silently.
Yes. Adding a battery to an existing solar system in Southlake requires an electrical permit through the city, and depending on the scope, a final inspection from the city’s building department. We handle all permitting and inspections as part of the install. We also flag any HOA architectural review requirements before we start, so there are no surprises mid-project. There’s no trip charge for estimates inside our own county, and we’re happy to walk you through the whole timeline – call (877) 550-6892.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Southlake since 2011.






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