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AfterFast, Reliable Solar Battery Storage & Backup Across Granbury
Solar battery storage in Granbury typically costs between $12,500 and $18,500 installed, with the final number driven by whether your home needs a panel upgrade first. That last part matters more here than almost anywhere else in North Texas, and we’ll explain exactly why below. If you live in the 76048 or 76049 zip codes and you’re weighing backup power against another February 2021, call (877) 550-6892 and we’ll walk through the real math on your actual home.
Gus’s Solar has been putting batteries on Granbury homes long enough to know which lakefront properties still carry 100-amp service entrances and which subdivisions have HOA restrictions on where a Powerwall can sit. We’re not a pop-up crew working out of a hotel conference room. Gus Petrakis puts his name on the truck, answers his own phone, and stands behind every install with the 90-Day Done Right Promise in writing.
Why Gus’s Solar Is Granbury’s Preferred Solar Battery Storage & Backup Company
Granbury homeowners call us because they’ve already talked to someone else and didn’t like how it felt. The door-knocker who needs a signature tonight. The out-of-state outfit that quotes one price over the phone and another at the kitchen table. Gus’s crew doesn’t work that way. We quote the year-25 output, not the day-one brochure number, and we tell every customer the same thing: take two weeks, think about it, the price will be the same.
For over 29 years, our team has served local communities by doing the opposite of high-pressure. That means background-checked, uniformed technicians on every job, no subcontractors handed your roof, and a live person answering the phone 24/7. When a winter ice event knocks out power in Hood County and your battery throws a fault code at 2 a.m., you call and Gus or one of his crew members picks up. Not a ticketing portal. Not a call center three states away.
We also schedule crews from our Dallas-Fort Worth office directly into Granbury, so response times to the lake neighborhoods off East Pearl Street, the newer subdivisions on the northeast side, and the semi-rural acreage along Weatherford Highway run same-week for most service calls.
Our Solar Battery Storage & Backup Services in Granbury
Tesla Powerwall Installation
A Tesla Powerwall 3 installed on a Granbury home runs roughly $14,000 to $18,000 before any applicable panel upgrade. The Powerwall’s integrated inverter means one less box on the wall, which helps in lakefront homes with limited garage or exterior wall space. We stock Tesla-compatible parts locally for Granbury customers, so service visits don’t wait on a shipment from California.
Enphase IQ Battery Installation
The Enphase IQ Battery 5P costs around $4,200 to $5,500 per unit, with most Granbury homes pairing two or three for whole-home coverage, bringing the full install to $13,000 to $17,000. What makes Enphase a strong fit for Granbury is its modular design. You can start with one battery, see how it handles your actual outage loads, and add capacity later without re-engineering the system.
Whole-Home Backup Power
Whole-home backup in Granbury usually lands between $18,000 and $28,000 depending on whether you’re covering a 1,800-square-foot lake cottage or a 3,500-square-foot primary residence with two AC units. The sizing question in Granbury isn’t just square footage. It’s how many days you want to run without grid power and without sun on your panels. We’ll get into that below, but the short version is this: multi-day ice events change the math.
Battery Retrofit for Existing Solar
Adding battery backup to an existing Granbury solar system typically costs $10,000 to $14,000 for a single Enphase IQ Battery with the required system controller, or $13,000 to $16,000 for a Tesla Powerwall retrofit. The wildcard in Granbury is your service panel. If your home was built as a weekend cabin in the 1970s or 1980s and later converted to a primary residence, there’s a good chance the panel can’t pass interconnection as-is. We’ll price that upfront, not spring it on you after the battery is ordered.
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 Granbury
We work with Tesla, Enphase, SolarEdge, and FranklinWH equipment every week across Granbury and Hood County. That covers new installs, retrofits, firmware troubleshooting, and warranty support. If you’ve got an existing system from another installer and it’s throwing codes or underperforming, we’ll take a look. We keep common Enphase and Tesla components in our local service stock, which means faster turnaround when your battery needs a new comms board or a firmware refresh after an outage.
Common Solar Battery Storage & Backup Problems We See in Granbury Homes
- Undersized 100-amp or smaller service panels failing interconnection. A large share of Granbury homes in the 76048 lake neighborhoods were originally built as seasonal structures under Hood County’s unincorporated zoning rules. The 100-amp service entrance that was fine for a weekend cabin fails modern solar interconnection standards. This means the panel upgrade gets bundled into the battery install, and homeowners who weren’t told this upfront get hit with a surprise line item.
- Batteries sized for short outages, not multi-day ice events. Granbury sits in the Cross Timbers region and catches Gulf-driven winter ice storms. When panels are sheeted in ice for two or three days and the grid is down simultaneously, a single battery that looked fine on the proposal doesn’t carry the house. Sizing matters, and it’s sized differently here than in a Dallas suburb.
- Unpermitted seasonal electrical work that surfaces as battery fault codes. Older lakefront homes around Lake Granbury have decades of handyman electrical work, some of it never permitted. When we tie a battery into those circuits, improper grounding and outdated wiring show up as persistent fault codes. We trace them, fix them, and document the repair properly.
- HOA visibility restrictions on outdoor battery placement. Newer subdivisions on the northern and eastern outskirts of Granbury, many built during the 2000s through 2020s DFW retiree migration wave, often have covenants regulating what’s visible from the street. A Tesla Powerwall mounted on the front garage wall can draw a violation notice. We know which Granbury HOAs enforce this and plan the placement accordingly.
Pricing for Solar Battery Storage & Backup in Granbury, TX
| Service | Typical Granbury Range |
|---|---|
| Single Enphase IQ Battery retrofit | $10,000 – $14,000 |
| Tesla Powerwall 3 installation | $14,000 – $18,000 |
| Two-battery whole-home system | $18,000 – $24,000 |
| Panel upgrade (100-amp to 200-amp) | $3,500 – $6,500 |
| Battery expansion (adding a second unit) | $4,500 – $8,000 |
The panel upgrade line item appears on more Granbury quotes than anywhere else we work. If your lake home still has a 100-amp service entrance, expect it. Bring us a bill and we’ll bring you the math. The price quoted is the price charged, and the estimate is free. Call (877) 550-6892.
What Makes Battery Backup Different in Granbury
Granbury is a lakeside retirement and second-home destination built around Lake Granbury. The February 2021 Winter Storm Uri grid collapse left Hood County residents without power for days on the isolated ERCOT grid, with no neighboring-state backup to draw from. That single event turned solar-plus-battery storage from a green upgrade into a practical grid-independence necessity. The large, financially stable retiree and semi-rural population here is uniquely motivated by backup power, not utility savings alone. Battery attachment rates run far higher than in typical DFW suburbs.
Because much of Hood County was built out under unincorporated zoning before solar-ready 200-amp panels became standard, a large share of Granbury homes in the 76048 lake neighborhoods still carry 100-amp or smaller service entrances. That means battery storage here is routinely paired with an electrical panel upgrade, a near-standard line item that would rarely appear in newer Fort Worth-area tracts. Any quote for Solar Battery Storage & Backup in Granbury that doesn’t mention the panel question isn’t looking at your house. We do.
The climate compound is real too. Granbury sees roughly 230-plus sunny days per year and sustained triple-digit heat through July and August that drives AC loads, and solar ROI, to among the highest levels in the state. Those same weather patterns put Granbury squarely in the path of winter ice events. Battery sizing accounts for potential multi-day periods where panels are sheeted in ice and grid power is absent at the same time. That’s the number that matters. Not the day-one brochure output.
Our crew retrofitted an Enphase IQ Battery onto a 1970s lakefront home near East Pearl Street that had been converted from a weekend cabin to a primary residence. The existing 100-amp panel couldn’t pass interconnection, so we upgraded the service entrance before tying in the existing microinverter array. After a winter ice event, the homeowner reported the battery carried her through a two-day outage seamlessly, even while her panels were sheeted in ice. That’s the standard we build to in Granbury.
We Also Serve Cities Near Granbury
Our crews work throughout Hood County and the surrounding area, including Pecan Plantation, Joshua, Cleburne, and Weatherford. If you’re on the edge of Granbury near the county line, call us. If you’re inside the county and need a free second opinion on a written estimate, that’s free too. We don’t charge a trip fee inside our own county.
Serving Granbury, TX - Our Local Coverage Area
We’re based in the Granbury 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 Granbury
Yes, probably, if your home still carries a 100-amp or smaller service entrance, which is common in the 76048 lake neighborhoods where seasonal cabins were converted to primary residences. The panel upgrade runs $3,500 to $6,500 in Granbury and gets bundled into the battery install, not tacked on after you’ve signed. Call (877) 550-6892 and we’ll check your panel before we quote anything.
We size against your actual outage loads, not your solar production, because Granbury ice events can leave panels useless for days while the grid stays down. That means looking at your furnace blower, refrigerator, well pump if you have one, and medical equipment, then calculating how many days of autonomy you want. Two batteries usually covers a typical Granbury home for 48 to 72 hours with conservative load management. One battery generally doesn’t.
Some will, some won’t. Newer subdivisions on the northern and eastern edges of Granbury frequently have covenants that regulate street-visible equipment, and a wall-mounted Powerwall on the front of the garage is exactly what those rules target. We check your HOA’s covenant language before recommending placement, and we’ll tell you honestly if a garage-interior or side-yard install is the safer route.
Yes. Battery retrofits work with most existing systems, including older microinverter arrays and string inverter setups. The two things that complicate Granbury retrofits are undersized panels, which we covered above, and unpermitted electrical work from the original construction. We handle both. A typical retrofit runs $10,000 to $16,000 depending on equipment and panel condition.
Your battery takes over automatically within milliseconds when the grid drops, and your solar panels keep charging the battery during daylight hours if they’re not ice-covered. During a rolling blackout, you simply keep running. If the battery drains and the grid is still down with no sun, you’re out until conditions change, which is why sizing for multi-day autonomy matters so much in Granbury specifically.
For a free estimate on Solar Battery Storage & Backup in Granbury, TX, call (877) 550-6892. Gus will answer. Tell him what you’re trying to protect, and he’ll tell you what it actually takes, no signature wanted tonight.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Granbury and Hood County with honest numbers and straight answers since 2011.