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AfterFast, Reliable Solar Battery Storage & Backup Across Granbury
Solar battery storage in Granbury is not about chasing a lower utility bill. It is about keeping your lights on when the grid goes dark. A properly sized battery system paired with solar panels typically costs between $14,000 and $22,000 in this market before the 30% federal tax credit, and it can run your refrigerator, HVAC, and medical equipment through a multi-day outage like the one that hit Hood County in February 2021. Gus Petrakis and his crew have been installing battery backup systems for Granbury homeowners since 2011, and we answer our own phone at (877) 550-6892.
We work throughout Granbury, from the lakefront streets of the 76048 zip code to the newer subdivisions on the northern and eastern outskirts in 76049. If you live in Pecan Plantation, along Waters Edge Drive, or anywhere near Lake Granbury, we know your roof, your panel, and what it takes to keep your home running when the ERCOT grid does not.
Why Gus’s Solar Is Granbury’s Preferred Solar Battery Storage & Backup Company
Gus’s Solar is not a national outfit that flies a crew in from another state and disappears. Gus Petrakis puts his own name on the truck. He is the one who quotes your job, reviews your utility bill, and calls you back when something needs attention. That matters in a town like Granbury, where you will see him at the hardware store and where word travels fast when someone does right by a neighbor.
We have been serving local communities for over 29 years, and our Granbury customers know the difference. When a battery inverter trips during a heat wave in July, you do not want a ticketing portal. You want a live person. We answer calls 24/7. Our crew is background-checked and uniformed, and Gus’s own team handles every install, not a sub. Every solar job carries the 90-Day Done Right Promise in writing: if it is not right, one call brings Gus back to make it right.
Granbury’s lake-area homes present challenges that an out-of-town installer will not catch until the job is half done. We know the 100-amp service entrances hiding in older shoreline houses. We know which HOAs in the newer subdivisions restrict panel visibility from the street. That local knowledge keeps your install on schedule and your final price honest.
Our Solar Battery Storage & Backup Services in Granbury
Tesla Powerwall Installation
A Tesla Powerwall installation in Granbury typically runs $11,500 to $16,500 per unit installed, depending on whether a panel upgrade is required. For lake-area homes with older 100-amp service entrances, we bundle the panel work into the quote so you are not surprised halfway through the job. The Powerwall’s seamless switchover matters here because Granbury sits on the isolated ERCOT grid, where a winter storm or summer demand spike can knock out power with little warning.
Enphase IQ Battery Installation
Enphase IQ batteries are a strong fit for Granbury’s smaller footprint homes and for homeowners who want modular capacity they can expand later. An IQ Battery 5P install with the required system controller generally lands between $9,000 and $14,000 in Granbury. We pair Enphase with REC or Qcells panels on many lake-area rooftops where roof load matters and where homeowners prefer a system that degrades gracefully rather than all at once.
Whole-Home Backup Power
Whole-home backup in Granbury means sizing your battery for the worst week of the year, not just an average night. The February 2021 freeze left Hood County without power for days, and ice-coated panels could not recharge anything. We size systems to carry your HVAC, refrigerator, well pump if you are on one, and medical equipment through a multi-day outage, then recharge from solar once the ice melts. A whole-home backup system with two batteries and necessary panel work commonly runs $24,000 to $38,000 in Granbury.
Battery Retrofit for Existing Solar
If you already have solar panels and want to add storage, we retrofit batteries onto systems from any manufacturer. Granbury has a significant number of homes with solar installed years ago, before battery costs dropped and before the 2021 grid failure made storage a practical necessity. A typical retrofit with a single battery and the required inverter hardware runs $12,000 to $18,000 in Granbury. We will inspect your existing inverter, panel, and roof penetrations before quoting so the retrofit integrates cleanly.
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 Granbury
We install and service Tesla, Enphase, and FranklinWH battery systems, and we work with solar equipment from SolarEdge, REC, Qcells, and Panasonic. Because we stock components for these brands and maintain direct relationships with their technical support teams, we can turn around most Granbury repair and expansion jobs faster than an installer who has to order parts from a distributor and wait. If you already have a battery from one brand and want to add capacity from another, we will tell you honestly whether that is a good idea for your specific system.
Common Solar Battery Storage & Backup Problems We See in Granbury Homes
Granbury’s combination of 1970s-era lake houses, newer HOA neighborhoods, and Gulf-driven ice storms creates failure patterns we see over and over again.
- Undersized 100-amp service entrances in older lake homes. Many shoreline properties in the 76048 zip code still carry the 100-amp panels from their days as seasonal Hood County structures. When the grid goes down and your battery is the only power source, starting a modern AC compressor can trip the battery’s rapid shutdown or overload an old service entrance. We typically recommend a 200-amp panel upgrade as part of any battery install on these homes.
- Ice-coated panels during multi-day winter outages. Gulf-driven winter storms can sheet Granbury panels in ice for days at a time. A battery sized for a normal summer night may not carry you through a three-day freeze if your panels cannot recharge. We size battery capacity with realistic degradation assumptions and local ice-event history, not just a generic overnight load calculation.
- Snowbird systems that cycle to depletion and go dark. A retired couple who sets their thermostat low and leaves for Minnesota in October may return to a battery that repeatedly cycled to depletion during cold snaps. Once the battery hits its reserve threshold, the system can shut down monitoring entirely, hiding a failed inverter until the first 100-degree July day. We run a true-up check before seasonal departures so homeowners leave with a system that will be there when they get back.
- HOA visibility restrictions on street-facing installations. Newer subdivisions on Granbury’s northern and eastern outskirts often have covenants that restrict where panels and batteries can sit relative to the street. We read the HOA documents before we quote, so your system passes review the first time instead of getting flagged after install.
Pricing for Solar Battery Storage & Backup in Granbury, TX
Here is what Granbury homeowners can expect to pay in 2026, based on jobs we have completed across the 76048 and 76049 zip codes.
- Single battery install (Enphase IQ or similar): $9,000 – $14,000
- Tesla Powerwall install: $11,500 – $16,500 per unit
- Battery retrofit to existing solar: $12,000 – $18,000
- Whole-home backup with two batteries: $24,000 – $38,000
- Panel upgrade (100-amp to 200-amp): $2,800 – $4,500
The biggest local variable is your electrical panel. In Fort Worth-area tracts, 200-amp panels are standard. In Granbury’s older lake neighborhoods, a 100-amp panel is common enough that we price the upgrade as a near-standard line item. The federal 30% clean energy tax credit applies to both the battery and the panel work when it is part of a solar storage project. Bring me a bill, I’ll bring you the math. Every estimate is free, built from your actual usage, and good for two weeks. Take two weeks. Think about it. The price will be the same.
We Also Serve Cities Near Granbury
Our Solar Battery Storage & Backup team works throughout Hood County and the surrounding area, including Pecan Plantation, Joshua, Cleburne, and Weatherford. If you are outside the Granbury city limits but still in the area, call us, we likely cover your road. We coordinate scheduling from our Dallas-Fort Worth office and send Gus’s own crew to Granbury and the surrounding communities every week.
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, a properly sized Powerwall will keep your essential loads running through a multi-day outage, but the key is sizing. A single Powerwall stores about 13.5 kWh of usable energy, which is enough to run a refrigerator, lights, internet, and intermittent HVAC use for roughly 12 to 24 hours without solar input. During the February 2021 freeze, ice on panels meant no solar recharge for days, so we recommend two batteries for whole-home backup in Granbury’s lake-area homes if you want uninterrupted HVAC through a repeat event. Call (877) 550-6892 for an exact quote, estimates are free.
Yes, but your 100-amp panel will likely need to be upgraded to 200 amps first. Many original Lake Granbury shoreline homes were permitted as seasonal structures under Hood County’s unincorporated zoning, and their service entrances were never designed for modern solar interconnection or whole-home battery discharge. We bundle the panel upgrade into your battery quote so the final number is the final number, not a surprise. The upgrade typically adds $2,800 to $4,500 in Granbury.
Battery backup keeps your HVAC cycling, security system powered, and monitoring active while you are gone, but the system needs to be configured correctly for seasonal vacancy. If a thermostat is set too low in winter, the battery can cycle to depletion and shut down monitoring without anyone noticing. We run a routine true-up check before seasonal departures and set reserve thresholds so the system protects itself and stays online. A retired couple on Waters Edge Drive left for Minnesota last October and their Powerwall kept their HVAC and security running through a three-day ice storm, with a full recharge from their REC panels once the ice melted. They had no idea anything had happened until they checked the app.
Yes, we retrofit batteries onto existing solar systems regardless of who installed the original panels. We inspect your inverter, your array, and your roof penetrations before quoting so we know exactly what hardware your battery will require. If the original installer is out of business or unresponsive, that does not slow us down, we work directly with the equipment manufacturers. Call (877) 550-6892 and we will send Gus’s crew out for a free assessment.
Honest answer: adding a battery extends your payback period because you are buying insurance against outages, not just cheaper electricity. In Granbury, where the 2021 ERCOT collapse left Hood County without power for days, most of our customers treat battery storage the way they treat a standby generator, as protection for medical equipment, HVAC, and a freezer full of food. With Granbury’s 230-plus sunny days and high summer AC loads, the solar portion of your system pays back in roughly 8 to 12 years. The battery adds 5 to 8 years to that, but it also keeps your house livable when the grid fails. We quote the year-25 output, not the day-one brochure number, so you will see the real math, not a sales pitch.
Call Gus’s Solar for Battery Storage in Granbury
If you live in Granbury and you are tired of watching the weather forecast like it is a threat assessment, call us. Gus Petrakis will answer the phone at (877) 550-6892. Bring me a bill, I’ll bring you the math. We serve the entire Granbury area, from the lakefront homes in 76048 to the new subdivisions in 76049, plus Pecan Plantation, Joshua, Cleburne, and Weatherford. Free estimates, no signature wanted tonight, and a live person on the line 24/7.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Granbury and North Central Texas since 2011.