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Fast, Reliable Solar Battery Storage & Backup Across Hondo
If you live in Hondo and you’re tired of watching the lights flicker every time a storm rolls through Medina County, solar battery storage is the fix. A properly sized battery system keeps your well pump, freezer, and air conditioning running when Medina Electric Cooperative’s lines go down. Gus’s Solar installs and services battery backup systems across Hondo, including Tesla Powerwall and Enphase IQ batteries. We quote real numbers off your actual bill, not a brochure. Call (877) 550-6892 and a live person answers, day or night.
We know Hondo. We know the ranch properties off FM 462, the older masonry homes near downtown, and the newer subdivisions spreading toward Highway 90. We also know that a battery backup system sized for San Antonio won’t necessarily hold up on a 40-acre ranch with a well pump and livestock waterers. That local difference matters more than most people expect.
Why Gus’s Solar Is Hondo’s Preferred Solar Battery Storage & Backup Company
Gus Petrakis founded this company in 2011 and put his own name on the building. He still answers his own phone. That is not a marketing line; it is how the business runs. Hondo homeowners call us because they want a name they can verify and a face they will see again at the hardware store on Avenue M, not a pop-up crew that disappears after the paperwork clears.
Our Solar Battery Storage & Backup team handles everything from whole-home backup design to retrofitting batteries onto existing solar arrays. We do not hand work off to subcontractors. Gus’s own crew does the install, flashes every rooftop penetration properly, and stands behind the work in writing with our 90-Day Done Right Promise.
Response time to Hondo is straightforward. Dispatch and scheduling are coordinated from our San Antonio office, and our crews serve Hondo regularly, so we are not driving in from three counties away wondering what the roads look like. We know Avenue M, we know the co-op interconnection process, and we know what a Medina County hailstorm does to rooftop equipment.
Our Solar Battery Storage & Backup Services in Hondo
Tesla Powerwall Installation
A Tesla Powerwall 3 installed in Hondo runs roughly $12,500 to $16,000 fully installed, depending on your panel situation and whether you need a backup gateway or main panel upgrade. For Hondo homes under Medina Electric Cooperative, the Powerwall’s grid-forming capability matters more than the brochure specs suggest. When the co-op line faults during a storm, a grid-forming battery becomes the new reference voltage for your home, so your solar keeps charging the battery even with the grid down. Not every battery does that.

Enphase IQ Battery Installation
Enphase IQ batteries run about $9,000 to $13,500 for a single 5P unit in Hondo, installed. The modular design means you can start smaller and add capacity later if your usage grows. For the post-WWII ranch homes common here, the 3.8 kW continuous output per unit is enough to keep a refrigerator, chest freezer, lights, and a few fans running overnight. If you need to run a well pump, that is a different conversation, and we will size it accordingly.

Whole-Home Backup Power
Whole-home backup for a typical Hondo residence costs between $15,000 and $28,000 depending on home size, air conditioning load, and whether you need a service panel upgrade. On ranch properties with irrigation pumps and outbuildings, that number climbs. We quote it off your actual utility bill and your actual loads, not a generic square-footage formula. Bring me a bill, I’ll bring you the math.

Battery Retrofit for Existing Solar
If you already have solar panels on your Hondo roof and they go dark every time the grid drops, a battery retrofit fixes that. Retrofit costs in Hondo typically range from $10,000 to $18,000 depending on your inverter type and main panel condition. String inverter systems need either an AC-coupled battery or a microinverter conversion. We will tell you which one your system actually needs, not which one has the better margin for us.

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 Hondo
We install and service Tesla, Enphase, and FranklinWH battery systems, along with SolarEdge inverters for existing installs. We keep common replacement parts and communication components stocked for Hondo service calls, so a diagnostics visit doesn’t become a two-week wait on a freight shipment. If your battery was installed by a national outfit that no longer answers the phone, we will still come look at it. Background-checked, uniformed technicians on every job, no exceptions.
Common Solar Battery Storage & Backup Problems We See in Hondo Homes
- Battery passes inspection but won’t run during an outage. This is the most common failure we find in Medina County. The inverter’s rapid shutdown was configured for grid-tie only, so when the co-op line drops, the battery thinks it should shut down too. The system looks fine on paper and fails the first time you actually need it.
- Undersized battery on a ranch property. A single 13.5 kWh Powerwall will not run a 3-horsepower well pump, stock tank heaters, and a large chest freezer through a two-day outage. It cycles too deep, too often, and the battery degrades fast. We size for the actual load, not the average residential profile.
- No dedicated breaker slot in the main panel. Hondo’s older homes, especially the masonry construction near the historic downtown, often have 100A or 125A panels that are already full. A battery retrofit without a subpanel upgrade creates a code violation and a fire hazard. Plan for the panel work before the storm, not after.
- Hail damage to panels than affects charging. Spring storms tracking northeast out of the Edwards Plateau hit Hondo hard. Cracked or impact-damaged panels produce less power, which means the battery recharges slower. If a hailstorm just passed through, have the array inspected before you trust the battery to carry you through the next outage.
Pricing for Solar Battery Storage & Backup in Hondo, TX
A single battery addition in Hondo starts around $9,000 and a full whole-home backup system with two batteries typically lands between $22,000 and $32,000. Here is what that looks like by project type:
- Battery retrofit to existing solar: $10,000-$18,000
- Single Tesla Powerwall 3 install: $12,500-$16,000
- Single Enphase IQ 5P install: $9,000-$13,500
- Whole-home backup with two batteries: $22,000-$32,000
- Main panel or subpanel upgrade: $2,500-$5,500 when required
What moves the number: your co-op interconnection fees, panel age and condition, distance from the meter to the battery location, and whether your existing inverter is compatible. No-hassle upfront pricing means the number we quote is the number you pay. Take two weeks. Think about it. The price will be the same. Call (877) 550-6892 for a free estimate.
Storm Resilience in Hondo: What Actually Matters
Hondo sits square in hail alley. Storms tracking northeast off the Edwards Plateau hammer Medina County every spring, and the damage splits into two categories: what hail does to the panels and what wind does to the structure. We recommend every Hondo system include panels rated to IEC 61215 for hail impact, and we discuss warranty language around impact damage before you sign anything. Installers who skip that conversation end up fielding warranty disputes after the first storm season. That is not how we work.
The bigger issue for battery backup in Hondo is the co-op interconnection. Medina Electric Cooperative is not CPS Energy. The net metering agreement, the interconnection fee, and the approval timeline are all different here than they are 40 miles east in San Antonio. If you buy a battery sized off generic advice that assumed CPS Energy export rates, your payback math is wrong from day one. We model your system specifially for Medina Electric Cooperative territory, including how the co-op credits exported power and what they charge for interconnection. I quote the year-25 output, not the day-one brochure number.
Why Medina Electric Cooperative Changes Your Battery Sizing
Most of Hondo falls under Medina Electric Cooperative, not CPS Energy. That changes two things. First, the co-op’s net metering credit rate differs from CPS, so the value of every kilowatt-hour you store versus export is different. Second, the co-op’s interconnection process has its own fee schedule and approval timeline. A battery sized for a CPS customer in San Antonio may be too small or too large for the same home in Hondo. We size the system for the co-op’s actual rules, and we handle the interconnection paperwork so you do not sit on hold with the co-op engineering office.
For ranch properties in the 78861 zip code with irrigation pumps, livestock waterers, and outbuildings, the battery conversation is different than a suburban rooftop install. A ground-mounted array feeding a barn, a well pump cycling throughout the day, and a freezer full of processed meat in the shop: that is a load profile no online calculator handles correctly. We walk the property, count the loads, and size the system for the actual usage pattern.
We installed a Tesla Powerwall 3 at a ranch-style home off Avenue M near the historic downtown, after the homeowner’s existing grid-tied system left them without power during a spring hail storm that knocked out the co-op line. Our crew added a whole-home backup panel and reworked the interconnection to include the battery as a grid-forming source, so now the well pump and freezer keep running even when the co-op fault clears. That job taught us something we already suspected: in Medina County, a battery without grid-forming capability is a very expensive paperweight during a real outage.
We Also Serve Cities Near Hondo
Gus’s Solar works throughout Medina County and the surrounding area. If you’re in Lakehills, Lackland Air Force Base, Helotes, or Leon Valley, we can come out, look at your system, and quote you an honest number. Same crew, same 90-Day Done Right Promise, same live person answering the phone at (877) 550-6892.
Serving Hondo, TX - Our Local Coverage Area
We’re based in the Hondo 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 Hondo
Yes, if the battery is grid-forming and the system was configured for off-grid operation. That is the key distinction. A grid-tied battery without grid-forming capability shuts down when the co-op line drops, even if your panels are producing. We configure every Hondo install for grid-forming operation where the hardware supports it, because Medina Electric Cooperative outages are exactly when you need the battery to work. Call (877) 550-6892 and we will inspect your existing configuration.
Medina Electric Cooperative’s export credit rate is typically lower than the retail rate you pay for imported power, which means storing your excess solar for later use is worth more than exporting it during the day. That makes battery economics more favorable in Hondo than they would be in a CPS Energy service area with full retail net metering. We run the numbers off your actual bill and your actual co-op rate schedule. Bring me a bill, I’ll bring you the math.
It depends on the inverter model and age. Some SolarEdge string inverters support AC-coupled batteries through an additional inverter. Older string inverters will not, and you will need either a conversion to microinverters or a new hybrid inverter. In Hondo’s older homes, panel capacity is often the bigger constraint. If your main panel is full, plan for a subpanel upgrade as part of the retrofit. We will tell you straight which path your system needs.
For a well pump, livestock waterers, and a basic refrigeration load on a ranch property, plan on at least 20 to 27 kWh of usable storage, which typically means two Powerwall 3 units or three Enphase IQ 5P units. A single 13.5 kWh battery will not carry that load through a two-day outage. We size the system after walking your property and counting actual loads, not from a satellite photo. Free estimates, done right.
Yes. Impact-damaged panels produce less power in full sun, which means the battery charges slower and may not reach full before the next outage. After a hailstorm passes through Hondo, have the array inspected, even if it looks fine from the ground. Microcracks are not visible but they degrade output. Our crew will inspect every panel and tell you honestly whether you need a repair or a replacement. Call (877) 550-6892 and we will come out.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Hondo since 2011.






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