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Fast, Reliable Solar Battery Storage & Backup Across Lakehills
Solar battery storage in Lakehills typically costs between $12,000 and $18,500 installed, and most jobs are completed in one to two days once equipment arrives. That’s the straight answer. If you’re reading this because your Bandera Electric Cooperative bill keeps climbing while your panels push power back to the grid at avoided-cost rates, a battery is the fix. Gus’s Solar has been installing battery systems across the Hill Country for years, and we answer the phone when you call: (877) 550-6892.
We know Lakehills. We know the lake cabins off Park Road 37, the rural spreads off FM 1283, the 78056 zip code, and the manufactured homes tucked back on caliche driveways where a power outage means no well pump and no water. That’s not a hypothetical. That’s what a backup system is for here.
Why Gus’s Solar Is Lakehills’s Preferred Solar Battery Storage & Backup Company
Gus Petrakis founded this company in 2011 with his own name on the building, his own license number on the paperwork, and his own cell number available to every customer who wants it. We’re not an out-of-state sales crew that parachutes into Lakehills, writes a contract, and subcontracts the work to whoever’s available. Gus’s crew shows up in uniform, background-checked, and does the install themselves. Every job is backed by the 90-Day Done Right Promise in writing. If it’s not right, Gus makes it right.
The reviews from Lakehills customers tell the story better than we can. Homeowners mention the same things over and over: someone actually answered the phone at 9 p.m. during a storm, the quote didn’t change between the first visit and the final invoice, and the crew didn’t leave until the system was tested and the homeowner understood how to read it. That’s the standard.
Response time to Lakehills matters when a battery error light is blinking and the fridge is warming up. We coordinate scheduling from our San Antonio office and send crews to Lakehills regularly, so we’re not guessing at drive times or unfamiliar roads. We know where the BEC service territory lines run. We know which neighborhoods off Highway 1283 have the older underground services. More on that below.
Our L.O.C.A.L. values aren’t a poster on a wall. Local roots, On time, Community first, Accountable, Loyal. They’re how we quote, how we show up, and how we handle it when something goes sideways. If a salesman needs an answer tonight, the answer is no. Take two weeks. Think about it. The price will be the same. That’s how Gus has done it for years, and it’s why our Solar Battery Storage & Backup work in this part of Bandera County keeps coming from referrals, not cold calls.
Our Solar Battery Storage & Backup Services in Lakehills
Here’s what we actually do for homeowners around Lakehills, and why each one matters differently here than in the city.
Tesla Powerwall Installation
A Tesla Powerwall 3 installed in Lakehills runs roughly $11,500 to $15,000 before any available incentives, and that includes the backup gateway, wiring, and programming for self-consumption or backup modes. The Powerwall’s integrated inverter simplifies retrofits on older Lakehills arrays, which matters on those 2010-era rooftop systems where the original string inverter is aging out. We size the battery against your actual BEC usage data, not a generic formula. Bring me a bill, I’ll bring you the math.

Enphase IQ Battery Installation
For homes with Enphase microinverters already on the roof, the IQ Battery 5P is the natural pair. Installation in the 78056 area typically lands between $10,000 and $14,500 depending on how many units and whether a backup controller goes in. We see a lot of Lakehills properties where the solar array is fine but the homeowner can’t add a generator easily because of propane delivery logistics on long county roads. A battery tied to existing Enphase gear solves that cleanly.

Whole-Home Backup Power
Whole-home backup in Lakehills means something specific: keeping the well pump, septic aerator, refrigerator, and a few lights alive when a Hill Country storm takes out the feeder line. The cost for a whole-home configured battery system, including critical load panel separation, runs $13,000 to $18,500 here. We spend extra time on load analysis for lake cabins and rural custom homes because their electrical panels weren’t built with battery backup in mind. Some need panel upgrades first. We’ll tell you that before we quote, not after.

Battery Retrofit for Existing Solar
This is the service most Lakehills solar owners actually need. You already have panels. You’re getting a BEC true-up statement that pays avoided cost, which is less than a third of what you pay per kWh. A retrofit puts a battery between your panels and the grid so you store daytime production instead of selling it for pennies and buying it back at full price. Retrofits here typically run $10,500 to $14,000 depending on the battery brand and whether the existing inverter needs replacement. We’re doing more of these in Lakehills than anywhere else in our service area, because the BEC rate structure makes the case for storage obvious once someone explains it.

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 Lakehills
We install and service Tesla, Enphase, SolarEdge, and FranklinWH battery systems across Lakehills. If you already have one of these brands, we can maintain it, expand it, or troubleshoot it. We carry common parts in our trucks so a service call to a home off FM 1283 doesn’t become a two-week wait for a voltage regulator to ship from Dallas. And when a homeowner asks whether we actually know the brand they have, the answer is yes, we have the certifications, and Gus’s crew has been installing these systems since before most Texas homeowners even knew battery storage was an option.
Common Solar Battery Storage & Backup Problems We See in Lakehills Homes
- Skipping the battery because “net metering” sounded like San Antonio retail credit. CPS Energy and Bandera Electric Cooperative are not the same animal. BEC buys exported power at avoided cost, so Lakehills solar owners without batteries are leaving money on the table every sunny afternoon.
- 100-amp and 125-amp panels on 1970s-90s lake cabins that can’t fit both a solar breaker and a backup circuit. The system fails interconnection or trips the main during an outage. We upgrade the panel as part of the battery install when the existing service won’t carry the load.
- Hail-damaged panels from spring storms that knock the system offline right when you need it most. Lakehills sits squarely in a Texas hail corridor. If the roof-mount array lacks Class 4 impact-rated panels, a hard storm can leave a battery-backed home dark because the panels themselves are shattered.
- Well pumps and septic aerators that homeowners didn’t account for in the backup load calculation. On acreage, the well pump is the single most important load during an outage. We size the battery and the protected loads panel so you still have water when BEC’s feeder line is down.
Pricing for Solar Battery Storage & Backup in Lakehills, TX
Here are honest numbers for the Lakehills market, based on what we’ve installed across 78056 and the surrounding county:
| Service | Typical Lakehills Price Range |
|---|---|
| Tesla Powerwall 3 installation (single unit) | $11,500 - $15,000 |
| Enphase IQ Battery 5P (single unit, backup-capable) | $10,000 - $14,500 |
| Battery retrofit for existing solar array | $10,500 - $14,000 |
| Whole-home backup with critical load panel | $13,000 - $18,500 |
| Panel upgrade (100A to 200A) where required | $2,800 - $4,200 |
What moves the number: the age of your existing inverter, whether your panel can accept a backup breaker, the distance from the meter to where the battery sits, and whether you want one battery or two. We don’t do teaser pricing. The number you see is the number you pay, period. Estimates are free. Call (877) 550-6892 and we’ll come look at your actual setup in Lakehills and put it on paper.
Gus quotes the year-25 output, not the day-one brochure number. That applies to batteries too. If the math doesn’t work, he’ll tell you not to buy. That’s happened more than once on a kitchen counter in this county.
We Also Serve Cities Near Lakehills
If you’re in Helotes, Hondo, Lackland Air Force Base, or Leon Valley, we cover those areas too. The BEC avoided-cost issue we describe above is specific to Lakehills and its cooperative service territory, but the battery hardware and the install standards are the same wherever Gus’s crew goes. Call us and we’ll tell you straight what applies where you live.
Serving Lakehills, TX - Our Local Coverage Area
We’re based in the Lakehills 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 Lakehills
No, BEC does not offer full retail net metering, and there is no standing battery incentive for Lakehills homeowners right now. BEC buys exported solar at avoided-cost rates, typically less than a third of what you pay per kWh. That’s precisely why a battery is the single most valuable addition you can make to an existing solar system in Lakehills: you stop exporting at a loss and start storing for your own use. Call (877) 550-6892 and bring us a bill, and we’ll show you the exact math on your account.
Most of the time, yes, but the panel likely needs upgrading to 150A or 200A first, which adds $2,800 to $4,200 to the project. The limiter is not the battery, it’s the service entrance. Many 1980s cabins around Lakehills were built with 100-amp panels that can’t legally accept the combined load of a solar breaker and a backup circuit without tripping, and BEC requires the upgrade before interconnection. We handle the panel upgrade and the battery install in one coordinated job, and we won’t quote you a battery without checking the panel first.
Yes, if the backup load panel is configured correctly. A properly sized battery, usually 10 to 13.5 kWh of usable storage, will run a typical 1 hp well pump, a septic aerator, a refrigerator, and basic lighting through most outages lasting less than a day. The detail that gets missed on Lakehills acreage is the well pump’s starting surge, which is why we measure it with a meter instead of guessing. If you have livestock water troughs or a pressure tank, tell us when we visit and we’ll factor that in.
It might not, depending on the size of your array and your actual consumption. A battery only fixes what you can store, and if your array produces less than you use after the sun goes down, the bill will never fully go away. What a battery does in Lakehills is change how much of your solar production you actually use, and stops you selling it back at avoided cost. On a multi-acre property off FM 1283, we recently retrofitted a Powerwall 3 to a 2012 array whose owner was giving away over 2,000 kWh a year at avoided cost. After the retrofit, their overnight draw comes from stored solar before BEC ever sees it. Their bill didn’t go to zero, but their payback on the battery alone dropped from twelve years to about six.
On most Lakehills properties, the limestone and caliche bedrock sits close enough to the surface that drilling piers for a ground-mount array adds days of labor and thousands of dollars to the job. That’s why most installers here, including us, recommend roof-mount designs even when you have open south-facing land. The battery itself doesn’t care about bedrock, it gets wall-mounted or pad-mounted near your meter. But if you’re thinking about adding panels alongside a battery, plan for roof placement and let us check the roof’s remaining life before we quote. Roof age and condition on those 1970s-90s lake cabins varies wildly, and we’d rather tell you to re-deck first than find out after the panels are up.
Get a Straight Answer About Battery Storage in Lakehills
If you own solar in Lakehills and you’re still seeing a BEC bill every month, call us. If you’re thinking about adding a battery before the next storm season and want honest numbers instead of a sales pitch, call us. Gus Petrakis answers his own phone, and so does a live person on our line 24/7. The estimate is free, the price won’t change, and nobody’s going to ask you to sign anything tonight. Call (877) 550-6892 and tell us what you’re seeing on your bill. We’ll take it from there.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Lakehills and the surrounding Hill Country since 2011.






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