Free bill analysis - bring a power bill, get the production math for your actual roof, panel brands like Qcells and REC compared side by side
If the pitch starts at your door and ends with "sign tonight for the special," sleep on it. The sun will still be there tomorrow; so will we.
Before
After
Before
After
Before
AfterFast, Reliable Solar Battery Storage & Backup Across Schertz
Solar battery storage in Schertz runs anywhere from $9,500 to $18,500 after the federal tax credit, depending on whether you want a single Tesla Powerwall for essential circuits or a multi-battery whole-home setup. We install, retrofit, and service battery systems throughout the 78154 ZIP, and we can usually be at your door within 48 hours to quote the job off your actual utility bill. If you’re tired of watching your panels sit idle during CPS Energy or GVEC outages, call Gus’s Solar at (877) 550-6892 and we’ll walk through your real numbers together.
Why Gus’s Solar Is Schertz’s Preferred Solar Battery Storage & Backup Company
Gus Petrakis founded this company in 2011, and he still answers his own phone. Our Solar Battery Storage & Backup team works throughout Schertz, from the Mesa Vista subdivision near Wiederstein Road to the newer builds off Roy Richard Drive. The same crew that quotes the job is the crew that installs it. Background-checked, uniformed, and on time. No subcontracted labor, no call center, no disappearing act after the check clears.
Schertz homeowners tend to be skeptical of solar sales pitches, and honestly, they should be. Many of our customers are active-duty or retired military from Joint Base San Antonio-Randolph. They’ve done their homework. We get detailed questions about payback periods, warranty terms, and what happens in year seven when the inverter needs replacing. We like those questions. Bring us a bill, we’ll bring you the math. Our 90-Day Done Right Promise is in writing on every job: if it’s not right, Gus makes it right, one call and he’s back out.
We also stock common battery components and parts locally for Schertz customers. When a Tesla Powerwall throws a firmware fault or an Enphase IQ Battery needs a communication module, you’re not waiting on a shipping truck from California. We keep the parts our Schertz customers actually use on hand, so turnaround stays days, not weeks.
Our Solar Battery Storage & Backup Services in Schertz
Here’s what we actually do for Schertz homeowners, named plainly so you know what you’re getting a quote for.
Tesla Powerwall Installation
A single Tesla Powerwall 3 installed in Schertz typically runs $11,000-$14,500 before incentives, including the gateway, electrical work, and permitting through CPS Energy or GVEC. Two Powerwalls for whole-home backup on a 2,500-square-foot brick veneer house in a master-planned community usually lands between $21,000 and $27,000. We handle the interconnection paperwork for either utility, which matters more than most people realize around here. See our pricing section below for why the utility matters.
Enphase IQ Battery Installation
The Enphase IQ Battery 5P is a strong fit for Schertz homes with existing Enphase microinverter systems. Adding one 5 kWh unit to an existing system runs $8,500-$11,000 installed. Two 5Ps for more outage coverage land around $15,000-$19,000. These batteries handle Schertz summer heat without derating as aggressively as some older chemistries, and they pair cleanly with existing Enphase monitoring your system may already have.
Whole-Home Backup Power
Whole-home backup in Schertz means sizing your battery bank to the load of your air conditioner, well pump if you have one, refrigerator, and the usual lights and outlets. Most 1,800-2,800-square-foot Schertz homes need 20-30 kWh of battery capacity for a full overnight outage, which translates to two Powerwall 3s or three Enphase 5Ps. Your HVAC is the big draw. A 4-ton AC unit running at 104°F outside pulls 4-5 kW continuous, and that’s what kills undersized battery setups.
Battery Retrofit for Existing Solar
Most of the battery work we do in Schertz is retrofits onto systems installed between 2010 and 2020. If your existing system used a string inverter without rapid shutdown, we’ll need to address that during the battery integration. If it used microinverters, the retrofit is cleaner and usually faster. Either way, we check the roof’s panel degradation rate before quoting battery capacity, because a 2012 system that’s lost 10% of its output can’t deliver the stored kilowatt-hours you expect during a July outage. A typical retrofit in Schertz runs $10,000-$16,000 depending on system age, inverter type, and whether your main panel needs upgrading.
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 Schertz
We install and service the brands our Schertz customers actually ask for. Tesla and Enphase lead the battery side, and on the panel and inverter side we work with Qcells, REC, and SunPower equipment daily. We keep common Enphase and Tesla components in local stock for faster turnaround, and when a part isn’t on the shelf, our supplier relationships get it to Schertz in days, not the two-week waits some national outfits quote. If you have an existing system and aren’t sure who made the panels or inverter, call us and we’ll identify it during the site visit.
Common Solar Battery Storage & Backup Problems We See in Schertz Homes
- Quoting the wrong utility’s rules. Schertz’s 78154 ZIP straddles the boundary between CPS Energy and GVEC territory. We regularly see quotes from out-of-town companies that assumed CPS Energy’s net metering terms when the home actually falls under GVEC, which has different interconnection paperwork and export compensation. That mistake produces a payback estimate that’s off by years and a permit that gets rejected.
- Battery capacity undersized for summer AC load. Schertz summers over 100°F force air conditioners to run nearly nonstop. A single 13.5 kWh Powerwall won’t carry a 4-ton AC through the night. We see homeowners disappointed by batteries sized by square footage alone, without accounting for the actual cooling load the battery needs to back up.
- HOA reinspection stop-work orders. Schertz’s master-planned communities, from Mesa Vista to newer developments off FM 1518, almost universally require rear-facing panel placement and concealed conduit runs. When the battery’s AC wiring and disconnect box are run visibly across a roofline, the HOA reinspection flags it and work stops. We do the concealed runs from day one, which adds a little labor but keeps the job moving.
- Retrofits onto degraded 2010s-era rooftop systems. A system installed in 2012 with a 0.7% annual degradation rate has lost roughly 9% of its output by 2025. If the battery is sized to the original panel spec instead of the actual current output, the homeowner watches the battery fall short during an outage. We test panel output as part of every retrofit in Schertz, not after the battery is already installed.
Pricing for Solar Battery Storage & Backup in Schertz, TX
Here are the numbers we actually quote when a Schertz homeowner calls. A single Tesla Powerwall 3 with essential-load backup runs $11,000-$14,500 installed. An Enphase IQ Battery 5P runs $8,500-$11,000. Whole-home backup with two Powerwall 3s lands $21,000-$27,000. A retrofit onto an existing 2012-2016 system runs $10,000-$16,000 depending on inverter work and panel condition. These are turnkey prices including permits, interconnection paperwork, and the 90-Day Done Right Promise. If a Schertz home falls under GVEC rather than CPS Energy, the interconnection process may add $300-$600 in specific utility fees, which we’ll identify before you sign anything. Call (877) 550-6892 for a free estimate built off your actual bill, not a brochure. Take two weeks. Think about it. The price will be the same.
We Also Serve Cities Near Schertz
If you’re in Selma, Universal City, Cibolo, or Converse, you’re still well within our service area. The same crew that handles Solar Battery Storage & Backup in Schertz covers the surrounding communities, and our response times to those areas are just as quick. Call us and we’ll confirm your service territory the same day.
Serving Schertz, TX - Our Local Coverage Area
We’re based in the Schertz 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 Schertz
Yes, you need a battery. Grid-tied solar panels shut off during outages by design, a safety requirement that prevents backfeeding electricity into lines that utility workers are repairing. A battery lets your panels keep producing and store that power for use while the grid is down. If you want outage protection, battery storage is the answer. Call (877) 550-6892 and we’ll size the right battery for your home’s actual AC load.
It matters because the two utilities have different interconnection processes, net metering rules, and export compensation. Some Schertz addresses in 78154 fall under CPS Energy and others under Guadalupe Valley Electric Cooperative. We confirm your serving utility before quoting so the payback math is real and the permit lands on the first pass. A contractor that guesses wrong hands you a payback period that’s off by years.
Yes, and in most cases it’s a clean retrofit. Microinverter-based systems from the 2010-2016 era generally integrate well with modern battery platforms like Enphase IQ Batteries. We’ll test your panels’ current output before sizing the battery so the capacity matches what your system actually produces now, not what it produced on day one.
Schertz’s 100°F-plus summer days reduce battery round-trip efficiency slightly and accelerate long-term degradation, especially if the battery is installed in direct afternoon sun or an unventilated garage. We recommend installing batteries on a shaded exterior wall or in a garage with ventilation, which keeps internal temperatures down and extends usable life. A battery installed in full afternoon sun on a west-facing Schertz wall will degrade measurably faster than the same battery on the north side.
Generally no, but most Schertz HOAs require rear-facing panel placement, concealed conduit runs, and approval before installation. A wall-mounted battery on the side of the house or in the garage rarely triggers HOA objections. We handle the HOA paperwork and design around their requirements from the first site visit, so you don’t get a stop-work order during reinspection.
If you’re ready to see what battery storage actually costs for your Schertz home, call Gus’s Solar at (877) 550-6892. Free estimate, no signature wanted tonight, and a live person answers the phone 24/7. If a salesman needs an answer tonight, the answer is no. We don’t work like that, and we never will.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Schertz since our first battery install there and still answering his own phone.