Backup Battery Systems for San Antonio Homes — Built for Texas Outages
San Antonio home battery storage — Tesla Powerwall 3, Enphase IQ, Franklin aPower. 30% federal credit through 2032.
Trusted Partners
Why San Antonio homeowners are installing batteries this year
Power in San Antonio runs through CPS — a utility that has not modernized at the pace residents need. Sub-zero temperatures during Uri locked San Antonio water mains in ice — homes without power couldn't run dripping faucets, and pipes burst by the thousands. Battery storage is the only consumer-grade defense against multi-day CPS outages. On CPS Energy in San Antonio, the math favors storing kWh and using them at night rather than exporting at the 4¢ rate. The 30% Federal Investment Tax Credit applies to standalone batteries through 2032 with no upper cap.
Solar in San Antonio Solar Battery Installation The Light: common questions
How do I choose the right battery for my San Antonio home?
Most San Antonio households install 13.5-20 kWh — enough to run the fridge, AC, lights and internet through a one- or two-day event. Powerwall 3 with the Tesla Backup Gateway 2 — full-home backup, plus Storm Watch automatic pre-storm charging in San Antonio. Franklin aPower 2 with 13-year warranty — long-tail value for San Antonio homeowners staying long-term. Either choice claims the 30% federal credit; we walk you through the tradeoffs in your free assessment.
How long does a battery retrofit take on a San Antonio home with existing solar?
Yes, retrofits are the majority of our San Antonio battery work and almost always go in clean. We commonly add Powerwall 3, IQ Battery 5P/10, and Franklin aPower onto third-party solar from Sunnova, ADT, SunPower, Freedom Forever and others. We assess your existing inverter and main panel first; older string inverters sometimes need a small AC-coupling component (~$1,200), but most San Antonio retrofits go in clean. San Antonio permits typically issue in 1-2 weeks and CPS PTO follows in 2-3 weeks.
What's the typical ROI on home battery storage in San Antonio?
Once you factor in the 30% federal credit and an avoided $600 per outage event, payback typically lands in the 8-11-year range. San Antonio homeowners typically save $40-90/month with a battery on a time-of-use plan from REPs like Rhythm Energy, Octopus Energy or Constellation. Texas TOU plans charge 24-28¢/kWh at peak and 4-6¢/kWh overnight; the battery moves load from the expensive window to the cheap window. CPS Energy pays around 4¢/kWh for solar exports — workable, but a battery still earns more by self-consuming kWh at retail rates.
Electricity Costs Are Rising Across San Antonio
Many homeowners in San Antonio installed solar panels expecting their electricity bills to drop dramatically.
But many still see $120–$200 monthly electric bills, even with solar systems producing plenty of energy.
The reason comes down to how electricity is used throughout the day.
Solar panels generate most of their electricity during:
But homes in San Antonio often use the most energy during the evening, when:
- Air conditioning continues running
- Families return home
- Appliances and electronics are used
Why Solar Energy Is Often Sold to the Grid
Most solar systems operate in a simple cycle.
During the day:
- Solar panels produce electricity
- Extra solar energy is exported to the grid
- Solar production stops
- Electricity must be purchased from the grid
Exporting solar energy during the day
and
buying electricity back later in the evening.
Even though the solar system produced enough energy overall.
How the Light Battery Program™ Changes the Math
A solar battery allows your system to store excess solar energy during the day.
That stored energy can then power your home after sunset, when electricity demand is highest.
The Light Battery Program™ includes a $54 monthly battery credit that helps offset the cost of the battery.
Example scenario.
Typical San Antonio solar homeowner:
With the Light Battery Program™
Battery lease: $85/monthBattery credit: –$54/month
Instead of exporting solar power and buying electricity later, homeowners can store their solar energy and use it when their home needs it most.
A Battery Upgrade Designed for Existing Solar Systems
The Light Battery Program™ was designed for homeowners who already have solar panels installed.
The program includes:
- Battery storage installation
- A participating electricity provider
- A fixed $54 monthly battery credit
- 1:1 net metering structure under the program
- Backup power capability during outages
- Store more of their solar energy
- Reduce electricity purchased from the grid
- Add backup power protection
Before and After Adding Battery Storage
Before installing a battery:
Solar powers the home during the dayExtra energy exported to the gridElectricity purchased from the grid at night
Typical remaining bill:
~$150/month
After installing a battery:
Solar energy stored during the dayStored energy powers the home in the evening
Battery lease: $85/monthBattery credit: –$54/month
Effective cost:
~$31/month
Actual results depend on:
- Solar system size
- Household electricity usage
- Electric plan
- Battery capacity
Use the solar power your system already produces.
The Light Battery Program™ May Be Right If You:
San Antonio homeowners often value:
Battery integration supports all three.
Municipal Structure Doesn’t Eliminate Energy Strategy
CPS Energy provides stability.
But timing still matters.
Summer cooling demand continues to rise.
If your solar system was built only to offset usage — not manage timing — it may be under-optimized.
The Light Battery Program™ was designed to modernize that structure.
Check eligibility and review your options.
What homeowners are saying
Frequently Asked Questions
The $54 monthly credit is available under the current participating retail plan used within The Light Battery Program™. Eligibility and plan terms are reviewed prior to enrollment.
Eligible homeowners enrolled in the participating retail plan receive 1:1 net metering under current plan terms. Details are confirmed during the qualification process.
The Light Battery Program™ is primarily structured as a lease model, allowing homeowners to add storage without large upfront investment.
Total bill impact depends on system size, usage patterns, and rate structure. Many homeowners reduce grid exposure significantly, but outcomes vary.
When configured for backup, the battery can power designated circuits or the home during grid interruptions and recharge from solar during daylight hours.
Get your solar system back to full performance
Don't let hidden issues cost you money. Let's fix it fast.
By submitting or calling, you consent to receive calls and SMS from The Light Group USA at the number provided. Reply STOP to opt out. See our Privacy Policy.
Related services
Continue learning
30% Federal Tax Credit for Solar Batteries
Yes — solar batteries may qualify for a 30% Federal Tax Credit. Here's what San Antonio homeowners need to know...
Read article Battery UpgradesAdd a Battery to Your Existing Solar System in Texas
How to upgrade an existing residential solar system with battery storage in San Antonio, Texas...
Read article Solar BasicsAre Solar Panels Worth It? What You Need to Know
At The Light Group, we specialize in residential and commercial solar installation...
Read article