How much does a home battery cost in San Antonio?
By Our research team · Last verified · Methodology
Most home battery installs in San Antonio cost $10,750–$17,300 for one 13.5 kWh battery like a Tesla Powerwall 3, installed. $13,800 is the typical price before any utility incentive.
How we get this data- Typical
- $13,800
- Low end
- $8,400
- High end
- $21,500
Want an exact price for your job?
Tell us the job. Casey checks it by text, then up to 2 local battery installers send you a real quote. Free, no obligation.
Get my fair quote →The typical San Antonio price is $13,800, 6% below the US typical of $14,750.
San Antonio's price band
San Antonio is cheaper than 69% of the 195 US metros we price for home battery work.
Expect $10,750–$17,300 for one 13.5 kWh battery, $940–$3,250 more for whole-home backup, and $1,400–$4,200 more if a 100-amp panel has to go to 200 amps.
EnergySage's November 2026 San Antonio quotes average $1,000 per kWh before incentives, under its national average of $1,159. Winter Storm Uri in February 2021 left more than 4.5 million Texas homes and businesses without power, some of them for several days.
Every price here is before incentives, and there is no federal one left: the 30% credit for home batteries ended for expenditures after December 31, 2025, and the IRS treats the expense as made when the install is complete. Check your utility for a battery or demand-response program before you sign.
Comparing cities, or after the US-wide picture? See the national guide: Home battery cost in the USA.
$10,750–$17,300 installed in San Antonio for one 13.5 kWh battery such as a Tesla Powerwall 3, typically $13,800. Whole-home backup on two batteries is $15,450–$31,800. Verified November 2026. Get free San Antonio quotes →
- One 13.5 kWh battery, installed: $10,750–$17,300 ($13,800 typical)
- Whole-home backup gateway: add $940–$3,250; two batteries: $15,450–$31,800
- Panel upgrade if needed: $1,400–$4,200; permit and utility fees: $150–$970
- No federal tax credit for batteries installed after December 31, 2025
- Tighter, older installs: Downtown, Southtown & the Pearl; easier garage installs: Stone Oak, Alamo Heights & the Northside
Prices verified November 2026 · Cross-referenced against 57+ American pricing sources · See methodology
Installed prices before any utility or state incentive. San Antonio metro, re-verified November 2026. Comparison lines (generators, power stations) are shown so you can weigh the options.
| Service | Low | Typical | High |
|---|---|---|---|
| Tesla Powerwall 3 (13.5 kWh), installedinstalled | $10,750installed | $13,800 | $17,300 |
| Powerwall 3 Expansion unit (13.5 kWh), added at installinstalled | $4,750installed | $6,200 | $7,650 |
| Second battery added at install (Powerwall 3 or aPower 2)installed | $8,550installed | $9,500 | $11,850 |
| Enphase IQ Battery 5P (5 kWh), per unitinstalled | $5,650installed | $6,600 | $8,500 |
| Enphase IQ Battery 10C (10 kWh)installed | $10,350installed | $12,700 | $16,000 |
| FranklinWH aPower 2 (15 kWh) with aGateinstalled | $13,650installed | $16,950 | $21,650 |
| SolarEdge Home Battery (9.7 kWh)installed | $11,300installed | $14,400 | $18,850 |
| Other ~10 kWh battery (EG4, EcoFlow, Fox ESS, Canadian Solar)installed | $6,100installed | $10,350 | $15,550 |
| Two batteries for whole-home backup (27–30 kWh)installed | $15,450installed | $21,500 | $31,800 |
| Battery added to existing solar (AC-coupled)installed | $11,250installed | $14,250 | $18,250 |
| Battery without solar (charges from the grid)installed | $10,750installed | $13,800 | $17,300 |
| Whole-home backup gateway or transfer switchinstalled | $940installed | $1,700 | $3,250 |
| Critical-loads subpanel (partial backup)installed | $370installed | $940 | $1,650 |
| Main panel upgrade for a battery (100A to 200A)installed | $1,400installed | $2,350 | $4,200 |
| Permit and utility interconnection feesper job | $150per job | $440 | $970 |
| Battery service visit (monitoring, firmware, re-commissioning)per visit | $140per visit | $330 | $750 |
| Out-of-warranty battery replacement (remove old, install new)installed | $9,800installed | $12,850 | $16,350 |
| Standby generator, 20–24 kW (for comparison)installed | $8,050installed | $10,900 | $15,200 |
| Portable power station + home transfer panel, about 4 kWh (for comparison)installed | $3,900installed | $5,350 | $7,300 |
| Portable generator hookup: interlock kit and inletinstalled | $370installed | $580 | $800 |
Got it as a PDF or photo? Upload up to 3 quotes and compare →
Get free quotes from up to 2 local battery installers in San Antonio
Free · No obligation · About a minute
- 1The job
- 2Budget
- 3Your details
What do you need a price on?
Tap one to start.
What's your rough budget?
A ballpark is fine. It helps the battery installers who reply.
Where should they text you?
- Max 2 battery installers. No call floods.
- 100% free. No obligation.
- 🔒 Only your matched battery installers see your number.
By continuing, you agree to our Terms and to up to 2 battery installers contacting you by phone or text.
Check your phone
Prices verified November 2026 · Cross-referenced against 57+ American pricing sources · See methodology
Prices cover the San Antonio metro and assume one 13.5 kWh battery mounted on a garage or outside wall. Older homes in East Side & Southeast more often need panel work.
Home battery prices across San Antonio
Same battery, four price bands. The spread comes from panels, wall space and access: tighter and older in Downtown, Southtown & the Pearl, easier in Stone Oak, Alamo Heights & the Northside.
Downtown, Southtown & the Pearl
- Installed
- $11,600–$18,350 installed
- Typical job
- $12,650–$21,800 / one battery + whole-home backup
Older buildings, tight utility rooms and slower permit reviews. Batteries often end up on an outside wall, and condo or HOA approval can add weeks.
East Side & Southeast
- Installed
- $11,200–$17,650 installed
- Typical job
- $12,150–$20,950 / one battery + whole-home backup
Older homes with 100-amp panels are common here, so ask early whether the job needs a panel upgrade or a critical-loads subpanel.
West Side & South Side
- Installed
- $10,750–$16,800 installed
- Typical job
- $11,700–$19,950 / one battery + whole-home backup
Standard pricing for the metro. Most homes have room on a garage or outside wall, and the install is usually one day.
Stone Oak, Alamo Heights & the Northside
- Installed
- $10,750–$17,300 installed
- Typical job
- $11,700–$20,550 / one battery + whole-home backup
Newer homes, attached garages and room for two batteries. The battery price is standard; the second unit is where the bill grows.
Real home battery jobs in San Antonio
Here's what common home battery jobs cost in San Antonio in 2026, installed, before incentives.
Essentials backup: one battery + critical-loads panel
Fridge, furnace fan, lights, Wi-Fi and a few outlets on one 13.5 kWh battery. The battery is $10,750–$17,300 installed; moving those circuits to a critical-loads subpanel adds $370–$1,650.
Whole-home backup: one battery + gateway
A whole-home gateway or transfer switch ($940–$3,250) lets one battery run the whole panel during an outage. Central AC or a well pump may still need a second battery to start reliably.
Bigger home: two batteries
27–30 kWh for larger homes or longer outages. A Powerwall 3 plus an expansion unit sits at the low end; two full units or two FranklinWH aPower 2s sit at the top.
Adding a battery to solar you already have
An AC-coupled battery works next to your existing inverter. Expect $11,250–$14,250 for a straightforward job; older inverters or a full panel push it toward $18,250.
Older home: battery + panel upgrade
Many 100-amp panels have no room for a battery. Going to 200 amps adds $1,400–$4,200 in San Antonio, and doing it with the battery means one permit and one inspection.
How much does a home battery cost in San Antonio?
$10,750–$17,300 installed, with $13,800 the typical San Antonio price for a Powerwall 3-size battery. About $8,200–$10,000 of that is the battery, wherever you live. The rest is labor, wiring, permits and utility paperwork, and that is the part that changes from one San Antonio installer to the next.
There is no federal credit to take off these numbers any more. What can still cut the bill in San Antonio is a utility or state battery program, a second bid, and not buying more battery than you need. Two batteries ($15,450–$31,800) is more than many homes need. Figures re-verified against 57 sources in November 2026.
Home battery prices in San Antonio (2026): the lines on a quote
One battery is $10,750–$17,300 installed, whole-home backup adds $940–$3,250, and a panel upgrade adds $1,400–$4,200.
| Line on the quote | Low | Typical | High |
|---|---|---|---|
| Tesla Powerwall 3 (13.5 kWh), installed | $10,750 | $13,800 | $17,300 |
| Expansion unit, added at install | $4,750 | $6,200 | $7,650 |
| Whole-home backup gateway | $940 | $1,700 | $3,250 |
| Critical-loads subpanel | $370 | $940 | $1,650 |
| Main panel upgrade (100A to 200A) | $1,400 | $2,350 | $4,200 |
| Permit and utility fees | $150 | $440 | $970 |
| Battery service visit | $140 | $330 | $750 |
| Standby generator, 20–24 kW (comparison) | $8,050 | $10,900 | $15,200 |
Partial vs whole-home backup in San Antonio: the gap is the gateway ($940–$3,250) and, often, a second battery. If you only need the fridge, furnace and Wi-Fi through an outage, partial backup on one battery is the better buy.
What moves a home battery quote in San Antonio:
- Backup level — partial backup on a backup switch is cheapest; whole-home backup adds a gateway and often a second battery.
- The panel — a full or 100-amp panel can add $1,400–$4,200 for an upgrade.
- Where it mounts — a garage or outside wall near the panel is cheapest; long wire runs and trenching add labor.
- Brand and size — a 5 kWh Enphase unit and a 15 kWh FranklinWH are very different checks.
- Permits and the utility — $150–$970 in fees, plus the wait for permission to operate.
Ask every San Antonio installer for the same four things: the battery price, the backup equipment (switch, gateway or subpanel), the panel work, and permit and utility fees. Compare those lines, not the total. Get a quote for your battery install →
Home Battery Cost in San Antonio by Backup Level
Essentials backup on one battery is $10,750–$17,300, whole-home backup with a gateway is $11,700–$20,550, and two batteries for a larger home are $15,450–$31,800, before any utility incentive.
Worked example: a San Antonio home with a 200-amp panel and a garage wall next to it gets one Powerwall 3 at $13,800 plus a whole-home gateway at $1,700: $15,500. The same house with a 100-amp panel adds an upgrade at $2,350, for $17,850.
A larger home that wants central AC on backup usually needs two batteries ($21,500 typical) plus the gateway, about $23,200. For comparison, a 20–24 kW standby generator runs $8,050–$15,200 installed in San Antonio, plus fuel.
San Antonio Home Battery Costs by Battery
| Battery | Cost | Best for |
|---|---|---|
| Tesla Powerwall 3 — 13.5 kWh | $10,750–$17,300 installed | One box for whole-home backup · 10 yrs, 70% capacity |
| Powerwall 3 Expansion — adds 13.5 kWh | $4,750–$7,650 installed | More hours of backup on the same inverter |
| Enphase IQ Battery 5P — 5 kWh each | $5,650–$8,500 installed | Stacking small units on Enphase solar · 15-yr warranty |
| Enphase IQ Battery 10C — 10 kWh | $10,350–$16,000 installed | Enphase homes wanting one larger unit · 15 yrs, 60% capacity |
| FranklinWH aPower 2 — 15 kWh | $13,650–$21,650 installed | Big loads and long outages · 15 yrs, 70% capacity |
| SolarEdge Home Battery — 9.7 kWh | $11,300–$18,850 installed | Homes with SolarEdge inverters · 10 yrs, 70% capacity |
| Other ~10 kWh batteries | $6,100–$15,550 installed | Lower upfront price; check local installer support |
| Two batteries — 27–30 kWh | $15,450–$31,800 installed | Larger homes, central AC, well pumps |
| Standby generator, 20–24 kW (comparison) | $8,050–$15,200 installed | Outages that last days, homes with natural gas |
Battery vs installation: where a San Antonio quote goes
The battery itself is about $8,200–$10,000 for a Powerwall 3 anywhere in the US. On a $13,800 San Antonio job that leaves roughly $4,700 for labor, wiring, the backup switch or gateway, permits and the utility paperwork.
That is why San Antonio bids for the same battery can sit $6,550 apart. One installer's $13,800 may include a whole-home gateway and permit fees; another's $12,700 may not. Line up the items before you compare totals.
What's included in a San Antonio battery quote (and what costs extra)
A standard quote covers the battery, mounting, wiring to your panel, a basic backup switch, commissioning and the app setup. The headline price often leaves out:
- Whole-home backup gateway — $940–$3,250 if you want the whole panel backed up
- Panel upgrade — $1,400–$4,200 to go from 100 to 200 amps
- Critical-loads subpanel — $370–$1,650 for partial backup on older panels
- Permit and utility fees — $150–$970, plus bollards or a heat alarm if the battery goes in a garage
Ask for the warranty terms in writing: years, capacity guaranteed at the end, and who services the battery locally.
Your local market
San Antonio is a mid-size market for home batteries. The hardware price is national; labor, permits and how many installers compete for the job are local, and they decide whether a quote lands nearer $10,750 or $17,300.
How much of the house you back up
Partial backup on one battery is $10,750–$17,300. Whole-home backup adds a gateway ($940–$3,250) and, in bigger homes, a second battery.
Your electrical panel
A crowded or 100-amp panel is the most common surprise. Upgrading to 200 amps adds $1,400–$4,200 in San Antonio; a critical-loads subpanel adds $370–$1,650.
Where the battery goes
Garages and outside walls are the usual spots. Model codes keep batteries out of bedrooms and living space, cap garage installs at 80 kWh, and call for impact protection where a car could hit the unit.
Brand and capacity
An Enphase IQ 5P is $5,650–$8,500 per 5 kWh unit, a Powerwall 3 $10,750–$17,300 for 13.5 kWh, and a FranklinWH aPower 2 $13,650–$21,650 for 15 kWh.
Solar or no solar
A battery added to existing solar is $11,250–$18,250; a grid-charged battery with no solar is $10,750–$17,300. A battery installed with new solar shares one permit and one crew.
Permits and the utility in San Antonio
Expect $150–$970 in permit and interconnection fees and a wait for the utility's permission to operate if the battery ties into solar.
- Get two or three bids.Same battery, different labor lines. San Antonio quotes for one 13.5 kWh battery run $10,750–$17,300; a second bid is the fastest way to find the padding.
- Back up the essentials, not the whole house.A critical-loads subpanel ($370–$1,650) keeps one battery on the circuits that matter. A second battery costs $8,550–$11,850.
- Ask about your utility's battery program.Programs that pay you to share the battery at peak times can return a few hundred dollars a year or more.
- Add storage at install time.An expansion unit added with the first battery is $4,750–$7,650. Coming back later means a second trip, a second permit and often a second full battery.
- Do the panel work with the battery.A 200-amp upgrade ($1,400–$4,200) done in the same job shares the permit, the inspection and the utility visit.
- Read the warranty before you pick a brand.Powerwall 3 and SolarEdge carry 10 years at 70% capacity; Enphase and FranklinWH carry 15 years. A longer warranty can be worth a higher price.
Before you pay a deposit to a San Antonio installer, get these in writing:
- The battery brand, model and usable kWh
- Backup type: partial (backup switch or subpanel) or whole-home (gateway)
- Any panel upgrade or subpanel, priced as its own line
- Where the battery mounts, and any bollards or heat alarm the code needs
- Permit, inspection and utility interconnection fees
- Warranty: years, capacity guaranteed and who services it locally
- Monitoring app setup and any utility program enrollment
- Payment schedule, and what happens if the utility approval is delayed
How much does a home battery cost in San Antonio?
$10,750–$17,300 installed for one 13.5 kWh battery, and $13,800 is typical. Whole-home backup adds $940–$3,250 for a gateway, and two batteries run $15,450–$31,800.
How much is a Tesla Powerwall 3 in San Antonio?
About $13,800 installed, within a $10,750–$17,300 range. An expansion unit adds 13.5 kWh for $4,750–$7,650 when it goes in with the first battery.
What does whole-home battery backup cost in San Antonio?
$11,700–$20,550 for one battery with a whole-home gateway, or $15,450–$31,800 for two batteries in a larger home or one with central AC.
Is there still a federal tax credit for home batteries in San Antonio?
No. The 30% Residential Clean Energy Credit ended for expenditures made after December 31, 2025, and the IRS treats the expense as made when installation is complete. Ask your utility about battery or demand-response programs instead.
How much does it cost to add a battery to existing solar in San Antonio?
$11,250–$18,250 for an AC-coupled battery next to your existing inverter. A battery without any solar, charging from the grid, is $10,750–$17,300.
Do I need a panel upgrade for a battery in San Antonio?
Not always. Many 200-amp panels take a battery as they are. A full or 100-amp panel may need an upgrade ($1,400–$4,200) or a critical-loads subpanel ($370–$1,650).
Home battery or standby generator in San Antonio?
A 20–24 kW standby generator is $8,050–$15,200 installed and runs as long as the fuel lasts. A battery is $10,750–$17,300, is silent, needs no fuel and can cut bills on time-of-use rates, but covers hours to a day or so per 13.5 kWh unless solar recharges it.
How much do Enphase and FranklinWH batteries cost in San Antonio?
Enphase IQ Battery 5P: $5,650–$8,500 per 5 kWh unit; IQ Battery 10C: $10,350–$16,000. FranklinWH aPower 2 (15 kWh): $13,650–$21,650, installed.
What permits does a home battery need in San Antonio?
An electrical permit at minimum, often a building or fire review, and your utility's approval if the battery ties into solar or can send power to the grid. Fees run $150–$970. Garage installs may need a heat alarm and bollards.
How long does a home battery last, and what does upkeep cost?
Warranties run 10 years (Powerwall 3, SolarEdge) to 15 years (Enphase, FranklinWH), guaranteeing 60–70% capacity at the end. Upkeep is mostly app monitoring; a service visit costs $140–$750 once the warranty is over.
Prices verified November 2026 · Cross-referenced against 57+ American pricing sources · See methodology
Prices for the San Antonio metro area, November 2026. Outer suburbs may vary.
Get a fair home battery quote in San Antonio
Local battery installers · Free quotes · No obligation, no spam.