San Antonio, TX
Battery backup for San Antonio homes and businesses
San Antonio sits in CPS Energy territory, the largest municipally owned electric utility in the country, with hospitality along the River Walk and a dense healthcare and retail base throughout Bexar County. ERCOT grid emergencies still hit here, and Uri in 2021 produced multi-day outages across the city. Eos installs automatic battery systems for homes and businesses that take over the moment the grid drops, no fuel and no manual switchover.
Why San Antonio is buying batteries
San Antonio came through the 2021 winter storm with significant outages and a public reckoning over CPS Energy planning and ERCOT coordination. The 2023 ice storm produced more localized outages tied to tree damage in older neighborhoods. Both events drove sustained battery interest across Bexar County.
San Antonio homes range widely in age, from historic 1920s bungalows in King William and Government Hill to modern Stone Oak and Cibolo Canyons builds. Older homes sometimes need a panel upgrade or sub-panel as part of the battery scope; newer builds typically have clean 200A service and straightforward placement.
For homes with solar already in place, we add storage that captures solar production for use overnight or during outages. CPS Energy has well-defined rules for residential solar+battery interconnection, which we handle on your behalf.
How the system works
Automatic protection
When the grid goes down, the battery switches on in under 20 milliseconds. No manual action required.
Sized for your home
We assess actual usage and configure coverage from essentials only to full-home including AC and heat pump.
Permits and utility
We file with City of San Antonio Development Services and submit the CPS Energy interconnection notification on your behalf.
San Antonio neighborhoods we cover
We install across San Antonio and the surrounding Bexar County communities.
Battery backup for San Antonio businesses
San Antonio commercial activity centers on the River Walk and Pearl District, the South Texas Medical Center, retail at La Cantera and The Rim, and small offices throughout Stone Oak and Alamo Heights. All share the same CPS Energy distribution that has failed during winter storms.
Hospitality and tourism
Keep refrigeration, point of sale, lighting, and HVAC running through outages so you do not lose perishable inventory or have to close mid-shift.
Healthcare and clinics
Protect imaging equipment, sterilizers, refrigerated medications, and electronic health records during grid disturbances. No noisy generator outside the lobby.
Retail and offices
Keep servers, payment systems, and HVAC online so staff can keep working when the grid blinks. Silent, automatic switchover within milliseconds.
San Antonio zip codes we install in
San Antonio spans dozens of zip codes across Bexar County. Below are some of the most common.
78209
Alamo Heights and Terrell Hills. Older homes with mature panel infrastructure; occasional upgrades needed.
78212
Olmos Park, Monte Vista, and the historic city core. Mix of 1920s through 1960s construction.
78230
Northwest San Antonio. Mid-century and newer subdivisions with mostly 200A service.
78248
Stone Oak corridor north of Loop 1604. Modern master-planned communities with clean panel infrastructure.
78258
Hollywood Park, Hill Country Village, and surrounding far-north neighborhoods.
78216
North-central San Antonio including parts of Castle Hills and Castle Oaks.
Common questions from San Antonio homes and businesses
Which utility serves San Antonio?
CPS Energy is the transmission and distribution utility for San Antonio, including the city itself and most of Bexar County. CPS Energy is the largest municipally owned electric utility in the United States. Battery installations require a CPS interconnection notification, which our team handles.
Did the 2021 winter storm affect San Antonio?
Yes. CPS Energy customers experienced multi-day outages during Winter Storm Uri in February 2021, with rolling blackouts that turned into extended cold snaps for some neighborhoods. The 2023 ice storm also produced localized multi-day outages in the older parts of the city. Battery interest in San Antonio has stayed strong since.
How long is the lead time for a San Antonio installation?
Outside the Greater Houston metro, scheduling is slightly longer than our typical 1 to 2 week window. San Antonio installations typically run 4 to 6 weeks total from first contact to a working system, including permit processing through City of San Antonio Development Services and CPS coordination.
Does CPS Energy support residential battery interconnection?
Yes. CPS Energy has a defined interconnection process for residential battery storage, including backup-only configurations and solar+battery installs. We submit the interconnection notification on your behalf and coordinate any utility-side work required.
Do you install battery systems for businesses in San Antonio?
Yes. We install commercial battery storage for San Antonio businesses including hospitality and tourism along the River Walk and Pearl District, healthcare facilities and clinics across the South Texas Medical Center, retail at La Cantera and The Rim, and small offices throughout Stone Oak and Alamo Heights. Commercial systems are sized to the building load profile and quoted per project. See our commercial solutions page for details on monitoring, peak shaving, and continuity engineering.
Residential pricing in San Antonio
Installed home systems range from $9,915 to $23,030 depending on capacity. In-house financing from $87.45/month with no credit score impact to check eligibility.
Commercial systems are sized per facility and quoted by project. See commercial solutions or request a tailored quote.
Contact us
Coverage area: San Antonio and the surrounding Bexar County communities.
Scheduling typically available within four to six weeks for San Antonio area installations.
Ready to protect your San Antonio property?
Talk to a specialist or explore plans online.