Population 1,495,295 · 5 license-checked installers listed
Prefer to pick installers yourself? Check the box on any listing below to compare a few side by side or request quotes directly from the ones you choose.
Showing 5 of 5 installers. Check the box on any installer below to compare a few side by side or request quotes directly from the ones you pick.
5G Electric & Engineering LLC is a Texas-licensed, minority-owned electrical contractor (License #34569, Status: Active) based in San Antonio, founded by Master Electrician Gino Flores, offering Generac generator service alongside residential and commercial electrical work.
Current Power Technologies Inc is a Texas-licensed electrical contractor (License #38660, Status: Active) based in San Antonio, an authorized Generac, Kohler, and Cummins standby generator installer serving residential and commercial customers.
Frans Solar & Electric is a Texas-licensed electrical contractor serving the San Antonio area with whole-home backup generator installation, electrical design, solar, and EV-charger work.
Seven Petal Electric is a Texas-licensed electrical contractor serving San Antonio and the surrounding metro with whole-home standby generator installation, backup batteries, panel work, and EV charging.
Wattsmith Electric is a Texas-licensed electrical contractor serving San Antonio with standby-generator installation, portable-generator transfer-switch and interlock hookups, electrical repairs, and panel upgrades.
The only requirement to appear on this page is a checked state electrical license, confirmed against the state licensing board as part of our approval process, that's why every listing above shows "License checked." Installers are listed alphabetically by default, not ranked by quality, and no installer pays for placement in that order. LumoWatt does not sell ranking. If paid placement is introduced, it will be clearly labeled and will not change the standard list order. Use the sort dropdown above to re-order the list yourself by years in business or how recently we checked a listing. See our editorial policy and listing standards & verification methodology for the full details.
Whole-home standby generator installation in San Antonio typically costs $5,300-$12,200 all-in. See our full cost breakdown guide for what drives the price up or down, or use the generator sizing calculator for an estimate based on your own home.
This range is a LumoWatt estimate for San Antonio, not an independently published market study, based on the equipment and labor costs we typically see quoted in this area. Actual quotes vary by home size, generator capacity, and site conditions.
The City of San Antonio Development Services Department requires permit review for permanent backup-generator work, and CPS Energy has a backup-generator application process. Confirm requirements for the exact address before installation.
See the full Texas state permit overview.
Texas has one of the highest whole-home standby generator adoption rates in the US following the February 2021 winter storm grid failure (Winter Storm Uri) and continued summer-heat grid strain warnings from ERCOT.
Page data last updated August 22, 2026. Who runs LumoWatt.
