Population 281,000 · 3 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 3 of 3 installers. Check the box on any installer below to compare a few side by side or request quotes directly from the ones you pick.
Bates Electric serves St. Louis with whole-home Generac standby-generator design, installation, transfer-switch integration, maintenance, and emergency electrical service.
Hoffmann Brothers provides residential and commercial standby-generator installation, repair, maintenance, and electrical integration throughout the St. Louis area.
Streib Company is a St. Louis electrical contractor installing and maintaining whole-home and commercial backup generators and related electrical systems.
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 St. Louis typically costs $7,000-$15,100 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 St. Louis, 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.
St. Louis requires electrical permits and inspections for permanently installed standby generators, transfer switches, and associated electrical work.
See the full Missouri state permit overview.
Missouri experiences severe thunderstorms, tornadoes, damaging straight-line winds, ice storms, and occasional flooding. Kansas City and Springfield face frequent severe-weather outages, while St. Louis is also exposed to high winds, ice, and Mississippi River-region storms.
Page data last updated July 30, 2026. Who runs LumoWatt.
