Generator Installation Cost in San Antonio, TX

An 18–22kW Generac Guardian in San Antonio, TX runs $9,000–$15,000 installed — unit, automatic transfer switch, concrete pad, 10–20 ft gas line, and permits. Long gas runs or propane tank installs add $2,000–$6,000.

A 14kW unit covers essentials (HVAC, fridge, well pump, lights) for most San Antonio, TX homes under 2,500 sq ft. Whole-home coverage with central AC, EV charging, and electric range typically needs 22–26kW.

Permit fees, utility coordination, existing service condition, panel brand, wire runs, drywall repair, and local labor rates all move the number. San Antonio, TX jurisdictions with strict inspection cycles trend toward the high end.

Many San Antonio, TX electricians offer 0% promotional financing through GreenSky, Synchrony, or Service Finance. Federal IRA tax credits (up to 30%) and local utility rebates can offset $500–$4,000 depending on the scope.

Yes — get 3 licensed, insured bids. Watch for quotes that come in significantly below the $6,000–$22,000 range in San Antonio, TX; they usually exclude permit, drywall repair, or required code upgrades.