How much does a whole-house generator cost installed?
Whole-house generator installation runs $4,500 for a small 10kW unit with limited transfer switch, $9,500 for a typical 18–22kW automatic standby with concrete pad, and $18,000+ for 26kW+ units with full electrical and gas-line work.
Quick price points (2026)
| Tier | Cost | Unit |
|---|---|---|
| Low | $4,500 | installed |
| Typical | $9,500 | installed |
| High | $18,000 | installed |