How much does it cost to install a standby generator at home?

The cost to install a home standby generator is confirmed after an on-site assessment because equipment size, fuel type, and installation needs vary. The biggest driver is the generator’s kilowatt capacity required to handle your home’s loads. Roman Home Services offers Generac and Briggs & Stratton options and provides certified, turn-key installation including gas piping, so your quote reflects the complete system, not just the unit. Our team regularly installs and services standby systems across the Waukesha area. If you’re in our Home Protection Plan, members receive 5% off major equipment installations.

Your final price typically depends on:

• Generator size (8–60 kW options)
• Fuel source and piping distance (natural gas or LP)
• Transfer switch and electrical upgrades
• Site location, pad, and venting clearances

Book a sizing visit to get a clear, fixed price in writing before any work begins.

Updated: 2026-03-12

Need help in Waukesha, WI? Call (414) 671-9935 or book online. "Everything was setup and cleaned up before they left." — Hilde M.