What Is the Average Cost to Install a Whole Home Generator?

The average cost to install a whole home standby generator varies by generator size and installation complexity, and final pricing is confirmed after an on-site assessment with a tailored quote. The biggest cost driver is the kilowatt capacity required to run your essential loads during an outage. We start with a home energy audit to right-size the unit and avoid overspending on capacity you don’t need. As licensed Generac dealers, we handle permitting, fuel and electrical connections, testing, and the customer walkthrough in one coordinated project. We install and maintain systems across Northern Colorado, including work in the Berthoud area. Flexible financing options are available.

Key factors that move price up or down:

• Generator capacity (kW) based on total power load
• Fuel choice and routing (natural gas or propane)
• Site preparation, pad, and placement requirements
• Electrical scope, including transfer equipment and code compliance

Schedule a sizing visit so we can confirm your load, permit needs, and provide a clear written quote. <br/> Updated: 2026-03-31 <br/> Need help in Berthoud, CO? Call (970) 444-5951 or book online.