How Much Does a Home Generator Cost Installed?
A whole home standby generator costs $7,000–$25,000 installed, with most homeowners paying $10,000–$16,000 for a 20–22 kW unit on natural gas. Kohler generators run $500–$2,000 more than comparable Generac units. Installation adds $3,500–$8,000 depending on your location.
Use our free cost calculator to get a personalized estimate for your home, or get matched with vetted local installers for a free quote.
2026 Home Generator Cost Guide
Costs vary by generator size, fuel type, and location. Here are the three most common installation tiers based on real data from thousands of projects nationwide.
What's Included in Generator Installation Cost?
A complete whole-home generator installation involves several components beyond the generator unit itself. Understanding each cost category helps you evaluate quotes and avoid surprises.
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Kohler vs. Generac: Which Should You Choose?
The two most trusted home generator brands compared side by side.
Kohler
Premium ChoiceGenerac
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