The answer to 'cost to install generator' is that the cost can vary significantly depending on several factors, but typically ranges from $3,000 to $15,000 or more. The size and type of generator, the complexity of the installation, and your location are the main drivers of the total cost.
Larger whole-home generators on the higher end of the range will require more extensive electrical work, including upgrading your electrical panel and running new wiring. Smaller portable or standby generators on the lower end may only need a dedicated circuit and basic installation. Getting quotes from local electricians is essential to understand the specific costs for your home and needs.