The answer to 'cost to install generator' is that the cost can vary widely depending on several factors. Typically, the installation of a whole-home backup generator can range from $5,000 to $15,000 or more. The size of the generator, the complexity of the electrical work required, and the accessibility of the installation site are the primary drivers of the cost.
Homeowners should expect to pay more for larger generators, complex electrical panel upgrades, and difficult access to the installation location. Additionally, the cost of permits, labor, and any necessary landscaping or construction work can also impact the overall price. It's essential to get multiple local quotes from licensed and insured electricians to get an accurate estimate for your specific project.