The answer to 'how much does generator installation cost in Illinois' is that the cost can vary widely depending on several factors. Typically, generator installation in Illinois ranges from $3,000 to $10,000 or more, with most homeowners spending between $5,000 to $8,000 on average.
The final cost will depend on the size and type of generator, the complexity of the installation, the accessibility of the installation site, and any necessary electrical work or permits required. Larger, whole-home generators will generally cost more than smaller, portable units. Additionally, the cost can be impacted by the brand, fuel type, and any special features or customizations. It's important to get quotes from multiple licensed electricians in your local area to determine the most accurate pricing for your specific project.