The answer to 'cost to install generator in Illinois' is that the cost can vary significantly depending on several factors. Generally, the total installation cost for a home generator in Illinois can range from $3,000 to $10,000 or more, depending on the size of the generator, the complexity of the installation, and any necessary electrical work.
The size of the generator is a major factor, as larger units designed to power an entire home will cost more than smaller portable models. The type of fuel the generator uses (natural gas, propane, or diesel) can also impact the price. Additionally, the accessibility of the installation site, any necessary electrical panel upgrades, and permitting requirements can all affect the overall cost.