Generator Cost Guide
The home generator cost depends on the generator type, the size you need, and the complexity of the installation. For a 2,000-square-foot home, most whole-home standby generators range from $5,000 to $15,000 installed. Hiring the right licensed generator electrician ensures your backup power is installed safely and up to code.
Larger generators that power the whole home cost more than smaller units sized for essential circuits.
Natural gas, propane, and diesel units vary in price, with natural gas standby models being the most common choice.
An automatic transfer switch is required for standby generators and adds to the total cost.
Distance from the gas line and electrical panel, plus site prep, all affect the installation cost.
Pouring a concrete pad and prep work for the generator location adds to the overall project cost.
Local permits and code requirements, including gas line and electrical inspections, add to the total cost.
Your whole-home generator installation cost will vary based on the scope of work. Here is a general breakdown:
This is a job for a licensed electrician. Never attempt generator installation yourself without proper training.
Choose a generator sized for what you actually need instead of oversizing, which costs more upfront and to run.
Compare quotes from a few licensed electricians to understand fair pricing for your area.
Proper permits keep your installation code-compliant and avoid costly rework later.
Doing it right the first time prevents expensive issues and keeps your warranty valid.
Some generator problems signal a serious electrical hazard. Call a licensed electrician right away if you notice any of these warning signs:
A Generac whole-home standby generator for a 2,000-square-foot home typically costs $4,000 to $7,000 for the unit, plus installation.
Installation typically adds $3,000 to $8,000, bringing the total average cost of a Generac generator to around $7,000 to $15,000.
Generac, Kohler, and Briggs & Stratton are among the most reliable home standby generator brands available today.
Most 2,000-square-foot homes need a 20kW to 22kW standby generator to power essential circuits during an outage.
Most whole-home generator installations take one to two days, depending on site prep, gas line work, and electrical connections.