The generator is only part of the price
A standby generator installation has several pieces: the generator itself, the transfer switch, the pad, the fuel line or propane tank, electrical wiring and conduit, permits and inspections, and labor. The equipment often accounts for a bit less than half of the total.
What the manufacturers publish
As an example of equipment pricing, Generac's website listed starting prices of about $3,769 for a 10 kW unit, $4,889 for 14 kW and $5,709 for 18 kW in October 2026. Those are equipment-only starting prices and do not include installation, a transfer switch on some models, fuel work or permits.
What changes the installed price most
Size and brand set the equipment cost. Distance from the gas meter to the generator, the gas meter capacity, whether you need a propane tank, the distance to your electrical panel, the type of transfer switch, the pad type and local permit fees all move the total.
Ways to save without cutting corners
Right-size the generator rather than buying more than you need. Use load management so a smaller unit does more. Place the generator close to the gas meter and panel where the code allows. Combine the project with other electrical work. Never skip permits or hire an unlicensed installer to save money; it can void a warranty and cause trouble with your insurance.
Ongoing costs
Plan for annual maintenance, fuel while it runs and the occasional repair. A maintenance plan spreads that cost and keeps the warranty healthy.
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