Generac generator cost in 2026, by model and installed
Generac lists its 10–28 kW home standby generators at $3,649–$8,159 for the generator alone, or $4,269–$9,509 with a transfer switch (Generac.com, checked October 23, 2026). Generac says installed systems usually total $8,000–$16,000 including the generator. These are list prices and national ranges, not a quote.
Generac generator prices by model
Generac publishes a "starting at" price for each home standby generator on its own site, in US dollars, and says to consult a local Generac dealer for pricing in your region[Generac]. The table below lists the 10 kW to 28 kW models that most homes compare. Generac sells two versions of most sizes: one with cellular monitoring and one with Wi-Fi monitoring (Generac labels several of the Wi-Fi models Guardian Series). Each size is also sold bundled with an automatic transfer switch.
| Size (kW) | Cellular, generator only | Cellular, with transfer switch | Wi-Fi, generator only | Wi-Fi, with transfer switch |
|---|---|---|---|---|
| 10 kW | $3,769 (G0072570) | $4,619 (G0073210) | $3,649 (G0071710) | $4,269 (G0071720, 16-circuit switch) |
| 14 kW | $4,889 (G0072580) | $5,949 (G0073230) | $4,569 (G0072230) | $5,389 (G0072250, whole-house switch) |
| 18 kW | $5,709 (G0072590) | $6,769 (G0073240) | $5,379 (G0072260) | $6,229 (G0072280) |
| 22 kW | $6,309 (G0072600) | $7,369 (G0073250) | $6,119 (G0070420) | $6,979 (G0070430) |
| 24 kW | $6,729 (G0072610) | $7,789 (G0073260) | $6,559 (G0072090) | $7,399 (G0072101) |
| 26 kW | $7,159 (G0073270) | $8,219 (G0073280) | $6,989 (G0072900) | $7,899 (G0072910) |
| 28 kW | $8,159 (G0072820) | $9,509 (G0073290, with ecobee thermostat) | Not listed | Not listed |
"Starting at" list prices and model numbers from Generac's standby generator page[Generac], checked October 23, 2026. Prices exclude installation and change often. Dealer prices can differ.
Generac's product pages list these models as running on liquid propane or natural gas, and the kW in the name is the propane rating. On natural gas, output can be a little lower: the 22 kW cellular model is rated 22 kW on propane and 21 kW on natural gas[Generac]. Generac's larger RG and XG series units cost much more, starting at $13,669 for a 25 kW model (RG02515A), and a 22 kW unit built for California and Massachusetts emissions rules lists at $14,339 (RG02224)[Generac].
Generac generator cost including installation
The generator is only part of the bill. Generac says that, on average, a home standby generator costs $8,000–$16,000 installed, including the generator itself[Generac]. HomeGuide, a national cost guide, puts Generac units at $2,000–$5,000 for 7–24 kW, plus $3,000–$5,000 for installation[HomeGuide]. HomeGuide's unit prices are lower than Generac's current list prices above, so treat them as a rough guide and rely on a written dealer quote.
Here is what an installer charges for, with HomeGuide's national figures[HomeGuide]:
- Automatic transfer switch: $600–$2,500, unless you buy a bundle that includes one.
- Pad: $150–$400 for a pre-cast pad. Generac says the dealer prepares a concrete slab or pea gravel base[Generac].
- Gas line: $12–$25 per foot. Generac says homes closer to the gas line and meter generally cost less to install[Generac].
- Electrical wiring: $6–$8 per foot, with electricians at $40–$100 an hour.
- Propane tank if you don't have natural gas: $400–$1,800.
- Permits: $80–$450 for all permits combined, depending on your city.
HomeGuide puts a typical whole-house standby install, all brands, at $6,000–$11,000 in total[HomeGuide]. For the full cost breakdown, fuel costs and a step-by-step estimate worksheet, see our whole house generator cost guide.
Which size Generac does your home need?
Start with the loads you must run during an outage, not the size of your house. Central air conditioning is usually the biggest load, and motors can need about double their running wattage to start[HomeGuide]. Our generator cost by size (kW) table shows what each size band typically covers. Ask the dealer for a load calculation before you pick a model.
Generac vs a battery or power station
A gas standby generator can run for days as long as fuel keeps flowing, and it starts on its own when the power drops. A home battery is quiet and has no fuel to manage, but it runs only as long as its stored energy (or solar recharging) lasts. A portable power station is smaller still and covers a few devices or appliances, not the whole house. If your outages are short, a battery or power station may be enough. Compare the options in our standby vs portable vs battery guide and our portable power station picks.
Is a Generac worth it where you live?
A standby generator pays off most where outages are frequent or long, or where losing power is dangerous: medical equipment, sump or well pumps, or extreme heat and cold. Our state pages use the U.S. Energy Information Administration's Form EIA-861 data (data year 2024) to show how often and how long the power goes out. Start with outages by state, or see Texas, Florida and North Carolina.
Tax credits and rebates
We found no federal tax credit for a Generac or any other fuel-burning standby generator. The IRS Residential Clean Energy Credit covered solar, wind, geothermal, fuel cells and battery storage of at least 3 kWh, and the IRS says it isn't available for property placed in service after December 31, 2025[IRS]. Generac advertises dealer financing from $109 a month[Generac]; read the terms before you sign. Some utilities and states run their own programs, so ask yours before you buy.
FAQ
How much is a 22kW Generac installed?
Generac lists its 22 kW home standby generator from $6,119 (Wi-Fi model G0070420) or $6,309 (cellular model G0072600), or $6,979 to $7,369 bundled with a transfer switch. Generac says installed home standby systems usually total $8,000 to $16,000 including the generator. HomeGuide puts the 22 kW unit at about $5,000 plus $3,000 to $5,000 for installation. Your dealer's written quote is the real number.
Why do Generac quotes vary so much?
Most of the difference is site work, not the generator. Generac says homes closer to the gas line and meter cost less to install. HomeGuide prices gas line work at $12 to $25 per foot, wiring at $6 to $8 per foot, a transfer switch at $600 to $2,500, and a propane tank at $400 to $1,800 if you have no natural gas. Permit fees and dealer pricing vary by area.
How long does Generac installation take?
Generac says the installation itself usually takes a matter of hours, but getting ready for it can take multiple weeks. The wait depends on dealer availability, site preparation, gas line work and getting a permit. Ask your dealer for a timeline when you get the quote, and ask whether the permit and inspection are included.
Does Generac sell direct or through dealers?
Generac's site shows “starting at” prices, but says to consult your local Generac dealer for pricing in your region. Its installation guide says an authorized Generac dealer contacts you for a free at-home consultation, then handles the pad, fuel line and transfer switch. Get quotes from more than one authorized dealer if you can.