FOR ELECTRICAL CONTRACTORS AND GENERATOR DEALERS

Price the run, the switch, and the fuel — not a flat $8,000 hang.

Homeowners search “how much to install a standby generator” and come back with one number. A 22 kW natural-gas hang beside the house is not a far-yard propane set with a 400 A automatic transfer switch. Enter the machine, the service, the pad, and the setback. You get the installed price, dollars per kW, and how many times a typical hang this house really is.

The machine and the house

The feeder follows the generator nameplate. The transfer switch follows the service. Mixing those two is how a 200 A bid fails on a 400 A house.

Your rates

Starting hours and material dollars are takeoff points, not a standard. Replace them with the truck’s last invoice.

Hand the customer a proposal

The price above is for you. This is the page you print or save as a PDF and give to the customer — your details, their details, the scope, the deposit split, and a line for them to sign. Your business details are saved on this device so you only type them once; the customer’s details are never saved.

Everything on the printed page is text you typed or a number this calculator worked out. It contains no warranty, lien, or cancellation wording — those depend on your jurisdiction and your contract, and this tool is not the place to invent them.

YOUR BID

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installed price

Walk-away (total cost)
Profit at target margin
Labor hours
Loaded wage
Labor cost
Materials
Overhead
Effective billing rate
Dollars per kW
Nameplate / feeder breaker
Copper
Vs a typical 22 kW NG hang

Labor split

Common questions

How much should I charge to install a standby generator?

There is no flat installed price. A typical 22 kW natural-gas hang beside the house is a different job from a far-yard propane set with a 400 A automatic transfer switch. This calculator prices the feeder, the ATS, the pad, the fuel line, and the setback from your own wage and material inputs.

Is this a load calculation or a code ruling?

No. Outputs are arithmetic on the numbers you enter. The recommended-kW hint is a starting point, not a NEC 220 or manufacturer load calculation you can stamp or submit.

How much more does propane cost than natural gas for a standby install?

On a 15-foot fuel line at this calculator's default wage, burden, overhead, and margin, switching from natural gas to propane adds about 2.1 labor hours and $475 in materials (the LP regulator kit, the tank hookup, and pricier pipe) -- roughly $974 more on the bid ($6,106.00 to $7,080.12). That is on top of the tank itself, which this calculator does not price.

Want the margin, walk-away price and overrun headroom as well, or pricing a different trade? Price this job in the Bid Price Engine, one calculator for 121 trades.