A permanently installed standby generator typically costs $7,000-$22,000 in the U.S., including equipment and standard installation; larger or complex projects can exceed $30,000. The standby generator cost depends chiefly on generator capacity, fuel connection, electrical work, transfer switch, and local labor rates.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Installed residential system | $7,000 | $13,500 | $22,000 | Equipment, standard labor, and transfer switch |
| Generator equipment | $3,500 | $7,500 | $13,000 | Typically 10-26 kW; larger units cost more |
| Installation labor | $1,500 | $3,500 | $7,000 | Higher where electrical or gas work is extensive |
| Transfer switch | $500 | $1,200 | $2,500 | Equipment and installation may be priced together |
What a 10- to 26-kW standby generator costs installed
A basic 10- to 14-kW system often totals $7,000-$12,000 installed and can cover selected essential circuits or a smaller home. A 16- to 22-kW system commonly lands at $10,000-$18,000, while a 24- to 26-kW whole-home setup may reach $14,000-$22,000 or more.
These estimates assume a permanently mounted air-cooled unit, automatic transfer switch, typical natural-gas or propane connection, and ordinary access. Premium brands, difficult trenching, long fuel lines, or a larger liquid-cooled generator raise the quote. Assumptions: U.S. residential project, standard equipment, normal access, and no major service-panel replacement. For many homes, a complete installed budget of $10,000-$18,000 is a practical starting point.
How generator equipment, electrical work, and fuel lines shape the quote
Contractors may bundle equipment and labor, so the estimate should identify what is included. Comparing line items helps reveal whether the price covers the automatic switch, startup, permits, and fuel connection—not just the generator itself.
| Quote component | Typical price | Common basis | What can raise it |
|---|---|---|---|
| Generator and controller | $3,500-$13,000 | 10-26 kW unit | Higher output, brand, or liquid cooling |
| Transfer switch and wiring | $1,000-$3,500 | Switch, connections, circuit work | More circuits or panel changes |
| Labor and setup | $1,500-$5,000 | About 12-30 crew hours | Long runs, difficult access, or extra trades |
| Gas piping or propane work | $500-$3,000 | Connection and typical short run | Long piping, tank, meter, or regulator changes |
| Permits, pad, and startup | $300-$1,500 | Local approvals and base | Inspection requirements or site preparation |
Ask for separate equipment, electrical, fuel, permit, and startup charges before accepting a bundled quote. Costs overlap when contractors package multiple tasks, so these rows are not necessarily additive.
How kilowatts, gas capacity, and site distance change the price
Capacity is a major cost driver. Moving from a 14-kW unit to a 22-kW model can add roughly $1,500-$4,000 for equipment and may require a larger gas line or electrical setup. Homes with central air, electric ranges, well pumps, or large electric water heaters may need load calculations before sizing.
Fuel supply can alter the estimate as much as generator size. A natural-gas line needing less than 20 feet of new piping may fit a standard installation; runs beyond 50 feet, undersized meters, or trenching can add $1,000-$4,000 or more. A propane system may also require a tank, typically adding $1,500-$4,000 when a suitable tank is not already available. Confirm the fuel supply can support the unit at full load.
How many labor hours does a home generator installation take
A straightforward installation often takes one to two days, with a two- or three-person crew working about 12-24 hours in total. Electrical connections, mounting, fuel hookup, testing, and inspection scheduling determine the actual time. Complex jobs can require several visits and 30 or more crew hours.
At a blended labor rate of $75-$150 per hour, 20 crew hours represent $1,500-$3,000 before equipment, permits, or subcontracted plumbing work. The number is a planning illustration, not a separate billable-hours guarantee, because contractor estimates often price the full project. Check whether the quote includes commissioning and the final inspection visit.
Why standby generator prices differ between U.S. regions
Installed prices in lower-cost rural markets may be about 10%-20% below a comparable project in a high-cost metropolitan area. Dense urban markets and parts of the Northeast or West Coast can run 10%-25% above a national midpoint because of higher labor, permitting, access, and utility coordination costs.
These are broad comparisons, not fixed regional price lists: fuel availability and contractor competition can reverse the pattern locally. Rural sites may save on labor but pay more for travel, trenching, or propane delivery. Compare at least two local quotes using the same capacity and installation scope.
What transfer switches, panels, and permits add to the price
An automatic transfer switch is essential for safe changeover between utility power and generator power. A standard switch may be included in a turnkey price; separately, equipment and installation often total $1,000-$3,500. A service-panel replacement can add $1,500-$4,000, while a service upgrade or substantial rewiring may push electrical work higher.
Permit and inspection charges commonly fall around $100-$800, depending on jurisdiction and project requirements. A concrete or composite pad, delivery, and placement may add $300-$1,500. Verify whether the estimate includes permits, delivery, pad, wiring, and required code updates.
Three installed quotes for essential circuits and whole-home backup
| Example scope | Equipment | Labor and other work | Estimated total |
|---|---|---|---|
| 10-kW unit, selected circuits, short gas run | $4,000-$5,500 | $2,500-$4,000 | $6,500-$9,500 |
| 18-kW unit, typical home, standard switch | $6,000-$8,500 | $4,000-$6,000 | $10,000-$14,500 |
| 26-kW unit, larger home, panel and fuel upgrades | $9,000-$13,000 | $7,000-$12,000 | $16,000-$25,000 |
The examples assume ordinary residential access and vary with local labor and permitting. The 18-kW example works out to roughly $560-$805 per kW installed, but this ratio is only a comparison tool; fixed wiring and setup costs make smaller systems more expensive per kilowatt. Match each quote to the same load coverage and site conditions.
Which installation choices can lower the generator bill
Request a load calculation before choosing the largest unit. Backing up essential circuits instead of every appliance may allow a smaller generator and transfer switch. Keep the unit near the electrical panel and fuel source when code clearances and manufacturer requirements permit, reducing cable, piping, and trenching expense.
Ask whether existing propane storage, a suitable pad, or compatible electrical equipment can be reused. Compare equivalent brands and warranties, but avoid dropping required safety devices or permitting. Scheduling before peak storm season may improve contractor availability, though timing does not guarantee a discount. The largest controllable savings usually come from right-sizing capacity and limiting unnecessary site upgrades.