Whole House Generator Installation Cost $2,500 to $8,500 Labour.
The labour-only side of the project. Across all residential standby installs, the labour component runs 40 to 50 percent of total project cost. This page breaks the labour down by line item, by generator size, and by region so you can verify an installer quote against realistic ranges before signing.
Labour Cost by Generator Size
| Generator Size | Gas Line | Electrical | Pad | Permit / Inspect | Total Labour |
|---|---|---|---|---|---|
| 10 kW | $400 - $800 | $900 - $1,400 | $300 - $600 | $200 - $500 | $2,500 - $3,800 |
| 14 kW | $500 - $1,000 | $1,000 - $1,500 | $300 - $700 | $200 - $500 | $2,800 - $4,200 |
| 18 kW | $700 - $1,400 | $1,300 - $2,000 | $300 - $700 | $300 - $600 | $3,500 - $5,500 |
| 22 kW | $1,200 - $2,000 | $1,500 - $2,500 | $400 - $800 | $300 - $700 | $5,000 - $8,500 |
| 26 kW | $1,400 - $2,400 | $1,800 - $3,000 | $500 - $1,000 | $400 - $900 | $6,000 - $10,000 |
| 48 kW | $2,000 - $3,500 | $2,500 - $4,500 | $700 - $1,400 | $500 - $1,500 | $10,000 - $16,000 |
The Four Trades Involved in a Standby Install
Most homeowners assume the generator dealer does everything. In practice, a standby install usually involves four distinct trades, and the labour cost reflects that complexity. Some installers carry all four in house; many sub out one or two. Either way, you are paying for the trade work.
Trade one: licensed electrician. The transfer switch installation, panel interlock, conduit and wire run from generator to ATS, panel feeder upsize where needed, grounding and bonding, and final electrical commissioning all require a licensed electrician. Per BLS Occupational Employment Statistics, the May 2024 median hourly wage for U.S. electricians is $30.92, which translates to billable rates of $90 to $140 per hour for residential install work (the standard 2 to 2.5x markup over direct wage to cover overhead, insurance, vehicle, tools, and profit). BLS electricians wage data is the underlying source.
Trade two: licensed gas fitter or plumber. The gas line work (extending the existing service line, upsizing pipe diameter, installing the shutoff valve at the generator) requires a licensed gas fitter in most jurisdictions. Some areas allow a master plumber with gas certification; some require a dedicated gas contractor. Billable rates run $80 to $140 per hour. The work itself is usually 4 to 8 hours on a residential install (more if the run is long or the meter needs upsizing, less if the run is short).
Trade three: factory-authorized dealer technician. Generator manufacturers require their certified technicians to perform the final commissioning (first start, voltage and frequency calibration, controller programming, exercise cycle setup, warranty registration). This work is non-negotiable; without certified commissioning the warranty does not start. Commissioning runs 2 to 4 hours on a residential unit, billed at $150 to $300 per hour for the certified tech.
Trade four: concrete contractor (sometimes). A poured concrete pad is best laid by a concrete crew with proper formwork. Some generator installers bring this in house; many sub it out. Small jobs (one 36 by 36 inch pad) can be done in 2 hours by one person and cost $300 to $600 fully loaded. For composite pad installations no concrete contractor is needed, saving that line item.
Regional Labour Rate Differences
Labour rates vary materially across U.S. regions. The cost difference for an identical 22 kW install can be $2,000 to $3,500 between a low-cost rural market and a high-cost coastal metro. Major regional patterns based on BLS wage data plus union vs non-union market share:
| Region | Electrician $/hr Billed | Gas Fitter $/hr Billed | 22 kW Total Labour |
|---|---|---|---|
| NYC / NJ Metro | $140 - $180 | $140 - $180 | $7,000 - $9,500 |
| SF Bay / LA Metro | $140 - $190 | $130 - $170 | $7,500 - $10,000 |
| Boston / DC / Seattle | $120 - $160 | $110 - $150 | $6,000 - $8,500 |
| Chicago / Philly / Atlanta | $95 - $135 | $90 - $130 | $5,000 - $7,500 |
| Mid-South / Mountain West | $80 - $120 | $75 - $115 | $4,500 - $6,500 |
| Rural Midwest / Plains | $70 - $100 | $70 - $100 | $3,800 - $5,500 |
Billed rates derived from BLS electricians wage data with industry-standard 2x to 2.5x billable multiplier applied. Anchored to Angi aggregated cost report for cross-validation.
Hidden Labour Costs That Show Up Mid-Project
The headline labour numbers assume a clean install on a typical residential site. Several common situations push labour higher than the initial quote, and the responsible installer will flag these during the site survey rather than mid-install. Watch for these in your quote and ask explicitly if they apply.
Service panel upgrade. Homes with a 100 amp main panel often need an upgrade to 200 amp before the standby system can be connected. The upgrade itself costs $1,500 to $3,500 in labour and parts. The work involves a utility coordination appointment and a power outage of 2 to 4 hours during the swap. If the existing panel is in poor condition (rust, broken breakers, FPE or Zinsco brand) the upgrade is recommended regardless of generator install and the cost is justifiable as base electrical infrastructure work.
Long gas line run. The standard quote assumes a 25 to 40 foot gas line run from the existing meter to the generator location. If the meter is on the opposite side of the house, or if the generator must be placed far from the existing service line, the run can extend to 75 to 120 feet. Each additional 25 feet of one inch gas line costs $400 to $700 in pipe and labour. Trenching for a buried run adds $200 to $400 per 20 feet.
Meter upsizing. Most utilities will swap a residential meter at no charge but require an appointment that can take 2 to 8 weeks. If your project schedule cannot wait and the meter must be upsized to handle the generator's gas demand (typical above 22 kW), expedited meter swap can cost $400 to $1,500 in utility expediting fees.
HOA approval cost. Some HOAs require architectural review for visible generator equipment. The application fee runs $50 to $300, but the bigger cost is sometimes the required screening wall ($800 to $2,500) or landscape screening ($300 to $1,500) the HOA mandates. Check your CC and Rs before signing the install contract.
Coastal corrosion protection. For installs within 5 miles of saltwater, stainless hardware throughout the install adds $200 to $500. Coastal-grade conduit and weather sealing add another $150 to $400. These are not always quoted standard; ask.
FAQ
How much does it cost to install a whole house generator (labour only)?v
$2,500 to $8,500 in labour alone, depending on generator size. A 10-14 kW install costs $2,500 to $4,000 in labour. A 22 kW install costs $5,000 to $8,500. The unit price is separate; labour is 40 to 50 percent of total project cost on most residential installs.
Why does installation cost so much?v
Three reasons. First, the install requires four trades: a generator dealer or factory tech for unit commissioning, a licensed electrician for the transfer switch and panel work, a plumber or gas tech for gas line work, and sometimes a concrete contractor for the pad. Second, permits and inspections add real time. Third, the work happens largely outdoors with utility coordination, weather delays, and inspection scheduling.
Can I save money by doing parts myself?v
Modestly. Pouring the concrete pad yourself can save $300 to $600 if you have the skill. Excavating the trench for the gas line and electrical conduit can save another $200 to $400. The transfer switch, gas line connection, and electrical panel work must be done by licensed trades to maintain warranty and pass inspection. The realistic DIY savings cap at about $500 to $1,000 on a typical project.
What is included in installation labour?v
Site survey and quote, permit pulling, gas line install or extension, electrical panel work, transfer switch installation, conduit and wiring run from generator to ATS, concrete pad pour or composite pad placement, generator setting on pad, fuel connection, electrical termination, system commissioning, inspection coordination, and customer walkthrough. The full job runs 2 to 4 weeks from contract to operational generator.
Why do quotes vary so much between installers?v
Three main drivers: dealer overhead structure (national chains vs local outfits), labour rate (union vs non-union, geographic norms), and how the work is bundled. Some installers quote turnkey (everything in one number); others split out the unit, the ATS, the gas work, and the electrical separately. Get at least 3 quotes for any install over $8,000 and compare them line by line, not just on the bottom number.
Related
ATS cost detail
Switch hardware plus install labour broken out.
Concrete pad cost
Poured vs composite, drainage, setbacks.
Install guide hub
Step by step from permit to commissioning.
7 ways to save
Including DIY-ing the trench and the pad.
2026 benchmarks
Year-over-year labour rate inflation.
Financing options
HELOC, PACE, manufacturer financing.