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Generator Installation in Denver, CO

Compare 3 local generator installation pros. Typical service: $9990–$15984.

Top Generator Installation Companies in Denver

  1. 1.Absolute Plumbing, Electrical, Heating & Air

    4.8★ (3,977 reviews)

    4.8★ from 3977 reviews

    +17209542939Website

  2. 2.Colorado Outdoor Power Equipment Inc

    4.4★ (162 reviews)

    4.4★ from 162 reviews

    +13037334651Website

  3. 3.Rocky Mountain Generator Supply Co

    4.8★ (45 reviews)

    4.8★ from 45 reviews

    +13037776778Website

Generator Installation Cost in Denver

Local ranges, adjusted for area wage and cost-of-living data.

ServiceTypical range in Denver
Whole-house standby generator, installed$9,990–$15,984/job
Small standby generator (10-14 kW)$6,993–$9,990/job
Large standby generator (26 kW+)$14,985–$19,980/job

Generator Installation prices in Denver run about 0% below the national average, based on what this trade earns in the metro area — so neighbouring cities in the same metro see similar rates.

Quotes on this page come from 3 companies serving Denver, rated 4.7★ on average across 4,184 customer reviews.

Denver Climate & Seasonal Timing

What Denver's weather means for scheduling generator installation.

Last spring frost
May 2
First fall frost
October 5
Annual precipitation
15.58"
Heating degree days
6,068
Cooling degree days
687
MonthLowHighPrecip
Jan17.4°44.5°0.47"
Feb19.6°46.1°0.47"
Mar26.4°53.6°1.25"
Apr34.1°60.9°1.74"
May43.8°70.5°2.3"
Jun52.8°81.2°1.69"
Jul59°88.2°2.05"
Aug57.4°85.7°2.06"
Sep47.5°77.2°1.06"
Oct35.7°64.9°1.08"
Nov24.9°52.3°0.82"
Dec16.7°43.3°0.59"

NOAA station data 0.73 miles from Denver.

Permits & Regulations in CO

Permit typically required

  • Electrical contractors must register with the Colorado State Electrical Board and employ a licensed master electrician
  • The board licenses master, journeyman and residential wiremen statewide
  • Electrical permits come from the state or from local jurisdictions that run their own inspection programs

License required: Colorado State Electrical Board contractor registration and master license

Sources: dpo.colorado.gov

Generator Installation FAQs for Denver

How much does a whole-house generator cost in Denver?

A whole-house standby generator in Denver typically runs $9990-$15984 installed, including the transfer switch, pad and gas hookup.

How many generator installers serve Denver?

We track 3 generator installation companies serving Denver.

Is generator installation in Denver more expensive than average?

Electrician labor in Denver runs about -0.1% versus the national average.

Do I need a permit for a generator in Denver, CO?

In CO, Electrical contractors must register with the Colorado State Electrical Board and employ a licensed master electrician. Standby generators in Denver need an electrical permit and, for gas units, a gas permit.

What size generator does a Denver home need?

It depends on what must run in an outage; with summer highs near 88F, keeping central air on in Denver pushes most homes toward 18-24 kW.

Do generators work in Denver winters?

Standby units are built for it; with winter lows around 17F in Denver, ask about a cold-weather kit for the battery and oil.

How many quotes should I get for a generator in Denver?

Three; with 3 installers serving Denver, compare the kW size, transfer switch type and maintenance plan.

How long does generator installation take in Denver?

Installation is usually one or two days, but permits and equipment lead times in Denver can stretch the whole project to several weeks.