Whole Home Generator Installation Cost in Idaho: 2026 Price Guide
By LumoWatt Editorial Team · Published 2026-09-15
Typical cost across Idaho
Whole-home standby generator installation across Idaho typically runs $6,700 to $15,200 all-in. This is a LumoWatt directory estimate compiled from installer- and city-reported pricing in our directory, not an independently published market study, actual quotes vary by home size, generator capacity, and site conditions.
Cost varies by metro:
| City | Typical range (LumoWatt estimate) |
|---|---|
| Boise, ID | $7,100 to $15,200 |
| Meridian, ID | $6,900 to $14,900 |
| Coeur d'Alene, ID | $6,700 to $14,400 |
Boise runs highest, reflecting the Treasure Valley's larger metro market; Coeur d'Alene runs toward the lower end. See our statewide Idaho installer directory for the full list of cities we cover.
What's driving the price
The ranges above combine three real cost components:
- Equipment: the generator unit itself, typically $2,000 to $8,000+ depending on brand and size. See our brand pages for manufacturer-specific pricing.
- Installation labor: typically $3,000 to $5,000, covering site prep, electrical work, gas-line connection, and the automatic transfer switch.
- Permits and inspection: varies by city and county, typically $50 to $500, see the permit section below for what's actually required where you live.
Permits in Idaho
A permanent standby generator installation in Idaho requires the installing business to hold an active Electrical Contractor License from the Idaho Division of Occupational and Professional Licenses (DOPL), plus a local electrical permit from the relevant city or county building department — for example Boise Planning and Development Services, Meridian Building Services, or Kootenai County Building and Planning for Coeur d'Alene. Always confirm the specific permit process with your city or county before installation.
Fuel choice: natural gas vs. propane
Most Idaho homeowners choose between natural gas and propane depending on what's already available at the property. Natural gas runs as long as utility service is up but isn't available everywhere, propane works anywhere but needs an on-site tank. See our natural gas vs. propane guide for the full tradeoff, including how fuel choice affects installation cost.
Outage risk shaping demand in Idaho
Idaho's outage risk in the Treasure Valley (Boise, Meridian) is driven by summer wildfire-related PSPS-style shutoffs, high-wind events, and winter ice storms. The Coeur d'Alene and North Idaho panhandle region faces a notably different climate profile, with heavier winter snow loads, ice storms off nearby lakes, and wind-driven timber falls onto power lines through dense forested terrain.
Get a real number for your home
These are directional, LumoWatt-estimated averages, not a quote. The only way to get an accurate number for your specific home is a load calculation and site visit from a license-checked local installer. Use the generator sizing calculator to get a starting estimate, then compare quotes from installers in Boise, Meridian, or Coeur d'Alene.
Frequently asked questions
- How much does a whole-home generator installation cost in Idaho?
- Statewide, LumoWatt's directory estimate runs $6,700-$15,200 all-in, covering the unit, installation labor, transfer switch, and typical permit fees. This is an estimate compiled from installer- and city-reported pricing, not an independent market study, get quotes from 2-3 license-checked local installers for a number specific to your home.
- Do I need a state license to install a generator in Idaho?
- The installing business needs an active Electrical Contractor License from the Idaho Division of Occupational and Professional Licenses (DOPL). You also need a local electrical permit from your city or county building department.
- Why does Coeur d'Alene face different outage risks than Boise?
- Coeur d'Alene and North Idaho's panhandle region face heavier winter snow loads, lake-effect ice storms, and wind-driven timber falls in dense forested terrain. Boise and Meridian, in the Treasure Valley, mainly see summer wildfire-related PSPS-style shutoffs and high-wind events instead.