Residential rates by utility (EIA-861, average all-in ¢/kWh)
| Utility | 2023 ¢/kWh | 2024 ¢/kWh | Customers (2024) | Ownership | vs state avg, $/yr |
|---|---|---|---|---|---|
| United Electric Co-op, Inc | 7.34 | 7.89 | 5,100 | Co-op | -$400 |
| City of Idaho Falls | 8.76 | 9.25 | 28,142 | Municipal | -$254 |
| Fall River Rural Elec Coop Inc | 9.86 | 11.11 | 15,433 | Co-op | -$53 |
| Northern Lights, Inc | 11.44 | 11.49 | 18,511 | Co-op | -$12 |
| Avista Corp | 10.18 | 11.62 | 128,226 | Investor-owned | +$2 |
| Idaho Power Co | 11.65 | 11.76 | 525,751 | Investor-owned | +$17 |
| PacifiCorp | 11.02 | 12.11 | 74,170 | Investor-owned | +$55 |
| Kootenai Electric Cooperative | 11.44 | 12.21 | 30,378 | Co-op | +$65 |
Average price = residential revenue ÷ residential sales from each utility's federal EIA-861 filing (bundled service — supply + delivery + riders, not a quoted tariff rate). State average = 11.60¢/kWh, volume-weighted across these utilities (2024). Your distribution utility is fixed by address; these gaps measure what households in different territories actually paid. A further 1 competitive suppliers / solar lessors report energy-only or behind-the-meter sales in Idaho; their prices cover only part of the bill and are not comparable to the all-in figures above.
Can you choose your electric company in Idaho?
Electric supply choice: no · Gas supply choice: no
Fully regulated.
Official rate information: puc.idaho.gov.
Heating: which fuel is cheapest per million BTU in Idaho?
| Fuel | Native price | As of | $ per MMBTU |
|---|---|---|---|
| Utility natural gas | $0.692 /therm | Feb 2026 | 6.92 |
| Propane | $2.397 /gal | Mar 30, 2026 | 26.21 |
| Electricity (resistance) | 12.63 ¢/kWh | Feb 2026 | 37.02 |
Utility natural gas is the cheapest residential energy per BTU in Idaho at $6.92/MMBTU. Conversions: 1 kWh = 3,412 BTU; 1 therm = 100,000 BTU; heating oil 138,500 BTU/gal; propane 91,452 BTU/gal. Site-energy prices — appliance efficiency changes delivered-heat cost: a 95% AFUE gas furnace delivers heat near the gas figure, while a heat pump at seasonal COP 2.5–3 cuts the effective electric figure by 60–70%. (No EIA weekly heating-oil survey price for Idaho.)
Electricity price trend, last 12 months
Idaho's average residential price went from 10.95¢/kWh in Feb '25 to 12.63¢/kWh in Feb '26 — up 15% year-over-year. The 12-month peak was 12.63¢ in Feb '26.
| Month | Feb '25 | Mar '25 | Apr '25 | May '25 | Jun '25 | Jul '25 | Aug '25 | Sep '25 | Oct '25 | Nov '25 | Dec '25 | Jan '26 | Feb '26 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ¢/kWh | 10.95 | 11.57 | 11.89 | 11.88 | 12.07 | 12.28 | 12.08 | 12.50 | 12.46 | 12.25 | 11.87 | 12.07 | 12.63 |
Head-to-head utility comparisons in Idaho
- Idaho Power Co vs Avista Corp — who's cheaper?
- Idaho Power Co vs PacifiCorp — who's cheaper?
Questions people ask
- Who has the cheapest electricity in Idaho?
- Avista Corp, at an average 11.6 cents per kWh for 2024 among Idaho utilities with at least 50,000 customers (EIA-861). The most expensive, PacifiCorp, averaged 12.1 cents — a difference of about $52 per year at 10,800 kWh.
- Can I choose my electric company in Idaho?
- No. Idaho is a regulated retail market: your utility is set by address and there is no residential supplier shopping. Rates are set in state utility-commission proceedings (puc.idaho.gov).
- Is gas or electric heat cheaper in Idaho?
- Per million BTU of site energy, utility natural gas was $6.92 (Feb 2026) versus $37.02 for electric resistance heat. A heat pump delivering 2.5-3 units of heat per unit of electricity brings electric heating to roughly $12-15 per MMBTU.
- What is the average electric bill in Idaho?
- At Idaho's February 2026 average price of 12.63 cents/kWh and typical usage of 900 kWh per month, a household pays about $114 per month ($1364 per year) for electricity. Actual bills vary with usage, utility territory, and tariff.