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Idaho Electricity Prices

Average retail price by sector.

Residential

13.37¢ /kWh

▲ 10.7%vs. last year

Commercial

10.21¢ /kWh

▲ 14.7%vs. last year

Industrial

9.71¢ /kWh

▲ 11.9%vs. last year

Data current through August 2026 — the latest available from the U.S. EIA, which publishes monthly figures on a roughly two-month delay.

Average monthly bill

Full bill breakdown →

$116per month▲ 5.2% vs. the year before

12.77¢/kWh × 907 kWh a month. Residential revenue divided by residential customers, averaged over the 12 months to August 2026 — the 46th highest among the 50 states and DC.

Compared with the U.S. and neighboring states

Average monthly residential electricity bill, in US dollars
Idaho		$116
U.S. average		$158
Washington		$132
Oregon		$131
Nevada		$122
Wyoming		$115
Montana		$115
Utah		$105

Idaho is $43 a month below (-26.9%) the U.S. average of $158. Average monthly bill, September 2025 – August 2026.

How Idaho makes its electricity

Fuel mix & trend since 2001 →Power plants →

Renewable

73.4%

Carbon-free

73.4%

Largest source

Hydro 48%

26%

14%

48%

Idaho electricity generation by source, September 2025 – August 2026
Source	Share	Generation
Natural gas	26.4%	5,768 GWh
Coal	0.0%	0 GWh
Nuclear	0.0%	0 GWh
Wind	14.0%	3,050 GWh
Solar	8.4%	1,837 GWh
Hydro	48.4%	10,567 GWh
Other	2.8%	619 GWh

21.8 TWh of net generation over the 12 months to August 2026. Generation, not consumption — power crosses state lines.

Idaho electricity prices in context

Idaho's residential electricity rate stood at 13.37¢/kWh in August 2026, the 47th most expensive among the 50 states and DC. This was 4.79¢/kWh below the national average of 18.16¢/kWh, a difference of 26.4%. Of Idaho's six bordering states, only Nevada at 12.72¢/kWh and Utah at 13.31¢/kWh undercut Idaho's rate; the others ranged from Washington at 14.63¢/kWh to Oregon at 15.92¢/kWh. Commercial and industrial rates were 10.21¢/kWh and 9.71¢/kWh respectively.

The rate has risen substantially over longer periods. From August 2021 it climbed 24.8% to reach its current level. Over twenty years since August 2006 it has more than doubled, up 110.9% from 6.34¢/kWh. The full span since records began in January 2001 shows an increase of 156.6% from 5.21¢/kWh. The record high arrived just two months before this snapshot, at 14.37¢/kWh in June 2026, while the lowest rate on record was that January 2001 figure of 5.21¢/kWh.

The monthly residential bill averaged $116 for 907 kWh in August 2026. The national average bill was $158 for 876 kWh per month. Idaho households used more electricity than the national average but paid significantly less, a gap widened by the state's lower rate per kilowatt-hour.

Written from the EIA figures on this page, covering data through August 2026.

12-month trend

ResidentialCommercialIndustrial

Price history since 2001

ResidentialCommercialIndustrial

Average retail price in all three sectors, every month since January 2001.

Residential

Jan '01: 5.21¢
Now: 13.37¢
Change: ▲ 156.6%
Range: 5.21–14.37¢

Recent months

Month	Residential	Commercial	Industrial
August 2026	13.37	10.21	9.71
July 2026	13.73	10.16	9.02
June 2026	14.37	9.92	10.23
May 2026	12.35	9.34	7.21
April 2026	12.70	9.87	7.27
March 2026	13.01	9.84	7.16
February 2026	12.63	9.40	7.17
January 2026	12.07	9.05	6.81
December 2025	11.87	8.90	6.78
November 2025	12.25	9.41	7.61
October 2025	12.46	9.08	6.46
September 2025	12.50	10.02	8.72

Prices in ¢/kWh.

Frequently asked questions

›How much does electricity cost in Idaho?

Residential electricity in Idaho costs 13.37¢ per kilowatt-hour as of August 2026, the 47th highest rate among the 50 states and DC. Commercial customers pay 10.21¢ and industrial customers 9.71¢ per kilowatt-hour.

›Why is electricity relatively cheap in Idaho?

Idaho's residential rate of 13.37¢/kWh is -26.0% versus the U.S. average of 18.07¢/kWh. What a household actually pays also depends on how much it uses: the typical Idaho home consumes 907 kWh a month against a national average of 876 kWh, which is why its average bill comes to $116.

›Have electricity prices in Idaho gone up?

Residential electricity in Idaho has risen 156.6% since 2001, reaching 13.37¢/kWh in August 2026. Over the last year alone the change was +10.7%.

›Is electricity cheaper in states neighboring Idaho?

Of the states bordering Idaho, Utah has the lowest average monthly bill at $105 and Washington the highest at $132. Idaho averages $116 a month, against a U.S. average of $158.