Idaho electricity rates (August 2026)

Average residential and commercial electricity prices in Idaho from EIA's monthly utility survey, with the trend, the largest utilities and what power costs a typical homeowner.

Residential rate

13.37¢

▲ 10.7% vs a year agoper kWh, August 2026; ranks 47 of 51 (1 = highest)

Commercial rate

10.21¢

per kWh, August 2026

Average home bill

$116

per month over the last 12 months, about 906 kWh

U.S. residential average

18.16¢

Idaho is 26% below the U.S. average.

Find your utility's rate by ZIP

Idaho vs U.S. residential rate

Cents per kWh by month, last 36 months.

Last 12 months in Idaho

Month	Residential	Commercial	U.S. residential	Avg kWh	Avg bill
August 2026	13.37¢	10.21¢	18.16¢	1,026	$137
July 2026	13.73¢	10.16¢	18.31¢	1,112	$153
June 2026	14.37¢	9.92¢	18.34¢	794	$114
May 2026	12.35¢	9.34¢	18.44¢	746	$92
April 2026	12.70¢	9.87¢	18.86¢	763	$97
March 2026	13.00¢	9.88¢	18.60¢	866	$113
February 2026	12.63¢	9.38¢	17.65¢	944	$119
January 2026	12.06¢	9.06¢	17.45¢	1,183	$143
December 2025	11.88¢	8.91¢	17.11¢	1,060	$126
November 2025	12.25¢	9.42¢	17.77¢	860	$105
October 2025	12.46¢	9.10¢	17.95¢	737	$92
September 2025	12.50¢	10.03¢	18.05¢	787	$98

Largest utilities in Idaho

Residential rates for the biggest utilities in Idaho that report monthly to EIA, ordered by number of homes served, for August 2026.

Utility	Type	Rate	Avg kWh	Avg bill	Homes
Idaho Power Co	Investor Owned	13.57¢	1,078	$146	555,075
Avista Corp	Investor Owned	13.19¢	862	$114	131,568
PacifiCorp	Investor Owned	14.87¢	852	$127	77,382
Kootenai Electric Cooperative	Cooperative	14.36¢	1,058	$152	32,029
City of Idaho Falls - (ID)	Municipal	9.64¢	942	$91	30,190
Salmon River Electric Coop Inc	Cooperative	12.32¢	836	$103	2,485
Lower Valley Energy Inc	Cooperative	9.37¢	790	$74	1,636
Raft Rural Elec Coop Inc	Cooperative	11.02¢	1,047	$115	1,399
Missoula Electric Coop, Inc	Cooperative	13.39¢	675	$90	49

What electricity adds to owning a home in Idaho

A typical Idaho home is valued at $476,754 (Zillow). With 10% down at this week's 7.24% 30-year rate, principal and interest come to about $2,924 a month. The average electric bill of $116 adds about 4% on top of that, or $1,389 a year. See Idaho property tax and closing costs or run the monthly payment.

Bills follow the seasons: in Idaho the highest-use month of the last year averaged 1,183 kWh per home and the lowest 737 kWh. Budget for the expensive months, not the average.

Common questions

What is the average electricity rate in Idaho?

Homes in Idaho paid an average of 13.37 cents per kWh in August 2026, 26% below the U.S. average of 18.16 cents (EIA Form 861M).

How much is the average electric bill in Idaho?

Over the last 12 months the average Idaho home used about 906 kWh a month and paid about $116 a month.

Have Idaho electricity rates gone up?

The residential rate is 10.7% higher than in August 2025, when it was 12.08 cents per kWh.

What do businesses pay for electricity in Idaho?

Commercial customers in Idaho paid 10.21 cents per kWh in August 2026.

Electricity rates in all statesRanked table and ZIP lookup Idaho buying costsProperty tax, transfer tax and closing costs Idaho buyer programsDown payment help where you live

Sources: U.S. Energy Information Administration (EIA), Form EIA-861M monthly sales and revenue (state and utility data, latest month August 2026; EIA marks recent months preliminary and may revise them); ZIP-to-utility map: OpenEI, U.S. Electric Utility Companies and Rates: Look-up by Zip Code (2024), CC BY 4.0. Rates are average revenue per kWh (total bill divided by kWh sold), so they include fixed and delivery charges. EIA posts each month about eight weeks after it ends; this page checks for new data every morning.