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Electricity Rates in Idaho

Homes in Idaho paid an average of 13.73¢ per kWh in July 2026, 25% below the U.S. average (18.31¢). That's the 6th lowest rate of the 50 states and DC, and 14% higher than in August 2025.

Average rate
13.73¢
per kWh, July 2026
Rank
6th
lowest of 51
Average bill
$124.12
a month, 904 kWh

Data: EIA, July 2026. Average residential price and use.

Idaho rate over the last 12 months

11¢13¢15¢August 2025: 12.08¢ per kWhSeptember 2025: 12.50¢ per kWhOctober 2025: 12.46¢ per kWhNovember 2025: 12.25¢ per kWhDecember 2025: 11.87¢ per kWhJanuary 2026: 12.07¢ per kWhFebruary 2026: 12.63¢ per kWhMarch 2026: 13.01¢ per kWhApril 2026: 12.70¢ per kWhMay 2026: 12.35¢ per kWhJune 2026: 14.37¢ per kWhJuly 2026: 13.73¢ per kWhAug 2025Jul 202613.73¢
Show the monthly rates
Idaho average residential electricity rate, last 12 months
MonthCents per kWh
August 202512.08¢
September 202512.50¢
October 202512.46¢
November 202512.25¢
December 202511.87¢
January 202612.07¢
February 202612.63¢
March 202613.01¢
April 202612.70¢
May 202612.35¢
June 202614.37¢
July 202613.73¢

The rate went from 12.08¢ in August 2025 to 13.73¢ in July 2026. Rates often rise in summer, when demand peaks, so compare the same month year to year.

What appliances cost to run in Idaho

At 13.73¢ per kWh, with typical wattage and daily use, 30 days a month. Price any appliance in Idaho.

Monthly cost to run common appliances in Idaho
AppliancePer monthUse
Space heater$49.431,500 W, 8 h a day
Central air conditioner (3 ton)$115.333,500 W, 8 h a day
Window air conditioner$29.66900 W, 8 h a day
Refrigerator$4.94150 W, 8 h a day
Electric clothes dryer$9.273,000 W, 0.75 h a day
Electric water heater$55.614,500 W, 3 h a day
Dishwasher$3.711,200 W, 0.75 h a day
TV (55 inch LED)$2.06100 W, 5 h a day
Desktop computer$4.94150 W, 8 h a day
LED bulb (60 W equivalent)$0.199 W, 5 h a day

Idaho compared with nearby ranks

States with rates close to Idaho
RankStateRate
4thNorth Dakota13.41¢
5thTennessee13.71¢
6thIdaho13.73¢
7thNebraska13.78¢
8thKentucky13.81¢

See all 50 states and DC.

About these numbers

  • The rate is the EIA's average residential price for Idaho: all residential revenue divided by kWh sold. It includes delivery charges and fees spread over every kWh.
  • Your rate depends on your utility and plan. Divide your bill's total by the kWh used to find yours.
  • The average bill uses the average monthly use over the last 12 months at the latest rate. Bills are higher in the months you heat or cool with electricity.

Questions people ask

What is the average electricity rate in Idaho?

13.73¢ per kWh for homes in July 2026, according to the U.S. Energy Information Administration. That's 25% below the U.S. average of 18.31¢ and the 6th lowest of the 50 states and DC.

What is the average electric bill in Idaho?

About $124.12 a month: the average Idaho home uses 904 kWh a month (12-month average), at 13.73¢ per kWh. The U.S. average is about $159.30.

How much does it cost to run a space heater in Idaho?

A 1,500 W space heater costs about $0.21 an hour in Idaho, or $49.43 a month if it runs 8 hours a day.