Home Cost Pulse

Idaho electricity rates and average bill

Residential price, August 2026

Homes in Idaho paid an average of 13.37¢ per kWh in August 2026, 26% below the U.S. average of 18.16¢. That is the 5th lowest among the 50 states and D.C. The price is up 10.7% vs August 2025.

The average Idaho home12 months to August 2026
Electricity used per month
906 kWh
U.S. average home
875 kWh
Average monthly bill
$115.73

Same usage at the Aug 2026 price$121.18

Bills are revenue divided by customers, so they include the fixed charges and fees utilities collect.

Price over the last 36 months

9.7¢14.8¢19.8¢Sep 2023Mar 2025Aug 202613.37¢
IdahoU.S. average
Show the monthly numbers
MonthPrice
August 202613.37¢
July 202613.73¢
June 202614.37¢
May 202612.35¢
April 202612.70¢
March 202613.00¢
February 202612.63¢
January 202612.06¢
December 202511.88¢
November 202512.25¢
October 202512.46¢
September 202512.50¢
August 202512.08¢
July 202512.28¢
June 202512.12¢
May 202511.89¢
April 202511.90¢
March 202511.58¢
February 202510.96¢
January 202510.83¢
December 202410.95¢
November 202411.28¢
October 202412.20¢
September 202412.36¢

What everyday things cost in Idaho

At 13.37¢ per kWh, before any fixed monthly charge:

ItemEnergyCost
1,000 kWh
a round reference amount		1,000 kWh$133.70
Central air conditioner
3.5 kW running 8 hours a day for 30 days		840 kWh$112.31
Space heater
1.5 kW running 8 hours a day for 30 days		360 kWh$48.13
Electric car, 1,000 miles
3.5 miles per kWh with 10% charging losses		317 kWh$42.44
Electric clothes dryer
3 kW, twelve one-hour loads		36 kWh$4.81
LED TV
100 W for 5 hours a day for 30 days		15 kWh$2.01

Thermostat-controlled appliances cycle on and off, so real use is often lower. Price your own appliance.

Rooftop solar in Idaho

A 1 kW rooftop system near Boise produces about 1,456 kWh a year, according to the NLR PVWatts model. At Idaho's average price that output is worth about $195 a year per kW. A typical 7 kW system would make about 10,193 kWh, worth about $1,363 a year.

The 30% federal tax credit for solar you buy (Section 25D) ended on December 31, 2025. Work out payback with your own quote.

Estimate your Idaho bill

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Idaho compared with the West

StatePriceAverage bill
Nevada12.72¢$122
Utah13.31¢$104
Idaho13.37¢$116
Wyoming14.43¢$115
Washington14.63¢$132
Arizona15.05¢$162
Montana15.57¢$115
Oregon15.92¢$131
New Mexico16.51¢$98
Colorado17.17¢$113
Alaska29.41¢$158
California29.75¢$164
Hawaii47.18¢$228

Source: U.S. Energy Information Administration (EIA), residential retail sales, latest month August 2026. Average bill and usage: 12 months to August 2026, computed from EIA revenue, sales and customer counts.

Solar: PVWatts v8 by the National Laboratory of the Rockies, 1 kW fixed roof system, 20° tilt, facing south, 14% losses.

How we calculate. Page updated 2026-11-15.