Electricity rates in Idaho

Average residential price, typical bill and appliance running costs in Idaho, from official U.S. Energy Information Administration data.

Official EIA data · August 2026

Average rate, August 2026

13.37¢

per kWh

vs U.S. average

−26.4%

U.S.: 18.16¢

vs a year ago

+10.7%

was 12.08¢

Rank (1 = priciest)

#47 of 51

50 states + DC

What your kWh cost in Idaho

Electricity used

kWh

Monthly kWh from your bill. 863 kWh is the 2024 U.S. household average.

Electricity rate

EIA average residential price, August 2026. Your bill shows your exact rate.

Energy cost

$126.21

944 kWh × 13.37¢ (Idaho average)

Per kWh: $0.1337
Per 100 kWh: $13.37
Per 1,000 kWh: $133.70

Average electric bill in Idaho

2024 (EIA)	Idaho	U.S.
Monthly use	944 kWh	863 kWh
Average price	11.52¢	16.48¢
Monthly bill	$108.73	$142.26
Residential customers	868,141	143,144,185

At the August 2026 rate, the average Idaho household's 944 kWh would cost about $126.21 a month.

What appliances cost to run in Idaho

Yearly cost at 13.37¢/kWh. Where marked, the kWh are the average for homes with that appliance in the Mountain North region (EIA RECS 2020); the rest use the example settings on each appliance's page.

Appliance	kWh per year	Cost per year
Space heater	4,320	$577.58
Electric car *	3,588	$479.72
Electric water heater *	2,881	$385.19
Pool pump *	2,667	$356.58
Hot tub *	2,161	$288.93
Window air conditioner	2,095	$280.04
Central air conditioner *	1,396	$186.65
Dehumidifier *	999	$133.57
Electric clothes dryer *	710	$94.93
Light bulbs *	681	$91.05
Refrigerator *	626	$83.70
Chest or upright freezer *	557	$74.47
Electric oven *	298	$39.84
TV *	186	$24.87
Ceiling fan *	151	$20.19
Microwave *	113	$15.11

* Regional average from the EIA Residential Energy Consumption Survey.

Where Idaho ranks

Idaho is #47 of 51 by average residential rate in August 2026 (1 = most expensive). It is highlighted on the map.

¢ per kWh 12.7–14.4 14.4–15.9 15.9–17.2 17.2–24.5 24.5–47.2

Rate history

Period	Idaho	U.S.
August 2026	13.37¢	18.16¢
August 2025	12.08¢	17.57¢
Year to date through August 2026	13.02¢	18.19¢
Same period a year earlier	11.65¢	17.03¢
2024 annual average	11.52¢	16.48¢

Nearby states (Mountain North)

State	Rate (August 2026)	Avg. bill (2024)
Colorado	17.17¢	$100.57
Montana	15.57¢	$107.91
Utah	13.31¢	$94.57
Wyoming	14.43¢	$107.65

See electricity rates in all 50 states.

Quick answers

What is the average electricity rate in Idaho?

The average residential price in Idaho was 13.37¢ per kWh in August 2026, according to the U.S. Energy Information Administration. That is −26.4% versus the U.S. average of 18.16¢ and ranks #47 of 51 (1 = most expensive).

What is the average electric bill in Idaho?

In 2024, the average Idaho household used 944 kWh a month and paid $108.73 a month (EIA). At the August 2026 rate, the same usage would cost about $126.21.

Are electricity prices going up in Idaho?

The August 2026 average of 13.37¢/kWh compares with 12.08¢ a year earlier (+10.7%). For the year to date through August 2026, the average was 13.02¢, +11.8% versus the same period last year. Prices also change with the season, so compare the same month year over year.

Why is my rate different from the Idaho average?

The EIA average is total residential revenue divided by kWh sold in the state. Your rate depends on your utility, your plan (fixed, variable or time-of-use) and fixed monthly charges, which weigh more per kWh in low-usage months.

Sources

Last reviewed November 2, 2026. Rates refreshed automatically when EIA publishes a new month.

More calculators

Electricity Rates by State

Average residential price per kWh in every state, updated monthly from the EIA.

Electricity Cost Calculator

What any device costs per hour, day, month and year from its wattage.

kWh to Dollars Calculator

Turn the kWh on your bill into dollars at your state's rate.

See everything

These are estimates. State rates are EIA averages (total residential revenue ÷ kWh sold), so they include fixed monthly charges spread across usage; your own price per kWh, time-of-use rates and taxes can differ. Real appliance use depends on the model, settings, climate and habits.