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Idaho electricity rates and average bill

Idaho households paid an average of 13.73¢ per kWh in July 2026, 25% below the US average and +11.8% on a year earlier. That ranks #46 of 51, most expensive first.

Source EIA, residential retail priceLatest month July 2026

Average residential priceID

13.73 ¢/kWh
Typical bill
$114/mo
Average use
904kWh
EV, 1,000 mi
$35/mo

Thirteen months of prices

Average residential price by month, ¢/kWh (EIA). Highest 14.37¢ in June 2026, lowest 11.87¢ in December 2025. Download the data (CSV)

11.7¢12.4¢13.1¢13.8¢14.6¢Jul 2025Sep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026

Utilities and rate plans

Each utility’s current residential tariffs, transcribed from its tariff sheets, with periods, tiers, fixed charge and a typical bill. Customer counts from EIA-861 (2024).

Compare rate plans in Idaho

Rates by city

Cities of 100,000 or more whose utility is modeled here.

Also: Meridian (Idaho Power), Nampa (Idaho Power).

Against the national average and states with similar prices

Average residential ¢/kWh, July 2026 (EIA).

Idaho13.73¢
United States18.31¢
Tennessee13.71¢
Nebraska13.78¢
Kentucky13.81¢
North Dakota13.41¢

Average electric bill in Idaho

Over the last 12 months the average price was 12.65¢ per kWh and the average home used 904 kWh a month, so a typical Idaho household spent about $114 a month on electricity, or $1,372 a year. Use is close to the US average of 870 kWh a month, peaking in January at 1,183 kWh.

Driving a Tesla Model Y Long Range AWD 1,000 miles a month takes 275 kWh from the wall (EPA 27.5 kWh/100 mi), about $35 at the state average. A 25.5 mpg gasoline car covering the same distance at $4.23 a gallon (Rocky Mountain (PADD 4) average, August 2026) costs about $166.

The state average hides the real spread. Utilities in the same state charge different prices, and on a time-of-use plan the same kWh costs more in the peak hours than off-peak; each utility page shows by how much. Open Idaho Power’s page to see its plans, prices by hour and fixed charge, or run the calculators below with Idaho preloaded.

Natural gas for homes averaged $0.77 per therm over the 12 months to June 2026 (EIA, all charges included), and a typical gas-heated home uses about 595 therms a year for heating. The heat pump calculator compares that with electric heating on your plan.

A south-facing, 20° rooftop array in Idaho produces about 1,362 kWh per installed kW a year (NREL PVWatts at the state’s population center). What that is worth depends on your utility’s export rule, shown on each utility’s page.

Idaho electricity: common questions

How much does electricity cost in Idaho?

Homes in Idaho paid an average of 13.73¢ per kWh in July 2026, against 18.31¢ for the US, which ranks the state #46 of 51 from most expensive. Over the last 12 months the average was 12.65¢. These are EIA averages of what households actually paid, fixed charges included; your utility and plan set your own price.

What is the average electric bill in Idaho?

About $114 a month ($1,372 a year): the average Idaho home used 904 kWh a month over the last 12 months at an average 12.65¢/kWh. Use peaks in January, at 1,183 kWh.

Are electricity prices going up in Idaho?

Idaho's average residential price was 13.73¢/kWh in July 2026, 11.8% higher than a year earlier. Over the last ten years the 12-month average has changed by +2.5% a year, against +3.6% a year for the US.

How much does it cost to charge an electric car in Idaho?

Driving 1,000 miles a month in a Tesla Model Y Long Range AWD takes 275 kWh from the wall, about $35 at the state's average home price, against about $166 of gasoline for a 25.5 mpg car. On a time-of-use plan, charging overnight can cost less than that.

Do Idaho utilities offer time-of-use plans?

Yes. Idaho Power offers Schedule 5 (peak 7 pm–11 pm on summer weekdays). Each utility's page shows every period and price.

Calculators with Idaho preloaded

EV charging cost Appliance cost Compare plans Solar payback Heat pump vs gas EV cost in ID