How much does an electric car cost per month in Idaho?

About $43.48 a month, assuming 3,800 kWh a year at 13.73¢/kWh.

How many kilowatt-hours does an electric car use?

Roughly 3,800 kWh a year under these assumptions.

Is that expensive compared with other states?

Idaho has the 6th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $696 a year.

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Cost to run an electric car in Idaho (July 2026 rates)

At 13.73¢ per kilowatt-hour — Idaho's average residential price in July 2026 — running an electric car costs $522 a year. That is 25% less than the national average of $696. Idaho's residential rate is up 11.8% from July 2025, which moves this appliance from $467 to $522 a year.

Per day: $1.43
Per month: $43.48
Per year: $522

Assumption: 3,800 kWh a year. 12,000 miles a year at roughly 3.5 miles per kWh, plus about 10% charging losses, on home Level 2 charging. Use the calculator to swap in the numbers from your own model.

How Idaho compares

Idaho pays 13.73¢/kWh, the 6th cheapest residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $174 less a year than the typical U.S. household pays for the same use. Running the same electric car costs $483 a year in Louisiana and $1,824 in Hawaii, so where you live changes this bill by $1,341 a year.

State	Rate	Per month	Per year
North Dakota	13.41¢	$42.46	$510
Tennessee	13.71¢	$43.41	$521
Idaho	13.73¢	$43.48	$522
Nebraska	13.78¢	$43.64	$524
Kentucky	13.81¢	$43.73	$525

States ranked by average residential price, cheapest first. See all 51 states for an electric car.

What else costs about the same in Idaho

Electric water heater$481 a year in ID Hot tub$343 a year in ID Central air conditioner$323 a year in ID

Cutting the number down

Charging on an off-peak or EV rate plan is usually the single largest lever, and it costs nothing but a schedule setting.
Charging losses are real: the meter sees noticeably more than the battery receives, especially in cold weather.
Cost per mile, not cost per charge, is the number that compares cleanly against a tank of gasoline.

Questions

How much does an electric car cost per month in Idaho?: About $43.48 a month, assuming 3,800 kWh a year at 13.73¢/kWh.
How many kilowatt-hours does an electric car use?: Roughly 3,800 kWh a year under these assumptions.
Is that expensive compared with other states?: Idaho has the 6th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $696 a year.