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

About $47.94 a month, assuming 3,800 kWh a year at 15.14¢/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?

Montana has the 16th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $697 a year.

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Cost to run an electric car in Montana (June 2026 rates)

At 15.14¢ per kilowatt-hour — Montana's average residential price in June 2026 — running an electric car costs $575 a year. That is 17% less than the national average of $697. Montana's residential rate is up 2.2% from June 2025, which moves this appliance from $563 to $575 a year.

Per day: $1.58
Per month: $47.94
Per year: $575

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 Montana compares

Montana pays 15.14¢/kWh, the 16th cheapest residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $122 less a year than the typical U.S. household pays for the same use. Running the same electric car costs $498 a year in Nevada and $2,003 in Hawaii, so where you live changes this bill by $1,505 a year.

State	Rate	Per month	Per year
New Mexico	15.06¢	$47.69	$572
Florida	15.10¢	$47.82	$574
Montana	15.14¢	$47.94	$575
Arizona	15.18¢	$48.07	$577
Wyoming	15.24¢	$48.26	$579

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

What else costs about the same in Montana

Electric water heater$530 a year in MT Hot tub$378 a year in MT Central air conditioner$356 a year in MT

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 Montana?: About $47.94 a month, assuming 3,800 kWh a year at 15.14¢/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?: Montana has the 16th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $697 a year.