EV Charging Cost Estimator in Montana

What Montana Residents Should Know

Home charging is where EV owners in Montana see the biggest savings. At the state average of $0.124 per kWh, a Level 2 home charger costs roughly $0.04 per mile. Compare that to $0.11 per mile for a 30-mpg gas car fueled at $3.20 per gallon, and you are looking at roughly $69 in monthly savings if you drive about 1,000 miles.

Even without time-of-use pricing, home charging in Montana remains significantly cheaper than gasoline. A full overnight charge on a Level 2 charger adds only $7–$9 to your electricity bill for 200–250 miles of range. Public DC fast charging is convenient on the road but typically costs 2–3 times more per kWh, so home charging should be your default whenever possible.

Montana households currently pay an average of $104 per month for electricity. Adding an EV to the household typically raises the bill by $37–$50 per month (for 1,000–1,300 miles of driving), which is still far less than the $106–$138 per month you would spend on gasoline for the same distance. Use the calculator above to enter your exact driving habits and see how much you could save.

Choosing a charging setup matters too. A standard 120-volt outlet (Level 1) adds only 3–5 miles of range per hour, which is fine for low-mileage drivers, while a 240-volt Level 2 charger refills most EVs overnight. A home Level 2 charger runs about $500–$1,200 installed and, at Montana's savings versus gasoline, usually pays for itself within a year or two of everyday driving.