Montana EV charging vs. gas costs
Montana's average residential electricity rate is 13.9¢/kWh,below the national average by 26%. Gasoline averages $3.9/gallon, above the national average by 3%. That ranks Montana #7 of 51 for cheapest electricity and #37 for cheapest gas.
Cost per mile in Montana
Charging an EV at 3.5 mi/kWh on Montana's 13.9¢/kWh residential rate works out to about 4.0¢ per mile. A gas car at 28 MPG paying $3.9/gallon pays about 13.9¢ per mile — roughly 3.5× as much per mile driven.
Example: 12,000 miles a year in Montana
A gas car at 28 MPG driving 12,000 miles a year in Montana spends about $1,671 on gasoline. An EV at 3.5 mi/kWh charging at home over the same distance spends about $477 on electricity — a difference of $1,195 a year, or about $5,974 over five years.
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Frequently asked questions
Is it cheaper to drive an EV or a gas car in Montana?
In Montana, an EV charging at home costs about 4.0¢ per mile, versus about 13.9¢ per mile for a 28 MPG gas car at the state's $3.9/gallon average. The EV is cheaper to fuel per mile.
How much can an EV save per year in Montana?
Driving 12,000 miles a year, an EV owner in Montana spends about $477 on home charging versus $1,671 on gasoline — a saving of roughly $1,195 per year, or $5,974 over five years.