Idaho EV charging vs. gas costs
Idaho's average residential electricity rate is 12.7¢/kWh,below the national average by 33%. Gasoline averages $4.01/gallon, above the national average by 6%. That ranks Idaho #2 of 51 for cheapest electricity and #43 for cheapest gas.
Cost per mile in Idaho
Charging an EV at 3.5 mi/kWh on Idaho's 12.7¢/kWh residential rate works out to about 3.6¢ per mile. A gas car at 28 MPG paying $4.01/gallon pays about 14.3¢ per mile — roughly 3.9× as much per mile driven.
Example: 12,000 miles a year in Idaho
A gas car at 28 MPG driving 12,000 miles a year in Idaho spends about $1,719 on gasoline. An EV at 3.5 mi/kWh charging at home over the same distance spends about $435 on electricity — a difference of $1,283 a year, or about $6,416 over five years.
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Frequently asked questions
Is it cheaper to drive an EV or a gas car in Idaho?
In Idaho, an EV charging at home costs about 3.6¢ per mile, versus about 14.3¢ per mile for a 28 MPG gas car at the state's $4.01/gallon average. The EV is cheaper to fuel per mile.
How much can an EV save per year in Idaho?
Driving 12,000 miles a year, an EV owner in Idaho spends about $435 on home charging versus $1,719 on gasoline — a saving of roughly $1,283 per year, or $6,416 over five years.