Hawaii EV charging vs. gas costs
Hawaii's average residential electricity rate is 46.62¢/kWh,above the national average by 148%. Gasoline averages $5.46/gallon, above the national average by 44%. That ranks Hawaii #51 of 51 for cheapest electricity and #51 for cheapest gas.
Cost per mile in Hawaii
Charging an EV at 3.5 mi/kWh on Hawaii's 46.62¢/kWh residential rate works out to about 13.3¢ per mile. A gas car at 28 MPG paying $5.46/gallon pays about 19.5¢ per mile — roughly 1.5× as much per mile driven.
Example: 12,000 miles a year in Hawaii
A gas car at 28 MPG driving 12,000 miles a year in Hawaii spends about $2,340 on gasoline. An EV at 3.5 mi/kWh charging at home over the same distance spends about $1,598 on electricity — a difference of $742 a year, or about $3,708 over five years.
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Frequently asked questions
Is it cheaper to drive an EV or a gas car in Hawaii?
In Hawaii, an EV charging at home costs about 13.3¢ per mile, versus about 19.5¢ per mile for a 28 MPG gas car at the state's $5.46/gallon average. The EV is cheaper to fuel per mile.
How much can an EV save per year in Hawaii?
Driving 12,000 miles a year, an EV owner in Hawaii spends about $1,598 on home charging versus $2,340 on gasoline — a saving of roughly $742 per year, or $3,708 over five years.