Home › States › Montana
EV vs gas cost in Montana: $1,189 a year saved at 12,000 miles
With Montana electricity at 13.95¢/kWh and regular gasoline at $4.47/gal, a typical EV (0.3 kWh/mile, charged 80% at home) costs about 6.0¢ per mile to run versus 16.0¢ per mile for a 28 mpg gas car. That beats gas by $1,189 a year at 12,000 miles. Montana ranks #8 of 51 (50 states + DC) for annual savings and #10 for lowest residential electricity price.
Your numbers
Defaults are the latest EIA averages for the state you pick; overwrite any box with your own bill or pump price. Everything runs in your browser; nothing is sent anywhere.
What the Montana numbers say
- Electricity: Montana residential average is 13.95¢/kWh year-to-date through July 2026, 23% below the U.S. average of 18.19¢. It is up 11.3% from the same period in 2025. Latest single month (July 2026): 14.99¢.
- Gasoline: $4.47/gal (EIA regional series: Rocky Mountain (PADD4)), up $1.47 from a year ago. The U.S. average is $4.28.
- Cost-equivalent MPG: a gas car would need about 74 mpg to cost the same per mile as this EV in Montana.
- If prices move: at 20% cheaper gas ($3.57) the yearly EV saving would be $806; at 20% higher electricity (16.74¢) it would be $1,109.
What this leaves out: purchase price, tax credits, insurance, maintenance, depreciation, home charger installation, time-of-use rates and cold-weather range loss. Your utility's own rate may differ from the state average. See the methodology.
Cost to run common things in Montana
- Space heater (1,500 W): $0.21 per hour
- Electric blanket (200 W): $0.22 per 8-hour night
- Window air conditioner (1,000 W): $0.14 per hour
- Electric clothes dryer: $0.42 per load
- Dishwasher: $0.14 per load
- Refrigerator: $63 per year
- Gaming PC (300 W under load): $0.04 per hour
- EV home charging (per 100 miles): $4.18 per 100 miles
Heating this winter? In Montana a heat pump costs about $16.35 per million BTU of heat vs $9.36 for a gas furnace and $24.95 for propane. Heat pump vs furnace in Montana.