2027 Rivian R1T Premium Long Range (20in AT): home charging cost in Montana

At Montana's residential electricity rate of 13.77¢/kWh, a 2027 Rivian R1T Premium Long Range (20in AT) (rated 43.2 kWh per 100 miles by the EPA) costs $5.95 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. Charging at home is much cheaper than gas here: 62.8% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2027 Rivian R1T Premium Long Range (20in AT) charged at home in Montana costs about $893/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,510 a year.

Filling up the 2027 Rivian R1T Premium Long Range (20in AT), in dollars

A 2027 Rivian R1T Premium Long Range (20in AT) needs roughly 159.9 kWh to reach its EPA-rated 370-mile range, which runs about $22.02 at 13.77¢/kWh in Montana.

Where this ranks

This combination ranks 9,225 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1T Premium Long Range (20in AT) alone ranks 332 of 400 models for efficiency; Montana alone ranks 10 of 51 states for electricity price.

Next step: home charger installation

The numbers above assume Level 2 home charging is already in place — the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.

Get quotes from local electricians for Level 2 charger installation in Montana before deciding.

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2027 Rivian R1T Premium Long Range (20in AT)'s cost in Montana. Montana's 13.77¢/kWh rate ranks 10 of 51 states; the state rate guide lays out the full spread.