2026 Rivian R1T All-Terrain Tri Max (20in): home charging cost in Montana

In Montana, home electricity runs 13.77¢/kWh — put a 2026 Rivian R1T All-Terrain Tri Max (20in)'s EPA-rated 49.8 kWh/100mi against that and 100 miles costs $6.86, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 57.2% less than gas per mile, here specifically.

What a year of driving costs

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Rivian R1T All-Terrain Tri Max (20in) charged at home in Montana costs about $1,029/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,374 a year.

Filling up the 2026 Rivian R1T All-Terrain Tri Max (20in), in dollars

A 2026 Rivian R1T All-Terrain Tri Max (20in) needs roughly 164 kWh to reach its EPA-rated 329-mile range, which runs about $22.58 at 13.77¢/kWh in Montana.

2026 Rivian R1T All-Terrain Tri Max (20in) in Montana, ranked

This combination ranks 12,677 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1T All-Terrain Tri Max (20in) alone ranks 389 of 400 models for efficiency; Montana alone ranks 10 of 51 states for electricity price.

Before you install a home charger in Montana

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 2026 Rivian R1T All-Terrain Tri Max (20in)'s cost in Montana. Montana's 13.77¢/kWh rate ranks 10 of 51 states; the state rate guide lays out the full spread.