2026 Rivian R1T Tri Max (22in): home charging cost in Montana

In Montana, home electricity runs 13.77¢/kWh — put a 2026 Rivian R1T Tri Max (22in)'s EPA-rated 44.6 kWh/100mi against that and 100 miles costs $6.14, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 61.7% 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 2026 Rivian R1T Tri Max (22in) charged at home in Montana costs about $921/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,482 a year.

What one full charge costs

A 2026 Rivian R1T Tri Max (22in) needs roughly 165.4 kWh to reach its EPA-rated 371-mile range, which runs about $22.77 at 13.77¢/kWh in Montana.

2026 Rivian R1T Tri Max (22in) in Montana, ranked

This combination ranks 10,061 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1T Tri Max (22in) alone ranks 357 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

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. At 13.77¢/kWh, Montana sits in the middle of the national range — the guide to why charging cost varies by state shows where.