Montana home charging cost for the 2026 Rivian R1T All-Terrain Dual Large (20in)

A 2026 Rivian R1T All-Terrain Dual Large (20in) draws 44.4 kWh per 100 miles per the EPA; at Montana's 13.77¢/kWh residential rate that's $6.11 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home is much cheaper than gas here: 61.9% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1T All-Terrain Dual Large (20in) costs roughly $916 a year to charge at home in Montana, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,487 a year.

What one full charge costs

Covering the 2026 Rivian R1T All-Terrain Dual Large (20in)'s EPA-rated 289-mile range takes about 128.2 kWh, which costs about $17.65 at Montana's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

How this compares nationally

This combination ranks 9,906 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1T All-Terrain Dual Large (20in) alone ranks 346 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 2026 Rivian R1T All-Terrain Dual Large (20in)'s cost in Montana. Curious how Montana's 13.77¢/kWh compares? The guide to charging cost by state ranks every state side by side.