What it costs to charge a 2026 Rivian R1T All-Terrain Dual Large Plus (20in) in Montana

A 2026 Rivian R1T All-Terrain Dual Large Plus (20in) draws 46.9 kWh per 100 miles per the EPA; at Montana's 13.77¢/kWh residential rate that's $6.46 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 59.7% cheaper per mile than gasoline in Montana — charging at home is much cheaper than gas here.

What a year of driving costs

Home charging this 2026 Rivian R1T All-Terrain Dual Large Plus (20in) in Montana runs about $968 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,434 saved annually, at this mileage.

What one full charge costs

$18.85 — that's what Montana's 13.77¢/kWh rate puts on the 136.9 kWh a 2026 Rivian R1T All-Terrain Dual Large Plus (20in) needs for its full 292-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1T All-Terrain Dual Large Plus (20in) in Montana ranks 11,311 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1T All-Terrain Dual Large Plus (20in) ranks 367 of 400 EV models for raw efficiency, and Montana ranks 10 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Rivian R1T All-Terrain Dual Large Plus (20in) at home

Everything above is the per-mile and per-year cost once a home charger exists — getting one installed is a separate electrical job whose price depends on your panel and wiring, not the state average used here.

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

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1T All-Terrain Dual Large Plus (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.