Charging a 2026 Rivian R1T Performance Dual Large (22in) at home in Montana

A 2026 Rivian R1T Performance Dual Large (22in) draws 39.5 kWh per 100 miles per the EPA; at Montana's 13.77¢/kWh residential rate that's $5.44 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 66.1% cheaper per mile than gasoline in Montana — charging at home costs a fraction of what gas would here.

2026 Rivian R1T Performance Dual Large (22in): yearly cost in Montana

Montana owners putting 15,000 annual miles on a 2026 Rivian R1T Performance Dual Large (22in) spend about $815 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,588 saved annually, at this mileage.

What one full charge costs

At Montana's rate, fully covering this 2026 Rivian R1T Performance Dual Large (22in)'s 329-mile EPA range costs about $17.88 (129.9 kWh) — the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1T Performance Dual Large (22in) in Montana ranks 6,634 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1T Performance Dual Large (22in) ranks 253 of 400 EV models for raw efficiency, and Montana ranks 10 of 51 for cheapest residential electricity.

Before you install a home charger in Montana

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

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Curious how Montana's 13.77¢/kWh compares? The guide to charging cost by state ranks every state side by side.