Charging a 2026 Rivian R1T Dual Large Plus (20in) at home in Montana

In Montana, home electricity runs 13.77¢/kWh — put a 2026 Rivian R1T Dual Large Plus (20in)'s EPA-rated 43.1 kWh/100mi against that and 100 miles costs $5.94, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 62.9% cheaper per mile than gasoline in Montana — charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

Montana owners putting 15,000 annual miles on a 2026 Rivian R1T Dual Large Plus (20in) spend about $891 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,512 saved annually, at this mileage.

Filling up the 2026 Rivian R1T Dual Large Plus (20in), in dollars

At Montana's rate, fully covering this 2026 Rivian R1T Dual Large Plus (20in)'s 317-mile EPA range costs about $18.82 (136.7 kWh) — the energy the EPA test actually used, not the battery's rated size.

2026 Rivian R1T Dual Large Plus (20in) in Montana, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1T Dual Large Plus (20in) in Montana ranks 9,129 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1T Dual Large Plus (20in) ranks 329 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.

Ask a licensed Montana electrician to quote the install before this math becomes a real decision.

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Curious how Montana's 13.77¢/kWh compares? The guide to charging cost by state ranks every state side by side.