Montana home charging cost for the 2026 Rivian R1T Dual Large (22in)

In Montana, home electricity runs 13.77¢/kWh — put a 2026 Rivian R1T Dual Large (22in)'s EPA-rated 39.5 kWh/100mi against that and 100 miles costs $5.44, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home costs a fraction of what gas would here: 66.1% less than gas per mile, here specifically.

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

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1T Dual Large (22in) costs roughly $815 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 $1,588 a year.

Cost of a full charge

Covering the 2026 Rivian R1T Dual Large (22in)'s EPA-rated 329-mile range takes about 129.9 kWh, which costs about $17.88 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 6,633 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1T Dual Large (22in) alone ranks 252 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.

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

Where these figures come from

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.