What it costs to charge a 2026 Rivian R1T Performance Dual Large (20in) in Montana

In Montana, home electricity runs 13.77¢/kWh — put a 2026 Rivian R1T Performance Dual Large (20in)'s EPA-rated 42.9 kWh/100mi against that and 100 miles costs $5.9, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 63.1% cheaper per mile than gasoline in Montana — charging at home is much cheaper than gas here.

2026 Rivian R1T Performance Dual Large (20in): yearly cost in Montana

Home charging this 2026 Rivian R1T Performance Dual Large (20in) in Montana runs about $886 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,517 saved annually, at this mileage.

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

$17.71 — that's what Montana's 13.77¢/kWh rate puts on the 128.6 kWh a 2026 Rivian R1T Performance Dual Large (20in) needs for its full 300-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1T Performance Dual Large (20in) in Montana ranks 8,982 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1T Performance Dual Large (20in) ranks 319 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 Performance Dual Large (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.

Line up a few Montana electrician quotes for Level 2 install before you commit either way.

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Montana's 13.77¢/kWh rate ranks 10 of 51 states; the state rate guide lays out the full spread.