Montana home charging cost for the 2026 Rivian R1T Quad Max (20in AT)

In Montana, home electricity runs 13.77¢/kWh — put a 2026 Rivian R1T Quad Max (20in AT)'s EPA-rated 50.1 kWh/100mi against that and 100 miles costs $6.9, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 56.9% less than gas per mile, here specifically.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1T Quad Max (20in AT) costs roughly $1,035 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 $1,368 a year.

What one full charge costs

Covering the 2026 Rivian R1T Quad Max (20in AT)'s EPA-rated 325-mile range takes about 162.8 kWh, which costs about $22.42 at Montana's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

2026 Rivian R1T Quad Max (20in AT) in Montana, ranked

This combination ranks 12,812 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1T Quad Max (20in AT) alone ranks 393 of 400 models for efficiency; Montana alone ranks 10 of 51 states for electricity price.

Getting set up to charge a 2026 Rivian R1T Quad Max (20in AT) at home

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.

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

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.