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

A 2026 Rivian R1T Performance Dual Large Plus (22in) draws 40.9 kWh per 100 miles per the EPA; at Montana's 13.77¢/kWh residential rate that's $5.63 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home is much cheaper than gas here: 64.8% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rivian R1T Performance Dual Large Plus (22in) costs roughly $845 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 $1,558 a year.

Cost of a full charge

Covering the 2026 Rivian R1T Performance Dual Large Plus (22in)'s EPA-rated 330-mile range takes about 135 kWh, which costs about $18.59 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 7,635 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1T Performance Dual Large Plus (22in) alone ranks 281 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.

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

Where these figures come from

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.