What it costs to charge a 2026 Volvo EX40 Twin in Montana

A 2026 Volvo EX40 Twin draws 36 kWh per 100 miles per the EPA; at Montana's 13.77¢/kWh residential rate that's $4.95 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 69.1% cheaper per mile than gasoline in Montana — charging at home costs a fraction of what gas would here.

What a year of driving costs

Home charging this 2026 Volvo EX40 Twin in Montana runs about $743 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,660 saved annually, at this mileage.

Filling up the 2026 Volvo EX40 Twin, in dollars

$12.88 — that's what Montana's 13.77¢/kWh rate puts on the 93.5 kWh a 2026 Volvo EX40 Twin needs for its full 260-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Volvo EX40 Twin in Montana ranks 4,303 for cost savings versus gas — 1 being the best deal nationally. Separately, the Volvo EX40 Twin ranks 166 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.

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

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.