2026 Polestar 3 Long Range Single Motor (21 Inch Wheels): home charging cost in Montana

A 2026 Polestar 3 Long Range Single Motor (21 Inch Wheels) draws 34.7 kWh per 100 miles per the EPA; at Montana's 13.77¢/kWh residential rate that's $4.78 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home costs a fraction of what gas would here: 70.1% less than gas per mile, here specifically.

What a year of driving costs

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Polestar 3 Long Range Single Motor (21 Inch Wheels) charged at home in Montana costs about $717/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,686 a year.

Filling up the 2026 Polestar 3 Long Range Single Motor (21 Inch Wheels), in dollars

A 2026 Polestar 3 Long Range Single Motor (21 Inch Wheels) needs roughly 101.1 kWh to reach its EPA-rated 291-mile range, which runs about $13.92 at 13.77¢/kWh in Montana.

Where this ranks

This combination ranks 3,572 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Polestar 3 Long Range Single Motor (21 Inch Wheels) alone ranks 143 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. Montana's 13.77¢/kWh rate ranks 10 of 51 states; the state rate guide lays out the full spread.