Charging a 2026 Polestar 4 Long Range Single Motor at home in Montana

A 2026 Polestar 4 Long Range Single Motor draws 35 kWh per 100 miles per the EPA; at Montana's 13.77¢/kWh residential rate that's $4.82 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 69.9% cheaper per mile than gasoline in Montana — charging at home costs a fraction of what gas would here.

What a year of driving costs

Montana owners putting 15,000 annual miles on a 2026 Polestar 4 Long Range Single Motor spend about $723 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,680 saved annually, at this mileage.

Cost of a full charge

At Montana's rate, fully covering this 2026 Polestar 4 Long Range Single Motor's 310-mile EPA range costs about $14.94 (108.5 kWh) — the energy the EPA test actually used, not the battery's rated size.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Polestar 4 Long Range Single Motor in Montana ranks 3,708 for cost savings versus gas — 1 being the best deal nationally. Separately, the Polestar 4 Long Range Single Motor ranks 148 of 400 EV models for raw efficiency, and Montana ranks 10 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Polestar 4 Long Range Single Motor 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.

Ask a licensed Montana electrician to quote the install before this math becomes a real decision.

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.