Charging a 2026 Polestar 3 Long Range Single Motor (21 Inch Wheels) at home in Idaho

At Idaho's residential electricity rate of 12.8¢/kWh, a 2026 Polestar 3 Long Range Single Motor (21 Inch Wheels) (rated 34.7 kWh per 100 miles by the EPA) costs $4.45 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. That works out to 72.2% cheaper per mile than gasoline in Idaho — charging at home costs a fraction of what gas would here.

What a year of driving costs

Idaho owners putting 15,000 annual miles on a 2026 Polestar 3 Long Range Single Motor (21 Inch Wheels) spend about $667 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,736 saved annually, at this mileage.

Cost of a full charge

At Idaho's rate, fully covering this 2026 Polestar 3 Long Range Single Motor (21 Inch Wheels)'s 291-mile EPA range costs about $12.94 (101.1 kWh) — the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Polestar 3 Long Range Single Motor (21 Inch Wheels) in Idaho ranks 2,235 for cost savings versus gas — 1 being the best deal nationally. Separately, the Polestar 3 Long Range Single Motor (21 Inch Wheels) ranks 143 of 400 EV models for raw efficiency, and Idaho ranks 3 of 51 for cheapest residential electricity.

Next step: home charger installation

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 Idaho electrician to quote the install before this math becomes a real decision.

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Idaho is one of the cheapest states for home electricity — the guide to why the cost varies so much by state covers what drives that.