Idaho home charging cost for the 2026 Polestar 4 Long Range Single Motor

In Idaho, home electricity runs 12.8¢/kWh — put a 2026 Polestar 4 Long Range Single Motor's EPA-rated 35 kWh/100mi against that and 100 miles costs $4.48, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home costs a fraction of what gas would here: 72% less than gas per mile, here specifically.

2026 Polestar 4 Long Range Single Motor: yearly cost in Idaho

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Polestar 4 Long Range Single Motor costs roughly $672 a year to charge at home in Idaho, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,731 a year.

What one full charge costs

Covering the 2026 Polestar 4 Long Range Single Motor's EPA-rated 310-mile range takes about 108.5 kWh, which costs about $13.89 at Idaho's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

2026 Polestar 4 Long Range Single Motor in Idaho, ranked

This combination ranks 2,391 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Polestar 4 Long Range Single Motor alone ranks 148 of 400 models for efficiency; Idaho alone ranks 3 of 51 states for electricity price.

Next step: home charger installation

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.

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

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2026 Polestar 4 Long Range Single Motor's cost in Idaho. 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.