Charging a 2026 Porsche Macan 4S Electric at home in Montana

A 2026 Porsche Macan 4S Electric draws 36.8 kWh per 100 miles per the EPA; at Montana's 13.77¢/kWh residential rate that's $5.07 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 68.4% cheaper per mile than gasoline in Montana — charging at home costs a fraction of what gas would here.

Annual cost, at 15 thousands miles a year

Montana owners putting 15,000 annual miles on a 2026 Porsche Macan 4S Electric spend about $760 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,643 saved annually, at this mileage.

What one full charge costs

At Montana's rate, fully covering this 2026 Porsche Macan 4S Electric's 290-mile EPA range costs about $14.69 (106.7 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 Porsche Macan 4S Electric in Montana ranks 4,815 for cost savings versus gas — 1 being the best deal nationally. Separately, the Porsche Macan 4S Electric ranks 185 of 400 EV models for raw efficiency, and Montana ranks 10 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Porsche Macan 4S Electric 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

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Curious how Montana's 13.77¢/kWh compares? The guide to charging cost by state ranks every state side by side.