Charging a 2026 Porsche Taycan GTS Sport Turismo at home in Montana

A 2026 Porsche Taycan GTS Sport Turismo draws 41 kWh per 100 miles per the EPA; at Montana's 13.77¢/kWh residential rate that's $5.65 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 64.7% cheaper per mile than gasoline in Montana — charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

Montana owners putting 15,000 annual miles on a 2026 Porsche Taycan GTS Sport Turismo spend about $848 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,555 saved annually, at this mileage.

What one full charge costs

At Montana's rate, fully covering this 2026 Porsche Taycan GTS Sport Turismo's 279-mile EPA range costs about $15.77 (114.5 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 Taycan GTS Sport Turismo in Montana ranks 7,738 for cost savings versus gas — 1 being the best deal nationally. Separately, the Porsche Taycan GTS Sport Turismo ranks 287 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 Taycan GTS Sport Turismo 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.

Line up a few Montana electrician quotes for Level 2 install before you commit either way.

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 Porsche Taycan GTS Sport Turismo's cost in Montana. Curious how Montana's 13.77¢/kWh compares? The guide to charging cost by state ranks every state side by side.