Montana home charging cost for the 2026 Porsche Taycan 4S Performance Battery

In Montana, home electricity runs 13.77¢/kWh — put a 2026 Porsche Taycan 4S Performance Battery's EPA-rated 38.4 kWh/100mi against that and 100 miles costs $5.29, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home costs a fraction of what gas would here: 66.9% less than gas per mile, here specifically.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Porsche Taycan 4S Performance Battery costs roughly $794 a year to charge at home in Montana, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,609 a year.

What one full charge costs

Covering the 2026 Porsche Taycan 4S Performance Battery's EPA-rated 252-mile range takes about 96.9 kWh, which costs about $13.34 at Montana's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

Where this ranks

This combination ranks 5,978 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Porsche Taycan 4S Performance Battery alone ranks 225 of 400 models for efficiency; Montana alone ranks 10 of 51 states for electricity price.

Getting set up to charge a 2026 Porsche Taycan 4S Performance Battery at home

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.

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

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2026 Porsche Taycan 4S Performance Battery's cost in Montana. At 13.77¢/kWh, Montana sits in the middle of the national range — the guide to why charging cost varies by state shows where.