2026 Tesla Model 3 Premium AWD: home charging cost in Montana

A 2026 Tesla Model 3 Premium AWD draws 26.4 kWh per 100 miles per the EPA; at Montana's 13.77¢/kWh residential rate that's $3.63 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home costs a fraction of what gas would here: 77.3% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Tesla Model 3 Premium AWD charged at home in Montana costs about $545/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,858 a year.

What one full charge costs

A 2026 Tesla Model 3 Premium AWD needs roughly 91.3 kWh to reach its EPA-rated 346-mile range, which runs about $12.57 at 13.77¢/kWh in Montana.

Where this ranks

This combination ranks 306 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Tesla Model 3 Premium AWD alone ranks 12 of 400 models for efficiency; Montana alone ranks 10 of 51 states for electricity price.

Getting set up to charge a 2026 Tesla Model 3 Premium AWD 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.

Get quotes from local electricians for Level 2 charger installation in Montana before deciding.

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2026 Tesla Model 3 Premium AWD'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.