Montana home charging cost for the 2027 BMW i5 eDrive40 Sedan (20 inch Wheels)

In Montana, home electricity runs 13.77¢/kWh — put a 2027 BMW i5 eDrive40 Sedan (20 inch Wheels)'s EPA-rated 31.9 kWh/100mi against that and 100 miles costs $4.39, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home costs a fraction of what gas would here: 72.6% less than gas per mile, here specifically.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2027 BMW i5 eDrive40 Sedan (20 inch Wheels) costs roughly $658 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 $1,745 a year.

What one full charge costs

Covering the 2027 BMW i5 eDrive40 Sedan (20 inch Wheels)'s EPA-rated 299-mile range takes about 95.3 kWh, which costs about $13.12 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 2,025 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The BMW i5 eDrive40 Sedan (20 inch Wheels) alone ranks 84 of 400 models for efficiency; Montana alone ranks 10 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.

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 2027 BMW i5 eDrive40 Sedan (20 inch Wheels)'s cost in Montana. Montana's 13.77¢/kWh rate ranks 10 of 51 states; the state rate guide lays out the full spread.