Charging a 2026 BMW i7 eDrive50 Sedan (21 inch Wheels) at home in Wisconsin

A 2026 BMW i7 eDrive50 Sedan (21 inch Wheels) draws 38.9 kWh per 100 miles per the EPA; at Wisconsin's 18.99¢/kWh residential rate that's $7.4 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 53.8% cheaper per mile than gasoline in Wisconsin — charging at home is much cheaper than gas here.

What a year of driving costs

Wisconsin owners putting 15,000 annual miles on a 2026 BMW i7 eDrive50 Sedan (21 inch Wheels) spend about $1,109 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,293 saved annually, at this mileage.

What one full charge costs

At Wisconsin's rate, fully covering this 2026 BMW i7 eDrive50 Sedan (21 inch Wheels)'s 307-mile EPA range costs about $22.71 (119.6 kWh) — the energy the EPA test actually used, not the battery's rated size.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 BMW i7 eDrive50 Sedan (21 inch Wheels) in Wisconsin ranks 14,029 for cost savings versus gas — 1 being the best deal nationally. Separately, the BMW i7 eDrive50 Sedan (21 inch Wheels) ranks 236 of 400 EV models for raw efficiency, and Wisconsin ranks 35 of 51 for cheapest residential electricity.

Before you install a home charger in Wisconsin

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 Wisconsin electrician quotes for Level 2 install before you commit either way.

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Wisconsin's 18.99¢/kWh rate ranks 35 of 51 states; the state rate guide lays out the full spread.