Charging a 2026 BMW i7 M70 xDrive Sedan (21 inch Wheels) at home in Maine

In Maine, home electricity runs 29.67¢/kWh — put a 2026 BMW i7 M70 xDrive Sedan (21 inch Wheels)'s EPA-rated 42.5 kWh/100mi against that and 100 miles costs $12.59, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 21.4% cheaper per mile than gasoline in Maine — charging at home is cheaper than gas here.

2026 BMW i7 M70 xDrive Sedan (21 inch Wheels): yearly cost in Maine

Maine owners putting 15,000 annual miles on a 2026 BMW i7 M70 xDrive Sedan (21 inch Wheels) spend about $1,889 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $514 saved annually, at this mileage.

What one full charge costs

At Maine's rate, fully covering this 2026 BMW i7 M70 xDrive Sedan (21 inch Wheels)'s 285-mile EPA range costs about $35.9 (121 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 BMW i7 M70 xDrive Sedan (21 inch Wheels) in Maine ranks 19,326 for cost savings versus gas — 1 being the best deal nationally. Separately, the BMW i7 M70 xDrive Sedan (21 inch Wheels) ranks 310 of 400 EV models for raw efficiency, and Maine ranks 48 of 51 for cheapest residential electricity.

Next step: home charger installation

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.

Ask a licensed Maine electrician to quote the install before this math becomes a real decision.

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Maine has some of the highest residential electricity rates in the country — see the guide to why the cost varies so much by state for the full picture.