Charging a 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) at home in California

In California, home electricity runs 33.17¢/kWh — put a 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires)'s EPA-rated 37.4 kWh/100mi against that and 100 miles costs $12.42, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 22.5% cheaper per mile than gasoline in California — charging at home is cheaper than gas here.

Annual cost, at 15 thousands miles a year

California owners putting 15,000 annual miles on a 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) spend about $1,863 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $540 saved annually, at this mileage.

Cost of a full charge

At California's rate, fully covering this 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires)'s 354-mile EPA range costs about $43.96 (132.5 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 2027 BMW i7 xDrive50 Sedan (20 inch All-Season Tires) in California ranks 19,240 for cost savings versus gas — 1 being the best deal nationally. Separately, the BMW i7 xDrive50 Sedan (20 inch All-Season Tires) ranks 204 of 400 EV models for raw efficiency, and California ranks 50 of 51 for cheapest residential electricity.

Before you install a home charger in California

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 California 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. California 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.