2027 BMW i7 xDrive50 Sedan (21 inch Summer Tires): home charging cost in Rhode Island

A 2027 BMW i7 xDrive50 Sedan (21 inch Summer Tires) draws 36.8 kWh per 100 miles per the EPA; at Rhode Island's 29.45¢/kWh residential rate that's $10.83 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home is cheaper than gas here: 32.4% less than gas per mile, here specifically.

What a year of driving costs

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2027 BMW i7 xDrive50 Sedan (21 inch Summer Tires) charged at home in Rhode Island costs about $1,624/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $779 a year.

Cost of a full charge

A 2027 BMW i7 xDrive50 Sedan (21 inch Summer Tires) needs roughly 133.8 kWh to reach its EPA-rated 364-mile range, which runs about $39.41 at 29.45¢/kWh in Rhode Island.

2027 BMW i7 xDrive50 Sedan (21 inch Summer Tires) in Rhode Island, ranked

This combination ranks 18,202 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The BMW i7 xDrive50 Sedan (21 inch Summer Tires) alone ranks 184 of 400 models for efficiency; Rhode Island alone ranks 47 of 51 states for electricity price.

Before you install a home charger in Rhode Island

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.

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

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Rhode Island 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.