2026 BMW i7 xDrive60 Sedan (21 inch Wheels): home charging cost in Tennessee

A 2026 BMW i7 xDrive60 Sedan (21 inch Wheels) draws 38.8 kWh per 100 miles per the EPA; at Tennessee's 13.9¢/kWh residential rate that's $5.39 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home costs a fraction of what gas would here: 66.4% 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 2026 BMW i7 xDrive60 Sedan (21 inch Wheels) charged at home in Tennessee costs about $808/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,595 a year.

Cost of a full charge

A 2026 BMW i7 xDrive60 Sedan (21 inch Wheels) needs roughly 119.4 kWh to reach its EPA-rated 308-mile range, which runs about $16.6 at 13.9¢/kWh in Tennessee.

Where this ranks

This combination ranks 6,416 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The BMW i7 xDrive60 Sedan (21 inch Wheels) alone ranks 232 of 400 models for efficiency; Tennessee alone ranks 13 of 51 states for electricity price.

Before you install a home charger in Tennessee

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 Tennessee electrician to quote the install before this math becomes a real decision.

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Tennessee's 13.9¢/kWh rate ranks 13 of 51 states; the state rate guide lays out the full spread.