2026 Tesla Model 3 Performance: home charging cost in Tennessee

At Tennessee's residential electricity rate of 13.9¢/kWh, a 2026 Tesla Model 3 Performance (rated 29.6 kWh per 100 miles by the EPA) costs $4.11 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. Charging at home costs a fraction of what gas would here: 74.3% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Tesla Model 3 Performance charged at home in Tennessee costs about $617/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,786 a year.

Filling up the 2026 Tesla Model 3 Performance, in dollars

A 2026 Tesla Model 3 Performance needs roughly 91.4 kWh to reach its EPA-rated 309-mile range, which runs about $12.71 at 13.9¢/kWh in Tennessee.

Where this ranks

This combination ranks 1,244 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Tesla Model 3 Performance alone ranks 52 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.

Get quotes from local electricians for Level 2 charger installation in Tennessee before deciding.

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. At 13.9¢/kWh, Tennessee sits in the middle of the national range — the guide to why charging cost varies by state shows where.