2026 Porsche Macan GTS Electric: home charging cost in Tennessee

At Tennessee's residential electricity rate of 13.9¢/kWh, a 2026 Porsche Macan GTS Electric (rated 36.7 kWh per 100 miles by the EPA) costs $5.1 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: 68.1% 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 Porsche Macan GTS Electric charged at home in Tennessee costs about $765/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,638 a year.

What one full charge costs

A 2026 Porsche Macan GTS Electric needs roughly 107.9 kWh to reach its EPA-rated 294-mile range, which runs about $15 at 13.9¢/kWh in Tennessee.

How this compares nationally

This combination ranks 5,068 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Porsche Macan GTS Electric alone ranks 183 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

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Tennessee's 13.9¢/kWh rate ranks 13 of 51 states; the state rate guide lays out the full spread.