2027 Rivian R1S Quad (20in AT): home charging cost in Tennessee

In Tennessee, home electricity runs 13.9¢/kWh — put a 2027 Rivian R1S Quad (20in AT)'s EPA-rated 50.1 kWh/100mi against that and 100 miles costs $6.96, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 56.5% 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 2027 Rivian R1S Quad (20in AT) charged at home in Tennessee costs about $1,045/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,358 a year.

What one full charge costs

A 2027 Rivian R1S Quad (20in AT) needs roughly 162.8 kWh to reach its EPA-rated 325-mile range, which runs about $22.63 at 13.9¢/kWh in Tennessee.

How this compares nationally

This combination ranks 12,997 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Quad (20in AT) alone ranks 390 of 400 models for efficiency; Tennessee alone ranks 13 of 51 states for electricity price.

Next step: home charger installation

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.

Line up a few Tennessee electrician quotes for Level 2 install before you commit either way.

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.