Tennessee home charging cost for the 2027 Rivian R1S Quad (22in UHP)

A 2027 Rivian R1S Quad (22in UHP) draws 47.3 kWh per 100 miles per the EPA; at Tennessee's 13.9¢/kWh residential rate that's $6.58 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home is much cheaper than gas here: 58.9% less than gas per mile, here specifically.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2027 Rivian R1S Quad (22in UHP) costs roughly $987 a year to charge at home in Tennessee, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,416 a year.

Cost of a full charge

Covering the 2027 Rivian R1S Quad (22in UHP)'s EPA-rated 338-mile range takes about 160 kWh, which costs about $22.24 at Tennessee's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

Where this ranks

This combination ranks 11,778 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Quad (22in UHP) alone ranks 371 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. At 13.9¢/kWh, Tennessee sits in the middle of the national range — the guide to why charging cost varies by state shows where.