Charging a 2027 Rivian R1S Premium Long Range (20in) at home in Tennessee

In Tennessee, home electricity runs 13.9¢/kWh — put a 2027 Rivian R1S Premium Long Range (20in)'s EPA-rated 42 kWh/100mi against that and 100 miles costs $5.83, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 63.6% cheaper per mile than gasoline in Tennessee — charging at home is much cheaper than gas here.

What a year of driving costs

Tennessee owners putting 15,000 annual miles on a 2027 Rivian R1S Premium Long Range (20in) spend about $875 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,528 saved annually, at this mileage.

Filling up the 2027 Rivian R1S Premium Long Range (20in), in dollars

At Tennessee's rate, fully covering this 2027 Rivian R1S Premium Long Range (20in)'s 380-mile EPA range costs about $22.17 (159.5 kWh) — the energy the EPA test actually used, not the battery's rated size.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1S Premium Long Range (20in) in Tennessee ranks 8,637 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Premium Long Range (20in) ranks 296 of 400 EV models for raw efficiency, and Tennessee ranks 13 of 51 for cheapest residential electricity.

Before you install a home charger in Tennessee

Everything above is the per-mile and per-year cost once a home charger exists — getting one installed is a separate electrical job whose price depends on your panel and wiring, not the state average used here.

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

More on how this number was built

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.