What it costs to charge a 2026 Rivian R1S Quad Max (22in UHP) in Tennessee

A 2026 Rivian R1S Quad Max (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. That works out to 58.9% cheaper per mile than gasoline in Tennessee — charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

Home charging this 2026 Rivian R1S Quad Max (22in UHP) in Tennessee runs about $987 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,416 saved annually, at this mileage.

Filling up the 2026 Rivian R1S Quad Max (22in UHP), in dollars

$22.24 — that's what Tennessee's 13.9¢/kWh rate puts on the 160 kWh a 2026 Rivian R1S Quad Max (22in UHP) needs for its full 338-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Quad Max (22in UHP) in Tennessee ranks 11,780 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Quad Max (22in UHP) ranks 373 of 400 EV models for raw efficiency, and Tennessee ranks 13 of 51 for cheapest residential electricity.

Next step: home charger installation

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.

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

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.