Charging a 2026 Rivian R1S Tri Max (22in) at home in Tennessee

In Tennessee, home electricity runs 13.9¢/kWh — put a 2026 Rivian R1S Tri Max (22in)'s EPA-rated 44.6 kWh/100mi against that and 100 miles costs $6.2, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 61.3% cheaper per mile than gasoline in Tennessee — charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

Tennessee owners putting 15,000 annual miles on a 2026 Rivian R1S Tri Max (22in) spend about $929 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,474 saved annually, at this mileage.

What one full charge costs

At Tennessee's rate, fully covering this 2026 Rivian R1S Tri Max (22in)'s 371-mile EPA range costs about $22.99 (165.4 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 2026 Rivian R1S Tri Max (22in) in Tennessee ranks 10,354 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Tri Max (22in) ranks 356 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.

Get quotes from local electricians for Level 2 charger installation in Tennessee before deciding.

More on how this number was built

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.