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

At Wyoming's residential electricity rate of 13.88¢/kWh, a 2026 Rivian R1S Quad Max (22in) (rated 44.4 kWh per 100 miles by the EPA) costs $6.16 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. That works out to 61.6% cheaper per mile than gasoline in Wyoming — 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) in Wyoming runs about $924 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,479 saved annually, at this mileage.

What one full charge costs

$23.03 — that's what Wyoming's 13.88¢/kWh rate puts on the 166 kWh a 2026 Rivian R1S Quad Max (22in) needs for its full 374-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) in Wyoming ranks 10,155 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Quad Max (22in) ranks 350 of 400 EV models for raw efficiency, and Wyoming ranks 12 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.

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

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1S Quad Max (22in)'s cost in Wyoming. Wyoming's 13.88¢/kWh rate ranks 12 of 51 states; the state rate guide lays out the full spread.