Charging a 2026 Rivian R1S Quad Max (20in AT) at home in Wyoming

A 2026 Rivian R1S Quad Max (20in AT) draws 50.1 kWh per 100 miles per the EPA; at Wyoming's 13.88¢/kWh residential rate that's $6.95 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 56.6% cheaper per mile than gasoline in Wyoming — charging at home is much cheaper than gas here.

2026 Rivian R1S Quad Max (20in AT): yearly cost in Wyoming

Wyoming owners putting 15,000 annual miles on a 2026 Rivian R1S Quad Max (20in AT) spend about $1,043 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,360 saved annually, at this mileage.

What one full charge costs

At Wyoming's rate, fully covering this 2026 Rivian R1S Quad Max (20in AT)'s 325-mile EPA range costs about $22.6 (162.8 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 Quad Max (20in AT) in Wyoming ranks 12,974 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Quad Max (20in AT) ranks 392 of 400 EV models for raw efficiency, and Wyoming ranks 12 of 51 for cheapest residential electricity.

Before you install a home charger in Wyoming

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 Wyoming electrician quotes for Level 2 install before you commit either way.

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Curious how Wyoming's 13.88¢/kWh compares? The guide to charging cost by state ranks every state side by side.