2026 Rivian R1S Dual Max (22in): home charging cost in Wyoming

A 2026 Rivian R1S Dual Max (22in) draws 39.9 kWh per 100 miles per the EPA; at Wyoming's 13.88¢/kWh residential rate that's $5.54 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home costs a fraction of what gas would here: 65.4% less than gas per mile, here specifically.

2026 Rivian R1S Dual Max (22in): yearly cost in Wyoming

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Rivian R1S Dual Max (22in) charged at home in Wyoming costs about $832/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,571 a year.

Cost of a full charge

A 2026 Rivian R1S Dual Max (22in) needs roughly 163.7 kWh to reach its EPA-rated 410-mile range, which runs about $22.73 at 13.88¢/kWh in Wyoming.

Where this ranks

This combination ranks 7,236 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Dual Max (22in) alone ranks 265 of 400 models for efficiency; Wyoming alone ranks 12 of 51 states for electricity price.

Next step: home charger installation

The numbers above assume Level 2 home charging is already in place — the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.

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

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Curious how Wyoming's 13.88¢/kWh compares? The guide to charging cost by state ranks every state side by side.