Charging a 2026 Rivian R1S All-Terrain Performance Dual Large Plus (20in) at home in Wyoming

At Wyoming's residential electricity rate of 13.88¢/kWh, a 2026 Rivian R1S All-Terrain Performance Dual Large Plus (20in) (rated 46.9 kWh per 100 miles by the EPA) costs $6.51 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 59.4% cheaper per mile than gasoline in Wyoming — charging at home is much cheaper than gas here.

What a year of driving costs

Wyoming owners putting 15,000 annual miles on a 2026 Rivian R1S All-Terrain Performance Dual Large Plus (20in) spend about $976 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,427 saved annually, at this mileage.

Cost of a full charge

At Wyoming's rate, fully covering this 2026 Rivian R1S All-Terrain Performance Dual Large Plus (20in)'s 292-mile EPA range costs about $19 (136.9 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 All-Terrain Performance Dual Large Plus (20in) in Wyoming ranks 11,476 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S All-Terrain Performance Dual Large Plus (20in) ranks 366 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.

Line up a few Wyoming 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 13.88¢/kWh, Wyoming sits in the middle of the national range — the guide to why charging cost varies by state shows where.