What it costs to charge a 2027 Rivian R1S Premium Long Range (20in AT) in Wyoming

A 2027 Rivian R1S Premium Long Range (20in AT) draws 43.2 kWh per 100 miles per the EPA; at Wyoming's 13.88¢/kWh residential rate that's $6 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 62.5% cheaper per mile than gasoline in Wyoming — charging at home is much cheaper than gas here.

What a year of driving costs

Home charging this 2027 Rivian R1S Premium Long Range (20in AT) in Wyoming runs about $900 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,503 saved annually, at this mileage.

Filling up the 2027 Rivian R1S Premium Long Range (20in AT), in dollars

$22.2 — that's what Wyoming's 13.88¢/kWh rate puts on the 159.9 kWh a 2027 Rivian R1S Premium Long Range (20in AT) needs for its full 370-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1S Premium Long Range (20in AT) in Wyoming ranks 9,510 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Premium Long Range (20in AT) ranks 331 of 400 EV models for raw efficiency, and Wyoming ranks 12 of 51 for cheapest residential electricity.

Getting set up to charge a 2027 Rivian R1S Premium Long Range (20in AT) at home

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. Curious how Wyoming's 13.88¢/kWh compares? The guide to charging cost by state ranks every state side by side.