What it costs to charge a 2027 Rivian R1S Quad (22in UHP) in Idaho

A 2027 Rivian R1S Quad (22in UHP) draws 47.3 kWh per 100 miles per the EPA; at Idaho's 12.8¢/kWh residential rate that's $6.06 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 62.2% cheaper per mile than gasoline in Idaho — charging at home is much cheaper than gas here.

2027 Rivian R1S Quad (22in UHP): yearly cost in Idaho

Home charging this 2027 Rivian R1S Quad (22in UHP) in Idaho runs about $909 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,494 saved annually, at this mileage.

Cost of a full charge

$20.48 — that's what Idaho's 12.8¢/kWh rate puts on the 160 kWh a 2027 Rivian R1S Quad (22in UHP) needs for its full 338-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1S Quad (22in UHP) in Idaho ranks 9,668 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Quad (22in UHP) ranks 371 of 400 EV models for raw efficiency, and Idaho ranks 3 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 Idaho 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. Idaho is one of the cheapest states for home electricity — the guide to why the cost varies so much by state covers what drives that.