What it costs to charge a 2027 Rivian R1S Quad (20in AT) in Idaho

A 2027 Rivian R1S Quad (20in AT) draws 50.1 kWh per 100 miles per the EPA; at Idaho's 12.8¢/kWh residential rate that's $6.41 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 60% cheaper per mile than gasoline in Idaho — charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

Home charging this 2027 Rivian R1S Quad (20in AT) in Idaho runs about $962 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,441 saved annually, at this mileage.

Cost of a full charge

$20.84 — that's what Idaho's 12.8¢/kWh rate puts on the 162.8 kWh a 2027 Rivian R1S Quad (20in AT) needs for its full 325-mile EPA range.

2027 Rivian R1S Quad (20in AT) in Idaho, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1S Quad (20in AT) in Idaho ranks 11,114 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Quad (20in AT) ranks 390 of 400 EV models for raw efficiency, and Idaho ranks 3 of 51 for cheapest residential electricity.

Getting set up to charge a 2027 Rivian R1S Quad (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 Idaho electrician quotes for Level 2 install before you commit either way.

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2027 Rivian R1S Quad (20in AT)'s cost in Idaho. 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.