2026 Rivian R1S Dual Large Plus (22in), ID Charging Cost

Charging a 2026 Rivian R1S Dual Large Plus (22in) at home in Idaho

A 2026 Rivian R1S Dual Large Plus (22in) draws 40.9 kWh per 100 miles per the EPA; at Idaho's 12.8¢/kWh residential rate that's $5.24 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 67.3% cheaper per mile than gasoline in Idaho, charging at home costs a fraction of what gas would here.

2026 Rivian R1S Dual Large Plus (22in): yearly cost in Idaho

Idaho owners putting 15,000 annual miles on a 2026 Rivian R1S Dual Large Plus (22in) spend about $785 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,618 saved annually, at this mileage.

What one full charge costs

At Idaho's rate, fully covering this 2026 Rivian R1S Dual Large Plus (22in)'s 330-mile EPA range costs about $17.28 (135 kWh), the energy the EPA test actually used, not the battery's rated size.

2026 Rivian R1S Dual Large Plus (22in) in Idaho, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Dual Large Plus (22in) in Idaho ranks 5,624 for cost savings versus gas, 1 being the best deal nationally. Separately, the Rivian R1S Dual Large Plus (22in) ranks 278 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.