2027 Rivian R1T Premium Long Range (20in), ID Charging Cost

Charging a 2027 Rivian R1T Premium Long Range (20in) at home in Idaho

In Idaho, home electricity runs 12.8¢/kWh, put a 2027 Rivian R1T Premium Long Range (20in)'s EPA-rated 42 kWh/100mi against that and 100 miles costs $5.37, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 66.5% cheaper per mile than gasoline in Idaho, charging at home costs a fraction of what gas would here.

What a year of driving costs

Idaho owners putting 15,000 annual miles on a 2027 Rivian R1T Premium Long Range (20in) spend about $806 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,597 saved annually, at this mileage.

Cost of a full charge

At Idaho's rate, fully covering this 2027 Rivian R1T Premium Long Range (20in)'s 380-mile EPA range costs about $20.42 (159.5 kWh), the energy the EPA test actually used, not the battery's rated size.

2027 Rivian R1T Premium Long Range (20in) in Idaho, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1T Premium Long Range (20in) in Idaho ranks 6,285 for cost savings versus gas, 1 being the best deal nationally. Separately, the Rivian R1T Premium Long Range (20in) ranks 297 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.