2026 Rivian R1T All-Terrain Dual Large (20in), ID Charging…

Charging a 2026 Rivian R1T All-Terrain Dual Large (20in) at home in Idaho

At Idaho's residential electricity rate of 12.8¢/kWh, a 2026 Rivian R1T All-Terrain Dual Large (20in) (rated 44.4 kWh per 100 miles by the EPA) costs $5.68 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. That works out to 64.6% cheaper per mile than gasoline in Idaho, charging at home is much cheaper than gas here.

2026 Rivian R1T All-Terrain Dual Large (20in): yearly cost in Idaho

Idaho owners putting 15,000 annual miles on a 2026 Rivian R1T All-Terrain Dual Large (20in) spend about $852 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,551 saved annually, at this mileage.

Filling up the 2026 Rivian R1T All-Terrain Dual Large (20in), in dollars

At Idaho's rate, fully covering this 2026 Rivian R1T All-Terrain Dual Large (20in)'s 289-mile EPA range costs about $16.41 (128.2 kWh), the energy the EPA test actually used, not the battery's rated size.

2026 Rivian R1T All-Terrain Dual Large (20in) in Idaho, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1T All-Terrain Dual Large (20in) in Idaho ranks 7,804 for cost savings versus gas, 1 being the best deal nationally. Separately, the Rivian R1T All-Terrain Dual Large (20in) ranks 346 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

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1T All-Terrain Dual Large (20in)'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.