2026 Rivian R1T All-Terrain Tri Max (20in), ID Charging Cost

Charging a 2026 Rivian R1T All-Terrain Tri Max (20in) at home in Idaho

A 2026 Rivian R1T All-Terrain Tri Max (20in) draws 49.8 kWh per 100 miles per the EPA; at Idaho's 12.8¢/kWh residential rate that's $6.38 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 60.2% cheaper per mile than gasoline in Idaho, charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

Idaho owners putting 15,000 annual miles on a 2026 Rivian R1T All-Terrain Tri Max (20in) spend about $957 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,446 saved annually, at this mileage.

Filling up the 2026 Rivian R1T All-Terrain Tri Max (20in), in dollars

At Idaho's rate, fully covering this 2026 Rivian R1T All-Terrain Tri Max (20in)'s 329-mile EPA range costs about $20.99 (164 kWh), the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1T All-Terrain Tri Max (20in) in Idaho ranks 10,962 for cost savings versus gas, 1 being the best deal nationally. Separately, the Rivian R1T All-Terrain Tri Max (20in) ranks 389 of 400 EV models for raw efficiency, and Idaho ranks 3 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Rivian R1T All-Terrain Tri Max (20in) 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

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.