Charging a 2026 Rivian R1T Performance Dual Max (22in) at home in Idaho

In Idaho, home electricity runs 12.8¢/kWh — put a 2026 Rivian R1T Performance Dual Max (22in)'s EPA-rated 38.8 kWh/100mi against that and 100 miles costs $4.97, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 69% cheaper per mile than gasoline in Idaho — charging at home costs a fraction of what gas would here.

Annual cost, at 15 thousands miles a year

Idaho owners putting 15,000 annual miles on a 2026 Rivian R1T Performance Dual Max (22in) spend about $746 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,657 saved annually, at this mileage.

What one full charge costs

At Idaho's rate, fully covering this 2026 Rivian R1T Performance Dual Max (22in)'s 420-mile EPA range costs about $20.88 (163.1 kWh) — the energy the EPA test actually used, not the battery's rated size.

2026 Rivian R1T Performance Dual Max (22in) in Idaho, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1T Performance Dual Max (22in) in Idaho ranks 4,370 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1T Performance Dual Max (22in) ranks 235 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.

Ask a licensed Idaho electrician to quote the install before this math becomes a real decision.

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. 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.