What it costs to charge a 2026 Rivian R1T Quad Max (22in UHP) in Idaho

A 2026 Rivian R1T Quad Max (22in UHP) draws 47.3 kWh per 100 miles per the EPA; at Idaho's 12.8¢/kWh residential rate that's $6.06 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 62.2% cheaper per mile than gasoline in Idaho — charging at home is much cheaper than gas here.

What a year of driving costs

Home charging this 2026 Rivian R1T Quad Max (22in UHP) in Idaho runs about $909 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,494 saved annually, at this mileage.

What one full charge costs

$20.48 — that's what Idaho's 12.8¢/kWh rate puts on the 160 kWh a 2026 Rivian R1T Quad Max (22in UHP) needs for its full 338-mile EPA range.

2026 Rivian R1T Quad Max (22in UHP) in Idaho, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1T Quad Max (22in UHP) in Idaho ranks 9,671 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1T Quad Max (22in UHP) ranks 374 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 Quad Max (22in UHP) 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.

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.