Idaho home charging cost for the 2027 Rivian R1T Quad (22in UHP)
At Idaho's residential electricity rate of 12.8¢/kWh, a 2027 Rivian R1T Quad (22in UHP) (rated 47.3 kWh per 100 miles by the EPA) costs $6.06 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. Charging at home is much cheaper than gas here: 62.2% less than gas per mile, here specifically.
2027 Rivian R1T Quad (22in UHP): yearly cost in Idaho
At fueleconomy.gov's default of 15,000 annual miles, the 2027 Rivian R1T Quad (22in UHP) costs roughly $909 a year to charge at home in Idaho, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,494 a year.
What one full charge costs
Covering the 2027 Rivian R1T Quad (22in UHP)'s EPA-rated 338-mile range takes about 160 kWh, which costs about $20.48 at Idaho's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.
Where this ranks
This combination ranks 9,669 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1T Quad (22in UHP) alone ranks 372 of 400 models for efficiency; Idaho alone ranks 3 of 51 states for electricity price.
Getting set up to charge a 2027 Rivian R1T Quad (22in UHP) at home
The numbers above assume Level 2 home charging is already in place — the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.
Ask a licensed Idaho electrician to quote the install before this math becomes a real decision.
Where these figures come from
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.