Charging a 2026 Lexus RZ 450e AWD (20 inch wheels - 235/50R20) at home in Idaho
At Idaho's residential electricity rate of 12.8¢/kWh, a 2026 Lexus RZ 450e AWD (20 inch wheels - 235/50R20) (rated 31.2 kWh per 100 miles by the EPA) costs $3.99 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 75.1% cheaper per mile than gasoline in Idaho — charging at home costs a fraction of what gas would here.
2026 Lexus RZ 450e AWD (20 inch wheels - 235/50R20): yearly cost in Idaho
Idaho owners putting 15,000 annual miles on a 2026 Lexus RZ 450e AWD (20 inch wheels - 235/50R20) spend about $598 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,805 saved annually, at this mileage.
Filling up the 2026 Lexus RZ 450e AWD (20 inch wheels - 235/50R20), in dollars
At Idaho's rate, fully covering this 2026 Lexus RZ 450e AWD (20 inch wheels - 235/50R20)'s 257-mile EPA range costs about $10.25 (80.1 kWh) — the energy the EPA test actually used, not the battery's rated size.
Where this ranks
Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Lexus RZ 450e AWD (20 inch wheels - 235/50R20) in Idaho ranks 894 for cost savings versus gas — 1 being the best deal nationally. Separately, the Lexus RZ 450e AWD (20 inch wheels - 235/50R20) ranks 78 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
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.