2026 Lexus RZ 450e AWD (18 inch wheels): home charging cost in Montana

At Montana's residential electricity rate of 13.77¢/kWh, a 2026 Lexus RZ 450e AWD (18 inch wheels) (rated 30.5 kWh per 100 miles by the EPA) costs $4.2 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 costs a fraction of what gas would here: 73.8% less than gas per mile, here specifically.

What a year of driving costs

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Lexus RZ 450e AWD (18 inch wheels) charged at home in Montana costs about $631/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,772 a year.

Cost of a full charge

A 2026 Lexus RZ 450e AWD (18 inch wheels) needs roughly 80.6 kWh to reach its EPA-rated 264-mile range, which runs about $11.1 at 13.77¢/kWh in Montana.

How this compares nationally

This combination ranks 1,464 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Lexus RZ 450e AWD (18 inch wheels) alone ranks 66 of 400 models for efficiency; Montana alone ranks 10 of 51 states for electricity price.

Getting set up to charge a 2026 Lexus RZ 450e AWD (18 inch wheels) 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.

Line up a few Montana electrician quotes for Level 2 install before you commit either way.

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2026 Lexus RZ 450e AWD (18 inch wheels)'s cost in Montana. Montana's 13.77¢/kWh rate ranks 10 of 51 states; the state rate guide lays out the full spread.