2027 Rivian R1T Premium (20in): home charging cost in Illinois

A 2027 Rivian R1T Premium (20in) draws 42.9 kWh per 100 miles per the EPA; at Illinois's 19.22¢/kWh residential rate that's $8.24 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home is much cheaper than gas here: 48.6% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2027 Rivian R1T Premium (20in) charged at home in Illinois costs about $1,236/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,167 a year.

What one full charge costs

A 2027 Rivian R1T Premium (20in) needs roughly 128.6 kWh to reach its EPA-rated 300-mile range, which runs about $24.72 at 19.22¢/kWh in Illinois.

Where this ranks

This combination ranks 15,393 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1T Premium (20in) alone ranks 315 of 400 models for efficiency; Illinois alone ranks 36 of 51 states for electricity price.

Before you install a home charger in Illinois

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 Illinois electrician quotes for Level 2 install before you commit either way.

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Illinois's 19.22¢/kWh rate ranks 36 of 51 states; the state rate guide lays out the full spread.