Illinois home charging cost for the 2027 Rivian R1T Quad (22in)
A 2027 Rivian R1T Quad (22in) draws 44.4 kWh per 100 miles per the EPA; at Illinois's 19.22¢/kWh residential rate that's $8.53 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: 46.8% less than gas per mile, here specifically.
What a year of driving costs
At fueleconomy.gov's default of 15,000 annual miles, the 2027 Rivian R1T Quad (22in) costs roughly $1,279 a year to charge at home in Illinois, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,124 a year.
Cost of a full charge
Covering the 2027 Rivian R1T Quad (22in)'s EPA-rated 374-mile range takes about 166 kWh, which costs about $31.9 at Illinois's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.
How this compares nationally
This combination ranks 15,812 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1T Quad (22in) alone ranks 349 of 400 models for efficiency; Illinois alone ranks 36 of 51 states for electricity price.
Next step: home charger installation
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. Curious how Illinois's 19.22¢/kWh compares? The guide to charging cost by state ranks every state side by side.