2027 Rivian R1S Performance (20in), IL Charging Cost
Illinois home charging cost for the 2027 Rivian R1S Performance (20in)
In Illinois, home electricity runs 19.22¢/kWh, put a 2027 Rivian R1S Performance (20in)'s EPA-rated 47 kWh/100mi against that and 100 miles costs $9.03, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 43.6% less than gas per mile, here specifically.
2027 Rivian R1S Performance (20in): yearly cost in Illinois
At fueleconomy.gov's default of 15,000 annual miles, the 2027 Rivian R1S Performance (20in) costs roughly $1,355 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 $1,048 a year.
Filling up the 2027 Rivian R1S Performance (20in), in dollars
Covering the 2027 Rivian R1S Performance (20in)'s EPA-rated 348-mile range takes about 163.5 kWh, which costs about $31.43 at Illinois's residential rate, figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.
2027 Rivian R1S Performance (20in) in Illinois, ranked
This combination ranks 16,426 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Performance (20in) alone ranks 369 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.
Ask a licensed Illinois electrician to quote the install before this math becomes a real decision.
Where these figures come from
Every figure on this page traces to a named EIA or EPA dataset, see the methodology guide. At 19.22¢/kWh, Illinois sits in the middle of the national range, the guide to why charging cost varies by state shows where.