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.