2027 Rivian R1S Performance (22in): home charging cost in Illinois

In Illinois, home electricity runs 19.22¢/kWh — put a 2027 Rivian R1S Performance (22in)'s EPA-rated 44.6 kWh/100mi against that and 100 miles costs $8.57, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 46.5% less than gas per mile, here specifically.

2027 Rivian R1S Performance (22in): yearly cost in Illinois

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2027 Rivian R1S Performance (22in) charged at home in Illinois costs about $1,285/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,118 a year.

Cost of a full charge

A 2027 Rivian R1S Performance (22in) needs roughly 165.4 kWh to reach its EPA-rated 371-mile range, which runs about $31.78 at 19.22¢/kWh in Illinois.

Where this ranks

This combination ranks 15,863 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Performance (22in) alone ranks 354 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.

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. Curious how Illinois's 19.22¢/kWh compares? The guide to charging cost by state ranks every state side by side.