What it costs to charge a 2026 Rivian R1S Performance Dual Large (20in) in Illinois

In Illinois, home electricity runs 19.22¢/kWh — put a 2026 Rivian R1S Performance Dual Large (20in)'s EPA-rated 42.9 kWh/100mi against that and 100 miles costs $8.24, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 48.6% cheaper per mile than gasoline in Illinois — charging at home is much cheaper than gas here.

2026 Rivian R1S Performance Dual Large (20in): yearly cost in Illinois

Home charging this 2026 Rivian R1S Performance Dual Large (20in) in Illinois runs about $1,236 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,167 saved annually, at this mileage.

Filling up the 2026 Rivian R1S Performance Dual Large (20in), in dollars

$24.72 — that's what Illinois's 19.22¢/kWh rate puts on the 128.6 kWh a 2026 Rivian R1S Performance Dual Large (20in) needs for its full 300-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Performance Dual Large (20in) in Illinois ranks 15,396 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Performance Dual Large (20in) ranks 317 of 400 EV models for raw efficiency, and Illinois ranks 36 of 51 for cheapest residential electricity.

Before you install a home charger in Illinois

Everything above is the per-mile and per-year cost once a home charger exists — getting one installed is a separate electrical job whose price depends on your panel and wiring, not the state average used here.

Get quotes from local electricians for Level 2 charger installation in Illinois before deciding.

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1S Performance Dual Large (20in)'s cost in Illinois. Illinois's 19.22¢/kWh rate ranks 36 of 51 states; the state rate guide lays out the full spread.