Charging a 2026 Rivian R1S Dual Large Plus (20in) at home in Illinois

In Illinois, home electricity runs 19.22¢/kWh — put a 2026 Rivian R1S Dual Large Plus (20in)'s EPA-rated 43.1 kWh/100mi against that and 100 miles costs $8.29, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 48.3% cheaper per mile than gasoline in Illinois — charging at home is much cheaper than gas here.

What a year of driving costs

Illinois owners putting 15,000 annual miles on a 2026 Rivian R1S Dual Large Plus (20in) spend about $1,243 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,160 saved annually, at this mileage.

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

At Illinois's rate, fully covering this 2026 Rivian R1S Dual Large Plus (20in)'s 317-mile EPA range costs about $26.27 (136.7 kWh) — the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Dual Large Plus (20in) in Illinois ranks 15,471 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Dual Large Plus (20in) ranks 327 of 400 EV models for raw efficiency, and Illinois ranks 36 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Rivian R1S Dual Large Plus (20in) at home

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 Dual Large Plus (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.