What it costs to charge a 2026 Rivian R1S Dual Large Plus (22in) in Illinois

A 2026 Rivian R1S Dual Large Plus (22in) draws 40.9 kWh per 100 miles per the EPA; at Illinois's 19.22¢/kWh residential rate that's $7.86 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 50.9% cheaper per mile than gasoline in Illinois — charging at home is much cheaper than gas here.

What a year of driving costs

Home charging this 2026 Rivian R1S Dual Large Plus (22in) in Illinois runs about $1,179 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,224 saved annually, at this mileage.

Cost of a full charge

$25.94 — that's what Illinois's 19.22¢/kWh rate puts on the 135 kWh a 2026 Rivian R1S Dual Large Plus (22in) needs for its full 330-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Dual Large Plus (22in) in Illinois ranks 14,849 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Dual Large Plus (22in) ranks 278 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 (22in) 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

The methodology guide names the exact EIA and EPA tables behind this page's numbers. At 19.22¢/kWh, Illinois sits in the middle of the national range — the guide to why charging cost varies by state shows where.