2026 Rivian R1S All-Terrain Tri Max (20in): home charging cost in Illinois

In Illinois, home electricity runs 19.22¢/kWh — put a 2026 Rivian R1S All-Terrain Tri Max (20in)'s EPA-rated 49.8 kWh/100mi against that and 100 miles costs $9.58, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 40.2% less than gas per mile, here specifically.

2026 Rivian R1S All-Terrain Tri Max (20in): yearly cost in Illinois

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Rivian R1S All-Terrain Tri Max (20in) charged at home in Illinois costs about $1,437/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $966 a year.

Cost of a full charge

A 2026 Rivian R1S All-Terrain Tri Max (20in) needs roughly 164 kWh to reach its EPA-rated 329-mile range, which runs about $31.51 at 19.22¢/kWh in Illinois.

2026 Rivian R1S All-Terrain Tri Max (20in) in Illinois, ranked

This combination ranks 17,045 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S All-Terrain Tri Max (20in) alone ranks 388 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

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Illinois's 19.22¢/kWh rate ranks 36 of 51 states; the state rate guide lays out the full spread.