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

A 2026 Rivian R1S All-Terrain Tri Max (20in) draws 49.8 kWh per 100 miles per the EPA; at Connecticut's 28.82¢/kWh residential rate that's $14.36 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home costs a little less than gas here: 10.3% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

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 Connecticut costs about $2,154/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $249 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 $47.25 at 28.82¢/kWh in Connecticut.

Where this ranks

This combination ranks 19,901 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; Connecticut alone ranks 45 of 51 states for electricity price.

Next step: home charger installation

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.

Line up a few Connecticut electrician quotes for Level 2 install before you commit either way.

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Connecticut's 28.82¢/kWh rate ranks 45 of 51 states; the state rate guide lays out the full spread.