What it costs to charge a 2026 Rivian R1S Dual Max (20in) in Connecticut

A 2026 Rivian R1S Dual Max (20in) draws 42 kWh per 100 miles per the EPA; at Connecticut's 28.82¢/kWh residential rate that's $12.1 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 24.5% cheaper per mile than gasoline in Connecticut — charging at home is cheaper than gas here.

What a year of driving costs

Home charging this 2026 Rivian R1S Dual Max (20in) in Connecticut runs about $1,814 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $588 saved annually, at this mileage.

What one full charge costs

$45.97 — that's what Connecticut's 28.82¢/kWh rate puts on the 159.5 kWh a 2026 Rivian R1S Dual Max (20in) needs for its full 380-mile EPA range.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Dual Max (20in) in Connecticut ranks 19,074 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Dual Max (20in) ranks 298 of 400 EV models for raw efficiency, and Connecticut ranks 45 of 51 for cheapest residential electricity.

Before you install a home charger in Connecticut

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.

Ask a licensed Connecticut electrician to quote the install before this math becomes a real decision.

More on how this number was built

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.