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

In Delaware, home electricity runs 17.74¢/kWh — put a 2026 Rivian R1S Dual Large Plus (22in)'s EPA-rated 40.9 kWh/100mi against that and 100 miles costs $7.26, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 54.7% cheaper per mile than gasoline in Delaware — 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 Delaware runs about $1,088 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,315 saved annually, at this mileage.

What one full charge costs

$23.95 — that's what Delaware's 17.74¢/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 Delaware ranks 13,703 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 Delaware ranks 33 of 51 for cheapest residential electricity.

Next step: home charger installation

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 Delaware 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. Curious how Delaware's 17.74¢/kWh compares? The guide to charging cost by state ranks every state side by side.