Charging a 2026 Rivian R1S Dual Max (22in) at home in Delaware

A 2026 Rivian R1S Dual Max (22in) draws 39.9 kWh per 100 miles per the EPA; at Delaware's 17.74¢/kWh residential rate that's $7.09 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. That works out to 55.8% cheaper per mile than gasoline in Delaware — charging at home is much cheaper than gas here.

What a year of driving costs

Delaware owners putting 15,000 annual miles on a 2026 Rivian R1S Dual Max (22in) spend about $1,063 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,340 saved annually, at this mileage.

Filling up the 2026 Rivian R1S Dual Max (22in), in dollars

At Delaware's rate, fully covering this 2026 Rivian R1S Dual Max (22in)'s 410-mile EPA range costs about $29.05 (163.7 kWh) — the energy the EPA test actually used, not the battery's rated size.

2026 Rivian R1S Dual Max (22in) in Delaware, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Dual Max (22in) in Delaware ranks 13,194 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Dual Max (22in) ranks 265 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

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. At 17.74¢/kWh, Delaware sits in the middle of the national range — the guide to why charging cost varies by state shows where.