Charging a 2027 Rivian R1S Quad (22in UHP) at home in Delaware

At Delaware's residential electricity rate of 17.74¢/kWh, a 2027 Rivian R1S Quad (22in UHP) (rated 47.3 kWh per 100 miles by the EPA) costs $8.4 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. That works out to 47.6% cheaper per mile than gasoline in Delaware — charging at home is much cheaper than gas here.

Annual cost, at 15 thousands miles a year

Delaware owners putting 15,000 annual miles on a 2027 Rivian R1S Quad (22in UHP) spend about $1,260 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,143 saved annually, at this mileage.

Filling up the 2027 Rivian R1S Quad (22in UHP), in dollars

At Delaware's rate, fully covering this 2027 Rivian R1S Quad (22in UHP)'s 338-mile EPA range costs about $28.39 (160 kWh) — the energy the EPA test actually used, not the battery's rated size.

2027 Rivian R1S Quad (22in UHP) in Delaware, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1S Quad (22in UHP) in Delaware ranks 15,641 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Quad (22in UHP) ranks 371 of 400 EV models for raw efficiency, and Delaware ranks 33 of 51 for cheapest residential electricity.

Before you install a home charger in Delaware

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.