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

At Delaware's residential electricity rate of 17.74¢/kWh, a 2027 Rivian R1S Premium (22in) (rated 39.5 kWh per 100 miles by the EPA) costs $7 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 56.3% 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 2027 Rivian R1S Premium (22in) spend about $1,050 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,353 saved annually, at this mileage.

What one full charge costs

At Delaware's rate, fully covering this 2027 Rivian R1S Premium (22in)'s 329-mile EPA range costs about $23.04 (129.9 kWh) — the energy the EPA test actually used, not the battery's rated size.

2027 Rivian R1S Premium (22in) in Delaware, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2027 Rivian R1S Premium (22in) in Delaware ranks 13,054 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Premium (22in) ranks 249 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.

Get quotes from local electricians for Level 2 charger installation in Delaware before deciding.

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2027 Rivian R1S Premium (22in)'s cost in Delaware. At 17.74¢/kWh, Delaware sits in the middle of the national range — the guide to why charging cost varies by state shows where.