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

At Delaware's residential electricity rate of 17.74¢/kWh, a 2026 Rivian R1S Performance Dual Large (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 2026 Rivian R1S Performance Dual Large (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.

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

At Delaware's rate, fully covering this 2026 Rivian R1S Performance Dual Large (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.

2026 Rivian R1S Performance Dual Large (22in) in Delaware, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Performance Dual Large (22in) in Delaware ranks 13,056 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Performance Dual Large (22in) ranks 251 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.

Line up a few Delaware electrician quotes for Level 2 install before you commit either way.

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.