Delaware home charging cost for the 2027 Rivian R1S Performance (20in)

At Delaware's residential electricity rate of 17.74¢/kWh, a 2027 Rivian R1S Performance (20in) (rated 47 kWh per 100 miles by the EPA) costs $8.34 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. Charging at home is much cheaper than gas here: 48% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

At fueleconomy.gov's default of 15,000 annual miles, the 2027 Rivian R1S Performance (20in) costs roughly $1,250 a year to charge at home in Delaware, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,153 a year.

Cost of a full charge

Covering the 2027 Rivian R1S Performance (20in)'s EPA-rated 348-mile range takes about 163.5 kWh, which costs about $29.01 at Delaware's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

How this compares nationally

This combination ranks 15,552 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Performance (20in) alone ranks 369 of 400 models for efficiency; Delaware alone ranks 33 of 51 states for electricity price.

Next step: home charger installation

The numbers above assume Level 2 home charging is already in place — the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.

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

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Curious how Delaware's 17.74¢/kWh compares? The guide to charging cost by state ranks every state side by side.