Charging a 2026 Rivian R1S All-Terrain Performance Dual Large (20in) at home in Delaware

At Delaware's residential electricity rate of 17.74¢/kWh, a 2026 Rivian R1S All-Terrain Performance Dual Large (20in) (rated 44.4 kWh per 100 miles by the EPA) costs $7.87 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 50.9% 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 All-Terrain Performance Dual Large (20in) spend about $1,180 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,222 saved annually, at this mileage.

What one full charge costs

At Delaware's rate, fully covering this 2026 Rivian R1S All-Terrain Performance Dual Large (20in)'s 289-mile EPA range costs about $22.74 (128.2 kWh) — the energy the EPA test actually used, not the battery's rated size.

2026 Rivian R1S All-Terrain Performance Dual Large (20in) in Delaware, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S All-Terrain Performance Dual Large (20in) in Delaware ranks 14,844 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S All-Terrain Performance Dual Large (20in) ranks 345 of 400 EV models for raw efficiency, and Delaware ranks 33 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Rivian R1S All-Terrain Performance Dual Large (20in) at home

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.