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

At Washington's residential electricity rate of 14.35¢/kWh, a 2026 Rivian R1S Performance Dual Large Plus (22in) (rated 40.9 kWh per 100 miles by the EPA) costs $5.87 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 63.4% cheaper per mile than gasoline in Washington — charging at home is much cheaper than gas here.

2026 Rivian R1S Performance Dual Large Plus (22in): yearly cost in Washington

Washington owners putting 15,000 annual miles on a 2026 Rivian R1S Performance Dual Large Plus (22in) spend about $880 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,523 saved annually, at this mileage.

Cost of a full charge

At Washington's rate, fully covering this 2026 Rivian R1S Performance Dual Large Plus (22in)'s 330-mile EPA range costs about $19.37 (135 kWh) — the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Performance Dual Large Plus (22in) in Washington ranks 8,792 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Performance Dual Large Plus (22in) ranks 279 of 400 EV models for raw efficiency, and Washington ranks 15 of 51 for cheapest residential electricity.

Getting set up to charge a 2026 Rivian R1S Performance Dual Large Plus (22in) 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.

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

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1S Performance Dual Large Plus (22in)'s cost in Washington. Curious how Washington's 14.35¢/kWh compares? The guide to charging cost by state ranks every state side by side.