Charging a 2026 Rivian R1S Dual Standard (22in) at home in Washington

In Washington, home electricity runs 14.35¢/kWh — put a 2026 Rivian R1S Dual Standard (22in)'s EPA-rated 39.9 kWh/100mi against that and 100 miles costs $5.72, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 64.3% cheaper per mile than gasoline in Washington — charging at home is much cheaper than gas here.

2026 Rivian R1S Dual Standard (22in): yearly cost in Washington

Washington owners putting 15,000 annual miles on a 2026 Rivian R1S Dual Standard (22in) spend about $859 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,544 saved annually, at this mileage.

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

At Washington's rate, fully covering this 2026 Rivian R1S Dual Standard (22in)'s 270-mile EPA range costs about $15.45 (107.7 kWh) — the energy the EPA test actually used, not the battery's rated size.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S Dual Standard (22in) in Washington ranks 8,109 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S Dual Standard (22in) ranks 262 of 400 EV models for raw efficiency, and Washington ranks 15 of 51 for cheapest residential electricity.

Before you install a home charger in Washington

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 Dual Standard (22in)'s cost in Washington. Washington's 14.35¢/kWh rate ranks 15 of 51 states; the state rate guide lays out the full spread.