What it costs to charge a 2026 Rivian R1S All-Terrain Dual Large (20in) in Washington

In Washington, home electricity runs 14.35¢/kWh — put a 2026 Rivian R1S All-Terrain Dual Large (20in)'s EPA-rated 44.4 kWh/100mi against that and 100 miles costs $6.37, versus $16.02 for a gas car averaging 25.5 mpg. That works out to 60.3% cheaper per mile than gasoline in Washington — charging at home is much cheaper than gas here.

2026 Rivian R1S All-Terrain Dual Large (20in): yearly cost in Washington

Home charging this 2026 Rivian R1S All-Terrain Dual Large (20in) in Washington runs about $955 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,448 saved annually, at this mileage.

Filling up the 2026 Rivian R1S All-Terrain Dual Large (20in), in dollars

$18.4 — that's what Washington's 14.35¢/kWh rate puts on the 128.2 kWh a 2026 Rivian R1S All-Terrain Dual Large (20in) needs for its full 289-mile EPA range.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rivian R1S All-Terrain Dual Large (20in) in Washington ranks 10,933 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rivian R1S All-Terrain Dual Large (20in) ranks 344 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.

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

More on how this number was built

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1S All-Terrain Dual Large (20in)'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.