2026 Rivian R1S Dual Max (22in): home charging cost in Washington

In Washington, home electricity runs 14.35¢/kWh — put a 2026 Rivian R1S Dual Max (22in)'s EPA-rated 39.9 kWh/100mi against that and 100 miles costs $5.73, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 64.2% less than gas per mile, here specifically.

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

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Rivian R1S Dual Max (22in) charged at home in Washington costs about $860/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,543 a year.

Cost of a full charge

A 2026 Rivian R1S Dual Max (22in) needs roughly 163.7 kWh to reach its EPA-rated 410-mile range, which runs about $23.5 at 14.35¢/kWh in Washington.

2026 Rivian R1S Dual Max (22in) in Washington, ranked

This combination ranks 8,185 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Dual Max (22in) alone ranks 265 of 400 models for efficiency; Washington alone ranks 15 of 51 states for electricity price.

Before you install a home charger in Washington

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.

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

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rivian R1S Dual Max (22in)'s cost in Washington. At 14.35¢/kWh, Washington sits in the middle of the national range — the guide to why charging cost varies by state shows where.