Washington home charging cost for the 2027 Rivian R1S Quad (22in)

In Washington, home electricity runs 14.35¢/kWh — put a 2027 Rivian R1S Quad (22in)'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. Charging at home is much cheaper than gas here: 60.3% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

At fueleconomy.gov's default of 15,000 annual miles, the 2027 Rivian R1S Quad (22in) costs roughly $955 a year to charge at home in Washington, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,448 a year.

Cost of a full charge

Covering the 2027 Rivian R1S Quad (22in)'s EPA-rated 374-mile range takes about 166 kWh, which costs about $23.81 at Washington's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

How this compares nationally

This combination ranks 10,929 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1S Quad (22in) alone ranks 348 of 400 models for efficiency; Washington alone ranks 15 of 51 states for electricity price.

Getting set up to charge a 2027 Rivian R1S Quad (22in) at home

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.

Ask a licensed Washington electrician to quote the install before this math becomes a real decision.

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Washington's 14.35¢/kWh rate ranks 15 of 51 states; the state rate guide lays out the full spread.