2027 Rivian R1T Performance (22in): home charging cost in Washington
In Washington, home electricity runs 14.35¢/kWh — put a 2027 Rivian R1T Performance (22in)'s EPA-rated 44.6 kWh/100mi against that and 100 miles costs $6.4, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 60.1% less than gas per mile, here specifically.
2027 Rivian R1T Performance (22in): yearly cost in Washington
Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2027 Rivian R1T Performance (22in) charged at home in Washington costs about $959/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,444 a year.
What one full charge costs
A 2027 Rivian R1T Performance (22in) needs roughly 165.4 kWh to reach its EPA-rated 371-mile range, which runs about $23.73 at 14.35¢/kWh in Washington.
How this compares nationally
This combination ranks 11,097 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1T Performance (22in) alone ranks 355 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.
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. Curious how Washington's 14.35¢/kWh compares? The guide to charging cost by state ranks every state side by side.