2026 Rivian R1T Dual Large (20in): home charging cost in Washington

In Washington, home electricity runs 14.35¢/kWh — put a 2026 Rivian R1T Dual Large (20in)'s EPA-rated 42.9 kWh/100mi against that and 100 miles costs $6.15, versus $16.02 for a gas car averaging 25.5 mpg. Charging at home is much cheaper than gas here: 61.6% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Rivian R1T Dual Large (20in) charged at home in Washington costs about $923/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,480 a year.

What one full charge costs

A 2026 Rivian R1T Dual Large (20in) needs roughly 128.6 kWh to reach its EPA-rated 300-mile range, which runs about $18.46 at 14.35¢/kWh in Washington.

Where this ranks

This combination ranks 10,137 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rivian R1T Dual Large (20in) alone ranks 318 of 400 models for efficiency; Washington alone ranks 15 of 51 states for electricity price.

Getting set up to charge a 2026 Rivian R1T Dual Large (20in) 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.

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

Where these figures come from

The methodology guide names the exact EIA and EPA tables behind this page's numbers. At 14.35¢/kWh, Washington sits in the middle of the national range — the guide to why charging cost varies by state shows where.