EV Charging in Washington: What the Numbers Mean
Washington's residential electricity rate is 10.2¢/kWh — 5.9¢ below the national average of 16.1¢/kWh, which works in EV owners' favor. At that rate, a typical EV (3.5 mi/kWh) costs $350/year to charge at home for 12,000 miles.
Compared to a 30 MPG gas car at $4.05/gal ($1620/year for the same miles), EV home charging saves $1270/year — $6,350 over 5 years, before incentives.
Home Charging vs Public Charging in Washington
The biggest driver of EV cost is where you charge. Home charging at 10.2¢/kWh is always the cheapest option. Public Level 2 stations average around 25.5¢/kWh — 2.5x more expensive. DC fast chargers run about 33.6¢/kWh. Tesla Superchargers in Washington are estimated at 23.0¢–28.5¢/kWh depending on membership.
Most EV owners do 80%+ of their charging at home overnight. If you don't have home charging access, the economics shift significantly — charging entirely at public DC fast chargers would cost $1152/year in Washington, narrowing the gap with gas considerably.
Washington EV Rebate: $2,500
Washington Clean Alternative Fuel Vehicle (CAFV) Program: $2,500 rebate for new BEV. Sales tax exemption applies to BEVs under $45K MSRP. EVs in Washington also qualify for HOV lane access.