How much does it cost to charge a Hyundai Ioniq 5 in Washington?

Washington's 12-month average rate, 14.2¢/kWh, is 21% below the U.S. average of 18.0¢/kWh, which saves $1.11 per 100 miles compared with the national rate.

Rates in Washington are rising quickly: the latest 12-month average is 11.9% higher than in the 12 months before, adding $53 a year to the cost of charging the Hyundai Ioniq 5.

Over the last 24 months Washington was cheapest in winter and most expensive in spring: January 2025 at 11.8¢/kWh and May 2026 at 14.9¢/kWh, which moves the Hyundai Ioniq 5's monthly charging cost between $35 and $44. The latest published month, August 2026, came in at 14.6¢/kWh, 3% above the 12-month average.

Of the 5 states covered so far, Washington is the cheapest place to charge the Hyundai Ioniq 5; California is the most expensive at $9.38 per 100 miles.

Among the 10 EVs on OutletBill, the Hyundai Ioniq 5 is the 4th cheapest to charge per mile in Washington. The cheapest is the Tesla Model 3 at $3.45 per 100 miles; the most expensive is the Rivian R1S at $6.09.

Among the 5 small SUVs on OutletBill, the Hyundai Ioniq 5 ranks 2nd for charging cost in Washington, behind the Tesla Model Y ($3.90 per 100 miles).

At 29.0 kWh per 100 miles, the 2027 Hyundai Ioniq 5 Standard Range uses less energy than 82% of the 171 2027 EV versions EPA has tested.

EPA rates the 2027 Ioniq 5 Standard Range at the same efficiency as the 2026 version, 29.0 kWh per 100 miles, with the same 245-mile range.

Across all 5 trims of the 2027 Ioniq 5, cost per 100 miles in Washington ranges from $4.12 for the Standard Range to $5.08 for the AWD XRT, a difference of $117 a year at 1,016 miles a month.

EPA estimates 6.5 hours to charge the Ioniq 5 Standard Range from empty on a 240-volt Level 2 home charger, short enough to finish overnight. At 1,016 miles a month (about 33 miles a day), a day's driving takes roughly 50 minutes on a Level 2 charger.

Electricity would have to cost more than 57.8¢/kWh, 4.1 times Washington's rate, before the Hyundai Ioniq 5 cost more per mile than the 2026 Hyundai Tucson FWD. Put the other way, gas would have to fall below $1.15 a gallon.

Gas costs use EIA's Washington retail average for regular gasoline ($4.70 a gallon over the same 12 months, 30% above the U.S. average of $3.61) and the 2026 Hyundai Tucson FWD's EPA rating of 28 mpg combined.