Washington’s King County Council passed a law Tuesday requiring the installation of charging stations and creation of set-asides for parking of electric vehicles at multi-unit dwellings in its unincorporated areas.

Most of King County’s 2.3 million people live in Seattle and its suburbs. The unincorporated areas are east of Seattle, creeping up into the Cascade Mountains.

The new law requires that new or substantially remodeled apartment buildings make 10% of their parking spaces capable of charging electric vehicles. It also requires that 25% of those buildings’ parking spaces have infrastructure in place to accommodate chargers in the future.

“As we continue to face the growing impact of climate change on our day-to-day lives, it’s vital that we think creatively and proactively about how to make eco-friendly choices accessible, such as electric vehicles,” Councilmember Jeanne Kohl-Welles said in a statement.

“The pace of transportation electrification is growing exponentially,” Councilmember Rod Dembowski said.

“With more charging stations, it will be much easier to own an electric vehicle in King County,” said Councilmember Reagan Dunn.