Colorado approved a zero-emission vehicle standard on Aug. 16 aimed at accelerating the availability of electric vehicles, the state's Air Quality Control Commission said.
Under the new regulation, electric vehicles must account for at least 5% of an automaker's lineup in Colorado by 2023 and at least 6% by 2025, according to the commission, which passed the proposal agreed upon by state agencies and auto trade groups.
The regulation will help put 1 million electric vehicles on Colorado roads by 2030, Will Toor, executive director of the Colorado Energy Office, said in a news release. The move is "critical to meeting clean air standards and Colorado's greenhouse gas reduction goal," Toor said.
The regulation comes amid a push by Colorado Gov. Jared Polis to reduce vehicle emissions and increase the variety of electric cars in the state.
"In one of my first executive orders as governor, I asked for the Department of Public Health and Environment to increase the choices Coloradans have when it comes to purchasing electric cars by increasing the number of models available in our state, and we got it done within a few short months," Colorado Gov. Jared Polis said in a statement.
The zero-vehicle emission program was first adopted by California, which is battling President Donald Trump's proposal that would prohibit the state from enforcing its own vehicle emission rules.