California Gov. Jerry Brown signed an executive order to boost the supply of zero-emission vehicles (ZEVs) and charging and refueling stations in California to reach a targeted 5 million ZEVs in California by 2030.

The new order was introduced to reduce carbon emissions from the transportation sector, according to a release from the California government. Transportation accounts for 50% of the state’s greenhouse gas emissions and 80% of smog-forming pollutants,

“This executive order aims to curb carbon pollution from cars and trucks and boost the number of zero-emission vehicles driven in California,” said Gov. Brown.

The administration is also proposing a new eight-year, $2.5 billion initiative to continue the state’s clean vehicle rebates and spur more infrastructure investments. This initiative will help bring 250,000 vehicle charging stations and 200 hydrogen fueling stations to California by 2025.

Gov. Brown also detailed the new plan for investing $1.25 billion in cap-and-trade auction proceeds to reduce carbon pollution and improve public health and the environment, particularly in disadvantaged communities, according to a release from the California government.

The executive order builds on past efforts to boost ZEVs in the state, including legislation in October 2017 to accelerate the state’s transition away from fossil-fuel-powered engines; adopting the 2016 Zero-Emission Vehicle Plan and the Advanced Clean Cars program; and hosting a Zero-Emission Vehicle Summit.