Hawaii became the fifth state to have a clean fuel standard last week when Governor Josh Green signed legislation designed to cut the carbon intensity of the Aloha State’s transportation fuels.

Under the new law, the state will develop regulations to reduce transportation emissions by 10% from 2019 levels by 2035 and no less than 50% by 2045. The program rules must be adopted by Jan. 1, 2028, with implementation beginning Jan. 1, 2029.

According to Clean Fuels Alliance America, the new law will help drive demand and open a new market for biodiesel, renewable diesel and sustainable aviation fuel while spurring economic opportunity and improving the health of its citizens.

“As a native of Hawaii, I am thrilled by the state’s leadership in passing the Clean Fuel Standard,” said Cory-Ann Wind, Director of State Regulatory Affairs for Clean Fuels. “It marks a pivotal moment in Hawaii’s commitment to a sustainable future. Cleaner fuels like biodiesel, renewable diesel and sustainable aviation fuel will play a significant role in helping Hawaii reach its climate goals.”

Hawaii joins California, Oregon, Washington and New Mexico in implementing a clean fuel standard.