Hawaii Governor Josh Green signed a clean fuel law that aims to cut transportation emissions 50% below 2019 levels by 2045. The law uses a credit and deficit system for fuels based on carbon intensity, with alternative fuels entering the program in 2028 and gasoline and diesel in 2029. The Hawaii Department of Transportation will set lifecycle benchmarks to phase in reductions. Transportation is a major source of emissions in the state. The law targets a 10% reduction by 2035 and a 50% cut by 2045. Supporters say it could boost local renewable fuel production and reduce waste by using waste-derived energy sources. The policy is modeled after similar programs in other states and is designed to reward the most effective low-carbon fuel options.
