SB1120 would direct the Hawaii Department of Transportation to study and then establish a clean fuel standard for transportation fuels. The bill reflects a finding that transportation is the state’s largest source of lifecycle greenhouse gas emissions and that a market-based, technology-neutral clean fuel program could help reduce emissions while supporting public health, economic development, and new clean-fuel jobs. It also frames the policy as a way to create markets for lower-value materials and waste streams, such as used cooking oil, agricultural residues, forestry residuals, and renewable electricity.
Under the bill, DOT must complete a feasibility study on implementing a clean fuel standard, including fiscal impacts, and report recommendations to the Legislature by early 2027. By January 1, 2028, DOT must adopt rules for a clean fuel standard that phases in carbon-intensity reductions, with targets of at least 10 percent below 2019 levels by 2035 and 50 percent below 2019 levels by 2045. The rules would use lifecycle greenhouse gas accounting, credit-and-deficit trading, verification procedures, exemptions for certain sectors, and periodic updates to the emissions model. The bill also contemplates possible future linkage with programs in California, Oregon, and Washington.
The bill’s impact on state law would be to add a new regulatory mandate for DOT under chapter 91, Hawaii Revised Statutes, requiring the agency to design and administer a clean fuel program for gasoline, diesel, and alternative fuels. It would create a framework for carbon-intensity standards, credit generation, banking and trading, compliance exemptions, and optional participation by certain end uses and fuel users. Although the bill is effective in stages beginning in 2025 and 2027 for study and rulemaking, the overall act is set to take effect on July 1, 3000, which appears to function as a placeholder effective date.
The general sentiment reflected in the voting history is favorable. The bill passed both the Senate Agriculture and Environment Committee and the Senate Transportation and Culture and the Arts Committee by 4-1 votes, and later passed the Senate Ways and Means Committee unanimously, 13-0. That pattern suggests broad support for the concept of a clean fuel standard, at least at the committee level, with the bill advancing through amendments rather than being rejected.
The main points of contention appear to be around implementation details rather than the overall goal. The lone dissenting vote in the first two committees suggests some concern about the costs, administrative burden, or policy design of a clean fuel standard. The bill itself also leaves several items to later rulemaking, including cost-containment mechanisms, deficit allocation percentages for infrastructure support, and how to handle exempt sectors and alternative fuels, indicating that the precise structure of the program remained open for further debate.
The bill would require the Department of Transportation to conduct a feasibility study and then adopt rules establishing a clean fuel standard for transportation fuels, including gasoline, diesel, and a broad range of alternative fuels. It would create a new regulatory framework for lifecycle carbon-intensity measurement, credit and deficit generation, trading and banking, exemptions, and compliance verification, while also allowing future linkage to similar programs in other states. The bill would therefore expand DOT’s authority and responsibilities under Hawaii law and could affect fuel suppliers, alternative fuel producers, utilities, transportation operators, and sectors eligible for exemptions or opt-in credit generation.
The committee vote history indicates generally positive sentiment toward the bill. It advanced with amendments from two Senate committees by 4-1 votes and then passed Senate Ways and Means unanimously, suggesting that lawmakers broadly supported the concept of a clean fuel standard and the study/rulemaking approach. The presence of a single dissenting vote in the earlier committees suggests some reservations, but the overall trajectory was favorable.
The likely areas of disagreement are the bill’s regulatory and economic details rather than its environmental objective. Potential concerns include compliance costs, the fiscal impact of implementing a clean fuel standard, the administrative complexity of lifecycle emissions accounting, and how credits, deficits, exemptions, and infrastructure-support mechanisms would be structured. The bill also leaves unresolved several key parameters for later rulemaking, such as percentage caps for deficit allocation and the treatment of certain exempt or high-market-share fuels, which may have been the subject of concern among the dissenting committee member(s).