US proposes IMO rule changes to support ethanol and biofuel use in shipping

On 2026-04-16, the United States submitted a proposal to the International Maritime Organization’s Intersessional Working Group on GHG Emissions from Ships in London. The U.S. called for changes to IMO biofuel lifecycle rules, urging a regional approach to indirect land use change risk assessment for crop-based marine fuels. The proposal was intended to influence IMO rulemaking on sustainable shipping fuels and biofuel eligibility.