Clean Shipping Act of 2025

The Clean Shipping Act of 2025 sets new federal standards to reduce greenhouse gas emissions from commercial shipping in U.S. waters. It requires vessels over 400 gross tons operating on covered voyages (between U.S. ports or U.S. ports and foreign ports) to gradually lower the carbon intensity of their fuel, aiming for 100% reduction by 2050 through phased targets (e.g., 30% reduction by 2030, 58% by 2034). Ship owners must report annual fuel carbon intensity and emissions data, while the EPA must develop consistent reporting methods aligned with international standards. The law applies directly to commercial shipping companies operating eligible vessels and includes flexibility for feasibility adjustments if technological or economic challenges arise.