Sponsor
Alejandro Padilla
Senator · D-CA
Senator · D-CA
The bill offers substantial climate and local air‑quality benefits by pushing U.S. shipping toward zero‑emission operations, but those gains come with sizable compliance and infrastructure costs, transitional workforce risks, and the possibility of weaker outcomes if feasibility limits lead EPA to set less‑than‑elimination standards.
Owners/operators of covered vessels and ports nationwide would be required to cut lifecycle greenhouse gas emissions (up to 100% by 2050) and eliminate in‑port vessel GHGs by 2035, substantially reducing the shipping sector's climate footprint.
Communities near ports and anchorages would see reduced air pollution (particulates, NOx) and improved public health outcomes as in‑port emissions are eliminated.
Standards would stimulate demand for zero‑emission vessel technologies and shore power infrastructure, creating new markets and jobs for manufacturers, installers, and clean‑energy providers.
Ship owners/operators and ports would face substantial compliance costs (new fuels, technology, retrofits) that are likely to raise freight costs and consumer prices.
Many owners may need to retrofit or replace vessels or secure scarce/expensive low‑carbon fuels, creating operational and supply‑chain challenges for the maritime sector.
Rapid deployment of shore power and associated grid upgrades could impose large upfront costs on local governments and taxpayers to build necessary infrastructure.
Based on analysis of 3 sections of legislative text.
Directs EPA to set phased carbon-intensity standards for large vessels on U.S. voyages and to eliminate at-berth/anchorage emissions in the U.S. contiguous zone by 2035 (with feasibility fallback).
Official title: Amend the Clean Air Act to provide for the establishment of standards to limit the carbon intensity of the fuel used by certain vessels, and for other purposes.
Introduced July 10, 2025 by Alejandro Padilla · Last progress July 10, 2025
Requires the EPA to create a Marine Greenhouse Gas Fuel Standard for large commercial vessels on voyages touching U.S. ports and to set emissions-elimination standards for vessels at berth or anchorage in the U.S. contiguous zone. The bill phases in steep percentage reductions in vessel fuel carbon intensity relative to a 2027 baseline (reaching 100% by 2050 unless infeasible), mandates annual vessel-level reporting, allows averaging/banking among commonly owned vessels, aligns monitoring/reporting with international rules where possible, and directs EPA to promulgate near‑term rules to eliminate greenhouse gas and criteria-pollutant emissions from vessels at berth/anchorage by 2035 (with fallback feasibility-based standards).