Clean Shipping Act of 2025
- Sponsor
- Rep. Garcia, Robert [D-CA-42]
- Committees
- Energy and Commerce Committee (primary)
- Last action
- Jul 10, 2025
Bottom line
The bill mandates a phased reduction in greenhouse gas emissions from marine shipping, aiming for 100% reduction by 2050 for covered voyages and zero emissions in port by 2035, significantly impacting the shipping industry and environmental regulations.
What it actually does
This bill amends the Clean Air Act to establish new, phased standards for marine vessels. It mandates a reduction in the carbon intensity of fuel used by large vessels on covered voyages, aiming for a 100% reduction by 2050, and requires the elimination of greenhouse gas and air pollutant emissions from vessels in U.S. ports by 2035.
Proponents argue
Supporters argue this legislation is crucial for addressing climate change, improving air quality in port communities, driving innovation in green shipping technologies, and aligning the U.S. with international efforts to decarbonize the maritime sector.
Opponents contend
Critics contend that the aggressive timelines and targets could impose significant financial burdens on the shipping industry, potentially increasing shipping costs, impacting supply chains, and raising concerns about technological feasibility and the competitiveness of U.S. shipping and ports.
The bill is concise and can be read and understood by an informed reader within a short timeframe, allowing for a quick initial assessment.
Section 1
Short Title
This section formally names the act the 'Clean Shipping Act of 2025'. This is a standard legislative practice that provides a convenient and recognizable name for the law, making it easier to reference and discuss.
Supporters argue
This provision is standard legislative practice that provides a clear and concise name for the act, facilitating public and legislative discourse.
Critics contend
No specific opposition is typically raised against short title provisions as they are procedural.
Section 2, adding Section 212A(b) to the Clean Air Act
Marine Vessel Fuel Carbon Intensity Standards
This provision requires the EPA Administrator to establish standards for the carbon intensity of fuel used by vessels of 400 gross tonnage or more on 'covered voyages' (between U.S. ports or between a U.S. and foreign port). These standards mandate a 30% reduction in carbon intensity by 2030-2034, increasing incrementally to a 100% reduction by 2050 and thereafter.
Section 2, adding Section 212A(b)(3) to the Clean Air Act
Feasibility Adjustments for Carbon Intensity Standards
This clause allows the EPA Administrator to modify the carbon intensity reduction standards if they are determined not to be technologically or economically feasible by the applicable deadline. In such cases, the Administrator must promulgate standards that achieve the maximum feasible reduction, taking into account net greenhouse gas reductions and potential adverse impacts on public health and the environment.
Section 2, adding Section 212A(b)(4) to the Clean Air Act
International Standard Alignment
This provision authorizes the EPA Administrator to adopt standards mandated by the International Maritime Organization (IMO) for reducing fuel carbon intensity if those IMO standards are equal to or more stringent than the domestic standards set by this Act for a given calendar year.
Section 2, adding Section 212A(c) to the Clean Air Act
Fuel Carbon Intensity Monitoring and Reporting
This section mandates the EPA Administrator to develop acceptable methods for monitoring and reporting compliance, aiming for consistency with European Union and International Maritime Organization schemes. Vessel owners/operators must annually report the carbon intensity of fuel used, the amount of fuel used, and total greenhouse gas emissions for all covered voyages. The EPA, in consultation with DOT and Coast Guard, must then publish an annual, publicly accessible report compiling this data.
Section 3, amending Section 213 of the Clean Air Act
In-Port Zero Emission Standards
This section mandates the EPA Administrator to promulgate standards by January 1, 2029, to eliminate greenhouse gas and air pollutant emissions from vessels at anchorage or at berth in the contiguous zone of the United States by January 1, 2035. Similar to the fuel standard, it includes a feasibility clause allowing adjustments if the standards are not technologically or economically feasible.
This provision defines 'covered voyage' to include any voyage of a vessel for commercial purposes that is either between any ports of call under U.S. jurisdiction or between a U.S. port and a foreign port.
Section 2, adding Section 212A(a)(4) to the Clean Air Act
Why it matters:It is standard legislative practice to define key terms at the beginning of a section to establish the scope of the subsequent regulations.
Case for: Supporters argue that a clear and comprehensive definition of 'covered voyage' is essential to delineate the precise scope of the carbon intensity standards, ensuring broad coverage of U.S.-related shipping emissions and preventing loopholes.
Case against: Critics might argue that such a broad definition could be seen as overreaching, potentially impacting international trade routes more extensively than necessary or creating conflicts with foreign regulations, particularly for vessels with minimal U.S. port calls.
Estimated impact: This definition fundamentally determines the entire scope of the marine greenhouse gas fuel standards, affecting a vast number of commercial voyages to, from, and within the United States.
This provision exempts any vessel that is on covered voyages for 30 days or fewer during a calendar year from the carbon intensity standards promulgated under this subsection.
Section 2, adding Section 212A(b)(5) to the Clean Air Act
Why it matters:This is a common legislative technique to provide a carve-out for entities that have minimal engagement with the regulated activity, often to reduce administrative burden on both the regulator and small-scale operators.
Case for: Proponents argue this exemption reduces the regulatory burden on smaller, less frequent operators or those primarily engaged in non-covered voyages, allowing enforcement efforts to focus on major emitters while minimizing impact on incidental U.S. port calls.
Case against: Critics might argue that this exemption could create a loophole for some vessels, potentially reducing the overall effectiveness of the standards if a significant number of vessels fall under this category, even if their individual impact is small.
Estimated impact: This exemption reduces the number of regulated vessels, potentially by a small but non-negligible amount, thereby focusing regulatory effort on the most significant contributors to emissions.
This provision allows the EPA Administrator to permit the carbon intensity of fuels used by vessels under common ownership or control to be averaged for the purposes of determining compliance with any established standard.
Section 2, adding Section 212A(b)(6) to the Clean Air Act
Why it matters:It is a technical flexibility mechanism designed to ease compliance for large entities with multiple regulated assets, rather than a core policy directive.
Case for: Supporters argue this provision provides crucial flexibility for large shipping companies, allowing them to meet overall fleet targets by strategically investing in cleaner vessels or fuels where most efficient, rather than requiring every single vessel to meet the exact standard individually.
Case against: Critics might contend that this averaging mechanism could allow some individual vessels within a fleet to continue using higher-carbon fuels if offset by others, potentially delaying direct improvements for specific routes or port communities that experience their emissions.
Estimated impact: This flexibility mechanism facilitates compliance for multi-vessel operators, potentially influencing their investment strategies in fleet modernization and fuel choices across their operations.