IMO greenhouse gas strategy
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| IMO greenhouse gas strategy | |
|---|---|
| Name | International Maritime Organization greenhouse gas strategy |
| Caption | Emissions reduction measures for international shipping |
| Formation | 2018 (initial) |
| Type | Intergovernmental environmental policy |
| Headquarters | London |
| Leader title | Secretary-General |
| Leader name | Kitack Lim |
IMO greenhouse gas strategy
The International Maritime Organization (IMO) greenhouse gas strategy is the UN-affiliated International Maritime Organization's framework for reducing carbon dioxide and other greenhouse gas emissions from international shipping, aligning maritime policy with instruments such as the Paris Agreement, the United Nations Framework Convention on Climate Change, and targets discussed at the United Nations General Assembly. It sets timelines, technical and operational measures, reporting requirements and market instruments developed through bodies including the Marine Environment Protection Committee and the Sub-Committee on Ship Design and Construction. The strategy connects to work by actors such as Lloyd’s Register, International Chamber of Shipping, Intergovernmental Panel on Climate Change, and regional stakeholders like the European Union and Clean Shipping Coalition.
Background and policy context
The strategy emerged against a backdrop of scientific assessments by the Intergovernmental Panel on Climate Change and legal frameworks including the United Nations Convention on the Law of the Sea. Debates reflected positions from the International Chamber of Shipping, BIMCO, International Transport Workers' Federation, and flag States such as Panama, Liberia, and Marshall Islands. Economic considerations referenced analyses from Organisation for Economic Co-operation and Development and International Energy Agency while civil society inputs came from Greenpeace, WWF, and the Carbon War Room. Technical inputs were provided by classification societies like American Bureau of Shipping and Bureau Veritas.
2018 Initial Strategy
In April 2018 the IMO adopted an initial strategy proposing ambition to reduce total annual greenhouse gas emissions from international shipping by at least 50% by 2050 compared to 2008 levels, and to peak emissions as soon as possible, influenced by submissions from Marshall Islands and Malta. The decision referenced short‑term measures, mid‑century pathways, and the need for a combination of energy efficiency, alternative fuels, and operational measures; it involved negotiation among parties including China, United States, India, and the European Union. The text established timelines for revisions and invited work by technical bodies such as the Sub-Committee on Ship Systems and Equipment.
2023 Updated Strategy and targets
The 2023 update increased ambition by endorsing goals aligned with limiting warming consistent with the Paris Agreement's temperature goals, including a pathway to net zero GHG emissions from international shipping around mid‑century and interim targets such as a 20–30% reduction in total annual greenhouse gas emissions by 2030 compared to 2008 levels. The decision reflected scientific synthesis from the Intergovernmental Panel on Climate Change and political pressure from coalitions like the High Ambition Coalition for Shipping decarbonisation, as well as positions from States such as Norway, United Kingdom, Japan, and Singapore. The revised strategy added explicit acknowledgment of lifecycle emissions and called for accelerated deployment of zero‑emission maritime fuels.
Emission reduction measures and technologies
The strategy advocates a portfolio of technical and operational measures including energy efficiency design standards like the Energy Efficiency Design Index, ship energy management practices such as SEEMP implementations, hull and propeller optimization promoted by DNV, waste heat recovery systems advanced by MAN Energy Solutions, and alternative propulsion systems like batteries and fuel cells developed by firms including Wärtsilä and ABB. Fuel pathways emphasized ammonia, hydrogen, methanol, and biofuels assessed against lifecycle analyses by International Renewable Energy Agency and Sustainable Energy for All. Port and logistics measures included cold ironing and shore power projects coordinated with ports such as Port of Rotterdam, Port of Singapore, and Port of Los Angeles.
Market-based measures and economic instruments
The strategy left open consideration of market mechanisms and economic instruments, prompting proposals for a global levy, a global carbon price, or an emissions trading system tabled by proponents including Marshall Islands, Norway, and European Commission. Opponents including China and India raised concerns about fairness and impacts on developing States and small island developing States such as Tuvalu and Maldives. Industry stakeholders including International Chamber of Shipping and NGOs like Transport & Environment debated design options, collection bodies, and revenue use for technology support, managed through the IMO's policy processes and informed by economic modelling from International Monetary Fund and World Bank studies.
Implementation, monitoring and reporting
Implementation relies on mandatory technical standards and monitoring, reporting and verification systems such as the IMO's Data Collection System (DCS) for fuel consumption and the FuelEU Maritime and EU Emissions Trading System interactions for voyage emissions; flag State implementation involves administrations like United Kingdom Maritime and Coastguard Agency and registries managed by Liberia and Panama. Verification engages classification societies including Lloyd’s Register and American Bureau of Shipping, while data repositories and digital tools are developed in collaboration with technology providers and research institutions such as TØI and University of Oxford. Capacity building and technical cooperation are delivered through IMO programmes and multilateral partners like the United Nations Development Programme.
Criticisms, challenges and responses
Critics argue the strategy's timeline and targets are insufficient compared with pathways recommended by the Intergovernmental Panel on Climate Change, pointing to slow regulatory adoption, fuel availability, and infrastructure gaps highlighted by shipping companies including Maersk and Mitsui O.S.K. Lines. Concerns about equity and impacts on developing States were raised by blocs including the African Group and Gallery of Small Island Developing States, prompting calls for dedicated funding and technology transfer via mechanisms akin to the Green Climate Fund and proposals from Climate Vulnerable Forum. The IMO has responded by accelerating workplans, commissioning studies from bodies such as International Maritime Organization technical committees, and fostering partnerships with ports, industry, and finance institutions including European Investment Bank to close identified gaps.