By Andrew Darnton, Shipping Correspondent
The International Maritime Organization’s Marine Environment Protection Committee (MEPC) concluded its second Extraordinary Session (MEPC/ES.2) in London on October 17, marking a constructive phase in the development of the IMO’s Net-Zero Framework (NZF). While the Committee did not proceed to formal adoption of the MARPOL Annex VI amendments this session, delegates reached important points of convergence that strengthen the basis for a comprehensive, globally applicable system to reduce greenhouse-gas (GHG) emissions from international shipping.
A Deliberate Step Toward Consensus
MEPC/ES.2 built on the progress made at MEPC 83 in April 2025, where the NZF was approved in principle. The London session focused on refining technical details and legal procedures before formal adoption. Although the final vote was deferred to allow additional consultation, most member states reaffirmed their commitment to a global, market-based mechanism that ensures equitable and predictable implementation.
Delegates agreed to continue working intersessionally to finalize elements related to compliance timelines, data verification, and the operational design of the IMO Net-Zero Fund. This fund will serve as a key vehicle for channeling revenues from the proposed compliance unit system into innovation, capacity building, and support for developing states.
The one-year extension provides time to refine these mechanisms and achieve a broader consensus—an outcome that many industry observers view as both pragmatic and productive.
Technical and Institutional Advancements
The session yielded concrete progress across several technical areas. The Intersessional Working Group on GHG Reduction (ISWG-GHG 20), set to meet immediately following MEPC/ES.2, received a strengthened mandate to develop guidelines for lifecycle assessments of marine fuels, emissions accounting, and certification standards.
The Committee also endorsed updates to parallel environmental initiatives, including continued work on a biofouling convention, expanded measures on marine plastic litter, and the forthcoming North-East Atlantic Emission Control Area (ECA). These efforts maintain the IMO’s integrated approach to marine environmental protection.
Predictability and Preparation
For industry stakeholders, the outcome provides continuity and direction. By maintaining the NZF as the core framework while allowing more time to resolve implementation details, the IMO has signaled stability rather than uncertainty. The deferral ensures that when the framework is adopted, it will be more technically robust and better aligned with national regulatory systems such as the EU ETS and FuelEU Maritime.
Shipowners and ports now have a clearer sense of the timeline ahead and can continue confidently preparing for an eventual global regime.
A Foundation for Global Alignment
While some had hoped for immediate adoption, the prevailing assessment is that the IMO achieved what was necessary at this stage: a strengthened foundation for unified, implementable regulation. The cooperative tone in London suggested a maturing process—one that favors durability and fairness over speed.
By focusing on consensus-building, the IMO is positioning the NZF not just as a technical mechanism, but as a shared commitment across maritime nations. The next year will be critical for translating that commitment into law, but the progress at MEPC/ES.2 indicates that the sector remains firmly on course.
MEPC/ES.2 closed with clear alignment on principles, a structured roadmap for further work, and sustained commitment from all major participants to finalize the Net-Zero Framework in 2026. While the session stopped short of adoption, it succeeded in strengthening collaboration, refining technical foundations, and confirming that the global maritime industry continues to move forward—steadily and collectively—toward net-zero emissions.
