COP30: Belém 4X Pledge to Quadruple Sustainable Fuels

What the Belém 4X Pledge means for sustainable shipping fuels

Twenty-three countries have agreed to quadruple production and use of sustainable fuels by 2035. The pledge emerged from COP30 in Belém, Brazil, held in November 2025. Shipping sits alongside aviation and heavy industry as a priority sector for this expansion.

The commitment focuses on biofuels, biogas, hydrogen, and synthetic fuels. These alternatives target sectors where electrification remains technically difficult or economically unviable. Consequently, the pledge addresses a persistent challenge in decarbonisation policy.

For UK businesses involved in maritime operations, this development carries practical implications. Supply chain costs, fuel availability, and compliance requirements will shift as these markets develop. Furthermore, companies bidding for contracts with sustainability criteria need to understand how fuel transitions affect their competitive position.

Origins of the commitment and timeline of announcements

Brazil, India, Italy, and Japan announced the initial framework on 14 October 2025 during Pre-COP discussions in Brasília. The group called it the Belém 4X Pledge, though some documents refer to it as the Belém Commitment for Sustainable Fuels. By early November, the signatory list had grown to 23 countries.

Canada joined on 10 November 2025, expanding North American participation. Advanced Biofuels Canada endorsed the move, citing potential for 30,000 domestic jobs and alignment with national net-zero targets. This addition demonstrated appeal beyond the founding coalition.

A high-level meeting on 14 November 2025 mobilised governments, companies, and non-governmental organisations around implementation details. The Clean Energy Ministerial now leads coordination through the Future Fuels Action Plan. This platform connects supply development, demand creation, infrastructure investment, and international trade arrangements.

The pledge uses 2024 production levels as its baseline, following International Energy Agency pathways. Annual ministerial reviews will track progress through to 2035. Therefore, the commitment includes built-in accountability mechanisms rather than relying solely on voluntary action.

Commercial developments from shipping sector participants

Maersk announced plans for 41 methanol-capable vessels by 2027 during the first week of COP30. The order includes the shipping industry’s first large dual-fuel retrofit. Additionally, Maersk committed to purchasing 500,000 tonnes of green methanol annually from 2026 onward.

This procurement volume matters because it creates tangible demand for fuel producers. Investment in production capacity requires confidence that buyers will materialise. Maersk’s commitment provides that signal to the market.

The methanol fleet decision aligns with International Maritime Organization decarbonisation targets. Shipping companies face increasing pressure from environmental, social, and governance criteria in financing arrangements. Moreover, some port authorities and cargo owners now specify emissions performance in their supplier requirements.

However, green methanol production remains limited. Scaling supply to meet Maersk’s needs, let alone broader industry demand, requires significant capital deployment. The Belém 4X Pledge attempts to address this coordination challenge by bringing together fuel producers, transport operators, and governments.

How the framework operates across sectors and jurisdictions

The Future Fuels Action Plan coordinates activity across aviation, shipping, steel, cement, and rail sectors. Each industry faces distinct technical constraints, but all struggle with similar infrastructure gaps. For example, hydrogen distribution networks serve multiple end users once established.

The plan addresses supply chain fragmentation by promoting interoperable standards. Different certification schemes for sustainable fuels currently complicate international trade. Harmonising these frameworks reduces transaction costs and improves market transparency.

Carbon accounting presents another coordination challenge. Companies need consistent methodologies to compare fuel options and report emissions reductions. The pledge commits signatories to aligning their carbon accounting standards, though specific technical details remain under development.

Annual ministerial reviews create regular decision points for adjusting implementation approaches. This structure acknowledges that technology costs, production capabilities, and market conditions will evolve significantly between now and 2035. Flexibility built into the framework allows for course corrections based on real-world results.

Direct implications for UK businesses in maritime sectors

Fuel transition affects multiple aspects of maritime operations. Vessel specifications, bunkering infrastructure, supply contracts, and crew training all require adjustment. Businesses need to assess their exposure across these dimensions.

Companies operating vessels will face decisions about propulsion systems and fuel sourcing. Retrofitting existing ships involves different cost profiles than ordering new builds. Timing these investments depends partly on fuel availability in the ports you use.

Shipowners participating in international trade will encounter varied regulatory requirements. Some jurisdictions will move faster than others in mandating or incentivising sustainable fuel adoption. Understanding these divergent timelines helps with fleet deployment and route planning.

Businesses further up supply chains face indirect effects. Transport costs will shift as fuel prices change. The direction and magnitude of these shifts remain uncertain because sustainable fuel production costs depend on technology learning curves and feedstock availability.

Procurement teams should note that some tender specifications already reference fuel types or emissions performance. This trend will likely intensify as more countries implement decarbonisation policies. Consequently, your ability to demonstrate lower-emission operations could affect contract wins.

Insurance and financing arrangements increasingly incorporate climate-related factors. Vessels running on conventional fuels may face higher premiums or reduced access to capital. This financial dimension adds to the direct operational considerations.

Essential facts about the commitment

• Twenty-three countries have signed the Belém 4X Pledge to quadruple sustainable fuel production and use by 2035, using 2024 levels as the baseline.
• Target sectors include shipping, aviation, steel, cement, and rail, with covered fuels including biofuels, biogas, hydrogen, and synthetic alternatives.
• The Clean Energy Ministerial coordinates implementation through the Future Fuels Action Plan, which addresses supply, demand, infrastructure, and trade barriers.
• Canada joined the pledge on 10 November 2025, with Advanced Biofuels Canada projecting 30,000 domestic jobs from expanded production.
• Maersk committed to 41 methanol-enabled vessels by 2027 and 500,000 tonnes annual green methanol procurement from 2026, demonstrating private sector engagement.
• Annual ministerial reviews will track progress through 2035, creating regular checkpoints for assessing implementation and adjusting approaches.
• The commitment aims to harmonise carbon accounting standards and sustainable fuel certification across participating countries to reduce trade friction.

Risk factors and unresolved implementation questions

Biomass sourcing carries sustainability risks if production competes with food crops or drives deforestation. Certification schemes attempt to address these concerns, but their effectiveness varies. Businesses purchasing biofuels need to understand the provenance of their supply.

Production scaling depends on investment decisions by fuel producers. These companies require confidence in long-term demand and stable policy environments. Uncertainty about either factor could slow capacity additions and keep prices elevated.

Infrastructure development lags behind policy announcements. Bunkering facilities, storage terminals, and distribution networks all require lead time to build. Consequently, fuel availability may remain geographically concentrated even as overall production grows.

Hydrogen and synthetic fuels face particularly high production costs at present. Learning curves and economies of scale should reduce these costs, but the pace remains uncertain. Businesses planning fuel transitions need to account for price volatility during this scaling period.

Different countries within the pledge coalition have varying industrial priorities and capabilities. This diversity could lead to implementation approaches that benefit some sectors or regions more than others. Monitoring these developments helps businesses anticipate where opportunities and challenges will emerge.

What UK businesses should consider now

Start by assessing your current and projected exposure to maritime fuel costs. This analysis should cover both direct vessel operations and transport services you purchase. Understanding your baseline helps quantify potential impacts from fuel transitions.

Review your existing contracts and procurement frameworks. Some agreements may include fuel adjustment clauses that shift price risk. Others may specify fuel types or emissions limits that constrain your options. Identifying these provisions now prevents surprises later.

Consider your position in supply chains serving sectors with strong sustainability requirements. Public sector procurement in the UK increasingly incorporates carbon reduction targets. Demonstrating lower emissions through fuel choices could strengthen your competitive position in these markets.

Monitor developments in carbon reporting requirements and ESG compliance frameworks affecting your industry. Understanding what you will need to disclose helps you prepare appropriate data collection systems. Early preparation typically proves less disruptive than rushed implementation.

Evaluate whether your business would benefit from training on Scope 3 emissions and supply chain decarbonisation. Many companies find that their maritime transport falls into Scope 3, requiring engagement with carriers about their fuel and emissions performance.

Businesses operating internationally should track how different countries implement the pledge commitments. Regulatory divergence could create compliance complexity, but it may also reveal opportunities in jurisdictions moving faster with incentives or mandates.

Consider engaging with industry associations tracking maritime decarbonisation policy. These groups often provide early visibility into regulatory developments and technical standards. Participation also offers opportunities to shape implementation approaches.

Further reading

The Clean Energy Ministerial website hosts information about the Future Fuels Action Plan and participating countries. This source provides official updates as implementation progresses.

The International Maritime Organization publishes technical guidelines and regulatory frameworks relevant to shipping decarbonisation. Their documents cover fuel standards, emissions measurement, and compliance requirements.

UK businesses can access guidance through the Department for Energy Security and Net Zero. This department coordinates UK participation in international climate commitments and domestic policy implementation.

For carbon reporting and net-zero strategy support, SBS provides specialist guidance on compliance with PPN 006 and related frameworks affecting UK businesses. We work with companies across sectors to navigate evolving sustainability requirements.

The International Energy Agency publishes analysis of sustainable fuel production pathways and market developments. Their reports provide context for understanding supply and cost projections referenced in policy commitments.