Spiros Zolotas: In The Near-Term, Flexibility Is The Fuel Of The Future

The drive to decarbonise shipping is often presented as a race towards a single fuel solution, yet the reality is far more nuanced. 2026 will not see the industry charging towards green ammonia, green methanol or hydrogen. Instead, the coming year will reflect a more grounded progression shaped by technical limits, economic considerations and the need for clearer regulatory direction. For shipowners facing global pressures and commercial uncertainty, realism is not a retreat from ambition but a necessary condition for meaningful change.

A central difficulty lies in the limits of the wider energy system. Electricity grids in many regions are already under strain, and renewable capacity is far from sufficient to meet rising domestic and industrial demand. As a result, diverting significant amounts of renewable power towards large scale fuel production for shipping is not yet realistic. At the same time, several issues remain with fuels being explored for future use. Methanol combustion produces harmful by products, ammonia presents serious toxicity risks, and hydrogen still requires major engineering progress before it can be deployed safely and reliably. These factors are central to any long-term investment decision.

The result is a sector encouraged to choose a future fuel before the facts are in place. Shipowners cannot sensibly invest in technologies for which supply chains are unproven, costs uncertain and safety considerations incomplete. Nor should they be expected to commit to multi-decade pathways without stable regulatory frameworks. In this context, transitional fuels are not yet ready to gain scalable traction.

What will make a genuine near-term difference is energy efficiency. Reducing fuel consumption delivers an immediate environmental benefit and a clear economic return. Efficiency measures can be deployed now and do not rely on external markets or new infrastructure. Emerging concepts in vessel design and operational management offer the potential for significant reductions in fuel consumption. Improved efficiency also gives owners time. By lowering consumption, they can defer major decisions until technologies and supply chains mature and regulatory direction becomes clearer.

This leads to a critical point. No fuel or technology will be adopted at scale without a sound business case. Regulation can influence behaviour only if it creates meaningful cost or opportunity. At present, Europe is the only region offering such a framework, where pricing structures are beginning to shape investment decisions. Even so, these pressures remain modest and isolated, far from the global alignment required to reshape the fleet. Other measures, such as the carbon intensity index (CII), lack enforcement strength and therefore have limited influence on commercial choices. Until a new fuel presents a clear financial advantage, uptake will remain limited.

The industry therefore faces a responsibility to navigate an uncertain landscape with caution. Regulators must recognise that clarity is not a luxury but a prerequisite for change. Divergent interpretations of fuel pathways between regions create confusion and risk. Without a more harmonised direction, owners cannot plan effectively. In 2026, the focus should be on measures that reduce emissions now while keeping options open for the longer term.

Within this evolving context, RINA’s role is to support the sector with technical guidance and practical insight. Rather than promoting a single route to decarbonisation, RINA works with owners to assess the feasibility of different choices, evaluate risks and understand the economic implications of each pathway. This includes support for energy efficiency strategies and preparation for potential alternative fuels, helping ensure decisions are based on evidence rather than expectation. In a period where much of the debate is driven by ambition, impartial engineering advice provides the clarity needed to act with confidence.

Looking ahead to 2050, a sensible approach is progressive reduction rather than a rapid transition that outpaces what is technically or economically viable. Crucially, shipping cannot decarbonise in isolation. Its progress is tied to wider industrial and energy system changes, particularly the ability of other sectors to expand renewable generation and produce viable fuels at scale. By using the next decade to improve efficiency, remain flexible and allow technologies to mature, owners will be better placed to make firm commitments in the 2030s.

We will decarbonise, but this will be achieved through measured progress, informed choices and careful planning. If 2026 becomes a year defined by realistic expectations and practical action, the industry will take meaningful steps towards a lower carbon future. What shipping needs now is clarity, flexibility and steady momentum, supported by partners ready to guide the way with experience and sound judgement.