Why Is Shipping Turning To Fuel Cells For Clean Power?

For years, fuel cells have been discussed as a promising technology for maritime decarbonisation. Today, the conversation is evolving; the focus is no longer on whether fuel cells can work, but on where they can deliver the greatest value across maritime operations. As regulations tighten, carbon costs rise, and shipowners seek practical pathways to reduce emissions, fuel cells are increasingly moving from demonstration projects into commercial deployment.

Regulations such as FuelEU Maritime and the EU Emissions Trading System (EU ETS) are fundamentally reshaping the economics of shipping. They are emerging as some of the industry’s most powerful decarbonisation drivers. Every tonne of greenhouse gas emissions now carries a growing financial consequence, while technologies capable of eliminating those emissions are beginning to create tangible commercial advantages.

In this context, fuel cells are emerging as one of the most future-proof energy technologies available to shipowners and port operators. While hydrogen availability and infrastructure remain in development, fuel cells offer a strong pathway to emissions reduction and long-term resilience, particularly as hydrogen can be produced locally using renewable energy sources.

This direction of travel is also being reinforced at the industry level, with initiatives such as the Exponential Roadmap Initiative recognising companies like PowerCell for their role in advancing scalable climate solutions for maritime decarbonisation.

Whether deployed for primary propulsion, auxiliary power generation, or shore-side energy supply, fuel cells offer a pathway to fossil-free operations while delivering flexibility in fuels, vessel types, and operational profiles as energy systems mature.

The regulatory landscape is changing fast: the impact of FuelEU Maritime and the EU ETS

The maritime industry is entering a new phase of decarbonisation where compliance is no longer a future challenge but an immediate operational consideration.

FuelEU Maritime began its first reporting period in 2025, but its full impact will become increasingly visible as compliance balances are assessed and operators determine whether to invest in emissions reductions or pay penalties. At €2,400 per tonne of VLSFO energy equivalent, non-compliance costs are significant enough to influence investment decisions today.

Analysis from industry specialists shows that, by 2030, FuelEU Maritime penalties could reach an average of €520,000 per year for passenger vessels and €214,000 for container ships. However, exposure varies significantly between individual vessels. Some passenger ships could face annual penalties of between €1.8 million and €2.5 million, while fines for certain container vessels may approach €1 million. As greenhouse gas intensity limits tighten over the coming years, these compliance costs will only increase.

At the same time, the EU ETS continues its phased implementation. By 2026, shipping companies will be required to surrender allowances for 100% of applicable emissions under the scheme, further reinforcing the incentive to reduce fossil fuel consumption.

Alongside these EU-wide policies, regional regulation is also beginning to move ahead. Norway, in particular, is emerging as a frontrunner, with plans to require offshore vessels to cut emissions from 2029. While local in scope, it is increasingly seen as a potential framework for wider adoption, mirroring how Norway’s early leadership in electric vehicle uptake helped pave the way for broader international rollout across other markets.

Compliance can become a competitive advantage

One of the most overlooked aspects of FuelEU Maritime is that it rewards ship operators who are early movers within the industry. The regulation includes mechanisms that allow surplus compliance to be banked for future years or pooled across fleets. This means ships that significantly outperform greenhouse gas intensity requirements can generate compliance value that helps offset deficits elsewhere.

For operators deploying fuel cells, this effectively transforms emissions performance into a strategic asset. A vessel equipped with hydrogen or methanol fuel cells can achieve compliance surpluses that may be transferred within a fleet or used to strengthen future compliance positions. Rather than viewing decarbonisation solely as a cost, shipowners can begin to treat emissions reductions as a source of commercial value.

This flexibility is particularly important for fleet operators who are seeking a more phased approach to decarbonisation. Instead of replacing entire propulsion systems overnight, they can introduce fuel cells where they deliver the greatest impact first and leverage the resulting compliance benefits across multiple vessels.

Auxiliary power can offer an immediate opportunity

While much of the focus in maritime decarbonisation centres on fuel cells as a propulsion technology, one of the most immediate and practical opportunities lies in auxiliary power applications.

Fuel cells can replace conventional diesel generators that supply hotel loads, onboard services and low-speed manoeuvring operations. These systems are often used when vessels are operating close to populated coastal communities or while berthed in ports, where local emissions have the greatest impact on air quality.

Unlike combustion-based generators, fuel cells produce no nitrogen oxides (NOx), sulphur oxides (SOx) or particulate matter at the point of use. This delivers immediate environmental and public health benefits, particularly in densely populated port regions.

Auxiliary fuel cell installations also align closely with FuelEU Maritime’s upcoming shore power requirements. From 2030 onwards, passenger and container vessels above 5,000 gross tonnes calling at major European ports must either connect to onshore power supplies or use certified alternative solutions while at berth.

Fuel cells provide a practical route to compliance while allowing operators to maintain greater control over their onboard energy supply. Perhaps more importantly, auxiliary fuel cells offer a pragmatic first step towards wider decarbonisation. Shipowners can reduce greenhouse gas intensity, lower future regulatory exposure and build operational familiarity with new technology without immediately replacing primary propulsion systems.

Fuel flexibility supports the long-term investment

One of the greatest challenges facing shipowners today is uncertainty around future fuels and the timeline to their adoption. Hydrogen, green hydrogen, e-methanol, green ammonia and other renewable low-carbon fuels are all competing for market uptake, while infrastructure development remains uneven across global shipping routes.

In this context, fuel cells offer a practical bridge solution. Beyond their flexibility in application, they also provide a pathway to greater energy resilience and reduced dependence on imported fossil fuels, particularly where hydrogen, or its derivatives, can be produced locally using renewable energy.

As highlighted in the IEA analysis, key port clusters and major harbours are increasingly well positioned to access low-carbon hydrogen production and distribution pathways, reinforcing their potential role as early nodes in emerging hydrogen economies.

Proton Exchange Membrane (PEM) fuel cells can operate directly on hydrogen or be integrated with reformer technologies capable of converting fuels such as methanol into hydrogen on board. Methanol reforming is already commercially available and offers a practical pathway for operators seeking to leverage existing fuel supply chains.

Importantly, methanol can achieve significantly higher efficiency when used in fuel cell systems compared with conventional combustion engines. As alternative fuels remain more expensive than fossil fuels, maximising efficiency becomes increasingly important.

This flexibility allows operators to invest in a technology platform that can evolve alongside fuel availability rather than committing to a single long-term fuel pathway.

From demonstration to deployment

Fuel cell technology is no longer confined to solely demonstration projects; hydrogen fuel cells are already being deployed aboard ferries, service vessels and other commercial applications. Projects are increasingly being developed into carriers and cruise ships, reflecting growing confidence in the technology’s ability to scale for short-sea and coastal applications.

For example, PowerCell Group is supplying fuel cell systems for two hydrogen-powered bulk carriers to be built by GMI Rederi AS. The contract includes 14 Marine System 225 units providing over 3 MW of power, as well as engineering services.

The maritime industry often speaks about future fuels. Increasingly, it should also be talking about future power systems.

Fuel cells are not tied to a single fuel, vessel type or operating model, but can provide a flexible electrification platform capable of supporting multiple decarbonisation pathways while helping operators navigate an increasingly complex regulatory environment.

As the shipping industry aims to move towards a fossil-free future, the adaptability, flexibility and wide array of use cases of fuel cells may prove to be one of the industry’s most valuable assets.