ment. Several major shipping companies have already ordered methanol-capable or methanol-ready vessels, signaling growing confidence in its near-term scalability.
One of methanol’ s key advantages is its relative simplicity in handling and integration. As a liquid fuel at ambient conditions, it avoids many of the storage and cryogenic challenges associated with fuels such as hydrogen or LNG. This makes it easier to adapt both onboard systems and port infrastructure compared to cryogenic or high-pressure alternatives.
However, this perceived simplicity should be interpreted with caution. Methanol is both toxic and highly flammable, which introduces significant safety requirements for storage, bunkering, and onboard handling. These characteristics demand robust safety systems, specialized training, and strict operational procedures, making its practical implementation more complex than its physical properties alone might suggest.
At the same time, the scalability of green methanol remains a central challenge. Climate benefits depend entirely on production pathways based on renewable electricity or sustainable carbon sources. At present, global production capacity is still limited, which continues to drive high costs and constrain widespread adoption.
Despite these limitations, methanol is increasingly viewed as one of the most realistic near-term solutions for newbuild investments.
AMMONIA POSITIONED AS A LONG- TERM ZERO-CARBON OPTION
Ammonia is widely regarded as one of the most promising long-term zero-carbon marine fuels, particularly for deep-sea shipping segments where energy density requirements are high and direct electrification is not feasible.
Because ammonia contains no carbon, its use does not produce direct CO 2 emissions during combustion. This makes it an attractive option in long-term decarbonization scenarios, especially if produced using renewable energy. However, ammonia combustion can result in the formation of nitrogen oxides( NO x
), which are harmful atmospheric pollutants and may also contribute indirectly to greenhouse gas effects depending on atmospheric chemistry and lifecycle conditions. This means that while ammonia eliminates carbon emissions at the point of use, it does not automatically eliminate all climate and environmental impacts.
Significant progress is being made in engine development and fuel system photo: PIXABAY
10 seatec 2 / 2026