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Energy efficiency

Green Shipping


Utilising green hydrogen across sectors

Green hydrogen enables transport and industry sectors to greatly reduce their carbon footprint, paving the path to a more sustainable future.
19 September 2023

Green hydrogen and its derivatives, such as e-methanol, e-ammonia, and e-kerosene, offer promising alternatives to traditional fossil fuels across many sectors. In agriculture, green ammonia can be used as fertiliser, lowering the carbon footprint of food production. In industry, green hydrogen can serve as a versatile energy source, replacing carbon-intensive processes with greener alternatives. In aviation and shipping, e-fuels can power engines to provide zero-emission mobility.

A safe port for green hydrogen

In Denmark, ports promote sustainable shipping practices by encouraging the use of alternative fuels, electrification, and emission-reducing technologies. They provide facilities for bunkering, shore power connections, and areas for hydrogen and e-fuel production as well as CO2 storage.


Visionaries within fuel cells

In Denmark, visionary companies are developing and manufacturing alternatives to combustion engines and diesel generators, demonstrating remarkable expertise both onshore and offshore. Denmark’s competencies within fuel cells are driven by a combination of R&D, technical expertise, and a strong focus on sustainability.

Capabilities range from Proton Exchange Membrane (PEM) fuel cells and methanol fuel cell systems to high-temperature membrane solutions. The solutions can be applied to both mobile units for use in transportation and in a stationary state for industrial processes.


Technological strengths of the Danish maritime industry

Denmark has a strong maritime heritage. Combined with its commitment to renewable energy, Denmark is an ideal hub for offshore technology and innovation. In fact, the world’s first two-stroke engine capable of running on methanol was designed in Denmark. New developments in the industry go hand in hand with a great understanding of both ships and engines. This becomes important when retrofitting ships to run on methanol instead of diesel where the energy density is lower. Danish naval equipment manufacturers have processes and solutions which enable shipowners to meet regulatory requirements like the Carbon Intensity Indicator (CII) and the Energy Efficiency Existing Ship Index (EEXI).


Energy efficiency equals cost savings

Due to the energy loss in e-fuel production, maximising energy efficiency becomes important. To achieve energy efficiency, various measures can be implemented. In ships, for example, technological improvements like advanced propulsion and cooling systems, as well as optimised ventilation, can contribute to energy savings.

Operational strategies like adjusted sailing speed, route planning, port waiting time, and space utilisation can also reduce energy use. Energy efficiency plays a critical role in unlocking the full potential of e-fuels, as it directly translates into cost savings. Reducing the amount of energy needed to produce, store, and transport e-fuels minimises their production costs, which is crucial for promoting widespread adoption of e-fuels in industry and transport, and making them competitive alternatives to conventional fossil fuels.

Green hydrogen is Danish hydrogen

This article is a part of the white paper “Green hydrogen is Danish hydrogen”. Discover Denmark’s plans to produce green fuels and decarbonise global transport and energy-intensive industries.

Explore the white paper

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