Low-carbon hydrogen is set to play an important role in the energy transition, particularly in reducing CO₂ emissions in industry and heavy transport. To support this development, Luxembourg is setting up a national hydrogen transport network.
This future network will enable hydrogen to be transported safely and efficiently between production sites and users. It will constitute a new energy infrastructure, complementing existing networks, and will support the development of a hydrogen economy in Luxembourg and the region.
As of 1 December 2025, Creos Luxembourg Hydrogen S.A., a wholly-owned subsidiary of Creos Luxembourg S.A., has been officially designated by the Luxembourg government as the national manager of the hydrogen transport network. In this capacity, Creos Hydrogen is responsible for:
Drawing on Creos' recognised expertise in managing critical energy infrastructure, Creos Hydrogen will establish a structured and transparent framework, enabling industrial and energy players to invest in low-carbon solutions with long-term visibility.
A network connected to Europe
The future Luxembourg network has been designed from the outset as an interconnected infrastructure, fully integrated with European developments. To this end, Creos Hydrogen is developing the HY4Link project in cooperation with Fluxys Hydrogen in Belgium and Natran in France.
This strategic energy corridor aims to connect Luxembourg to the European Hydrogen Backbone (EHB), the future European hydrogen transport network, and to facilitate cross-border exchanges. This integration will strengthen security of supply, support industrial competitiveness and position Luxembourg as a key player in the European hydrogen market.
Creos Hydrogen and NaTran will join forces to develop an interconnected hydrogen network linking Bouzonville (France) to Frisange in southern Luxembourg via Thionville, with a connection to the mosaHYc project. This cross-border interconnection between France and Luxembourg is the first step in establishing hydrogen infrastructure in southern Luxembourg, representing approximately 40 km of network.
In cooperation with Fluxys Hydrogen, Creos Hydrogen will build a pipeline connecting Luxembourg to the Belgium Hydrogen Backbone via the Bras (Belgium) border crossing point. This project will be complemented by the construction of a hydrogen pipeline across Luxembourg, comprising a network of approximately 80 km providing connections to France and Germany.
HY4Link plays a pivotal role for the decarbonization efforts in Luxembourg and the Greater Region by enabling various sectors e.g. industry and transport, to switch from fossils to clean hydrogen. As such, the project facilitates the region’s decarbonization efforts at large.
An important pillar of the energy transition is the creation of sustainable development and growth. HY4Link will contribute to these objectives by boosting sustainable job opportunities and investments that contribute to the long-term prosperity of the entire Greater Region.
Via its cross-border interconnections between Belgium, Germany, France, and Luxembourg HY4Link markedly advances further integration of the Greater Region. For instance, HY4Link’s pipeline system will directly connect market players such as green hydrogen producers with hydrogen consumers across the region.
Hydrogen is a gas that can be used as an energy carrier, just like electricity or natural gas. When used, it produces only water and no CO₂, making it a promising solution for reducing greenhouse gas emissions.
To achieve climate targets, CO₂ emissions must be reduced across all sectors. Hydrogen can help decarbonize certain activities that are difficult to electrify, such as heavy industry or parts of the transport sector. It is also an important component of the objectives of Luxembourg’s Integrated National Energy and Climate Plan (PNEC), which aims to accelerate the energy transition.
Hydrogen can be produced from various energy sources. When it is produced using renewable electricity, for example from solar or wind energy, it is referred to as green hydrogen.
In this case, hydrogen is usually produced using an electrolyser, a device that uses electricity to split water into hydrogen and oxygen. This process, called electrolysis, produces hydrogen without direct CO₂ emissions when the electricity used is renewable.
HY4Link is an infrastructure project aimed at developing a hydrogen transport connection between Belgium, Luxembourg, France and Germany. It will help connect the region to the future European hydrogen network.
The project will connect Luxembourg to the European Hydrogen Backbone (EHB), the future European hydrogen transport network, and facilitate access to this clean energy for industry and the economy. This integration will strengthen security of supply, support industrial competitiveness and decarbonization, and position Luxembourg as a player in the future European hydrogen market.
The project is being developed by Creos Luxembourg Hydrogen, in partnership with Fluxys Hydrogen in Belgium and NaTran in France. These energy infrastructure operators are working together to develop a cross-border hydrogen network connecting the Greater Region to the future European network. In addition, NaTran and Creos Deutschland are also developing the mosaHYc project between France and Germany. Ultimately, HY4Link and mosaHYc will be interconnected, contributing to the development of a hydrogen infrastructure at the heart of the Greater Region.
As part of the HY4Link project, the construction of a hydrogen pipeline across Luxembourg is planned in two sections.
Starting from the Frisange border point at the French border, a route of approximately 40 km is planned to connect the industrial areas in the south of Luxembourg to the future hydrogen network. A second section will link the Bras border point at the Belgian border to Frisange over a distance of about 80 km, crossing the country from north to south.
Studies are currently underway to identify the most suitable routes, taking into account technical, environmental and territorial criteria in order to minimise the project’s impacts as much as possible.
Like many forms of energy, hydrogen must be handled with care. It is flammable, but it has been used safely in industry for many years and the infrastructure is designed to strict technical and safety standards.
Pipelines are constantly monitored and regularly inspected to detect any anomalies and ensure the safe operation of the network. Furthermore, hydrogen is a very light gas that disperses quickly in the air, reducing the risks in the event of a leak.
Before any construction work begins, in-depth environmental studies are carried out to assess the potential effects of the project on wildlife, flora, landscapes and local residents. In this context, an Environmental Impact Assessment (EIA) must be carried out in accordance with Luxembourg regulations. Avoidance, reduction and, where necessary, compensation measures are planned to protect the environment and limit the project's impact.
The HY4Link project was granted Project of Common Interest (PCI) status by the European Union in November 2025, facilitating access to funding and authorisation procedures. The next steps include conducting an environmental impact assessment (EIA) and completing the authorisation procedures, before a construction phase and commissioning scheduled between 2032 and 2034.
Press release - 3.12.2025 - HY4Link hydrogen corridor awarded EU Project of Common Interest status
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Communiqué de presse - 20.06.2024 - HY4Link: un projet d’infrastructure transfrontalière de transport d’hydrogène pour accélérer la décarbonation en France, en Belgique, au Luxembourg et en Allemagne
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Press release - 20.06.2024 - HY4Link: integrated cross-border hydrogen infrastructure project to accelerate decarbonisation in the Belgium-Luxembourg-Grand Est-Saarland Region
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