The first phase of the Hy4Link project was approved by Luxembourg’s government council on 28 October 2026. This phase includes a hydrogen pipeline of almost 40 km Hy4Link hydrogen pipeline linking Thionville, which is in northeastern France, with Pétange in the south of Luxembourg. The approval does not mean construction can start right away. There are certain route alignments that are still being reviewed, and environmental evaluation and approval processes must be finished first.
It is well to be noted that 40 km Hy4Link hydrogen pipeline forms part of the European Hydrogen Backbone, which is the push to develop a continent-wide hydrogen transport network. Phase 1 is a joint development of Creos Luxembourg Hydrogen and the French network operator previously known as GRTgaz, NaTran. The 40 km Hy4Link hydrogen pipeline will also link to mosaHYc, the cross-border hydrogen network between France and Germany.
A second section would be roughly 80 km across Luxembourg from Bras, situated at the Belgian border, to Frisange at the French border, connecting the country to the Belgian Hydrogen Backbone. For the Belgium connection, Creos Hydrogen will partner with Fluxys Hydrogen. In December 2025, Hy4Link was awarded the status of EU Project of Common Interest. This means that the project has a simplified permitting status and is eligible to apply for EU infrastructure funding.
HY4Link aims to link industrial hydrogen users in the Greater Region with supply networks at the North Sea and import terminals in Antwerp, Zeebrugge, and Rotterdam, as well as Dunkirk. The infrastructure will be capable of carrying renewable as well as low-carbon hydrogen.
Creos Luxembourg Hydrogen will be the operator of the national hydrogen transmission network in Luxembourg from December 1, 2025. Creos plans to put HY4Link Part 1 into service in 2032 and Part 2 in 2034. The approval note from the government, dated October 28, 2026 does not include any cost data nor a specific schedule for the Thionville–Pétange segment.