The H2med corridor, connecting the Iberian Peninsula with France and the German Core Grid, is a flagship initiative to ensure hydrogen supply to Central Europe. The project builds one of Europe’s main Energy Highways.
It is aiming to cover up to 10 percent of the European need for hydrogen.
Strong and reliable partnership
H2med is the result of a strong partnership between five TSOs from four European countries, including REN (Portugal), Enagás (Spain), NaTran and Teréga (France), and OGE (Germany). Together they are developing the corridor, that consists of the Portuguese and Spanish Hydrogen Backbones, connected by the interconnection CelZa from Celorico da Beira to Zamora. The second interconnection, forming the hydrogen backbone through Europe, is BarMar, connecting Barcelona and Marseille, forming a pivotal link between the Spanish and the French Hydrogen Backbones. The corridor then stretches towards the interconnection in Medelsheim, where the French network is connected to the German Hydrogen Core Grid.
Reliable supply at competitive costs
The whole corridor has a length of about 6,000 kilometers, from which 35 percent are repurposed pipelines, which makes the project faster and cost efficient. With a capacity of 2 million tons per annum, H2med will play a crucial role in Europe’s supply with hydrogen. It connects the production centers in Portugal and Spain, powered by wind and solar energy, with the main demand centers in Germany. France will be a producer as well as a consumer, with accelerating development towards sustainable industries.
H2med will be an important source of cost-competitive renewable energy, because of the low production costs and the low transport costs, compared with shipping from overseas. In a politically volatile word, European partners build a strong, resilient and reliable backbone for the European supply with energy.
Strong political support for H2med
The H2med corridor receives strong political support by all national governments as well as the EU. For the second time large parts of the corridor are included in the PCI list, named as Projects of Common Interest, which confirms the strategic nature of the corridor. In 2025, CEF-E grant Agreements were signed for BarMar, CelZa, the Portuguese and Spanish Backbones, the Spanish storage North-1 and the French networks HY-FEN and RHYN. In total, more than one third of the funds allocated to hydrogen infrastructure were awarded to projects along the H2med corridor, for a total of 97.2 million Euro.
Want to know more about this promising project? Check https://h2medproject.com/ and visit H2med at booth 6H131 at E-World 2026.