[ industry update ]
HydrogenPro validates, begins production of next-gen electrodes HydrogenPro has commenced production of its next-generation electrodes at a new manufacturing line in Aarhus, Denmark. This development marks a significant step in scaling up the company’ s delivery capabilities and represents a major investment in its green hydrogen business.
As part of a broader collaboration with ANDRITZ, HydrogenPro recently completed a full-scale validation test of its Generation 3 electrolyzer technology at Herøya, Norway. The system operated continuously for 500 hours, confirming expected performance levels and product quality. Safe operation was maintained across the full load range – from partial load up to 115 % capacity – demonstrating the robustness and industrial readiness of the technology under real-world conditions.
The validation project involved several European facilities: electrodes were manufactured in Denmark, stack assembly was carried out in Erfurt, Germany, and the system was transported and commissioned in Norway. The initiative highlights a strong European value chain for pressurised alkaline electrolyzers and supports key decarbonisation efforts in hard-toabate sectors such as low-carbon steel production.
Hydrogen injection begins at Etzel storage site Gasunie and Storag Etzel have begun injecting hydrogen into two repurposed salt caverns in Etzel, Lower Saxony, as part of the H2CAST Etzel pilot project. Approximately 90 tonnes of hydrogen are being delivered from Plug Power’ s production site in Werlte, Germany, and stored underground in the caverns.
This development marks the start of the second project phase, H2CAST Build, which follows the successful completion of H2CAST Ready, a preparatory phase focused on verifying the caverns’ suitability for hydrogen storage. In parallel, construction of the associated above-ground facility has commenced.
The project aims to demonstrate the feasibility of large-scale underground hydrogen storage and support the development of a flexible facility with a total capacity of up to 1 TWh. The cavern storage site in Etzel is strategically located near the German-Dutch hydrogen market, with strong links to the planned hydrogen core network and the Energy Hub in Wilhelmshaven.
In the Netherlands, Gasunie has now started developing underground hydrogen storage facilities in the northern part of the country( HyStock). In Etzel, Gasunie and Storag Etzel have been working together since 2023 on the H2CAST pilot project, a trial to prove the feasibility of storing hydrogen in two existing, immense caverns with a geometric volume of around 300,000 cubic metres.
6 Hydrogen Tech World | Issue 22 | June 2025