Germany’s largest salt-cavern hydrogen-storage demonstration project begins filling operation

Storag Etzel’s H2Cast project in Lower Saxony will be able to store 90 tonnes of H2 underground — 600 times more than the first facility in the country

An aerial view of the hydrogen filling equipment at Storag Etzel's H2Cast facility.
An aerial view of the hydrogen filling equipment at Storag Etzel's H2Cast facility.Photo: Storag Etzel
Published 9 May 2025, 13:19Updated 9 May 2025, 13:24
StorageSalt cavernsGermany