Spanish energy firms to turn salt cavern into hydrogen storage

  • Gas
  • June 27, 2025

Spanish energy companies Solvay and Enagás plan to develop a hydrogen storage hub in Cantabria, Spain, that could play a role in Europe’s decarbonisation efforts.

The project will involve the partners repurposing salt caverns – originally created for the production of soda ash – for the long-term storage of hydrogen.

Solvay, a soda ash production specialist, is now actively repurposing its network of salt caverns into strategic assets for energy storage, particularly for hydrogen and compressed air.

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