Spanish energy companies Solvay and Enagás are collaborating on a hydrogen storage hub project in Cantabria, Spain, utilizing repurposed salt caverns originally used for soda ash production. Solvay is strategically repurposing its salt cavern network for energy storage, particularly hydrogen and compressed air. The initiative underscores the vital role of the European chemical industry in enabling clean energy solutions. Enagás CEO emphasized the project's significance for Spain's hydrogen infrastructure development and decarbonisation objectives. Solvay's focus on specialty chemicals aligns with its sustainability goals, with similar projects explored in Germany and the UK. While Europe faces challenges, the US leads in hydrogen storage, exemplified by the ACES project in Utah. The global shift towards sustainable energy underscores the importance of innovative solutions like repurposing salt caverns for large-scale energy storage.