Green Hydrogen Storage Trial in French Salt Caverns

• Engie's Geomethane trials hydrogen storage in salt caverns with green hydrogen from Lhyfe, aiming to decarbonize Marseille-Fos-Sur-Mer industrial site in France.

French energy major Engie SA's natural gas unit Geomethane has begun trials for hydrogen storage in salt caverns after receiving a 350-kilogram delivery of green hydrogen from Lhyfe. The hydrogen was injected into the salt caverns used for natural gas storage and will be analyzed after several weeks.

The project, led by the DLVAgglo urban community and Geomethane, aims to decarbonize the Marseille-Fos-Sur-Mer industrial site in southern France with the use of green hydrogen. Lhyfe's CEO Matthieu Guesne highlighted the importance of storage as more sites produce green hydrogen, with salt caverns being a viable option across Europe. The trial will provide valuable feedback on this storage method.

What are the benefits of storing green hydrogen in salt caverns?

• Salt caverns provide a cost-effective and efficient way to store large quantities of green hydrogen.
  
• Storing hydrogen in salt caverns allows for long-term storage, making it possible to store excess renewable energy for later use.
  
• Salt caverns offer high storage capacity and can help stabilize the grid by providing a reliable source of energy during peak demand periods.
  
• The use of salt caverns for hydrogen storage can help accelerate the transition to a renewable energy system by providing a reliable and flexible energy storage solution.
• Salt caverns are geologically stable and secure, reducing the risk of leaks or accidents compared to other storage methods.