February 21, 2024 [H2 View]- Gasunie and Storag Etzel have agreed to develop 1TWh capacity large-scale hydrogen storage caverns in the Etzel salt dome.

Located in the German state of Lower Saxony, the caverns will be connected to the Dutch and German hydrogen market and close to the future Gasunie hydrogen network HyPerLink and the Port of Wilhelmshaven.

The two companies will develop and operate the multi-cavity storage facility, following close collaboration on the pilot project H2CAST which involved testing hydrogen storage in two small existing caverns.

Under the new agreement, Gasunie will investigate the feasibility of a storage facility. The company has already begun developing underground hydrogen storage in the northern Netherlands, the HyStock project.

Gasunie agreed to become a partner in the H2CAST project last January (2023), in collaboration with Storag Etzel. This project saw Gasunie take responsibility for the above-ground facility to connect the two caverns, with the project targeted to be ready in 2026.

For 10 years, Gasunie subsidiary EnergyStock has been storing hydrogen in underground salt caverns due to its “proven safety” making it a “promising option for the storage of hydrogen.”

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