Abandoned hydrogen energy storage

What are the Geological possibilities of large-scale hydrogen storage?

Conclusion Potential geological possibilities of large-scale hydrogen storage include depleted gas reservoirs, aquifers, hard rock caverns, and salt caverns. Compared with other underground hydrogen storage methods, salt caverns are the best choice for storing extremely unstable power output of solar energy and wind energy.

Which type of underground hydrogen storage is best?

When considering the main choice of underground hydrogen storage, salt cavern is the best choice for large-scale hydrogen storage, which can be connected with the shaving peak of wind energy and solar energy. Salt caverns have the capacity to allow higher frequency of gas injection and withdrawal.

What is hydrogen energy storage?

The idea behind hydrogen energy storage is to generate hydrogen when electricity is surplus, store it, and then use it to provide fuel for energy production systems during peak demand. There are further uses for hydrogen storage (Fig. 2). Fig. 2. The concept of underground hydrogen storage in geological structures.

Which space is more suitable for storing energy in the form of hydrogen?

Underground reservoirs/spaces are more suitable for storing energy in the form of hydrogen on a large scale , . The underground salt cavern is the sole underground space that has been successfully used as hydrogen storage facilities.

Can abandoned rock caverns store hydrogen?

Up to now, except abandoned salt caverns, there have been no other abandoned rock caverns used to store hydrogen because of the high requirements of gas tightness . Abandoned caverns might be an another option for hydrogen storage, but they need strong certifications.

Where can hydrogen be stored on a large scale?

On a large scale, hydrogen can be stored in large above-ground container tanks or deep underground geological structures, such as aquifers, depleted gas reservoirs, hard rock caverns, and salt caverns. Underground reservoirs/spaces are more suitable for storing energy in the form of hydrogen on a large scale , .