Underwater energy storage and rock cave energy storage

What is underground salt cavern storage?

Underground salt cavern storage has become the preferred medium for storing gas energy and strategic substances. Salt caverns are suitable for storing small molecular gases due to the low porosity and permeability of salt rocks.

How can large-scale energy storage be implemented in salt caverns?

Compressed air and hydrogen storage are two main available large-scale energy storage technologies, which are both successfully implemented in salt caverns . Therefore, large-scale energy storage in salt caverns will also be enormously developed to deal with the intermittent and fluctuations of renewable sources at the national or grid-scale.

Is cavern energy storage safe in low-grade salt rock reservoirs?

The cavern roof remains the most critical component for ensuring the safe operation of SC-CAES. Therefore, this study provides a theoretical basis for evaluating the safety of TWH-cavern energy storage in low-grade salt rock reservoirs and expands the potential sites for SC-CAES.

Are salt caverns a good choice for energy storage?

Among all the underground structures, due to their strong tightness/stability, lower proportion of cushion gas, and good operational flexibility, salt caverns are regarded as the most favorable choice for energy storage―especially for gas, hydrogen and compressed air .

What role do salt caverns play in energy storage?

With the demand for peak-shaving of renewable energy and the approach of carbon peaking and carbon neutrality goals, salt caverns are expected to play a more effective role in compressed air energy storage (CAES), large-scale hydrogen storage, and temporary carbon dioxide storage.

Can a salt cavern store CO2?

The most recent 50 years of research on salt cavern underground energy storage (oil, natural gas) has accumulated a rich theoretical research foundation and engineering experience for salt cavern CO 2 storage.