The role of large underground air energy storage tanks

What are the five underground large-scale energy storage technologies?

In this work, the characteristics, key scientific problems and engineering challenges of five underground large-scale energy storage technologies are discussed and summarized, including underground oil and gas storage, compressed air storage, hydrogen storage, carbon storage, and pumped storage.

What is large-scale underground energy storage?

Renewable and Sustainable Energy Reviews, 2011, 15 (1): 839-844. <p>Large-scale underground energy storage technology uses underground spaces for renewable energy storage, conversion and usage. It forms the technological basis of achieving carbon peaking and carbon neutrality goals.

Why is deep underground energy storage important?

It is an effective way to implement SPRs, natural gas peak shaving, a sustainable supply of renewable energy, and the large-scale and efficient utilization of hydrogen. The development of deep underground energy storage is a key issue in achieving carbon neutrality and upgrading China’s energy structure.

Why is underground gas storage important for China's Energy Security?

Therefore, accelerating the construction of underground gas storage is an important strategic demand to ensure China’s energy security. Based on the above analysis, the use of deep underground spaces for large-scale energy storage is one of the main methods for energy storage.

What is the future development trend of compressed air energy storage?

The future development trend of compressed air energy storage (CAES) and hydrogen storage was evaluated. A carbon dioxide storage model based on carbon cycle in salt cavern was proposed. The potential of low grade salt formations with accumulated sediment space for gas storage was emphasized.

Why is underground gas storage important?

Secondly, underground gas storage plays an important role in balancing the pressure and gas transmission capacity of the gas pipeline network and by adjusting the regional balanced gas supply . Thus, the maintenance cost of a natural gas pipeline network with underground gas storage is 15% lower than one without underground gas storage.