Underground waste gas space energy storage

What is deep underground energy storage?

Deep underground energy storage is the use of deep underground spaces for large-scale energy storage, which is an important way to provide a stable supply of clean energy, enable a strategic petroleum reserve, and promote the peak shaving of natural gas.

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 underground gas storage?

There is a need to study the gas mixtures underground for storage. The concept of underground gas storage is based on the natural capacity of geological formations such as aquifers, depleted oil and gas reservoirs, and salt caverns to store gases.

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 are energy storage systems needed?

Energy storage systems are required to increase the share of renewable energy. Closed mines can be used for underground energy storage and geothermal generation. Underground closed mines can be used as lower water reservoir for UPHES. CAES systems store energy in the form of compressed air in an underground reservoir.

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.