Artificial tunnel storage compressed air energy storage

What is compressed air storage energy (CAES) technology?

Compressed air storage energy (CAES) technology uses high-pressure air as a medium to achieve energy storage and release in the power grid. Different from pumped storage power stations, which have special geographical and hydrological requirements, CAES technology has urgent and huge development potential in areas rich in renewable energy [2, 3].

Will China's first large-scale compressed air energy storage project be commercialized?

A state-backed consortium is constructing China’s first large-scale compressed air energy storage (CAES) project using a fully artificial underground cavern, marking a major step in the technology’s commercialization.

Could a cavern be China's first underground energy storage project?

A state-led consortium is developing a 300 MW/1200 MWh compressed air energy storage (CAES) project in Xinyang, Henan province, featuring an entirely artificial underground cavern—China’s first of its kind.

Why should energy storage technology be developed?

Therefore, supporting energy storage technology must be developed to smoothen the grid input and improve the consumption level of renewable energy . Compressed air storage energy (CAES) technology uses high-pressure air as a medium to achieve energy storage and release in the power grid.

Are flexible sealed CAES tunnels airtight?

However, the current airtightness calculations for flexible sealed CAES tunnels often ignore the process of high-pressure air penetration and accumulation in the lining and surrounding rock after passing through FSL. Consequently, the tunnel airtightness cannot be accurately assessed.

What is underground gas storage?

Different from pumped storage power stations, which have special geographical and hydrological requirements, CAES technology has urgent and huge development potential in areas rich in renewable energy [2, 3]. Underground gas storage is an important component of large-scale CAES power stations. At present, underground gas storage has two main types.