Stored energy refers to the process of storing energy through a medium or device and releasing it when needed. Energy storage is another term in oil reservoirs, which represents the ability of the reservoir to store oil and gas. Energy storage itself is not an emerging technology, but from an industrial perspective, it has just emerged and is in its infancy.

China has not reached the level that the United States and Japan treat energy storage as an independent industry and issue special support policies. Especially in the absence of a payment mechanism for energy storage, the commercialization model of the energy storage industry has not yet taken shape.