First understand the basic concept of energy storage. Energy storage refers to the process of storing energy through the medium or equipment, and then released when needed. Generally speaking of energy storage, it mainly refers to the storage of electrical energy. In fact, energy storage itself is not an emerging technology, but from an industrial perspective, it is in the stage of starting and development. Energy storage technology is a key node for future energy systems with flexible, inclusive and balanced functions.

The key ring in the system can be applied to any link of "sending, losing, matching, and use". Electricity is used to use, and it cannot be stored directly. The storage can smooth the power fluctuations and reduce the waste of resources. According to the application scenario, it can be divided into user sides (spontaneous use, peak valley price difference), power generation side (renewable energy grid grid, reducing the abandoned light and abandoning wind), power grid side (power peak adjustment, frequency adjustment), transmission side side, and auxiliary service Essence