Application and classification of energy storage

Currently, there are three major application areas for energy storage. From the perspective of the entire power system, the application scenarios of energy storage can be divided into three major scenarios: generation side, transmission and distribution side, and consumption side. In addition, applications also include auxiliary services, distributed generation, and microgrids.

Among them, the energy storage methods on the power generation side and the power grid side are the most diverse, with applications such as mechanical energy storage, electromagnetic energy storage, electrochemical energy storage, thermal energy storage, chemical energy storage, etc., while on the user side, almost all of them are electrochemical energy storage. In practical terms, the main energy storage devices on the user side are lithium batteries and lead-acid batteries. And lithium batteries, due to their numerous excellent characteristics, will gradually become the absolute protagonist in the field of home storage;

In terms of technical principle, Energy storage is mainly divided into physical energy storage, electrochemical energy storage and electrical energy storage, thermal energy storage and chemical energy storage. For many years, pumped energy storage has dominated, but its share has rapidly declined in the past two years. On the contrary, the share of electrochemical energy storage has grown rapidly.