Industrial and commercial energy storage refers to the use of energy storage technology in the industrial and commercial fields to achieve flexible management and optimization of power demand. This kind of energy storage system can be used to balance the load on the power grid, improve the utilization rate of electrical energy, reduce the cost of electricity, cope with peak power demand, and strengthen the acceptance and utilization of renewable energy. Industrial and commercial energy storage can adopt various technologies, such as lithium-ion battery energy storage, fuel cell energy storage, supercapacitor energy storage, etc., to play a role in various large-scale application scenarios. Through industrial and commercial energy storage, the flexibility and reliability of the power system can be improved, and the intelligent and sustainable development of the power system can be promoted.