Abstract: With the construction and development of new power system, energy storage has become one of the important ways to enhance the regulation capacity of power system and promote the consumption of new energy and foreign electricity. By studying and sorting out the relevant policies and operation of new energy storage in Zhejiang Province, based on the current price mechanism and peak regulation auxiliary service policies of the Province, the economics of user-side battery energy storage is calculated and analyzed, and finally, the development of industrial and commercial user-side energy storage in Zhejiang Province is expected.