The energy management system is to start from the whole process of the system, follow the principles of system management, and establish a complete and effective and documented energy management system in the organization through the implementation of a complete set of standards and specifications.It focuses on the establishment and implementation of process control, so that the activities, processes and their elements of the organization are continuously optimized.Through routine energy-saving monitoring, energy audit, energy efficiency benchmarking, internal audit, energy consumption measurement and testing, energy balance statistics, management review, self-evaluation, energy-saving technological transformation, energy-saving assessment and other measures, we can continuously improve the effectiveness of continuous improvement of the energy management system, achieve energy management policies and commitments, and achieve expected energy consumption or use targets.

ISO 50001 standard draws on the successful models of ISO 9001 (quality management) and ISO 14001 (environmental management), combines the characteristics and special requirements of energy management, uses the concept of system management and the whole process, adopts the internationally accepted PDCA model, and integrates management and energy-saving technologies. An effective energy management system (EnMS) can help organizations establish relevant processes to improve energy efficiency. By guiding the organization to determine the elements and processes of an effective energy management system, help the organization achieve energy policies and goals, improve the efficiency and level of the organization's energy management. And it also helps the organization improve energy performance including energy efficiency, energy use and energy consumption, and contributes to the conservation and rational use of energy. It helps to reduce the cost of production (service) operation and remain competitive when the price of energy resources is rising. It is helpful to establish the concept of energy conservation and emission reduction, form a self-discipline mechanism for energy conservation and emission reduction, and meet the national energy consumption indicators and requirements.