It is an industrial sector that converts primary energy sources such as coal, oil, natural gas, nuclear fuel, hydropower, ocean energy, wind energy, solar energy, biomass energy, etc. into electrical energy through power generation facilities, and then supplies it to users as energy through transmission, transformation, and distribution systems. The industrial sector that produces, transports, and distributes electrical energy. Including power generation, transmission, transformation, distribution and other links. The production and consumption processes of electrical energy are carried out simultaneously, without interruption or storage, and require unified scheduling and distribution. The power industry provides the basic driving force for industry and other sectors of the national economy, and subsequently builds a number of large and medium-sized hydropower stations in areas where conditions permit, which is a leading sector in the development of the national economy.