The power industry converts primary energy such as coal, petroleum, natural gas, nuclear fuel, hydropower, marine energy, wind energy, solar energy, and biomass energy into electricity through power generation facilities, and then supplies users as energy through power transmission, transformation and distribution department. The industrial sector that produces, transmits, and distributes electrical energy. Including power generation, transmission, transformation, and distribution. The production process and the consumption process of electric energy are carried out at the same time, which can neither be interrupted nor stored, and need to be uniformly dispatched and distributed. The electric power industry provided basic power for industry and other sectors of the national economy. Subsequently, a number of large and medium-sized hydropower stations were constructed in areas with conditions, which were the leading sectors for the development of the national economy.