State Grid Corporation exists and is a state-owned enterprise in nature. China State Grid Corporation is a super-large state-owned enterprise authorized by People's Republic of China (PRC) and the State Council. Its main business is transmission and distribution, and it is responsible for more than 75% of power supply and more than 90% of power grid construction in Chinese mainland.
Within the power supply company, there are also different levels of institutions and departments, such as power grid branches at all levels and power dispatching centers.