2。 Electric Power Bureau-At present, some regional (prefecture-level) or county-level power supply enterprises are still using the previous title of planned economy. Now, most places have changed the title of this functional department to the name of the enterprise, XXXX Power Supply Company;
3。 Power supply company-a power supply enterprise in a certain area (prefecture-level) or county level, which is mainly responsible for the operation and maintenance of transmission and distribution lines and substations within its jurisdiction, as well as the construction of lower voltage power grids;
Administratively and technically, regional power grid subsidiaries under State Grid Corporation (such as Northwest Power Grid Corporation, North China Power Grid Corporation and Northeast Power Grid Corporation), provincial power companies under regional power grid corporations (such as Ningxia, Gansu, Shaanxi, Qinghai and Xinjiang), and power grid construction, operation and dispatching centers under provincial power companies.