Established on the basis of a sum of enterprises and institutions formerly owned by State Power Corporation of China,the State Grid Corporation of China (short for SG) is a giant enterprise approved by the State Council to operate the business of power transmission, transformation, distribution and other assets of power grid. As a pilot state-holding corporation and an investing institution authorized by the State Council, its leading group of is under the administration and management of the Central Government directly. SG operates in such a manner that the president as the legal person is responsible for all major activities.

　　At present, there are 728 thousand employees totally working for SG, among which 552 thousand employees(71.7% of the totai) are engaged in the field of industry, 157 thousand employees (21.6% of the total) are engaged in the field of architecture and 14.6 thousand employees (2% of the total) are working in the research and design institutes.