In June, 2002, State Power Corporation was split and reorganized into 1 1 company, including State Grid Corporation, China Southern Power Grid Corporation, China Huaneng Group Corporation, China Datang Corporation, china huadian corporation, China Guodian Corporation, China Power Investment Corporation, China Power Engineering Consulting Group Corporation, China Hydropower Engineering Consulting Group Corporation and China Water Conservancy and Hydropower Group Corporation. ?
After the split of the State Power Company, there are two power grid companies, five power generation groups and four auxiliary groups. The separation of power plant and power network was successful, but the reform of separation of main and auxiliary was delayed for various reasons. According to the spirit of "separation of main and auxiliary", State Grid should divest all non-grid assets, including secondary units engaged in power design, equipment manufacturing and power construction, and non-grid assets allocated by local power companies.