The State Grid Corporation of China, commonly known as the State Grid, is the state-owned electric utility monopoly of China. It was founded in 2002.
It is the largest utility company in the world, and as of 2019, the world's fifth largest company overall by revenue. In 2016/17 it was reported as having 927,839 employees, 1.1 billion customers and revenue equivalent to US$363.125 billion.
After the electricity "Plant-Grid Separation" reform in early 2002, the assets of State Electric Power Corporation were divided into the five "power generation groups" that retained the power plants and five regional subsidiaries belonging to the State Grid Corporation of China in Beijing.
According to en.wikipedia
