Liujiaxia Hydropower Station is the first one of China's megawatt hydropower stations. The main stream of the Yellow River is located in Yongjing County, Gansu Province. Construction started in September 1958, stopped in 1961, resumed in 1964 and completed in December 1974. The dam is a gravity dam with a maximum height of 147 meters and a total reservoir capacity of 5.7 billion cubic meters. Five units are installed with a total capacity of 12.25 million kilowatts and an annual power generation capacity of 5.58 billion kilowatt-hours. The first 225,000 kW unit was put into operation in March 1969.