Longtan Hydropower Station, located in the upper reaches of Hongshui River in Guangxi, is part of the mainstream of the Pearl River. Longtan Hydropower Station is a landmark project of "West-to-East Power Transmission" and a key project of the Western Development. The power station started construction in 2001 and was fully put into operation at the end of 2009. The designed water storage level is 400 meters, the dam height is 216.5 meters, the dam top length is 836 meters, the reservoir capacity is 27.3 billion cubic meters, the installed capacity is 6.3 million kilowatts, and the annual power generation is 18.7 billion kilowatt-hours.