Xiangjiaba Dam a ±800 kV HVDC link, the Xiangjiaba–Shanghai HVDC system, which transmits much of the power to Shanghai. Xiangjiaba Dam The Xiangjiaba Dam () is a large gravity dam on the Jinsha River, a tributary of the Yangtze River in Yunnan Province and Sichuan Province, southwest China. The facility has eight Francis turbines, four with a capacity of 812 MW and four rated at , totalling an installed capacity of . Xiangjiaba Dam is China's third-biggest hydropower station following Three Gorges Dam and Xiluodu Dam. Construction started on November 26, 2006, and its first generator was commissioned in October 2012. The
Three Gorges Dam The project used of concrete (mainly for the dam wall), used 463,000 T of steel (enough to build 63 Eiffel Towers), and moved about of earth. The concrete dam wall is high above the rock basis. When the water level is at its maximum of above sea level, higher than the river level downstream, the dam reservoir is on average about in length and in width. It contains of water and has a total surface area of . On completion, the reservoir flooded a total area of of land, compared to the of reservoir created by the Itaipu Dam. The