The Jinping-I Hydropower Station is a large hydroelectric project on the "Jinping Bend" of the Yalong River (Yalong Jjiang) in Sichuan, China. Construction on the project began in 2005 and when complete, it will have a 3600 MW capacity to produce between 16 and 18 TW·h (billion kW·h) annually. Supplying the power station will be a reservoir created by a 305 m tall arch dam, soon to be the tallest in the world.
The project's objective is to supply energy for expanding industrialization and urbanization, improve flood protection, and prevent erosion.Harnessing hydropower on the Jinping bend of the Yalong River has been in planning for decades. The length of bend is 150 km but the downstream part of the river on the opposite side is only separated by 16 km. Between that distance, there is an elevation drop of 310 m, creating an excellent situation for hydroelectricity production.
Two projects were planned for the bend, the Jinping I and Jinping II with a combined capacity of 8,400 MW. Planning for the projects began in the 1960s under the former Sichuan and Shanghai design institutes along with the Ministry of Water Resources and Electric Power. They produced the "Reinvestigation Report on The Yalong River bend (Jinping)". In July 1965, the Jinping Hydropower Engineering Headquarters was set up and designs for the Jinping 1 and Jinping 2 would progress with the East China Investigation and Design Instititute .