Köprü Dam and HEPP
The Köprü Dam and Hydroelectric Power Plant were built on the Göksu River, a tributary of the Seyhan River, in Adana province in southern Türkiye.
It is a 1,000,000 m3 roller-compacted-concrete (RCC) gravity dam, 109 meters tall from the foundation, 100 meters tall from the riverbed, and has a crest length of 413 meters, including an integral conventional spillway with discharge capacity of 5,300 m3/s. The river water diversion has a 470-meter long tunnel with an excavated diameter of 11 meters. It is further lined with reinforced concrete to an internal diameter of 9.5 meters. The concrete-lined powerhouse, furnished with 2 turbine-generator units rated at 72.5 MW each, reaches a capacity of 145 MW in total. The project includes also a 154 kV switchyard, and an 8-kilometer long, 154 kV transmission line, to supply the locally generated power to the national grid.
The project started in 2009 and was completed in 2014. The site was fully commissioned in 2015. It is owned and operated by Enerjisa Company.