Dam Body
The main structure was constructed as a clay-core rockfill dam with a height of 147 metres above the thalweg, a crest length of 585 metres and a body volume of 23,000,000 m³.
Hydroelectric Energy Project
Kiğı Dam and Hydroelectric Power Plant is a comprehensive hydroelectric energy investment with a total installed capacity of 180 MW, developed to harness the energy potential of the Peri River in the mountainous terrain of Kiğı, Bingöl.
Comprising integrated engineering structures ranging from a clay-core rockfill dam and diversion and power tunnels to a vertical intake structure, surge shaft and pressure shaft, the facility generates electricity through three Francis turbine-generator units. Construction began in 2010, reservoir impoundment took place in 2015, and the facility was commissioned in 2017.
Technical Project Scope
Kiğı Dam and Hydroelectric Power Plant brings together large-scale engineering structures developed to store and convey water under controlled conditions and convert a 218-metre hydraulic head into electricity.
The main structure was constructed as a clay-core rockfill dam with a height of 147 metres above the thalweg, a crest length of 585 metres and a body volume of 23,000,000 m³.
The dam reservoir has a water storage capacity of 570 million m³. Located in an excavated section on the left bank, the radial-gated spillway provides the controlled discharge of floodwaters with a capacity of 4,500 m³/s.
Two diversion tunnels with an internal diameter of 5 metres and respective lengths of 1,278 metres and 1,385 metres were constructed to safely divert the Peri River during construction.
Water is drawn through a 76-metre-high vertical intake structure with a rectangular cross-section of 11.40 × 9.5 metres and conveyed into an 8,135-metre-long, concrete-lined horizontal power tunnel with a diameter of 5.5 metres.
Water from the conveyance tunnel is directed into a cylindrical surge shaft measuring 112 metres in height and 10 metres in internal diameter, before reaching the powerhouse through a 100-metre-high, concrete-lined vertical pressure shaft with an internal diameter of 5 metres.
Three Francis turbine-generator units housed in the powerhouse harness the Peri River’s 218-metre hydraulic head to generate electricity with a total installed capacity of 180 MW.
Engineering Approach
Kiğı Dam and Hydroelectric Power Plant is a comprehensive engineering project that integrates water storage, conveyance and power generation systems within the mountainous terrain of Bingöl.
Comprising the dam body, spillway, diversion tunnels, water intake structure, long power tunnel, surge shaft, vertical pressure shaft and power generation units, the system enables the reliable and efficient utilisation of the Peri River’s hydraulic potential.