COMPLETED PROJECTSIRRIGATION, DAM, ENERGY PROJECTS Go Back
AKKÖY II DAM & HEPP (ALADEREÇAM DAM, GÖKÇEBEL DAM AND YAŞMAKLI DAM HEPP)
Employer: Akköy Energy Co. Inc.
Location: Gümüşhane / Turkey
Completion Date: 9/3/2013
Aladereçam, Gökçebel and Yaşmaklı Dams exist within the scope of Akköy II Project. Generation of power will be realized at Akköy II Hydroelectric Power Plant. Aladereçam Dam is located at 1,843 m crest and 1,792 m talweg elevation on Karaovacik Brook. Water from Aladereçam Dam is diverted to Gökçebel Dam reservoir through a transmission tunnel having 4,077 m length and 3.20 m inner diameter. Furthermore, a hydroelectric power plant with an installed capacity of 7 MW, utilizing 210 m head of water to be diverted to Gökçebel Dam reservoir from Aladereçam Dam, has been constructed in addition to the power generation at Akköy II HEPP. The power generation of that power plant will be 18.200.000 kWh. 

Gökçebel Dam is a rockfill dam at a height of 144 m, with a concrete face. Gökçebel Dam Reservoir is estimated as 94.78 million m3 water holding capacity. This dam is linked to Yaşmaklı Dam reservoir via a tunnel at a length of 6,650 m and an inner diameter of 4 m. Yaşmaklı Dam is a concrete gravity dam at a crest elevation of 1,630 m and a thalweg elevation of 1,530 m and a height of 100 m. The dam has a water-holding capacity of 17.68 million m3. Water is channeled from here to a surge tank via a tunnel at a length of 4,002 m and a diameter of 3.20 m, and from there to Akköy II Hydroelectric Power Plant, which is the adjacent structure to Akköy I Hydroelectric Power Plant via a penstock at a length of 3,424 m and a diameter of 2.70 m. The penstock is a unique structure with a drop head of 1,224 m. The power plant shall operate with two Pelton type turbines, and be completed with two vertical axis synchronous generators. 872.5 million kWh energy shall be generated in Akköy II.