Karakaya Hydropower Project

The most feasible solution was to lay penstocks near the river and convey the water to the turbines via this buried penstocks.
 

Project Information

Client: Sultanmurat Energy

Location: Trabzon

Status: In Progress

 

 

Key Features

Diversion Type

Installed Capacity 9 MW

Buried Penstocks

 

 

Summary

Karakaya HEPP is a diversion type hydroelectric power facility collecting water from two different branches via its tyrolean weirs at the high elevations of Degirmendere. There will be two separate pipelines carrying water from two weirs to the Pelton turbines at the powerhouse.

The project mainly consist of Karakaya Weir which takes water at elevation of 800 m on Bekçiler Creek, Haranoy Weir that is located on 800 m of Haranoy River, two penstock lines and a powerhouse that has two Pelton  Turbine units. The total length of penstock lines are 3 500 m. It is a spiral welded and buried steel pipe with diameters of 1.2 and 1.3 m.  

The project is located at a place where the settlement is dense. If the project was to be adopted with a classical formulation, a forebay or a surge tank and related access roads would have to be constructed. The negative environmental and social impacts of these constructions made a classical divergence type design impossible. The most feasible solution was to lay penstocks near the river and convey the water to the turbines via these buried penstocks. With this approach, the project has become applicable, the environmental and social impacts have been reduced to the least possible extent, the construction period is shortened and a considerable cost saving has been ensured.