Gozeler Hydropower Project

Gözeler - I HEPP, Gözeler - II HEPP and Gözeler - III HEPP are run-of-river type hydroelectric facilities which will be constructed over the Murat River
 

Project Information

Client: Kalehan Energy

Location: Bingöl

Status: In Progress

 

 

Key Features


Installed Capacity 190 MW 

 

Summary

Gözeler – I HEPP, Gözeler – II HEPP and Gözeler – III HEPP are run-of-the river type hydroelectric facilities which will be constructed over the Murat River. They are placed from upstream to downstream as Gözeler – I HEPP, Gözeler – II HEPP and Gözeler – III HEPP respectively and the planning studies are ongoing.

At the upstream of these projects, Lower Kaleköy Dam, Upper Kaleköy Dam, Alpaslan – II Dam and Alpaslan – I Dam are located. From these projects, only Alpaslan – I Dam is in operation. At the downstream of Gözeler Projects, Beyhan – I Dam, Beyhan – II Dam and Keban Dam are located. Keban Dam is in operation.

Although there are several reservoirs in the upstream, because of the excessive flood potential of Murat River, spillway design discharges will be also very big. The fill body of the projects planned in the formerly feasibility report, were changed by Prosem Engineering and designed as RCC (Roller Compacted Concrete) body. By this means the spillway design discharges were reduced from probable maximum flood (9162 m3/s) to Q500 (4200 m3/s). Spillway design discharges were determined according to memorandum of State Hydraulic Works (DSİ).

By taking the advantage of the long axis and the downstream and upstream project belonging to Kalehan Energy also, the spillways of these projects were designed as uncontrolled. Thus, there will be no need of dozens of spillway gates.

Since the low head and high flow characteristics of these projects, Bulb turbines were preferred. The streambed levels at the downstream of the projects have been lowered up to 8 – 10 m resulting in a drop in the tailwater levels. In this way, the amount of agricultural lands laying under water is reduced and the negative social effects and expropriation costs are minimized. 

Alakopru Dam and Hydropower Project

Alaköprü Project consist of a multiple-purpose reservoir having an active storage of 86.5 hm³ being responsible for potable water demand of Northern Cyprus, irrigation demands and energy production.
 

Project Information

Client: Boyut Group Energy

Location: Mersin

Status: In Progress 

 

Key Features

Installed Capacity 32 MW

Multi-purpose Reservoir

Energy Tunnel

 

Summary

Alaköprü HEPP is located in Southwest Region within the border of Anamur district of Mersin province over the creek of Dragon. Powerhouse is adjacent to the Alaköprü Dam has a catchment area of 210 km2 along this river and diverts water to Alaköprü HEPP.

 

Alaköprü Project consists of a multiple-purpose reservoir having an active storage of 86.5 hm³ being responsible for potable water demand of Northern Cyprus, irrigation demands and energy production. Dam diverts the water via 260 m long energy tunnel to the branch where the water demands of the project divert. Prosem Engineering’s scope was to design the energy purpose of the project. Reservoir simulation was carried out in order to determine the optimum turbine capacities and to define the operation rules in order to maximize energy revenues while ensuring the non-energy purposes of the project. Revised feasibility report was prepared as a result of the process and electromechanical equipment contractual works started accordingly. Although the final designs for the energy tunnel were complete and were not in the scope of Prosem Engineering, the rock cover confinement requirements for the tunnel were re-evaluated and it was concluded to elongate the length of steel lining.

 

 

Aydinlik Hydropower Project

By this way, high cost of the dam body as well as the unwanted social and environmental effects of this dam is eliminated.
 

Project Information

Client: Odabaşı - Bal Electricity

Location: Batman

Status: In Progress

 

Key Features

Installed Capacity 49 MW

Cascade Diversion Type

Project Formulation

Daily Pondage 

 

Summary

Aydınlık HEPP is a diversion type cascade hydroelectric facility that has been planned to use the potential between 1050 m and 800 m of Aydınlık Creek. The project is already in the planning stage. In the former feasibility report, Aydınlık HEPP project was composed of two hydropower plants and one dam. In this case, the project had a lot of adverse social and environmental effects and also the cost of the project was very high. Therefore, to minimize these effects and to improve the project economy, a new project formulation was developed by Prosem Engineering.

According to this new formulation, Aydınlık HEPP consists of three cascade diversion type projects. Instead of the big reservoir storage proposed in the former solution, projects are planned to have daily pondage. By this way, high cost of the dam body as well as the unwanted social and environmental effects of this dam is eliminated.

 

Guneslik Hydropower Project

In the former feasibility report Güneşlik HEPP project consisted of two hydropower plants and one dam.
 

Project Information

Client: Odabaşı - Bal Electricity

Location: Batman

Status: In Progress

 

 

Key Features

Installed Capacity 34 MW

 

 

Summary

Güneşlik HEPP is a diversion type hydroelectric facility that has been planned to use the potential between 770 m and 666 m of Aydınlık Creek. Project is already in the planning stage.

In the former feasibility report Güneşlik HEPP project consisted of two hydropower plants and one dam. In this case, the project had a lot of adverse social and environmental effects and also the cost of the project was very high. Therefore, to minimize these effects and improve the project economy a new project formulation was developed by Prosem Engineering.

According to this new formulation, Güneşlik HEPP consists of one diversion weir, 19.4 km long trapezoidal conveyance channel, headpond, penstock and powerhouse. But, in this new formulation instead of the big reservoir storage, projects are planned to have daily pondage. By this way, the high cost of the dam body and the negative social and environmental effects of this dam are eliminated.

 

Gumusoren - Obrucak - Sureyyabey

The detailed cost analyses have been conducted for the projects and the risk assessment has been made.
 

Project Information

Client: Boyut Group Energy

Status: In Progress

 

Key Features

Installed Capacity 22 MW

 

 

Summary

Prosem Engineering has provided consultancy services for Boyut Group Energy for 3 DSI projects whose energy facilities will be privatized. The projects with a total installed power of 27.5 MW are under construction in Kayseri, Kastamonu and Çorum provinces.

The projects are under construction in the responsibility of State Hydraulic Works (DSI). The energy facilities of the projects will be privatized.

 Within the context of consultancy, hydrological calculations of the projects have been restudied according the most up-to-date data and the hydraulic results have been checked. In this respect, power potential and energy production capacity have been recalculated. Also, electromechanics and issues associated with system connections have been investigated. Moreover, the detailed cost analyses have been conducted for the projects and a risk assessment has been made. The project evaluation reports covering field observations and all studies conducted have been presented to the firm. Boyut Group Energy will make their decision about the projects according to these due diligence reports.

 

Hasanlar Dam and Hydropower Project

Hasanlar Dam is a clay core rockfill type dam and the height from thalweg is about 70.80 m.
 

Project Information

Client: Batıçim Energy

Location: Düzce

Status: Completed

 

Key Features

Clay core rockfill type

Installed Capacity 9 MW

 

 

Summary

Hasanlar HEPP is located on Küçük Melen Creek. Hasanlar Dam was constructed and started to operate in 1974. The powerhouse was constructed and started to operate in 1991. In 2012, Batıçim Energy obtained the right to the Hasanlar HEPP operation and will hold it for 50 years.

Hasanlar Dam is a clay core rockfill type dam and the height from thalweg is about 70.80 m. Hasanlar Dam has 2 spillways at the same location. The one with more capacity is at 267.36 m in crest elevation. Its type is uncontrolled. The maximum water level of the dam is 271.30 m. The smaller spillway is located at the same axis with the greater one, but the elevation is lower. Smaller spillway is uncontrolled orifice type and is at 255.50 m crest elevation. Total capacity of these two spillways is 1440 m3/s.

Hasanlar HEPP Project is not a new Project; it has been in operation about 22 years. Therefore some maintenance, renewal etc. may be required. Prosem Engineering has investigated the project and designated the necessary works to do. In accordance with these studies, Prosem Engineering gave some suggestions to improve the project’s feasibility.

 

 

Hizir Hydropower Project

The project is designed to have the least negative effect on the environment.
 

Project Information

Client: Özyılmaz Energy

Location: Artvin

Status: In Progress

 

 

Key Features

Diversion type

Installed Capacity 2 MW

Aboveground structures

 

 

Summary

Hızır Weir & HEPP is a diversion type hydropower project in Eastern Blacksea Region within Borçka district of Artvin province over Çosedinara Creek between the elevations of 1285 m and 1101 m.

Hızır HEPP project is a very small hydro project and placed very near to a natural park. Therefore, the project is designed to have the least negative effect on the environment.

The structures aboveground are; a small capacity diversion weir and a powerhouse. The waterline is designed as a long penstock, thus the need of a conveyance channel, a forebay and their access roads are eradicated. The penstock length is 1590 m and the whole line is buried underground.

The aboveground structures are designed to have the minimum dimension also enabling the technical requirement.

 

 

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.

 

 

Elmali Hydropower Project

The long free flow conveyance channel in the original design was replaced by a pressurized GRP pipeline near riverbed in order to reduce construction costs, expropriation and to shorten construction duration.
 

Project Information

Client: Bergün Electricity

Location: Erzurum

Status: In Progress

 

 

Key Features

Diversion type

Installed Capacity 10 MW

Pressurized GRP Pipeline

 

 

Summary

Elmalı HEPP is a diversion type hydropower project located in the Eastern Anatolia Region within the border of Erzurum province over the Serçeme Creek. Elmalı HEPP makes use of the head between 1988 m and 1905 m.

The project is located downstream of Kuzgun Dam & HEPP with a seasonal storage capacity. The long free flow conveyance channel in the original design was replaced by a pressurized GRP pipeline near riverbed in order to reduce construction costs, expropriation and to shorten construction duration. Although the optimum design discharge of Elmalı HEPP (16.5 m³/s) was determined to be less than design discharge of Kuzgun HEPP (23 m³/s), the excess water released by Kuzgun HEPP during peak hours was effectively stored in the Elmalı Weir reservoir thus resulting in an economically more feasible project.

 

 

Melikom Hydropower Project

The project mainly consists of weir structures, 3600 m long penstock, a powerhouse and a 700 m long tailwater canal.
 

Project Information

Client: Rinerji

Location: Rize

Status: In Progress

 

Key Features

Diversion Type

Installed Capacity 11 MW


 

 

 

Summary

Melikom HEPP is a diversion type hydropower facility which makes use of the head between 127 m and 58 m of Büyükdere Creek.

The project mainly consists of weir structures, 3600 m long penstock, a powerhouse and a 700 m long tailwater canal. The system having the storage capacity of 34 000 mbehind the weir structure will fulfill the daily regulation with two equal capacity Francis type turbines.

 

Boydak Energy Projects

Within the context of consultancy, hydrological calculations of the projects has been restudied according the most up-to-date data and hydraulic results have been controlled.
 

Project Information

Client: Boydak Energy

Status: Completed

 

Key Features

Installed Capacity 700 MW

Due Diligence for Acquisition

 

Summary

Prosem Engineering has provided consultancy services for Boydak Energy for various projects with a total installed capacity of 480 MW whose 490 MW is the private sector projects while the remaining 3.55 MW part is within the scope of the privatization.

In this respect, power potential and energy production capacity have been recalculated. Also, electromechanics and issues associated with system connections have been investigated. Moreover, the detailed cost analyses have been conducted for the projects in order to ensure consistency with the current investment programs, and a risk assessment has been made. The project evaluation reports covering all studies conducted and field observations have been presented to the firm. Relying on these reports, Boydak Energy has joined to a private sector project undertaken by Nisan Elektromekanik Enerji and Muradiye Elektrik Üretim. which has a total installed capacity of 160 MW. Apart from private sector projects, evaluation of the current situation of the projects undertaken due to privatization has been conducted and required revisions have been determined by Prosem Engineering.

 

Sedef Hydropower Project

There will be two separate pipelines carrying water from two weirs to the Pelton turbines at the powerhouse.
 

Project Information

Client: Elif Group Energy

Location: Bursa

Status: In Progress

 

 

Key Features

Diversion Type

Installed Capacity 5 MW

Buried Penstocks

 

 

Summary

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

The project mainly consist of Sedef-1 Weir which takes water at elevation of 557 m on Akçay Creek, Sedef-2 Weir which is located on 870 m of Güvercinlik Creek, two penstock lines and a powerhouse that has two Pelton  Turbine units. The total length of penstock lines is 3 720 m. It is a spiral welded and buried steel pipe with the diameters of 0.7 and 0.9 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 reconstructed. 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 to 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.

 

 

Selcuk Hydropower Project

It is a compact diversion type hydropower project due to its formulation.
 

Project Information

Client: Elif Group Energy

Location: Bursa

Status: In Progress 

 

Summary

Selçuk HEPP is a diversion type hydropower facility which makes use of the head between 883 m and 680 m of Deliçay Creek. The construction of the project will begin in 2014.

The project mainly consists of weir structures, 2 165 m long buried steel penstock and a powerhouse. It is a compact diversion type hydropower project due to its formulation. Since there is no aboveground conveyance structure or a head pond, the project is a conservative energy facility.

 

Key Features

Diversion Type

Installed Capacity 5 MW

Buried Steel Penstocks

Conservative Energy Facility

Akin Hydropower Project

Two equal power Francis type units, by means of the advantage of having daily tanks in the projects, can be used without energy loss.
 

Project Information

Client: Güngör Energy

Location: Giresun

Status: Completed

 

Key Features

Diversion Type

Total Installed Capacity 18 MW

Disk-shaped Headpond

Long Tunnel

 

Summary

Akın HES Project is a diversion type hydroelectric power station which evaluates Ahırlı Creek’s (Pazarsuyu) head level between the altitudes of 655 m and 550 m. Assignments of planning, optimization and formulation as well as the financial analysis of the project are prepared by Prosem Engineering.

Akın HES makes use of the energy potential of Ahırlı Creek’s head level between the altitudes of 655 m and 550 m . The currents which are converted by a regulator structure will be transmitted to the head pond through 2470m long and 5m in calibre transmission tunnel. The topography of the region, where the forebay is to be built, is highly inclined. Therefore, the head pond is planned as disk shaped and its diameter is determined to be 15.00m. In this project, the transmission tunnel is designed to be used as a daily tank and a significant benefit is procured due to the long length of the tunnel. Two equal power Francis type units, by means of the advantage of having daily tanks in the projects, can be used without energy loss.

 

Cokek Hydropower Project

The most critical point of the project is the fact that some parts of the project are located in an area that is announced as a disaster area by the Provincial Disaster and Emergency Directorate.
 

Project Information

Client: Batıçim Energy

Location: Muğla

Status: Completed

 

 

Key Features

Total Installed Capacity 11 MW

Project Hydrology

Hydraulic Calculations


 

 

Summary

Prosem Engineering gave consultancy services to Batıçim Energy for Çökek HEPP project. The project is located between 845 m and 360 m elevations of Tezli Creek.

In the original formulation, the project consisted of two parts as Çökek-1 and Çökek-2 Projects.  

Within the context of the consultancy services, the project hydrology was studied, hydraulic calculations were executed, project costs, installed capacities and energy production values were calculated and different alternatives were compared. The most critical point of the project is the fact that some parts of the project are located in an area that is announced as a disaster area by the Provincial Disaster and Emergency Directorate. Detailed site investigations are made in cooperation with academicians and experts and the due diligence reports presenting the possible risks and alternative solutions are prepared according to these studies.

 

Bingol - 2 Hydropower Project

Bingöl – 2 is located in a very high seismicity area of Turkey with a peak ground acceleration estimated around 0.5 g, close to the vicinity of faults
 

Project Information

Client: Odabaşı - Bal Electricity

Location: Bingöl

Status: In Progress 

 

Key Features

Diversion Type

Total Installed Capacity 27 MW

Reinforced Concrete Steel Cylinder Pipe (RCCP) 

 

Summary

Bingöl - 2 HEPP is a diversion type hydropower facility which makes use of the head between 1 180 m and 1 095 m of Göynük Stream. The construction of the project commenced in 2012 and the HEPP is going to be in commercial activity in 2014.

Bingöl – 2 is located in a very high seismicity area of Turkey with a peak ground acceleration estimated around 0.5 g, close to the vicinity of faults. In the original design, 12 km long trapezoidal channel located in slopes was planned. Prosem Engineering investigated the site area and consulted specialists; consequently the former design was replaced with a buried and pressurized reinforced concrete steel cylinder pipe (RCCP) with the diameter of 4.1 m near the river in order to eliminate the risk of slope stability failures which might have been triggered by an earthquake event. The RCCP was chosen to Steel, HDPE and GRP alternatives because of its lower cost and in situ fabrication eliminating hauling expenses. The weir was moved downstream in order to increase the active storage which increased peak energy production; also this resulted in a shorter length of conveyance around 8 km.

 

 

Kezer Hydropower Project

In order to maximize the energy generation, the highest possible head is achieved by keeping the operating water level same as the flood level with the help of a gate-controlled-spillway.
 

Project Information

Client: Odabaşı - Bal Electricity

Location: Siirt

Status: In Progress

 

 

Key Features

Diversion Type

Total Installed Capacity 13 MW

Gate-controlled-spillway

Headpond

Three Seperate Penstocks

 

 

Summary

Kezer HEPP is a diversion type project located in Siirt province. The potential between 577 m and 532 m of Kezer Creek will be converted to electricity with the help of a weir, an 8.7 km long channel, a head pond, penstock and a powerhouse.

Kezer HEPP makes use of the head between 577 m and 532 m of Kezer Creek for energy generation. At the upstream of the project, there exists Şirvan Dam and HEPP, which is under construction. The energy potential calculations are carried out considering this facility.

In order to maximize the energy generation, the highest possible head is achieved by keeping the operating water level same as the flood level with the help of a gate-controlled-spillway.

Kezer Creek waters are diverted into an 8.7 km long trapezoidal channel. At the end of the channel water is regulated at the head pond and guided into three penstocks. Penstocks are connected to three Francis type turbines inside the powerhouse. An optimization study considering several factors such as the cost, transportation, installation etc. is executed to determine whether a single penstock or three separate penstocks are more feasible and it was decided to be designed as three separate penstocks.

 

 

Demirci Hydropower Project

Demirci Weir is founded on a deep permeable soil in order to prevent excessive leakage.
 

Project Information

Client: Asa Energy

Location: Rize

Status: Completed

 

 

Key Features

Diversion Type

Installed Capacity 13 MW

Jet Grout Columns

Semi Indoor Type Powerhouse


 

 

Summary

Demirci HEPP is a diversion type hydropower project located in Black Sea Region within the border of Kastamonu province over the Gökırmak. The construction of the project started in September 2012 and the project is expected to be finished and to start operating in 2014.

Demirci HEPP is located on Gökırmak- an important branch of Kızılırmak. There are several regulating projects at the upstream of the project.

Demirci HEPP project is composed of a diversion weir, a 21 km long trapezoidal channel, a forebay with a reservoir, a 450 m long penstock and a powerhouse.

Demirci Weir is founded on a deep permeable soil and in order to prevent excessive leakage, jet grout columns are designed under the weir. Since the project has a long channel, about 25 flood passes are designed along this line in order to protect the channel. The forebay of Demirci HEPP project is designed to have 30 000 m3 active storage for daily regulation. By means of this design, low regimes of flow are stored at the forebay and can be turbined at peak hours. Due to unfavorable geological conditions at the site, the powerhouse is designed to be installed over reinforced concrete piles. The semi indoor type powerhouse have three equal capacity horizontal axis Francis turbines

 

 

 

Ceviz Hydropower Project

As a result of the formulation studies committed by Prosem, the project was converted to a single project with one weir, a pressurized conveyance system and a powerhouse.
 

Project Information

Client: Arsan Construction

Location: Eskişehir

Status: In Progress 

 

Key Features

Diversion Type

Total Installed Capacity 4 MW

GRP Pipeline

Pressurized Conveyance System

 

Summary

Ceviz HEPP is a diversion type hydropower project located over the Gürleyik Creek within the borders of Eskişehir province. The project will use the head between 582 and 470 m elevations releasing tailwater to Sarıyar Dam reservoir which is under operation since 1956.

Ceviz HEPP is located between the altitudes of 582 m and 470 m of Gürleyik Creek. In earlier studies, the project was composed of two parts as Ceviz-1 Weir&HEPP and Ceviz-2 Weir&HEPP. In this formulation, there were two weirs, long conveyance lines, two head ponds, penstocks, and two power plants. As a result of the formulation studies committed by Prosem, the project was converted to a single project with one weir, a pressurized conveyance system and a powerhouse.

In the final formulation, the project is composed of a 12 m high weir to ensure daily regulation, 3.6 km pressurized GRP pipeline and a powerhouse.

The penstock of the project is designed to be constructed with GRP pipes and near to the powerhouse, a standpipe will be installed in order to limit the pressure rise in the penstock. There will be two sets of Francis turbines inside the powerhouse.