The Shuakhevi Hydropower Project is the first scheme of the Adjaristsqali hydro power cascade. The project has been constructed in Shuakhevi and Khulo municipalities with an overall installed capacity of 187 MW (comprising of 178 MW plant at Shuakhevi and a small 9.8 MW plant on Skhalta River). The Shuakhevi scheme is comprised of two dams with reservoirs and one weir on the Adjaristsqali, Skhalta and Chirukhistskali Rivers.

The water is diverted from the Chirukhistskali River to the Skhalta valley via a transfer tunnel. A small reservoir with approximate maximum capacity of 748,000 m3 with a surface area of 117,000 m2and an 18m high rock-fill barrage have been constructed on the Skhalta river. A small powerhouse (9 MW) is also constructed on the Skhalta dam using the water being transferred from Chirukhistskali River. In order to transfer water from Skhalta Valley to the Adjaristsqali river valley, a 9.3 km long x 5.2 m diameter transfer tunnel has been constructed from between Skhalta and Didachara.

Didachara dam and a reservoir are located just downstream of the confluence of the Adjaristsqali and Ghorjomi rivers. The dam is a 52 Mtr high concrete dam with maximum reservoir capacity is 998,000 m3 with a surface area of 152,500 m2. The headrace intake structure is on the right bank. Transfer of the water to the Shuakhevi powerhouse is achieved through a 17.8 km long x 6.2 m diameter main headrace tunnel. In total, the Shuakhevi Hydropower Project is comprising of about 37.7 km of tunnels and 11 tunnel Construction Adits.

Shuakhevi power plant is located on the right bank of the Adjaristsqali river in the Shuakhevi municipality. Two Generator units with Francis type turbines have been installed, with installed capacity of 89.3 MW each.On the right side of the power plant, a 220 KV voltage substation has been constructed, through which the power generation from Shuakhevi HPP is fed into the Georgian National Electricity grid using 220 KV Batumi-Akhaltsikhe transmission lines. 

All major construction activities pertaining to the 178 MW Shuakhevi HPP were completed in July 2017 and commissioning activities were commenced in early August 2017. While the plant was ready for commercial operations, certain abnormalities were noticed first in the Transfer Tunnel between Skhalta and Didachara and later in the main Head Race Tunnel, commercial operations of the Shuakhevi Plant was stopped and the tunnels were de-watered for investigation. A detailed investigation programme was commenced with  extensive rock sample testing for establishing appropriate remedial and restoration works. The same have progressed well and it is envisaged that the tunnel repair works shall be completed by the end of the third quarter of 2019 for recommencing commercial operations immediately thereafter. 

Project Technical Data
Project Components Key Parameters
Chirukhi Weir Concrete gravity weir with 2 Radial Gates for Flood Management; Height – 7 m; Reservoir – Diversion weir; storage Nil
Diversion Tunnel Tunnel length – 6.3 km; Tunnel diameter – 4.2 m; Capacity - 10 m3/s.
Skhalta Powerhouse HPP type – underground; Installed capacity – 9 MW; Turbine type – Francis; Number of turbines 3 units (3 x 3 MW).
Skhalta Dam and Reservoir Weir type - Rockfill dam with concrete core; Weir height - 17 m; Reservoir type - daily regulation.
Skhalta-Didachara Diversion Tunnel Tunnel length - 9.2 km; Tunnel diameter- 5.2 m; Capacity - 25 m3/s.
Didachara Dam and Reservoir Dam type - Concrete dam; Dam height - 55 m; Reservoir type - daily regulation.
Didachara-Shuakhevi Headrace Tunnel Tunnel length - 17.8 km; Tunnel diameter - 6.2 m; Capacity - 48 m³/s.
Shuakhevi Powerhouse HPP type - Surface; Installed capacity - 178 MW; Water flow - 48 m3/s; Turbine type- Francis; Number of turbines - 2 units (2 x 87.5 MW).

Project Map

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    Adjaristsqali Georgia LLC is a special purpose vehicle set up to develop the hydropower resources on the Adjaristsqali River and its tributaries, in the Autonomous Republic of Adjara, in South Western Georgia. AGL is a joint venture between India’s Tata Power and Norway's Clean Energy Invest, and IFC, a member of the World Bank Group. IFC has supported the project since its early development, through IFC InfraVentures, which is an early stage project developer launched by IFC.


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