| Project Detail |
Suki Kinari Hydropower project is located in the Kaghan Valley in Mansehra District of the Khyber Kyber Pakhtunkwa Province of Pakistan. The valley extends for 155 km rising from an elevation of El 2134 m to its highest point, the Babusar Pass at El 4173 m. The region is alpine in geography and climate with forests and meadows dominating the landscape below peaks that reach over El 5200 m.
The valley is named after the main town of Kaghan. The area can be reached by road from Islamabad via Abbottabad, Mansehra , Balakot and lies on the old route from the plains of Punjab to Gilgit- Hunza and Baltistan.
The road from Balakot ascends along the Kunhar River through the villages of Paras, Shinu, Jared and Mahandri. The valley is somewhat narrow along this stretch. The road beyond Naran is open right up to Babusar Pass from the middle of July up to the end of September. Access is restricted during the high flow and winter seasons due to heavy rains and landslides.
Installed Capacity 870.250 MW
Net Capacity 861.548 MW
Annual Energy Generation 3050.438 GWh
Gross Head 912.5 m
Net Head 848 m
Design Discharge 114.6 m3/s
Plant Factor 40.20%
D&I Structure Type Asphalt Concrete Faced/core Rock-Fill
D&I Structure Height (above riverbed) 54.5 m
D&I Structure Crest 336 m
Reservoir Length 3106 m
Desander Type Twin Barrel, Underground
Headrace Tunnel Length 19.4 km
Headrace Tunnel Diameter 6 m
Penstock Number 4
Surge Shaft Type 2 No Double Stage x 3.0 m Diameter
Surge Shaft Diameter 770.85 m
Penstock Diameter 2.12 m
Length of Penstock (total of 4) 160 m
Powerhouse Type Underground Cavern
Turbine Type Pelton, 375 rpm
Turbine Number 4
Turbine Maximum Power 4 x 234.486 MW
Generator Number 4
Generator Rated Capacity 4 x 218.377 MW
Generator Voltage 18 kV
Transformer Type Single Phase
Transformer Secondary Voltage 500/v3 kV
Power Factor 0.8 lag, 0.9 lead
Transmission System Indoor GIS
Transmission Voltage 500 kV
Switchgear Type GIS - Breaker and a Half
Connection to outgoing transmission lines 500 kV GIL
Spillway Type Gated Spilway
Spillway Number 6
Spillway Type of Gates Radial
Tailrace Tunnels Number 2
Tailrace Tunnel Length 4.1 km
FOLLOWING ARE SOME OF THE MAJOR PROJECT COMPONENTS:
Diversion and Intake (D&I) Structure: A 54.5m high Asphalt Concrete Rockfill Dam with flexible concrete cutoff, two spillways, power intake and environmental flow release facilities.
Spillways: Two gated spillways, one lower spillway for sediment flushing and passing flood flows and one upper spillway for normal reservoir regulation
Intake and Headrace Tunnel: A 6.0m diameter headrace tunnel, about 19.4 km long (including Desander) leading to a surge chamber and twin vertical pressure shafts.
Desander/Desilting Basin: An underground twin barrel desander/desilting basin at the start of the headrace tunnel.
Power House: An underground power house , situated 4.1 km upstream of Paras.
Tailrace Tunnels: Twin tailrace tunnels D-shaped, 4.1 km long discharging the water back into the river.
Access Tunnel: A 4.1 km long access tunnel leading to power house
Roads & Bridges: Permanent diversion of the National Highway along the reservoir
Ancillary Works: Measures for control of frazil ice and construction of avalanche protection structures
Staff Colonies and Social Facilities.
Grid Station & Interconnection: Gas Insulated Switchgear (GIS) and interconnection facilities including switchyard works. |
