Name of the Project:                      17 MW Ranolia Hydropower Complex

Location:                                          Ranolia Khwar (District Kohistan), KP

Salient Features:

Hydrology

Catchment Area                              73 km²

Mean Annual Discharge                  4.33 m³/sec

Total Annual Flow                            136 million cubic meter

Diversion Dam

Type                                                 Low height concrete diversion weir

Crest Elevation                                1120.50 masl

Crest Length                                    20.0 m

Maximum height                              3.0 m from river bed level

Design Flood (Q100)                       854 m³/sec

Spillway

Type                                                 Overflow weir

Design Discharge (Q100)                854 m³/s

Intake & Headwork structures

Intake                                              Side intake –gate controlled

Approach canal                               Rectangular – reinforced concrete

Settling Basin / Sand trap                Reinforced concrete 75.5 m X 16.5 m

Headrace Canal

Length                                              2,650 m

Type                                                 Reinforced concrete

Dimensions                                      Rectangular, 2.5 m X 2.0 m

Bed slope                                         1:1000

Siphon with inlet and outlet ponds

Type                                                 Mild steel pipe, 1.5 m inner diameter

Length                                              830 m

Maximum head                                170 m

Penstock

Type                                                Mild steel

Length                                             684 m

Diameter / thickness                        1.50 m internal dia. 12 mm to 18 mm thickness

Power Facilities

Powerhouse Type                           Surface

Dimensions                                      28 m x 18 m

Gross Head                                     408.90 m

Net Head                                         404 m

Turbine (2 units)                              Pelton, 2 X 8.5 MW

Generators (2 units)                         Rated capacity 8.5MV x 2, Power factor 0.8

Transformers                                    Rated output 12.5, Voltage11/132 kV

Installed capacity                             17 MW

Average Energy                               100.5 GWh

Transmission Facilities:

Transmission line length                132 KV – about 2 Km and 11 KV about 4 Km

Objectives:                                     Adding cheap and clean energy into the system

Benefits:

Bulk and cheap energy supply into national grid. Source of revenue for PEDO and Govt of Khyber Khyber Pakhtunkhwa.

Resident Engineer Contact No and Email:

Engr. Syed Aziz Ahmad

Contact No. 0300-5875610

Email Address: aziz.ahmad@pedo.pk