Hydro power projects in Pakistan

Salient Features

Salient features of existing and proposed hydropower projects in Pakistan

DIAMER BASHA DAM PROJECT

GENERAL Government of Pakistan decided to construct 5 multi-purpose storages in the country during next 10-12 years. Diamer Basha Dam Project will be undertaken in the first phase. President of Pakistan performed the ground breaking ceremony of the project. Detailed engineering design of the dam and allied structures is completed and tender documents are ready. Prequalification of contractors has been started and contract for project implementation through five lots shall be advertised soon.

SALIENT FEATURES

• LOCATION 40 km downstream of Chilas

• MAIN DAM:

Maximum Height 272 m

Type Roller Compacted Concrete (RCC)

• DIVERSION SYSTEM 2 No. Diversion tunnels

1 No. Diversion channel

Upstream and Downstream Cofferdams

• MAIN SPILLWAY:

No. of gates 14

Size of gate 11.5 Χ 16.24 m

• RESERVOIR LEVEL 1160 m

Gross capacity 8.1 MAF (10.0 BCM)

Live capacity 6.4 MAF (7.9 BCM)

Min. operation level El. 1060 m

• OUTLETS:

Low level 2

Sluicing 5

• POWERHOUSE(S): 2

Total installed capacity 4500 MW

Location and type Two, one each under the right and left abutment

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Hydro power projects in Pakistan

Salient Features

No. of units 12 each of 375 MW

Average generation 18,000 Gwh/year

• ESTIMATED COST US$ 11.34 Billion

• EIRR 18.1%

• Benefit/Cost Ratio 2.49

TARBELA 4TH EXTENSION PROJECT

SALIENT FEATURES Location Tarbela Dam

Existing Installed Capacity 3470 MW

Tunnel-4 (Already constructed)

• Purpose Irrigation

• Type Concrete/Steel Lined

• Diameter 45 ft to 36 ft

• Length 2997 ft

Dam (Already constructed)

• Height 485 ft (147.82 m)

• Length 9000 ft (27434 m)

Spillway (Already constructed)

• 4th Extension estimated

Installed Capacity 960 MW

• Tentative Project Cost (Million US$) 500

LAWI HYDROPOWER PROJECT

LOCATION

The project area is located on the right bank of Shishi River, a left tributary of Chitral River. The project involves diversion of Shishi River into Chitral River. The Project is about 350 km from Islamabad.

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Hydro power projects in Pakistan

Salient Features

SALIENT FEATURES

Installed Capacity (MW) 70

Gross Head (m) 413

Design Discharge m3/sec 20

Mean Annual Energy (Mil. KWh) 303

No. & Type of Turbine 3 (Pelton)

Estimated Project Cost (MilUS$) 120

Implementation Period (Years) 4

MUNDA DAM MULTIPURPOSE PROJECT

LOCATION

This project is proposed to be constructed on Swat River about 5 Km upstream of Munda Head Work in Mohmand Agency (FATA), NWFP.

OBJECTIVES

i. Power Generation ii. Flood Control iii. Irrigation

SALIENT FEATURES

Type of Dam Concrete Faced Rock fill Dam

Height of Dam 698.820 Ft.

Gross Storage 1.290 MAF

Live Storage 0.676 MAF

Dead Storage 0.314 MAF

Flood Storage 0.081 MAF

Power Houses Installed Capacity (Peak) 740 MW (Annual Energy 2407 GWh)

Right Bank Culturable Command Area 15098 Acres

Left Bank Culturable Command Area 10057 Acres

Project Cost (Year 2000) Rs 57.450 Billion (US$ 1149 Million)

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Hydro power projects in Pakistan

Salient Features

Kala Bagh Dam

Salient Features:

1 The Main Reservoir of the Dam

Total Storage 7.9 MAF (9,750 million cu m)

Usable Storage

Dead Storage

6.1 MAF (7,550 million cu m)

1.8 MAF( 2,200 million cu m)

Retention Level El.915-ft above MSL (278.9 m)

Min Reservoir Level El.825-ft above MSL (251.5 m)

Area at Retention Level 105,000 acres ; (164 sq.m=425 sq. km)

3 Main Dam

Crest Elevation

Crest Width

El. 940-ft above MSL (286.5 m)

50 ft (15.2 m)

Max Height 260 ft (79.2)

Length

Length (overall)

4375 ft

11000 ft 3350 m)

4 Catchment Area of the Dam 110,500 sq. miles

5 Fill Volume

Main + Closure Embankments

Intake Embankments

Right Auxiliary Embankments

Guide Bunds, Cofferdams etc

5. million cu m

5.9 million cu m

4. million cu. m

10.5 million cu m

6. Overflow Spillway

Sill Level El. 860-ft above MSL (262.1 m)

No and size of radial gates 10 No. 50ft (15.2 m ) w x 55 ft (16.8m )

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Hydro power projects in Pakistan

Salient Features

PMF Discharge 0.98 million cusecs (1.07 million cusecs)

7. Project Cost

Based on Cost at June 1987 US $ 2.65 billion

Present Estimated Cost US $ 8-10 billion

8. Orifice Spillway

Sill level

No and size of radial gates

785 ft (239.3m) SPD

10 No. 38 ft (11.6 m) w x 22 ft

9.

10.

Convertible conduits

No & Size of Conduits

Average Length

Lining

No & Size of gates

Upstream bulkhead

Upstream radial

Downstream radial

4-36 ft (11 m) diameter

940 ft (286.5 m)

Steel with concrete encasement

1-36 ft (11 m) w x 36 ft (11m)

4-36 ft (11 m) w x 36 ft (11m)

2-35 ft (10.7m) w x 36 ft (11m)

11. Power Facilities

No and size of intake gates

Upstream bulkhead 2-36 ft (11m) w x 36 ft (11m)

8-36 ft (11m) w x 36 ft (11m)

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Hydro power projects in Pakistan

Salient Features

Upstream radial

12. Penstocks

Size and average length

Lining

36 ft (11m) diameter, 850 ft

Steel with concrete encasement

13 Power Station

Type

No. of Units

Installed Capacity

Turbines, design head

Generators, nominal/maximum rating

Indoor

8 (initial); 12 (ultimate)

2400 MW (initial); 3600 MW (ultimate)

Francis Type, 170 ft (51.8m)

13.1 Irrigation Benefits

Increase in future annual irrigation supplies (Average)

4.5 MAF (5.500 million Cum)

13.2 Energy generation

At KBD

Extra at Tarbela

Total

Power Available (initial eight units)

11413 million kWh

236 million kWh

11749 kWh

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Hydro power projects in Pakistan

Salient Features

13.3 Max Power

Dependable Power

2776 MW

1463 MW

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