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Kakkad Hydro Electric Project

Brief History

Kakkad Hydro Electric Project (2x25MW=50MW)

The Kakkad Hydro Electric Project has been evolved as a second stage development of the potential of Pampa river basin and is basically a tail race development of the Sabarigiri project. The project was officially dedicated to the nation on 14.10.1999 by the honourable Chief Minister of Kerala, Sri. E.K. Nayanar. The project area is situated in the Pathanamthitta District of Kerala and is accessible by road from the District Head quarters via Vadasserikara, Chittar. The power house site is at Seethathode, 37 km away from District head quarters. The scheme utilises the tail water of Sabangiri Power Station together with the inflow from the two tributaries of Kakkad river, viz. Moozhiyar and Veluthode over a gross head of 132.6 m for power generation. After generation tail race water is fed to kakkad river. This water is used by private power projects like Ullunkal (EDCL), Maniyar(CUMI), Karikkayam (Ayyappa HEP) and KSEBL's Ranni-Perinad Power Project. There are two 110 kV feeders to Pathanamthitta 110 kV substation.

Salient Features

Location: Seethathode, Pathanamthitta

Category: Hydro Power Project

Capacity: 50 MW

River : Kakkad

Dam: Moozhiyar Dam and Veluthode Dam

Annual Energy Potential :262 MU

Generation per MCM: 0.3077 MU

Design Discharge through Machine: 26.38 m3/s

Design Head: 132.5 m

Design PLF (%) : 60


Features                                  Moozhiyar Reservoir                        Veluthode Reservoir  

Catchment Area                         0.1457 sqkm (0.056 sq mile)              0.0635 sqkm (0.0245 sq mile)

Gross Storage                            1.5 MCM                                           0.67 MCM        

Full Reservoir Level (FRL)            631.99 ft (192.63 m)                          629.92 ft (192 m)

Min. Draw Down Level (MDDL)     595.01 ft (181.36 m)                          610.24 ft (186 m)

Date of commissioning

Unit                             Rating                          Date of commissioning 

Unit -1                          25 MW                                   23.07.1999

Unit -2                          25 MW                                   02.09.1999



a) Type: Francis Vertical Shaft Turbine

b) Make: M/s. Bharat Heavy Electricals Ltd, Bhopal.

c) Design Net Head: 132.5 m

d) Rated output: 25.816 MW

e) Output Max./Min: 28.427 MW/23.661 MW

f) Normal Speed: 428.6 rpm

g) Runaway Speed: 785 rpm

h) Discharge through Machine: 26.38 m3/s


Features                                   Unit-1, Unit-2                                 

a) Type                                    HGT 410-110-14D

b) Make                                   M/s. Bharat Heavy Electricals Ltd, Bhopal

C) Rated Voltage (V):                 11000

d) Rated Output (kVA):               29412

e) Speed (rpm)                           428.6

f) Power factor:                          0.85

3. GENERATOR Transformers

Transformers #1 &#2

a) Type                                      SAOCR

b) Make                                     TELK

C) Rated Voltage (V):                  11000/110000

d) Rated Output (kVA):                33000

4. Power Evacuation

1. 110 kV Kakkad Maniyar Pathanamthitta feeder

2. 110 kV Kakkad Pathanamthitta feeder


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