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Ranni Perinad Small Hydro Electric Project

Capacity - 2x2MW=4 MW

RanniPerinad Small Hydro Electric Project

Ranni-Perinad Small Hydro Electric project (RPSHEP) was built and owned by M/s.KSEBL is situated on the right bank of the Kakkad River which is a tributary of the Pamba River at Mampara in the Ranni-Perinad villages of the Pathanamthitta district. The project was commissioned on 16-02-2012. There is a weir of concrete-gravity type and is a part of RPSHEP which is a run-off river scheme in the Kakkad River in the Pamba basin. It envisages the development of power by utilizing the tail race water from the Maniyar Powerhouse. This is the last powerhouse in the train of the other five powerhouses upstream. The release of the water from the powerhouse/dam is to the Kakkad River which in turn flows and joins the Pamba River and flows through Taluks such as Ranni, Konni, Kozhencherry, Thiruvalla, Chengannur, Kuttanadu, Mavelikara, and Karthikappally. The Dam is also a part of the Ranni-Perinad Water supply scheme.

Salient Features

Location: Ranni- Perinad, Pathanamthitta

Category: Hydro Power Project

Capacity: 4 MW

River: Kakkad

Annual Energy Potential: 16.73 MU

Generation per MCM: 5.1 MU

Design Discharge through Machine: 39.17 m3/s

Design Head: 7.14 m

Design PLF (%): 48


Catchment Area                                       8.283 sqm (3.198 sq mile)

Gross Storage                                          0.95 MCM                                         

Full Reservoir Level (FRL)                          59.38 ft (18.1 m)

Min. Draw Down Level (MDDL)                  54.95 ft (16.75 m)

Date of commissioning

Unit                             Rating                          Date of Commissioning 

Unit -1                          2 MW                                   12.01.2012

Unit -2                          2 MW                                   03.01.2012



a) Type: Horizontal Shaft Tubular Turbine

b) Make: M/s. Kirloskar Brothers Ltd., Pune.

c) Design Net Head: 6.3 m

d) Rated output: 2 MW

e) Output Max./Min: 1.2 MW/0.8 MW

f) Normal Speed: 750 rpm

g) Runaway Speed: 1815 rpm

h) Discharge through Machine: 39.17 m3/s


Features                                  Unit-1, Unit-2                                 

a) Type                                     FRAME: G4/3.3/8/H              

b) Make                                    Crompton Greaves Ltd-Bhopal

C) Rated Voltage (V):                 3300

d) Rated Output (kVA):               2222

e) Speed (rpm)                           750

f) Power factor:                          0.9

3. GENERATOR Transformers

a) Type                                     Outdoor, ONAN

b) Make                                    Volt Amp Transformers Ltd

C) Rated Voltage (V):                 3300/1100

d) Rated Output (kVA):               5000

4. Power Evacuation

1. 11 kV Ranni Perinad Grid -1 Feeder

2. 11 kV Ranni Perinad Grid -2 Feeder


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