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TEHRI PUMPED STORAGE PLANT
Introduction

TEHRI PUMPED STORAGE PLANT (1000 MW)

 

1.0             BACKGROUND

 

Tehri PSP comprising of four reversible pump turbine units of 250 MW each, involves construction of an Underground Machine Hall on the left bank of river Bhagirathi.  The main feature of the Project is the large variation of about 90 m between the maximum and minimum head, under which the reversible units shall operate. The operation of Tehri PSP is based on the concept of recycling of water discharged between upper reservoir to lower reservoir. The Tehri Dam reservoir shall function as the upper reservoir and Koteshwar reservoir as the lower balancing reservoir. On completion, additional generating capacity of 1000 MW, peaking power, will be added to the Northern Region (annual generation of 1268 million units).   

 

For pumping operation of reversible units during off-peak hours, the energy requirement will be of the order of 1712 MU limited to maximum of 1000 MW during off-peak hours. With the construction of Tehri PSP, Tehri Hydro power Complex shall function as a major peaking station having an installed capacity of 2400 MW.

 

2.0             PROJECT APPROVAL

 

Govt. of India approved the execution of Pumped Storage Plant (4X250 MW) in July-2006, at a cost of Rs.1657.60 cr. including IDC of Rs. 81.64 cr. at Dec.’05 price level with debt equity ratio of 70:30.

 

3.0            REVISED COST ESTIMATE

CCEA has approved Revised Cost Estimate (RCE) of the Project amounting to Rs 2978.86 Cr including IDC of Rs. 405.04 Cr at Apr-10 PL in Nov’11 with scheduled completion of the Project by Feb, 2016.