Untitled - Ministry of Power

Tehri Hydro Development Corporation
(THDC)
BACKGROUND
THDC, a Joint Venture Corporation of the Govt.
of India and Govt. of U.P., was incorporated as
a Limited Company under the Companies Act,
1956, in July’88, to develop, operate and maintain
the Tehri Hydro Power Complex and other Hydro
Projects.
THDC is presently responsible for the
implementation of the Tehri Hydro Power
Complex (2400 MW), comprising the following
components:
Tehri Dam & Hydro Power Plant (HPP) :
260.5 m high Rock Fill Dam (Stage-l of the
Complex), with 1000 MW underground Hydro
Power Plant having four conventional Turbine
Generator sets of 250 MW each (Stage-l of
the Complex); Koteshwar Hydro Electric
Project (HEP) : 97.5 m high Concrete Dam
and 400 MW Hydro Power Plant at
Koteshwar, 22 Km. downstream of Tehri.
Koteshwar Project is a run-off-river scheme
with minimum diurnal storage. The
Koteshwar Project will regulate water
releases from Tehri Reservoir for irrigation
purposes.
Tehri Pumped Storage Plant (PSP) :Tehri
PSP scheme having four reversible units of
250 MW each has been envisaged to
generate 1000 MW of peaking power for
enhancing system reliability and also to
provide balancing load to the thermal base
generation during off peak hours. The
reservoir created by the Tehri Dam would
function as upstream reservoir for this
Project, while the Koteshwar Dam reservoir
shall be the lower reservoir.
The Corporation has an authorised share capital
of Rs.3000 Cr. The cost of the Project is being
shared in the ratio of 75:25 (equity portion) by
Govt. of India & Govt. of U.P. for Power
Component, while the Irrigation Component (20
of Stage-l cost) is to be entirely funded by the
Govt. of U.P. The Govt. in March, 1994 approved
the implementation of Tehri Dam & HPP (1000
MW) as Stage-l of Tehri Power Complex; the
other components were to be implemented
subsequently as per the availability of resources.
The Tehri Stage-l is currently at an advanced
stage of commissioning.
The 400 MW Koteshwar HEP, was approved by
Govt. in April,2000 and the work is in progress.
Chapter - 21.8
The updated Detailed Project Report (DPR) for
Tehri PSP(1000 MW) has been prepared by
M/s EdF and M/s CoB , French Consultants
under French Aid. Based on the updated DPR,
the updated Cost Estimate prepared by THDC,
has been cleared by CEA. The proposal has
been recommended for PIB approval in the pre-
PIB meeting held on 10.10.2002. The PIB
approval is under process.
THDC and Government of Uttaranchal have
signed MoU for implementation of 340 MW
Vishnu Gad Pipalkoti Project on Alaknanda river.
MOEF/MOP has conveyed approval for taking
up stage-1 activities viz. Survey & Investigation
and preparation of Feasibility Report.
BENEFITS
The benefits from the Tehri Hydro Power
Complex are as under:
- Addition to the installed : 2400 MW
generating capacity in
the Northern Region
(1000 MW on completion
of Tehri Stage-l)
- Annual energy availability : 6200 MU
(Peaking) (3568 MU on
completion of Tehri Stage-l)
Irrigation (additional)
2.70 Lac. ha.
- Stabilisation of existing : 6.04 Lac. ha.
irrigation (besides above)
- 300 Cusecs (162 Million Gallons Per Day)
of drinking water for Delhi which will meet
the requirements of about 40 Lac. people.
- In addition, 200 Cusecs (108 Million Gallons
Per Day) of drinking water for towns and
villages of U.P. which will meet the
requirement of 30 Lac. people.
Integrated development of Garhwal region,
including construction of a new hill station town
with provision of all civic facilities; improved
communication, education, health, tourism,
development of horticulture, fisheries, and
afforestation of the region.
TEHRI DAM & HPP, STAGE-1 (1000 MW)
Tehri Dam Project is a multipurpose hydro Project
under construction on the river Bhagirathi in
Uttranchal State. Tehri Hydro Power Plant (Stagel)
includes the construction of the 260.5m high
rockfill Dam, spillway structures, power tunnels
and an underground power cavern with an installed
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