Teesta - Ministry of Power

9
Preliminary Feasibility Report
Teesta (I) HE Project (4 x 80 MW)
Power Potential Studies. The design flood has been assessed as 1600 and 1300 cumecs
for dam-I and dam-II sites respectively.
1.3.3 Power Potential Studies
The computed inflow series for 22 years viz Jan 1976 to Dec 97 has been considered
in the assessment of a power benefits from the project. As per GOI notification for
tariff the year 1976-77 corresponds to 90% dependable year. An installation of
320MW comprising 4 generating units of 80MW has been proposed. The energy
availability from the project in a 90%dependable and an average year has been
summarized below:
Annual Energy Generation
Annual Energy Generation (GWh) 1298.12
Annual Load Factor (%) 46.31
Generation during Lean Flow Season
Energy Output (GWh) 164.59
Load Factor (%) 17.71
The design energy for tariff at 95% availability in a 90% dependable year has been
worked out at 1298.12 GWh.
A pondage of 2.82 mcum has been provided in the diversion dams, which would
enable the station to operate as peaking station. The pondage is equivalent to 3946.54
MWh which sufficient to operate the station for 3.23 hours.
1.3.4 Power Evacuation Aspects
The power generated from the project would be evacuated through 400KV, double
circuit lines to be connected at the pooling station which is assumed to come up near
Teesta-I HE Project to feed power to the power grid.
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