Lingza - Ministry of Power

14
Preliminary Feasibility Report
Lingza HE Project (3 x 40 MW)
The objective of the system development is to evolve self-sufficient regional grid catering
to the individual regional power demands. It is also aimed at achieving the maximum
benefits from integrated operation, through a proper mix of thermal and hydro generation
and ultimately to tie the five regional grids together to form a strong National Power
Gird, providing even greater reliability.
The proposed Lingza Hydro electric project located in north Sikkim is envisaged to feed
power at a pooling point near Teesta III H.E. Project (Approx 2 Km from Teesta-III) via
one double circuit line.
2.2.2 Power Position in North Sikkim Region.
The total installed capacity in Eastern Region is 16696.68 MW.Out of this only 2459.51
MW is hydel installation. Thus the Hydro-thermal mix is 15:85, which is well below the
national average of 25:75 and desirable ratio of 40:60.
The power supply position for Eastern region during 10 th and 11 th Five Year Plans is
summarised in Table2.1. The power and energy availability and requirements during and
after 10 th Plan period in the Eastern Region is shown in Tables as projected in the 16 th
Electric Power Survey, published by CEA.
Even considering the coordinated operation of existing hydro and thermal stations, as
well as benefits from ongoing projects and also from the schemes cleared by CEA, the
Eastern region is expected to face peak power and energy deficits during most of the 10 th
five Year Plan. The power situation in the region is dynamic and it is expected that the
power generated from this project shall be cheap and helpful to the region as compared to
thermal and other expensive power in the region.