Lingza - Ministry of Power

v) Teesta Stage-V
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Preliminary Feasibility Report
Lingza HE Project (3 x 40 MW)
A diversion dam has been proposed d/s of confluence of Dikchu chu and Teesta river and
a power house near the village Sherwani. The scheme shall have installed capacity of 510
MW.
vi)Teesta Stage-VI
Power Potential of Rangit Basin It envisages construction of a 76 m high concrete dam
near Khanitar d/s of the confluence of the Teesta and Rongni chu in East Sikkim and the
power house near the village Namthang/Tarkhola in South Sikkim with installed capacity
of 360 MW.
Rangit Basin
The hydropower development of Rangit river was identified in four stages as under :
i) Rangit HE Project Stage –I
The Rathong chu, a major perennial tributary of Rangit river has a very steep bad slop.
The river takes a big loop near Yoksum. It is proposed to divert the water of Rathong chu
at an elevation of about 2300 m U/S of Yoksum to elevation of 100 m near village
Thingtom. The scheme shall generate 47 MW of power at 60 % load factor.
ii) Rangit HE Project Stage-II
It is proposed to divert the water of Rimbhi chu near Sigglitem and allow the water to
drop through 425 m near Lingchum on Kalet chu to generate 10 MW of power at 60%
load factor.
iii) Rangit HE Project Stage –III
A dam has been constructed just d/s of confluence of Rathong chu and Rangit river and a
power house near the village Mongbru. The installed capacity of the scheme is 60 MW.
The project has been commissioned by NHPC in the year 1999 and is in operation.
iv) Rangit HE Project Stage-IV
The scheme shall utilize a drop of 110 m from an elevation of 440 m to 355 m in Reshi
loop. The scheme shall generate 18 MW of power at 60 % load factor.