| Introduction : |
| |
|
The Lachen HE Project envisages utilization of the waters of the river Teesta for power generation on a run of river type development, harnessing a head of about 360 m by constructing a dam, at Downstream of confluence of Zemu Chu and Teesta River. |
| |
| |
| SALIENT FEATURES : |
| |
| |
Location |
Near village Zema chu in North Sikkim District of Sikkim |
| |
Approach |
Nearest Rail Head- New Jalpai Guri (208 Km) Nearest Airport- Bagdogra (210 Km) |
| |
Capacity |
210 MW (3 x 70 MW) |
| |
Annual Generation |
866 MUs (in a 90% dependable year) |
| |
Project Cost |
Rs.1046.93 Crores (June 2003 Price Level)(Subject ot TEC) |
| |
Beneficiary States |
To be decided |
| |
Year of Commissioning/Completion Schedule |
5 years from the date of Investment sanction by Govt. of India |
| |
| |
| TECHNICAL FEATURES : |
| |
| |
Diversion Structure : |
85 m high from deepest foundation level, Concrete Gravity Dam |
| |
Water Conductor System : |
6.0m dia 4.5 km long Horseshoe shaped Head Race |
| |
Surge Shaft : |
15m dia, 75m high restricted orifice type |
| |
Pressure shaft : |
3.75m dia, 415m long Circular shaped bifurcating into three nos. Penstocks |
| |
Power house : |
Underground, with 3 units of 70 MW each, Vertical Francis Turbine |
| |
Tail Race Structure : |
6m dia., 400m long Horseshoe shaped Tail Race Tunnel |
| |
(Project components are tentative and may get revised) |
| |
|
|
