Lower Subansari Dam of assam

Lower Subansari Dam of Assam

NHPC Limited is a Govt. of India Enterprise and was incorporated under the companies act, 1956 in November of the year 1975. NHPC Limited is in full form National Hydroelectric Power Corporation. It was incorporated in the year 1975 with an initial authorised share capital of Rs. 200 crores for Hydro Power development in central sector. Later on NHPC expanded its objects to include other sources of energy like Geothermal, Tidal, Wind etc. Initially, following 3 projects under execution by Central Hydroelectric Control Board were entrusted to NHPC:

–        Loktak (105 MW), Manipur

–        Baira Siul (180 MW), H.P.

–        Salal –I (345 MW), J&K

The present authorised share capital of the corporation is about Rs. 15000 crores with 14 power stations (5,295 MW) under operation & 10 projects (4,502 MW) under various stages of construction. NHPC is a ‘MINI RATNA’, “Schedule A” Company 86.4% owned by government of India.

Now the NHPC Limited is working on a mega dam Project on river Subansiri in the border area of Arunachal Pradesh and Assam. This Lower Subansari Dam of 2,000 Mega-Watt is in under construction. The 116 m concrete gravity dam measured from the river bed is on the river Subansari in India.The surface powerhouse will contain 8 units of Francis turbines of 250 MW each. When constructed it will be the largest hydroelectric project in India. This project is scheduled to be completed by approx 2012.

“Lower Subansari Dam” Project Back Ground

•         Investigation of Subansiri Dam Project were initiated in the year 1955. However, detailed investigations started since 1976.

•         Brahmaputra Board submitted the Feasibility Report in April 1983.

•         Agencies involved in investigations were CWC, GSI, BFCC, CSMRS, NEHARI & CWPRS.

•         A 257m high Rockfill dam was envisaged at the proposed site in the Feasibility Report which was subsequently reduced to 116m high dam.

•         Project was transferred to NHPC in May 2000, along with investigations details by Brahmaputra Board.

•         NHPC retained the same site for the dam as proposed by Brahmaputra Board and submitted DPR in June, 2001.

According to the office source the project work started in January 2005 after obtaining all statutory and mandatory clearances from concerned bodies of Government of India and NOC from Govt. of Assam and Govt. of Arunachal Pradesh.