| Alchi Dam | |
| Location Map: | India Ladakh#India |
| Coordinates: | 34.2153°N 77.185°W |
| Status: | C |
| Construction Began: | September 2006 |
| Owner: | NHPC Limited |
| Dam Type: | Concrete-face rock-fill |
| Dam Height: | 570NaN0 |
| Dam Crosses: | Indus River |
| Spillway Count: | 5 |
| Spillway Type: | Blocks |
| Spillway Capacity: | 130NaN0 |
| Plant Hydraulic Head: | 3720NaN0 |
| Plant Name: | Nimoo Bazgo Hydroelectric Plant |
| Plant Operator: | NHPC Limited |
| Plant Commission: | Unit#3: Dec 2012, Unit#2: Jan 2013, Unit#1: June 2013 |
| Plant Turbines: | 3 x 15 MW Francis-type |
| Plant Capacity: | 45 MW |
The Nimoo Bazgo Power Project is a run-of-the-river power project on the Indus River situated at Alchi village, from Leh in the Indian Union Territory of Ladakh.[1] The project was conceived on 1 July 2001 and approved on 8 June 2005, and construction began on 23rd Sept, 2006. The project involved construction of a 57m (187feet) concrete dam with five spillway blocks of 13m (43feet) each having ogee profile. The dam is 247.9m in length.[1] It was officially completed and open in August 2014.[2]
The Nimoo Bazgo power plant was stated to utilise a rated net head of 34m (112feet) to generate 239.3GWh in a 90% dependable year. The project has three surface power units of 15MW each with a total installed capacity of 45MW.[2] Every unit has a 3.3m (10.8feet) diameter, each 63m (207feet) penstocks. Each operating unit is stated to of been designed for a discharge of 48.7m3/s and also have transformer yard and switch yard. The project was connected to the northern grid through a 220 kV transmission line from Leh to Srinagar. The dam diverts water from the Indus river by a 372m (1,220feet) long diversion channel and involves a flooding of only 3.42km2. Thus the power density is NaNMW/km2. The project was developed by National Hydroelectric Power Corporation (NHPC) Ltd.[2] Bharat Heavy Electricals Ltd. (BHEL) has executed the Electro-Mechanical works.
The project was conceived on 1 July 2001 and approved on 8 June 2005, and construction began on 23rd Sept, 2006.
The project required the removal and cutting of tens of thousands of tonnes of rock, diversion of the river flow, construction of the dam, powerhouse and reservoir.[1] The project required development of the mountain road network, as well as delivery of construction vehicles by aircraft to Leh.[1] The project was complicated by the difficult terrain and sub-zero mountain temperatures at some 3,500m above sea level.[1]
All the three units of the project have been successfully commissioned. The project was inaugurated on 12 August 2014 by the Prime Minister of India Narendra Modi, in a ceremony attended by senior officials including Chief Minister of Jammu & Kashmir Omar Abdullah, National Security Adviser Ajit Kumar Doval and others.[3] [2]
The project, along with the Chutak Hydroelectric Plant, was certified as compliant with the Indus Waters Treaty by the Indian Central Water Commission, with the project information passed over to Pakistan.[4]