Mumbai-based Patel Engineering, a civil construction company focused on hydropower, has won an order valued at Rs.1,564.42 crore for the Subansiri Lower hydropower project in Arunachal Pradesh.
In a stock exchange filing, Patel Engineering said that the contract relates to completion of balance civil works of the power house and head-race tunnel (HRT) intake structures.
The 2,000-mw Subansiri Lower hydropower project owned by Central PSU NHPC Ltd, by current thinking, will be the largest single-location hydropower project in India.
Coming up on the Subansiri River, the project is located at Kolaptukar village in Kamle district of Arunachal Pradesh. The Kamle district was formed in October 2017 by the carving out of three circles of the Lower Subansiri district.
“Patel Engineering has been able to get this project and even mobilize the same during this Covid-19 Pandemic,” the company said in the stock exchange filing.
As part of the Rs.1564.42-crore EPC order, Patel Engineering would be undertaking construction of the the following project components:
- Eight HRT intake structures
- Eight horseshoe shaped head race tunnels (of diameter 9.5m) with length varying from 610 m to 1170 m
- Eight circular steel-lined pressure shafts of diameter 8m
- Surface power house (285m x 61m x 64m) including control block and transformer hall cum GIS
- Tailrace channel of width 206m and length 35m joining to river
- Adits associated with underground structures
- Eight inclined surge tunnels of dia. 9.5m of length varying from 475m to 390m
- Eight vertical surge shafts (circular in shape, of 9.5m diameter) and with height varying from 10.5m to 12.5m
According to information available, the 2,000-mw Lower Subansiri Hydropower project, equipped with eight power units of 250-mw, is estimated to cost around Rs.20,500 crore. The project, which has been in the planning stage for nearly two decades, is expected to commission by August 2023. In a 90 per cent dependable year, annual electricity generation from the Subansiri Lower hydropower project is estimated at 7421 million kwh.
Featured image, sourced from NHPC, is a file photograph of the under-construction Subansiri Lower Hydropower project.
