⚡Upper Tamakoshi Hydropower Project || पहिलो बर्षमा अप्पर तामाकोशीको सफलता || National Pride project

Описание: Upper Tamakoshi Hydropower Project || पहिलो बर्षमा अप्पर तामाकोशीको सफलता || National Pride projects Nepal 2022

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The Upper Tamakoshi Hydroelectric Project is a 456 MW peaking run-of-the-river hydroelectric project in Nepal. It is the largest hydroelectric project in Nepal and is completed in 2021. It]s sited on the Tamakoshi River (also spelled Tamba Koshi), a tributary of the Sun Kosi river (also spelled Sunkoshi), near the Nepal–Tibet border.

The Upper Tamakoshi Hydroelectric Project is a Nepal national priority project. Till date, it is the largest hydroelectric plant in Nepal, with a power output equivalent to two-thirds of Nepal's current power generation. The Project is entirely financed by domestic financial institutions and companies.

Financing and organization
Nepal Electricity Authority (NEA) has established an autonomous company named Upper Tamakoshi Hydropower Limited (UTKHPL) in March 2007 (2063/11/25 B.S.) as an executing agency for the implementation of the Project. There are six full-time and two invitee members in the Board of Directors (BoD) at present. Out of six full-time members, four members from NEA, one from the Employees Provident Fund (EPF) and one from Nepal Telecom (NTC) are representing in the BoD. Similarly, representatives of Citizen Investment Trust (CIT) and Rashtriya Beema Sansthan (RBS) are also in the BoD as invitee members.

The majority share (51%) of the Company is held by four public entities, namely, Nepal Electricity Authority (NEA), Nepal Telecom (NTC), Citizen Investment Trust (CIT), and Rashtriya Beema Sansthan (RBS). NEA has a 41% stake, NTC has 6% and CIT & RBS each has a 2% stake in the Company. Similarly, the general public and residents of Dolakha District will have a 15% and 10% share respectively. The remaining 24% share will be taken over by contributors in Employees Provident Fund (EPF), NEA & Company's staffs, and staffs of financial institutions providing loans.

Upper Tamakoshi Access Tunnel
Construction began in February 2011, and the project was originally slated for completion in July 2018, later pushed back to December 2018, and again pushed back to November 2019. And finally from July 15, 2021 begins it's operation.

The Nepalese Army was mobilized to provide security to the site in 2012 after it was reportedly threatened by vandalism and threats to construction staff and foreign workers. Work was disrupted by the April 2015 Nepal earthquake, after which over 200 Chinese workers were evacuated. Work was disrupted throughout the construction project by labor strikes. The earthquake also caused damage to roads and bridges and buried the troop barracks at the site.

In May 2018, it was reported that the planned July completion date could be jeopardized by the late assembly of the turbomachinery that had been delivered to the site. Later in May, the country's finance minister said that the project was expected to contribute to robust national economic growth in 2018.

Installation of penstocks began in February 2019 by a European contractor after the original Indian contractor failed to perform the work. A new date of November 2019 was set for initial energy production.

The project was put on hold prior to the completion of its testing and commissioning phase in 2020 when skilled foreign workers became unavailable in Nepal due to the global COVID-19 epidemic.

Infrastructure
Infrastructure for the plant includes a 142 m long, 25 m high underground powerhouse hall near Gongar Khola, with six Pelton wheels; a 22 m high × 60 m wide dam at Lamabagar; a 360 m high surge shaft; and a total of 16 km of headrace and tailrace tunnels. The gross head will be 822 m. Near the dam are two 246 m × 26 m settling basins to remove particles greater than 0.15 mm.

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