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December 15, 2021

Bunakha, Bhutan

By Carmen

Bunakha is an 180MW hydro power project. It is planned on Wangchu river/basin in Chukha, Bhutan. The project is currently in permitting stage. It will be developed in single phase. Post completion of the construction, the project is expected to get commissioned in 2023.

Project Type Total Capacity (MW) Active Capacity (MW) Pipeline Capacity (MW) Project Status Project Location Project Developer
Hydropower 180 180 Permitting Chukha, Bhutan Druk Green Power; THDC India

Description

The project is being developed and currently owned by Druk Green Power and THDC India. The owners have 50% stake in the project respectively.

Bunakha is a reservoir based project. The hydro reservoir capacity is planned to be 211.3 million cubic meter. The gross head and net head of the project will be 164m and 141.62m respectively. The total number of penstocks, pipes or long channels that carry water down from the hydroelectric reservoir to the turbines inside the actual power station, is expected to be 3 in number. The penstock length will be 300m. The penstock diameter will be 3.5m. The project is expected to generate 688 GWh of electricity. The project cost is expected to be around $475.558m.

The hydro power project consists of 3 turbines, each with 60MW nameplate capacity.

The project will have 3 electric generators installed at the project site. The generator capacity is likely to be 66.67 MVA.

Development Status

Post completion of the construction, the project is expected to get commissioned in 2023.

About Druk Green Power

Druk Green Power Corporation Ltd (Duke Green) is a energy company that develops, promotes and manages the renewable energy projects. The company formed through amalgamation of the Basochhu, Chhukha, Kurichhu hydro power corporations, and others. It is responsible for the developing and promoting the new hydropower stations. Duke Green is involved in both upgrade of existing plants and construction of new projects. The company also engaged in the infrastructure works such as bridges and roads for the 118 MW Nikachhu project. It provides functions such as site investigations, preparing design and engineering, structuring projects, contracting, and others. The company operates with four subsidiary companies Bhutan Hydropower Services Ltd, Dagachhu Hydro Power Corp, Kholongchhu Hydro Energy Ltd, and Tangsibji Hydro Energy Ltd. Duke Green is headquartered in Thimphu, Bhutan.

About THDC India

THDC India Ltd (THDCIL) formerly Tehri Hydro Development Corporation Ltd, subsidiary of NTPC Limited, is a renewable energy corporation that operates, develops, and maintains hydroelectric projects. The corporation offers services such as power project development and operation, corporate and project planning, construction management, design engineering, erection and commissioning, contracts management, project management, human resource management, financial management, and commercial management. Its projects include Tehri Dam and HPP, Patan Wind Power Project and Dhukwan SHP, among others. The corporation has its operations in Rishikesh and Tehri, India. THDCIL is headquartered in Rishikesh, Uttarakhand, India.

Methodology

All power projects included in this report are drawn from GlobalData’s Power Intelligence Center. The information regarding the project parameters is sourced through secondary information sources such as electric utilities, equipment manufacturers, developers, project proponent’s – news, deals and financial reporting, regulatory body, associations, government planning reports and publications. Wherever needed the information is further validated through primary from various stakeholders across the power value chain and professionals from leading players within the power sector.

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