Punatsangchhu-I Hydroelectric Project Authority (PHPA-I) is an autonomous body set up for implementation of 1,200 MW Punatsangchhu-I Hydroelectric Project (PHEP-I), the mutually beneficial Indo-Bhutan friendship Project. The project implementation started on November 11, 2008.

Rising at an altitude of ±7,000 masl in Gasa Dzongkhag (District) of Bhutan and fed by snow/glacial lakes from the Great Himalayan Range, the rivers Phochhu and Mochhu join at an altitude of ±1,200 masl at Punakha to form the Punatsangchhu river which flows southerly to enter the Indian plains.

Confluence of Phochhu and Mochhu river near Punakha Dzong

Confluence of Phochhu and Mochhu rivers near Punakha Dzong

The (1,200 MW) run-of-the-river PHEP-I in Wangduephodrang Dzongkhag in Western Bhutan is the first project of the 10,000 MW Hydro-power Development Initiative taken by the Royal Government of Bhutan (RGoB) and the Government of India (GoI) to be achieved by 2020. Designed to generate 5,670 million units of electricity in an average year, the Project utilizes 357 m head available in about 11 km length of Punatsangchhu. The Dam site is about 7 km downstream of Wangdue Bridge and all other project components are located on the left bank of the river between 7 km and 17 km downstream of the  Wangdue Bridge.

News Update A 3-dayRimdro (Puja)held at Dam site


Considering the amount of dam excavations being carried out and its impacts on the natural and spiritual environment, the PHPA-I has coordinated and performed a 3-day Rimdro or Puja in order to appease the local deities and ward off misfortunes coming in the way of project’s smooth progress and successful commissioning. The Rimdro was held from Feb. 28 to Mar. 2, 2019 in keeping with the advice of His Holiness The Je Khen Rinpoche and the National Astrologer.

The Rimdro was presided over by His Eminence Yonten Lopen Rinpoche of the Zhung Dratshang (Central Monastic Body) along with 30 monks. The Rimdro mainly consisted of Sadhag Thrugchoed and Recitation of Bum (Sutras), amongst others. The project management and the employees participated keenly in the religious event. Also, considering the auspicious day on Feb. 28, 2019 for installation of Sachhu Bumters (Treasure Vases), HE Yonten Lopen installed two sacred Vases in the Dam pit (Block No. 3) where one of the Vases was donated by HE given the importance of the project to the nation.

Hon’ble Tengye Lyonpo and Chairman of the Project, His Excellency Loknath Sharma, also attended the Rimdro and offered prayers for smooth progress, successful and early commissioning of the project.

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