Himalayan rivers face a hydropower surge | Science
In May 2023, India’s Forest Advisory Committee greenlit the controversial Etalin Hydropower Project, a significant initiative aimed at generating 3,097 megawatts (MW) of hydroelectric power. This ambitious project will involve the construction of dams on the Dri and Tangon rivers, leading to the diversion of water from an extensive area of 1,175 hectares of forest, which translates to the loss of approximately 278,000 trees. This decision reflects India’s growing need for energy security, as the country seeks to bolster its renewable energy sources amidst increasing demand. However, the project has raised significant environmental concerns, particularly regarding its impact on biodiversity and the livelihoods of local communities that depend on these vital water sources.
Adding to the complexity of the situation is China’s Lower Yarlung Tsangpo Hydropower Project, which began construction in July 2023. This project is poised to alter the water flow into India’s Brahmaputra River, further complicating the delicate ecological balance of the region. While hydropower is often lauded for its potential to provide clean energy and support the transition away from fossil fuels, the implications of such large-scale projects can be dire. The Himalayan rivers are not only crucial for sustaining diverse ecosystems but also play a pivotal role in the agricultural and economic activities of local populations. The environmental threats posed by these hydropower initiatives underscore the need for regional collaboration among South Asian nations to address the societal and ecological risks while ensuring energy security. By working together, countries can develop sustainable energy solutions that prioritize both ecological integrity and community well-being, thus fostering a more harmonious relationship between development and nature.
In May, India’s Forest Advisory Committee approved the Etalin Hydropower Project, which aims to generate 3097 MW of hydroelectric power to meet the country’s energy needs. This will require building dams on the Dri and Tangon rivers, which will divert water away from 1175 ha of forest (278,000 trees) (1, 2). Similarly, China’s Lower Yarlung Tsangpo Hydropower Project, which commenced in July, will affect water flow into India’s Brahmaputra River (3). Although hydropower can provide energy security and support the transition to clean energy, these and other Himalayan rivers are vital for biodiversity and for the livelihoods of local communities. Hydropower projects pose environmental threats. Regional collaboration could mitigate environmental and societal risks while safeguarding energy security.
