Himalayan rivers face a hydropower surge | Science
In May 2023, India’s Forest Advisory Committee greenlit the controversial Etalin Hydropower Project, which is set to generate a staggering 3,097 megawatts of hydroelectric power. This ambitious project will involve the construction of dams on the Dri and Tangon rivers, resulting in significant environmental implications as it will necessitate the diversion of water from approximately 1,175 hectares of forest, leading to the loss of around 278,000 trees. The Etalin project is part of India’s broader strategy to enhance energy security and transition to cleaner energy sources, reflecting the country’s growing demand for sustainable power solutions amid rising energy needs.
However, the approval of such large-scale hydropower initiatives raises critical concerns regarding their environmental impact, particularly in the ecologically sensitive Himalayan region. The Himalayan rivers are not only crucial for biodiversity but also serve as lifelines for local communities, providing water for agriculture, drinking, and sustaining various ecosystems. In a parallel development, China’s Lower Yarlung Tsangpo Hydropower Project, which began construction in July 2023, poses additional threats by potentially altering the water flow into India’s Brahmaputra River, further complicating the regional water dynamics. Experts argue that while hydropower can play a pivotal role in reducing carbon emissions and bolstering energy independence, the environmental and societal risks associated with such projects cannot be overlooked.
To address these challenges, regional collaboration is essential. By fostering partnerships between India, China, and neighboring countries, stakeholders can work towards mitigating the environmental threats posed by hydropower projects while ensuring that energy security is maintained. Initiatives that prioritize sustainable practices and consider the ecological and social ramifications of energy projects could pave the way for a more balanced approach to development in the Himalayas. As the demand for renewable energy continues to rise, it is crucial to find a harmonious balance that protects the environment and supports the livelihoods of local communities.
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.
