A devastating deluge along the Nepal-Tibet border has served as a stark warning regarding the stability of hydropower infrastructure in the Himalayas. The disaster, triggered by a combination of landslides and glacier collapse, resulted in significant casualties, including numerous hydropower workers, and wiped out approximately 10% of Nepal’s total power generation capacity. This event has intensified concerns among experts about the long-term viability of relying on mountain-based energy projects in an era of rapid climate change.
While governments across the region—including Nepal, India, China, and Bhutan—view mountain rivers as essential for meeting rising electricity demands and reducing fossil fuel dependence, the physical environment is becoming increasingly volatile. Warming temperatures are accelerating the melting of glaciers and permafrost, creating a heightened risk of chain-reaction disasters such as ice-rock avalanches, debris flows, and glacial lake outburst floods. These hazards pose a direct threat to the massive network of existing and planned dams that currently serve as a cornerstone of Asia’s clean-energy transition.
The Economic and Strategic Stakes
For Nepal, the impact of the recent flooding is particularly severe, with damages estimated at roughly 130 billion Nepali rupees, or $850 million. The destruction of approximately 20 projects in the Trishuli River basin has potentially delayed the country’s ambitious energy goals by up to six years. Despite this, the nation remains committed to its vision of becoming a regional “green battery,” with plans to increase generation capacity sixfold by 2035 to support electricity exports to neighbors like India and Bangladesh.
The broader Himalayan region remains a focal point for massive infrastructure investment, with over 40 gigawatts of capacity already operational and an additional 200 gigawatts in various stages of planning. Global Energy Monitor data indicates that China and India dominate this expansion, with China currently developing the Yarlung Tsangpo dam, which is set to become the world’s largest power plant. For these nations, hydropower is not merely an environmental policy but a strategic necessity for national energy security.
Adapting to a Dynamic Environment
The increasing frequency of extreme weather events is forcing a shift in how these projects are conceived and managed. Experts suggest that the traditional approach to dam construction, often based on historical climate data, is no longer sufficient for the current, more uncertain conditions. Future resilience may require significant design changes, such as moving powerhouses underground and installing advanced debris-prevention systems in tunnels.
These necessary adaptations are expected to drive up construction costs and influence the insurance market, as providers become increasingly cautious about the risks associated with high-altitude projects. While some policymakers have begun to emphasize the importance of locating critical infrastructure in lower-risk zones, the strategic importance of
