Flash floods originating near the Nepal-China border on August 26, 2026, have disabled approximately 10% of Nepal's total electricity generation capacity. The disaster killed more than 1,300 people, prompting government officials and energy experts to call for a review of the nation's reliance on hydroelectric power. While the Nepal Electricity Authority (NEA) stated that domestic power supply remains adequate, the floods damaged 12 plants in the Trishuli River basin and destroyed several transmission lines.
The floods were triggered by a collapsed glacier and its bedrock, according to preliminary investigations. This event follows a series of similar disasters in the region, including a September 2024 cloudburst and a July 2025 glacial lake outburst that closed a Nepal-China border crossing for nearly six months. Historically, Nepal has transitioned from frequent power cuts in 2010 to achieving a 24-hour electricity supply by 2018.
The August 26 event crippled 281 megawatts (MW) of installed capacity and damaged another 388 MW currently under construction. Among the damaged facilities was the 42-year-old Devighat Hydroelectric Plant and a 25-MW solar plant. The Independent Power Producers' Association of Nepal (IPPAN) reported that between 639 and 983 workers are missing or out of contact. Former Energy Minister Kulman Ghising described the flood as a "once-in-a-century" event and emphasized the need for resilient designs, including underground powerhouses.
For individual citizens and businesses, the cost of electricity is expected to rise. The Electricity Regulatory Commission (ERC) and energy researchers estimate that implementing more resilient infrastructure will increase project costs by 10% to 12%. These additional costs are expected to be passed on to consumers who already face a 5% value-added tax on electricity as of mid-July 2026. The financial toll of the flood damage is estimated to be in the hundreds of billions of Nepali rupees.
The event sets a precedent for how Nepal and international lenders, including the Asian Development Bank and China's Export-Import Bank, evaluate high-altitude infrastructure projects. With the Himalayas warming faster than the global average, critics like Himanshu Thakkar of the South Asia Network on Dams, Rivers & People argue that lenders were aware of the risks but failed to demand sufficient safeguards. Moving forward, the NEA is considering a shift toward reservoir-based plants and diversifying the energy mix with solar power. Technical assessments of the damaged plants are ongoing, but no specific dates for restoration have been confirmed.