Tajikistan Supercharges Iconic Nurek Dam to Power through winter and beyond
Tajikistan’s monumental Nurek hydroelectric dam — the world’s second-tallest — is undergoing a sweeping modernization drive to secure the country’s electricity supply ahead of the harsh winter months. Rising 300 meters above the Vakhsh River near the Afghan border, the dam has been the backbone of Tajikistan’s power grid since its completion in 1980, supplying about 70% of the nation’s electricity.
As energy demand peaks with the onset of winter, engineers at the 3,015 MW hydropower plant are racing to upgrade aging turbines and infrastructure. The long-term overhaul aims not only to ensure uninterrupted power during the cold season but also to expand Nurek’s generating capacity and extend the lifespan of a national landmark that has powered Tajikistan for nearly half a century.
A Soviet-Era Marvel Reimagined
When completed in 1980, Nurek was the tallest dam in the world — a feat of Soviet engineering that created a vast 98 km² reservoir storing over 10.5 billion cubic meters of water. Its nine original hydro turbines provided a design capacity of about 2,700 MW, later boosted to just over 3,000 MW. Beyond electricity, the dam’s reservoir supports major irrigation networks across the Amu Darya basin, including the Dangara tunnel system that irrigates roughly 70,000 hectares of farmland.
For Tajikistan — a mountainous nation of 10.8 million people — Nurek remains an economic lifeline. Hydropower provides 98% of its electricity, one of the highest renewable energy shares in the world. Yet after five decades of continuous service, the dam’s machinery showed signs of fatigue, leading to frequent winter power shortages in the 2010s when river flows dropped and heating needs surged. Modernization became essential to prevent a recurrence of those energy crises and to meet rising domestic demand.
Revamping a Giant
Supported by the World Bank and the Asian Infrastructure Investment Bank (AIIB), the Nurek rehabilitation is unfolding in phases. Phase I, covering four of the dam’s nine generating units plus major safety upgrades, is on track for completion by the end of 2026. Phase II will restore the remaining units. Each is being fitted with high-efficiency Francis turbines that increase capacity from 335 MW to 375 MW.
The first modernized unit came online in October 2022, delivering 10% more power. By August 2024, four upgraded units had rejoined the grid. Work is now underway on a seventh turbine, with construction carefully staggered to keep the plant largely operational. Once all nine units are refurbished, Nurek’s total capacity will rise from 3,015 MW to approximately 3,375 MW — effectively adding the output of a mid-sized power plant without building a new dam.
According to Deputy Chief Engineer Anvar Kiromoddinov, the upgrades are designed to “ensure the country’s energy supply during the challenging winter months” and provide “high-quality, reliable electricity.”
Beyond turbine replacement, the project includes strengthening the dam’s structure, overhauling spillway gates, and installing state-of-the-art monitoring systems to detect seismic shifts or water seepage. Outdated Soviet control systems are being replaced with modern automation, vastly improving safety and efficiency.
Powering Growth and Regional Connectivity
Reliable electricity during winter has direct benefits for households and industries alike. Consistent power means homes can rely on electric heating instead of wood or coal, and factories, hospitals, and schools can operate without backup generators. The modernization is expected to support Tajikistan’s economic growth and enhance living standards, particularly in remote regions.
With surplus hydropower available in summer, Tajikistan could also expand electricity exports to neighbors such as Afghanistan and Pakistan through the CASA-1000 transmission project, or help stabilize the Unified Energy System of Central Asia, which it is preparing to reconnect to alongside Uzbekistan.
Nurek’s rehabilitation has become a symbol of both national pride and regional cooperation. Once a jewel of Soviet Tajikistan, it now stands as a beacon of 21st-century resilience — proof that modernization and sustainability can go hand in hand.
Upstream, construction of the Rogun Dam — set to surpass Nurek as the world’s tallest — reflects Tajikistan’s continued push toward energy independence and leadership in renewable power. Once a source of regional tension, water and energy projects like Nurek and Rogun are increasingly fostering collaboration among Central Asian states.
As another winter approaches, the hum of Nurek’s rejuvenated turbines signals more than just electricity generation. It represents stability, progress, and the promise of a brighter, better-connected future for Tajikistan and the wider region.
