Gansu Section of Ultra-High-Voltage Power Line to Zhejiang Completed

The Gansu section of the Gansu-Zhejiang ±800-kilovolt ultra-high-voltage direct-current transmission line has been fully connected following the completion of stringing across the Yellow River, according to state media reports. Spanning 2,370 kilometers from Wuwei in Gansu to Shaoxing in Zhejiang, the cross-regional power corridor is designed to transmit more than 36 billion kilowatt-hours of electricity annually once fully operational in 2027, with clean power accounting for over 21.2 billion kilowatt-hours.

The engineering milestone clears the most technically demanding bottleneck along the entire 2,370-kilometer route. Once operational, the corridor will provide an essential link between the vast wind and solar installations across northwestern desert basins and the industrial load centers of coastal Zhejiang, reinforcing regional grid reliability while advancing China's clean-energy transition targets.

Construction teams have fully connected the Gansu section of the Gansu-Zhejiang ±800-kilovolt ultra-high-voltage direct-current transmission project following the successful completion of wire stringing across the Yellow River, according to reports published by People's Daily. The final four-bundle conductor was positioned at the boundary between Jingtai and Jingyuan counties in Baiyin, Gansu province. The river span represents the sole Yellow River crossing along the entire route and was considered the critical path milestone for the Gansu provincial segment. According to State Grid Gansu Electric Power Company, the Yellow River section presented severe environmental and engineering challenges, including rugged terrain and high-velocity winds sweeping through the river canyon. Construction crews erected four new steel transmission towers and implemented an independent tension section spanning 2.731 kilometers to negotiate the crossing while meeting strict precision and safety standards. The Gansu-Zhejiang transmission line is a key priority within China's national power development planning. Stretching 2,370 kilometers, the line originates at the Wuwei converter station in Gansu and terminates at the Shaoxing converter station in Zhejiang, traversing six provincial-level administrative divisions: Gansu, Ningxia, Shaanxi, Henan, Anhui, and Zhejiang. The line is scheduled to enter commercial service in 2027. Once commissioned, the infrastructure is projected to deliver over 36 billion kilowatt-hours of electricity annually from western energy reserves to eastern coastal manufacturing centers. Renewable energy sources are expected to account for more than 21.2 billion kilowatt-hours of that total annual throughput, supporting carbon emission reduction goals and balanced regional economic development.