The Chongqing-Guizhou Back-to-Back Networking Project Has Entered the Final Stage of Steel Structure Hoisting at the Chongqing-Guizhou Converter Station

Rendering of the Chongqing-Guizhou Converter Station Project

Photo courtesy of State Grid Chongqing Electric Power Company

On July 3, the construction site of the Chongqing-Guizhou Back-to-Back Networking Project's Chongqing-Guizhou Converter Station was busy. On the north side of the station area, a 181-meter-long, 16.6-meter-wide, and 17.6-meter-high GIS distribution room building is gradually taking shape. With the on-site command personnel issuing the lifting instructions, a 20-meter-long, 5.8-ton steel column was smoothly lifted by a crane and accurately positioned at the designated installation point of the 500 kV GIS distribution room.

Construction Site of the Chongqing-Guizhou Converter Station

Photo by Li Shuxun

The Chongqing-Guizhou Converter Station is located in Longsheng Town, Qijiang District, Chongqing. It started construction on December 26, 2025, and is scheduled to be completed and put into operation in June 2027. At present, site leveling and pile foundation work have been fully completed, and the foundation construction of core areas such as the converter transformer and valve hall related to civil engineering has been extensively carried out. Among them, the total weight of the steel structure of the two GIS distribution rooms in the north and south of the station area is about 960 tons, and as of July 3, the construction progress has reached 95%.

Steel Structure Hoisting Site at the Chongqing-Guizhou Converter Station

Photo by Li Shuxun

After the completion of the Chongqing-Guizhou Back-to-Back Interconnection Project, it will open up the interconnection channel between the State Grid and the Southern Power Grid, greatly enhancing the ability of Chongqing and Guizhou to balance and complement each other's power supply and demand, and effectively supporting the high-quality economic and social development of the Chongqing-Guizhou region.