Wedoany.com Report-Dec.30, State Grid announced on December 30 that construction has commenced on the Inner Mongolia West - Beijing-Tianjin-Hebei ±800 kV Ultra-High Voltage Direct Current (UHVDC) transmission project. Upon completion and operation, the project will further support the development and utilization of Inner Mongolia's "sand, Gobi, and desert" new energy base, injecting more green momentum into the coordinated development of the Beijing-Tianjin-Hebei region.

The Inner Mongolia West - Beijing-Tianjin-Hebei project starts from the Dalat converter station in Ordos, Inner Mongolia, and ends at the Xiongnan converter station in Cangzhou, Hebei, passing through three provinces (autonomous regions): Inner Mongolia, Shanxi, and Hebei. The transmission line spans approximately 700 kilometers, with a rated voltage of ±800 kV, a rated capacity of 8,000 MW, and a total investment of about 17.2 billion yuan. It is scheduled for completion and commissioning in 2027. The project is the first to adopt the "double 800" (±800 kV, 8,000 MW) UHVDC hybrid transmission technology, which can better adapt to the transmission and consumption needs of large-scale new energy bases and effectively ensure the security of the main power grid.

Inner Mongolia is a national important energy and strategic resource base. As Inner Mongolia's first outbound transmission channel for a "sand, Gobi, and desert" new energy base, the Inner Mongolia West - Beijing-Tianjin-Hebei project can deliver new energy with an installed capacity of up to 12,000 MW from the Kubuqi Desert to the load center in North China. It will help Inner Mongolia form a "four AC, four DC" UHVDC outbound transmission pattern with a total outbound capacity exceeding 50,000 MW.

As the first UHVDC project to be located in Hebei, upon completion, the Inner Mongolia West - Beijing-Tianjin-Hebei project can transmit over 36 billion kWh of electricity annually to the load center in Hebei, replacing 6.3 million tons of standard coal and reducing carbon dioxide emissions by 16.6 million tons.