The Longdong-Shandong Project starts from the Qingyang Converter Station in Qingyang City, Gansu Province, traverses five provinces—Gansu, Shanxi, Shangxi, Hebei, and Shandong—and ends at the Dongping Converter Station in Taian City, Shandong Province, with a transmission distance of 915 kilometers and a total investment of 20.2 billion yuan. The project achieves cross-regional optimization of energy resources, alleviates the contradiction between energy shortages in North China and the resource abundance in western regions, and holds significant importance for promoting energy transition and facilitating coordinated regional development.
This major power transmission artery is the first external delivery project for China’s first large-scale integrated “wind, solar, thermal, and storage” comprehensive energy base, the first ultra-high-voltage direct current (UHVDC) project to achieve full-capacity commissioning in a single phase, the first demonstration project to explore and apply the standardized achievements of the “dual 800” (i.e., ±800 kV rated voltage and 8 million kW rated capacity) UHVDC, and the first demonstration project to break through UHV “bottleneck” technology by applying the results of the national “1025” special research initiative.
The project received national approval in February 2023 and commenced construction in June of the same year. The Longdong-Shandong project includes 14.5 million kilowatts of supporting power sources, with 10.5 million kilowatts from renewable energy. For the first time, it incorporates 1.05 million kilowatts of energy storage at the sending end base, enabling bundled transmission of wind, solar, and thermal power. This configuration facilitates multi-energy complementarity and effectively enhances the utilization level of renewable energy.
The project’s completion and operation will strongly support the comprehensive development of Gansu’s energy base, ensuring reliable transmission of over 10 million kilowatts of new energy capacity and helping Gansu transform its abundant resource advantages into economic benefits. Additionally, the project can deliver 36 billion kilowatt-hours of electricity to Shandong annually, increasing the regional power import capacity to 38 million kilowatts, with new energy accounting for over 50%. This ensures safe and green energy use in Shandong and meets peak summer electricity demand.