Recently, GEDI signed a contract for the ±800 kV ultra-high-voltage direct current transmission project from southeastern Tibet to the Guangdong-Hong Kong-Macao Greater Bay Area (Tibet-Guangdong UHVDC Project).

The project is the world's first 10 GW UHV flexible DC transmission project from a large new energy base. It is also the UHV multi-terminal flexible DC transmission project with the world's largest capacity and the UHV flexible DC transmission project with the world's longest transmission line. The project line starts in the southeastern region of Tibet and ends in the Guangdong-Hong Kong-Macao Greater Bay Area, with a voltage level of ±800 kV and a rated transmission capacity of 10 GW. The line passes through the four provinces and regions of Tibet, Yunnan, Guangxi, and Guangdong, with a total length of approximately 2,681.3 kilometers. GEDI will be responsible for the survey and design work of a ±800 kV flexible DC converter station, a deep well grounding electrode, approximately 415.6 kilometers of DC lines, and 87 kilometers of grounding electrode lines for the project.

It is a major demonstration project ensuring the sustainable development of the West-to-East Power Transmission Project and the transmission of clean energy from Tibet. Upon completion, the project will be significant in boosting the large-scale, intensive development and efficient utilization of hydroelectric and new energy in Tibet, promoting high-quality development in Tibet. In addition, it will aid the Guangdong-Hong Kong-Macao Greater Bay Area in achieving the dual carbon goal, enhancing the ability to ensure power supply.