As of Aug 24, Inner Mongolia's first ultra-high voltage (UHV) project – the Xiliin Gol League to Shandong 1000 kV AC transmission line – has transmitted 101.1 billion kWh of electricity.

The project starts in Xiliin Gol League, North China's Inner Mongolia autonomous region, and ends in Jinan, East China's Shandong province, passing through Hebei province and the city of Tianjin. It spans 2×730 kilometers, with 1,927 power towers, a rated voltage of 1,000 Kilovolts, and a total investment of 17.82 billion yuan ($2.48 billion).

Construction began in November 2014, and the project was put into operation in July 2016. It was the first in the world to adopt carbon fiber composite conductor technology and the first in China to use 1100 kV indoor gas-insulated switchgear, transformers, and seismic isolation for high-voltage reactors.

The project has significantly improved transmission efficiency, reduced losses, and optimized resource allocation.

Each year, it saves 22.4 million metric tons of coal, cuts 44 million tons of carbon dioxide emissions, improves air quality, and supports intensive energy development in Xiliin Gol League. It also plays a vital role in turning Inner Mongolia’s resource advantages into economic strengths.