World's Highest Power Lines Set in Tibet

The world's highest ultra-high voltage transmission project has been put into operation in the Tibet autonomous region, November 23, 2018. The project in southwestern China's Himalayan region has required workers to string power lines reaching altitudes of just under 5,300 meters above sea-level. [Photo provided by State Grid Qinghai Electric Power Company]

State Grid technicians put the finishing touches on the world's highest ultra-high voltage transmission project in the Tibet autonomous region, November 23, 2018. Conditions 'on the roof of the world' have created challenges for workers, some of whom strung power lines at elevations of close to 5,300 meters above sea-level. [Photo provided by State Grid Qinghai Electric Power Company]

State Grid technicians work on the world's highest ultra-high voltage transmission project in the Tibet autonomous region, November 23, 2018. Conditions 'on the roof of the world' have created challenges for workers, some of whom strung power lines at elevations of close to 5,300 meters above sea-level. [Photo provided by State Grid Qinghai Electric Power Company]

State Grid technicians put the finishing touches on the world's highest ultra-high voltage transmission project in the Tibet Autonomous Region, November 23, 2018. Conditions 'on the roof of the world' have created challenges for workers, some of whom strung power lines at elevations of close to 5,300 meters above sea-level. [Photo provided by State Grid Qinghai Electric Power Company]

Technicians install spacers on the world's highest ultra-high voltage transmission project in southwest China's Tibet autonomous region, September, 2018. Workers involved in the project have had to overcome various challenges, including the lack of oxygen at altitudes as high as 5,300 meters above sea-level. [Photo provided by State Grid Qinghai Electric Power Company]

The world's highest ultra-high voltage transmission project has been put into operation in the Tibet autonomous region, November 23, 2018. The project in southwestern China's Himalayan region has required workers to string power lines reaching altitudes of just under 5,300 meters above sea-level. [Photo provided by State Grid Qinghai Electric Power Company]