The 24th Winter Olympic Games will kick off in Beijing on February 4, 2022.

The sports department of launched a series of columns "Hundred Questions about Winter Olympics", aimed at popularizing Winter Olympic knowledge, answering hot questions, sharing interesting stories about ice and snow, and helping everyone have a better watching experience during the Beijing Winter Olympics.

The 54th Winter Olympics 100 Questions | Why is it said that the electricity in the Beijing Winter Olympics venues are all "green"?

  "Hosting the Olympics in a green environment" has always been one of the important concepts of the Beijing Winter Olympics. The "green electricity" used in the venues for the Winter Olympics is a manifestation of this concept and a highlight of the Olympics this time.

So the question is, where does the electricity used by each venue come from?

  On December 21, 2020, the first 110 kV transmission and transformation project operated by the State Grid Beijing Electric Power Construction was officially put into operation.

At this point, the construction of the supporting power grid for the Beijing 2022 Winter Olympics has been completed, laying the foundation for 100% green power supply for all Olympic venues and supporting facilities.

  During the Beijing Winter Olympics, all 26 venues in the three major competition areas will use green power. This will also be the first time in the history of the Olympics that 100% green power supply will be realized in all venues.

Night view of the "Ice Cube" at the Beijing Winter Olympics.

Photo by Zhai Lu, China News Service

  According to reports, the "green power" used by the venue comes from the Zhangbei Renewable Energy Flexible DC Grid Test Demonstration Project. Zhangbei has abundant wind and solar power resources. This project can deliver about 14 billion kilowatt-hours of green power to Beijing every year. It supplies about one-tenth of Beijing’s electricity consumption, including the direct meeting of the Beijing and Yanqing venues for the Beijing Winter Olympics, while the Zhangjiakou competition area consumes local green electricity on-site for the Winter Olympics.

Night view of the National Speed ​​Skating Hall, a landmark building for the Beijing 2022 Winter Olympics.

Photo courtesy of Beijing Major Office

  The Zhangbei Renewable Energy Flexible DC Grid Test Demonstration Project started in February 2018, and the construction task was completed in December 2019.

On June 25, 2020, the project successfully passed a comprehensive and rigorous commissioning test and 168-hour trial operation, and was officially put into operation on June 29.

  The Zhangbei Rouzhi project has a total investment of 12.5 billion yuan, and newly built 4 converter stations in Zhangbei, Kangbao, Fengning and Beijing, with a rated voltage of ±500 kV, a rated transmission capacity of 4.5 million kilowatts, and a transmission line length of 666 kilometers.

It connects the Zhangbei New Energy Base, Fengning Energy Storage Power Supply and the Beijing Load Center in a reliable way, greatly increasing the proportion of clean energy supply, and providing a strong and abundant green energy guarantee for the Winter Olympics.

(Bian Liqun)