How did the wind from Zhangbei light up the lights of Beijing? Multiple energy companies contributed to the 100% green electricity for the Winter Olympics.

The Beijing 2022 Winter Olympics are in full swing. According to official sources, all 26 venues in the three competition zones are powered by green electricity, marking the first time in Olympic history that all venues have been 100% supplied by green energy.

Where does the 'green electricity' come from? Foreign Ministry spokesperson Zhao Lijian explained the Games' green concept with the phrase, 'The wind from Zhangbei lights up the lights of Beijing.' Behind this is the fact that several energy companies have established renewable energy demonstration projects in Zhangbei, Hebei Province, converting the wind into clean electricity, feeding it into the North Hebei power grid, and then transmitting it to the three competition zones of Beijing, Yanqing, and Zhangjiakou.

　　Multiple Energy Companies Contribute

　　According to Securities Daily reporters, the 'green electricity' supply for the Beijing 2022 Winter Olympics includes various clean energy sources such as photovoltaic, wind, and hydropower. Many state-owned power enterprises, including the State Grid Corporation of China, China Huadian Corporation, China Energy Investment Corporation, China Datang Corporation, China National Energy Group, China Three Gorges Corporation, Power Construction Corporation of China, and China Energy Engineering Group, as well as power companies such as Beijing Energy Group, participated in the related work.

　　Securities Daily reporters learned from Power Construction Corporation of China that several projects invested in, constructed, and operated by its subsidiary, New Energy Group—including the Baitu Wind Farm, Panchanghe Wind Farm, Shuiquan Wind Farm, and Beizhuangbao Photovoltaic Power Station—are responsible for ensuring the power supply for the Winter Olympics. The four farms/stations have a total installed capacity of 400 megawatts, an annual grid-connected power generation of approximately 960 million kilowatt-hours, saving about 300,000 tons of standard coal and reducing carbon dioxide emissions by about 790,000 tons annually. In addition, the Fengning Pumped Storage Power Station, designed and constructed by Power Construction Corporation of China, plays a stabilizing role, acting as a 'stabilizer' and a 'super power bank,' ensuring the stable operation of the Zhangbei flexible DC grid and guaranteeing full green electricity coverage for the Olympic venues.

　　As a national key project, the Fengning Pumped Storage Power Station, upon commissioning, can convert the unstable clean energy output of photovoltaic and wind power in the Beijing-Tianjin-Hebei region into stable green energy. It can absorb over 8.8 billion kilowatt-hours of surplus electricity annually, generating 6.612 billion kilowatt-hours of electricity, enough to meet the annual electricity needs of 2.6 million households and reducing carbon emissions by 1.2 million tons. During the day, the Fengning Pumped Storage Power Station uses excess electricity to start pumping water, converting electrical energy into 'potential energy' for storage. At night, the station releases water to generate electricity, converting 'potential energy' back into electricity to ensure power supply for the Olympic events.

　　According to China Energy Engineering Group, the Gezhouba Second Company of China Energy Engineering Group also undertook key construction tasks for the Fengning Pumped Storage Power Station, including the upper and lower reservoirs, inlet and outlet, gate shafts, hoisting machine houses, and dams. The project team used advanced technologies such as innovative digital dams, rapid quality testing of compaction, intelligent digital grouting, and slip-forming one-time surface forming to promote the safe and high-quality construction of the power station, laying a solid foundation for achieving the goal of on-time commissioning and power generation.

　　As a signed partner for green power supply to the Beijing 2022 Winter Olympics and Paralympics venues, Beijing Energy Group utilized its green energy bases in the Beijing-Tianjin-Hebei region to contribute to the 100% green operation of the Winter Olympics. On the evening of the opening ceremony on February 4, more than 100 employees from green energy bases such as the Jingzhang Olympic Wind Power Project, the Guanghing Wind Power Project, the Huainan Wind Power Project, and the Yanqing Photovoltaic Project under Beijing Energy Group's Clean Energy Beijing Branch, persevered despite the cold wind and low temperatures, conducting multiple inspections of each power supply equipment, power line, and power facility in the wind farm and continuously carrying out equipment testing to ensure reliable power supply from the wind farm. In addition, the Jingneng Kangbao Wind Power Project, jointly contracted by Shanghai Electric Power Construction and Shanghai Electric Power Design Institute, subsidiaries of Power Construction Corporation of China, with participation from Hydropower Fourth Bureau, is also a major source of green electricity for the Beijing 2022 Winter Olympics, simultaneously shouldering the responsibility of clean heating for the capital. The Yanqing competition zone integrated energy project, constructed and operated by Beijing Energy Group's Clean Energy Beijing Branch, achieved 100% renewable energy heating for the Olympic Village, a first in Olympic history.

Promoting the Concept of Green Development

　　"China Three Gorges Renewable Energy mainly provides clean energy to the Winter Olympics venues and supporting facilities through electricity trading. The company participated in the green electricity trading for the Beijing Winter Olympics in two phases, with a total volume of 51 million kilowatt-hours, including 21 million kilowatt-hours during the main competition period, fully supporting the green Olympics." China Three Gorges Renewable Energy told Securities Daily reporters that the green electricity it provided mainly comes from wind power projects in Zhangjiakou, and the generated electricity is sent to the Olympic venues through the Zhangbei flexible DC demonstration project. In addition, China Three Gorges Renewable Energy also donated 200,000 tons of CER carbon emission reductions to the Winter Olympics.

　　China Three Gorges Renewable Energy told Securities Daily reporters that the 100% use of green electricity in the Winter Olympics will further promote the establishment of a green development concept throughout society and stimulate green consumption. As a pure renewable energy power generation company, China Three Gorges Renewable Energy will take full advantage of the Winter Olympics to further promote the supply of green electricity and carbon assets, providing society with a continuous supply of green products and contributing to the achievement of the 'dual carbon' goals and the construction of a new power system based on renewable energy.

　　How difficult was it to achieve a 100% green electricity supply for the venues in the three competition zones of the Winter Olympics? Liu Xiaoyan, an energy industry analyst at Longzhong Information, told Securities Daily reporters that due to the inherent randomness and volatility of renewable energy, large-scale renewable energy grid integration is a global challenge. The Zhangjiakou region is an important renewable energy base in China, and the Zhangbei flexible DC project uses China's original and world-leading flexible DC grid technology, which can effectively suppress AC voltage fluctuations and reduce the impact of power fluctuations on the receiving-end grid, effectively solving the three major problems of 'difficult connection,' 'difficult transmission,' and 'difficult absorption' in the grid integration of intermittent energy sources such as wind and photovoltaic power generation. It gathers large-scale, unstable renewable energy from multiple points to form a stable and controllable power source, transmitting green electricity to Beijing.

　　Liu Xiaoyan said that the 100% green electricity supply for the Winter Olympics venues is in line with the 'sustainable development' concept of the Winter Olympics and demonstrates China's confidence and attitude in vigorously developing the clean energy industry. At the same time, this is also an important way to explore the integrated 'transmission-grid connection-absorption' of large-scale clean energy, which will have a huge driving effect on three areas: wind power and photovoltaics will enter a doubling stage; energy storage will experience explosive growth; and energy digitalization will usher in a golden period of development.

Source: CDCC

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