RE Wins at World’s 1st ‘Green’ Olympics Being Held in China: Carbon Brief

The desire of the leadership in China to showcase clean energy development and make it a part of the country’s international image, while important in itself, is backed by real developments on the ground, finds UK-based Carbon Brief, a platform that specialises in the science and policy of climate change.

Established in response to the 2009 Climategate controversy, Carbon Brief is funded by independent philanthropic initiative European Climate Foundation and has won many an award for investigative journalism and data visualisation.

Zhangjiakou, the mountain city in China’s Hebei province that is hosting the skiing events of the games, has renewable energy capacity exceeding that of most countries in the world – and a pioneering “Zhangjiakou Green Electric Grid” built to deliver power from the city to neighbouring Beijing.

Moreover, the pilot renewable power grid is a scale model of a much larger plan that the Chinese government is rolling out nationwide, as it aims to peak carbon dioxide (CO2) by 2030 and reach carbon neutrality by 2060.

Olympic ‘green’ power supply

From the start of the preparations, in mid-2019, to the end of the games, the venues will require about 400 gigawatt hours (GWh) of electricity, according to the organisers. This is equal to the annual electricity consumption of approximately 180,000 Chinese households.

By the end of 2021, the installed capacity of wind and solar power in China was more than 600 gigawatts (GW), with both technologies crossing the 300GW mark last year. Including hydro power, a total of 2,480 terawatt hours (TWh) of renewable electricity was generated in 2021 in China. China’s plentiful renewable energy capacity can, therefore, easily cover the Olympics electricity use.

However, instead of simply purchasing renewable electricity on paper, via the trading mechanism, the government has used the games to pioneer a dedicated renewable power grid.

To fulfil the announced 100% renewable electricity target, the government is using the cross-regional “green power trading” mechanism, which allows large consumers to buy renewable electricity generated anywhere in the country. The games have been given priority in the trading platform, with venues able to buy renewable electricity at a lower price.

State Grid Beijing Company manages the renewable electricity electricity trading for the games. This electricity mainly comes from 11 wind and solar power generation companies located in Zhangjiakou. The organisers report having purchased 171GWh of “green” electricity – wind and solar by 30 October 2021 and 237GWh by the end of 2021. These numbers imply that the electricity use at the venues during the Olympics themselves will be around 160GWh.

The winter Olympic games has accelerated the construction of the Zhangbei renewable energy flexible direct current (DC) grid. The Beijing 2022 games rely on this newly-built infrastructure in Zhangjiakou City, a $2bn project launched in June 2020 to distribute wind and solar power, with pumped hydro storage to regulate the variations in output.

Zhangjiakou: the wind power capital of China

Wind and solar power installations in Zhangjiakou, China, were accelerated as well, with capacity hitting 23.4GW, breaking down into 16.4GW wind and 7.0GW solar. If the city were a country, its combined wind and solar capacity would be the 12th largest in the world, as shown in the chart below, behind Brazil but ahead of Vietnam.

At an average operating rate for January-February, wind and solar power generation in Zhangjiakou during the 17 days of the games will be around 2,300GWh, about 10 times the projected electricity consumption of the Olympic venues during this time.

The city’s installed coal-fired power capacity, at 5.9GW, is dwarfed by the renewables installations. Carbon Brief estimates that more than 60% of electricity generation in the city in January-February will be derived from wind and solar power. Output from wind and solar would also exceed Zhangjiakou’s total consumption during the period.

This 60% share for wind and solar stands out particularly strongly from the rest of Hebei province and from Beijing, where fossil fuels generate 90% of all electricity at this time of the year. The average for the whole country is approximately 75% (rightmost column).

At an average operating rate for January-February, wind and solar power generation in Zhangjiakou during the 17 days of the games will be around 2,300GWh, about 10 times the projected electricity consumption of the Olympic venues during this time.

The city’s installed coal-fired power capacity, at 5.9GW, is dwarfed by the renewables installations. We estimate that more than 60% of electricity generation in the city in January-February will be derived from wind and solar power, as shown in the chart below. Output from wind and solar would also exceed Zhangjiakou’s total consumption during the period.

This 60% share for wind and solar stands out particularly strongly from the rest of Hebei province and from Beijing, where fossil fuels generate 90% of all electricity at this time of the year. The average for the whole country is approximately 75% (rightmost column).

A long-standing challenge with China’s long-distance transmission lines has been their inflexible operation, which has meant that much of the power dispatched through the lines has been generated from coal. The Zhangjiakou project is about pioneering a new institutional set-up that is required for the power grid to absorb high shares of intermittent generation, at least as much as new hardware.

Continued reliance on coal

However, the measures that coal-fired power plants report taking to ensure stable power supply during the Olympics highlight that China’s power grid is still highly reliant on coal.

State-owned power generation groups ordered their plants in the Beijing-Tianjin-Hebei area to stockpile enough coal – more than 30 days – and carry out their maintenance before the end of 2021, so that they are all available to generate during the games.

Coal deliveries are being given priority in rail and road freight. The government’s requirement to increase coal stockpiles in the provinces that have an important role in power supply for the Olympics has triggered a recent coal price increase.

After the Olympics

Zhangjiakou’s wind and solar can currently generate about 44TWh per year. The city’s own consumption is about 19TWh, leaving about 25TWh for exports.

After the athletes go home, the “green grid” is projected to transmit about 14TWh of renewable energy from Zhangjiakou to Beijing every year, equivalent to approximately 10% of the electricity consumption of China’s capital, leaving a lasting legacy from the games.

Another 7TWh per year will be transmitted to Xiongan, China’s “city of the future”, being built outside of Beijing. The transmission to Xiongan takes place through the dedicated Zhangbei ultra-high voltage transmission line.

Meanwhile, Zhangjiakou is aiming to more than double its wind and solar capacity from current levels, to reach a combined 50GW by 2030.