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Sustainability

Global energy-related CO2 emissions rose to record high in 2021: IEA

Global energy-related CO2 emissions rose to record high in 2021: IEA

A coal-burning power plant can be seen behind a factory in the city of Baotou, in China's Inner Mongolia Autonomous Region, on Oct 31, 2010. (Photo: REUTERS/David Gray)

LONDON: Global energy-related emissions of carbon dioxide rose to their highest ever level last year as economies recovered from the coronavirus pandemic and coal use increased, the International Energy Agency (IEA) said on Tuesday (Mar 8).

Global emissions from energy rose 6 per cent in 2021 to a record 36.3 billion tonnes, IEA analysis showed.

"The world must now ensure that the global rebound in emissions in 2021 was a one-off  and that an accelerated energy transition contributes to global energy security and lower energy prices for consumers," the IEA said in a statement.

Coal accounted for more than 40 per cent of the overall growth in global CO2 emissions in 2021, reaching an all-time high of 15.3 billion tonnes. CO2 emissions from natural gas rebounded well above their 2019 levels to 7.5 billion tonnes.

China, which the IEA said was the only major economy to experience growth in both 2020 and 2021, was the largest driver of the rise in emissions.

"In 2021 alone, China’s CO2 emissions rose above 11.9 billion tonnes, accounting for 33 per cent of the global total," the IEA said.

India's CO2 emissions rose above 2019 levels last year, driven by growth in coal use for electricity generation.

The country's coal-fired generation reached an all-time high, jumping 13 per cent above its 2020 level. This was partly because the growth of renewables slowed to a third of the average rate seen over the previous five years, the IEA said.

A surge in gas prices in Europe and the United States also contributed to the rise in global emissions, making it more profitable for power generators to burn coal which emits double the amount of carbon dioxide as gas-powered power plants.

"Gas-to-coal switching pushed up global CO2 emissions from electricity generation by well over 100 million tonnes, notably in the United States and Europe where competition between gas and coal power plants is tightest," the IEA said.

In the United States, CO2 emissions were 4 per cent below their 2019 level last year, while in the European Union they were 2.4 per cent lower. 

Source: Reuters/ec

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