Global energy-related carbon dioxide (CO2) emissions rose less strongly in 2023 than the year before even as total energy demand growth accelerated, new IEA analysis shows, with continued expansion of solar PV, wind, nuclear power and electric cars helping the world avoid greater use of fossil fuels. Without clean energy technologies, the global increase in CO2 emissions in the last five years would have been three times larger.

Emissions increased by 410 million tonnes, or 1.1%, in 2023 – compared with a rise of 490 million tonnes the year before – taking them to a record level of 37.4 billion tonnes. An exceptional shortfall in hydropower due to extreme droughts – in China, the United States and several other economies – resulted in over 40% of the rise in emissions in 2023 as countries turned largely to fossil fuel alternatives to plug the gap. Had it not been for the unusually low hydropower output, global CO2 emissions from electricity generation would have declined last year, making the overall rise in energy-related emissions significantly smaller.

The new findings come from the IEA’s annual update on global energy-related CO2 emissions – and the inaugural edition of a new series, the Clean Energy Market Monitor, which provides timely tracking of clean energy deployment for a select group of technologies and outlines the implications for global energy markets more broadly.

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https://www.iea.org/news/major-growth-of-clean-energy-limited-the-rise-in-global-emissions-in-2023