Nuclear Power and Secure Energy Transitions: From Today's Challenges to Tomorrow's Clean Energy Systems
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Power generation1 and transport together accounted for over two thirds of total emissions in 2019 and have been responsible for almost all global growth since 2010. The remaining third was mainly associated with the industry and buildings sectors.

After allocating electricity and heat emissions to final sectors, industry continued to be the largest emitting sector, with over 40% of global emissions in 2019. Emissions in the transport sector increased to account for 27% of the global emissions in 2019, while buildings related emissions slightly decreased to represent 25% of global emissions in 2019.

Global CO2 emissions by sector, 2019

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Notes and references
  1. Refers to generation of electricity and heat.