Global greenhouse gas emissions amounted to roughly 57 billion metric tons of carbon dioxide equivalent (GtCOâ‚‚e) in 2023. The power sector was the biggest global contributor to GHG emissions that year, with a share of 26 percent. The majority of emissions from electricity production come from coal-fired power plants. Transportation was the second-largest source of global GHG emissions in 2023, with road vehicles the biggest polluters.
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UNEP. (October 24, 2024). Distribution of greenhouse gas emissions worldwide in 2023, by sector [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved August 04, 2026, from /statistics/241756/proportion-of-energy-in-global-greenhouse-gas-emissions/
UNEP. "Distribution of greenhouse gas emissions worldwide in 2023, by sector." Chart. October 24, 2024. ÌÇÐÄÆÆ½â°æ. Accessed August 04, 2026. /statistics/241756/proportion-of-energy-in-global-greenhouse-gas-emissions/
UNEP. (2024). Distribution of greenhouse gas emissions worldwide in 2023, by sector. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: August 04, 2026. /statistics/241756/proportion-of-energy-in-global-greenhouse-gas-emissions/
UNEP. "Distribution of Greenhouse Gas Emissions Worldwide in 2023, by Sector." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 24 Oct 2024, /statistics/241756/proportion-of-energy-in-global-greenhouse-gas-emissions/
UNEP, Distribution of greenhouse gas emissions worldwide in 2023, by sector ÌÇÐÄÆÆ½â°æ, /statistics/241756/proportion-of-energy-in-global-greenhouse-gas-emissions/ (last visited August 04, 2026)
Distribution of greenhouse gas emissions worldwide in 2023, by sector [Graph], UNEP, October 24, 2024. [Online]. Available: /statistics/241756/proportion-of-energy-in-global-greenhouse-gas-emissions/