In 2023, the carbon emissions of the three sources increased compared to the previous year. Scope 3 was the biggest emitter that year, with million metric tons of CO2 equivalent. Scope 3 emissions are indirect carbon emissions generated by the company's operations, employee commuting, and waste management.
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Heathrow Airport Holdings Ltd.. (March 7, 2024). Greenhouse gas (GHG) emissions of London Heathrow Airport from 2019 to 2023, by source (in metric tons of COâ‚‚ equivalent) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 30, 2026, from /statistics/1490843/london-heathrow-airport-greenhouse-gas-emissions-by-source/
Heathrow Airport Holdings Ltd.. "Greenhouse gas (GHG) emissions of London Heathrow Airport from 2019 to 2023, by source (in metric tons of COâ‚‚ equivalent)." Chart. March 7, 2024. ÌÇÐÄÆƽâ°æ. Accessed July 30, 2026. /statistics/1490843/london-heathrow-airport-greenhouse-gas-emissions-by-source/
Heathrow Airport Holdings Ltd.. (2024). Greenhouse gas (GHG) emissions of London Heathrow Airport from 2019 to 2023, by source (in metric tons of COâ‚‚ equivalent). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 30, 2026. /statistics/1490843/london-heathrow-airport-greenhouse-gas-emissions-by-source/
Heathrow Airport Holdings Ltd.. "Greenhouse Gas (Ghg) Emissions of London Heathrow Airport from 2019 to 2023, by Source (in Metric Tons of Coâ‚‚ Equivalent)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 7 Mar 2024, /statistics/1490843/london-heathrow-airport-greenhouse-gas-emissions-by-source/
Heathrow Airport Holdings Ltd., Greenhouse gas (GHG) emissions of London Heathrow Airport from 2019 to 2023, by source (in metric tons of COâ‚‚ equivalent) ÌÇÐÄÆƽâ°æ, /statistics/1490843/london-heathrow-airport-greenhouse-gas-emissions-by-source/ (last visited July 30, 2026)
Greenhouse gas (GHG) emissions of London Heathrow Airport from 2019 to 2023, by source (in metric tons of COâ‚‚ equivalent) [Graph], Heathrow Airport Holdings Ltd., March 7, 2024. [Online]. Available: /statistics/1490843/london-heathrow-airport-greenhouse-gas-emissions-by-source/
