National Iranian Oil Company (NIOC) emitted 5.9 million metric tons of methane in 2021, making it the global energy sector's biggest methane-emitter. The oil and gas giant Gazprom followed, with emissions of 4.1 million metric tons. The top 30 companies were responsible for an estimated 54 million metric tons of methane emissions in 2021, or roughly 4.5 billion metric tons of carbon dioxide equivalent when converted into CO₂e using 20-year Global Warming Potential factor. This accounted for almost half the global energy sector's total methane emissions.
Coal mine methane (CH4) emissions from state-owned and investor/privately owned enterprises worldwide
(in million metric tons)
Characteristic
State-owned
Investor-owned and privately owned
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Global Energy Monitor. (November 8, 2022). Coal mine methane (CH4) emissions from state-owned and investor/privately owned enterprises worldwide (in million metric tons) [Graph]. In Statista. Retrieved July 27, 2024, from https://www.statista.com/statistics/1346061/fossil-fuel-company-largest-methane-emitters-worldwide/
Global Energy Monitor. "Coal mine methane (CH4) emissions from state-owned and investor/privately owned enterprises worldwide (in million metric tons)." Chart. November 8, 2022. Statista. Accessed July 27, 2024. https://www.statista.com/statistics/1346061/fossil-fuel-company-largest-methane-emitters-worldwide/
Global Energy Monitor. (2022). Coal mine methane (CH4) emissions from state-owned and investor/privately owned enterprises worldwide (in million metric tons). Statista. Statista Inc.. Accessed: July 27, 2024. https://www.statista.com/statistics/1346061/fossil-fuel-company-largest-methane-emitters-worldwide/
Global Energy Monitor. "Coal Mine Methane (Ch4) Emissions from State-owned and Investor/Privately Owned Enterprises Worldwide (in Million Metric Tons)." Statista, Statista Inc., 8 Nov 2022, https://www.statista.com/statistics/1346061/fossil-fuel-company-largest-methane-emitters-worldwide/
Global Energy Monitor, Coal mine methane (CH4) emissions from state-owned and investor/privately owned enterprises worldwide (in million metric tons) Statista, https://www.statista.com/statistics/1346061/fossil-fuel-company-largest-methane-emitters-worldwide/ (last visited July 27, 2024)
Coal mine methane (CH4) emissions from state-owned and investor/privately owned enterprises worldwide (in million metric tons) [Graph], Global Energy Monitor, November 8, 2022. [Online]. Available: https://www.statista.com/statistics/1346061/fossil-fuel-company-largest-methane-emitters-worldwide/