Methane Leaks
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New methane plumes: week of 1 Dec 2025

UNEP published 687 new methane plume detections this week across 33 countries.

687
Plumes
33
Countries
451,879 kg/h
Largest detected rate
369
With a likely operator

Biggest new plumes

Detected CountrySite Emission rate Likely operator
30 Oct 2025Oil & gas IranIRN_S_185 451,879 kg/h National Iranian South Oil Company Plausible View
30 Oct 2025Oil & gas IranIRN_S_185 408,435 kg/h National Iranian South Oil Company Plausible View
30 Oct 2025Oil & gas IranIRN_S_185 385,374 kg/h National Iranian South Oil Company Plausible View
30 Oct 2025Oil & gas IranIRN_S_185 268,477 kg/h National Iranian South Oil Company Plausible View
28 Oct 2025Oil & gas KazakhstanKAZ_S_137 204,000 kg/h Not yet attributed View
31 Oct 2025Oil & gas IraqIRQ_S_067 188,868 kg/h Not yet attributed View
31 Oct 2025Oil & gas IraqIRQ_S_067 123,491 kg/h Not yet attributed View
15 Oct 2025Oil & gas IraqIRQ_S_067 116,000 kg/h Not yet attributed View
2 Nov 2025Oil & gas UzbekistanUZB_S_124 113,000 kg/h Uzbekneftegaz Plausible View
31 Oct 2025Oil & gas IraqIRQ_S_067 102,475 kg/h Not yet attributed View
30 Oct 2025Oil & gas IranIRN_S_185 97,000 kg/h National Iranian South Oil Company Plausible View
24 Oct 2025Oil & gas EgyptEGY_S_051 95,000 kg/h Not yet attributed View
23 Oct 2025Oil & gas TurkmenistanTKM_S_047 88,000 kg/h Turkmennebit Plausible View
30 Oct 2025Oil & gas IranIRN_S_185 50,798 kg/h National Iranian South Oil Company Plausible View
30 Oct 2025Oil & gas IranIRN_S_186 44,652 kg/h National Iranian South Oil Company Plausible View

New plumes by country

China138
Turkmenistan112
Algeria109
Iran44
Syria31
United States24
Iraq21
Libya19
Poland19
Oman18
Kazakhstan15
Uzbekistan14
Egypt14
Nigeria13
South Africa12

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