Top 10 countries by actionable MARS notifications from oil and gas operations, 2025

Sources

: IEA analysis based on IMEO data as of February 2026. Note that in some cases, even where the country had not designated a focal point, it still provided a response to UNEP’s IMEO concerning the notification.

Notes

Includes countries with the most actionable notifications from the Methane Alert and Response System (MARS). “Actionable” refers to plumes that: have been validated by IMEO experts; have been detected within the last 15 days; and can be attributed to a specific facility or operator. Sources shown are based on emission events verified by MARS and do not reflect the distribution of emissions over regions; emission events can be observed more easily in some regions than others (see Documentation).