Methane Leaks Are 70% Higher Than Official Figures — The Climate Time Bomb That Governments Hide

Satellite data reveals methane leaks from oil and gas are 70% higher than official figures. Here is the scale of this underreported climate problem and who is responsible.

The gap between methane emissions that oil and gas companies report to regulatory authorities and the methane emissions that satellite monitoring systems directly measure has been documented in multiple research publications since 2018, and the April 2026 compilation of satellite monitoring data from multiple systems — MethaneSAT, TROPOMI, and commercial satellites from GHGSat — produces the most comprehensive current estimate: methane leaks from fossil fuel operations are approximately 70 percent higher than official national inventory figures.

Methane is a potent greenhouse gas — approximately 80 times more powerful than CO2 over a 20-year timescale — and its atmospheric concentration has been rising at accelerating rates. The fossil fuel sector is one of the three largest sources of anthropogenic methane emissions, alongside agriculture and waste management. The underreporting of fossil fuel methane therefore represents a significant underestimate of the sector's climate impact.

The reason for the gap between reported and measured methane is partly intentional and partly structural. Intentional underreporting — companies measuring emissions at a convenient point that misses specific leakage pathways — has been documented in individual company and facility investigations. But much of the gap reflects the structural inadequacy of ground-based monitoring methodology: companies measure at designated sampling points using standard protocols that miss the fat-tailed distribution of emissions where the largest sources are the largest emitters at non-average rates.

Satellite monitoring doesn't have this structural problem. It measures what is actually there in the atmosphere above production areas, regardless of where official sampling points are located. The 70 percent gap between satellite-measured and reported emissions is therefore primarily a methodology problem — reported figures reflect what approved measurement methodologies produce, not what satellites directly observe.

The policy implications are significant: if actual methane emissions are 70 percent higher than national inventories assume, climate models based on those inventories are systematically underestimating current forcing, and emission reduction commitments calibrated to inventory figures are not delivering what they appear to.