CO2 emissions from fossil fuels may fall 0.4% in 2026, but the global total is expected to rise
Global Carbon Budget estimate points to a decline driven by oil and renewables, with a wide margin of uncertainty; rising land-use emissions are expected to push the total up.
Translated from the Portuguese original by the Panorama newsroom. Read in Portuguese
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Global carbon dioxide (CO2) emissions from burning coal, oil and natural gas may decline slightly in 2026, according to the new edition of the Global Carbon Budget, an annual balance between the CO2 emitted worldwide and that absorbed by forests and oceans. The figures were reported by g1.
In the projected central scenario, fossil emissions would fall 0.4% from 2025 and total 38.2 billion tonnes. Because the uncertainty range calculated by the researchers spans from a 1.5% decline to a 0.6% increase, it is not yet possible to guarantee that the year will end below the previous one.
Oil accounts for the biggest change: its emissions are projected to fall 1.9%, partly explained by the turmoil in the energy market caused by the war in Iran. Natural gas is estimated to decline 0.3%, while coal keeps rising, with a projected increase of 0.6%. For the first time, the researchers directly estimated the effect of solar power, wind power and electric vehicles: about 500 million tonnes of CO2 that would not be emitted in 2026.
The authors stress that a drop in a single year does not mean emissions have peaked. Previous declines, such as those during the pandemic and the 2008 financial crisis, were followed by new increases. According to researcher Glen Peters, of the Cicero institute and one of the study's authors, only a structural change would justify speaking of a peak.
Even with the possible reduction in fossil emissions, the global total is expected to grow from 42.8 billion to 43.3 billion tonnes, since emissions from land-use change, such as deforestation and forest degradation, are projected to rise.
On this point, Brazil stands out: on average from 2016 to 2025, no country emitted more net CO2 from land-use change, with 28% of the world total, ahead of Indonesia and the Democratic Republic of the Congo. In fossil emissions, however, Brazil's share was about 1.3% in 2025, according to the report.