Global carbon emissions set to fall in 2026 due to Iran energy shock

Global carbon emissions from fossil fuels are projected to decline for the first time in five years, according to the latest Global Carbon Budget report. The decrease is attributed to an energy shock caused by the US and Israel's war on Iran, which led to a blockade of the Strait of Hormuz and a spike in oil prices. This has prompted countries worldwide to seek alternative fuel sources to enhance energy security.

The 2026 Global Carbon Budget, compiled by over 140 researchers, predicts that 38.2 gigatonnes of CO2 will be emitted globally, a 0.4% decrease from the previous year. The drop in oil usage is partly due to the energy crisis, though it is uncertain if this is a temporary trend or the start of a long-term decline. The International Energy Agency projects that electric vehicles and renewable energy sources, such as solar and wind power, will offset 64 to 79% of the increase in emissions from demand growth through 2028.