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

The blockade of the Strait of Hormuz led to a spike in oil prices Anna Ivanova/Alamy Carbon dioxide emissions from fossil fuels are expected to drop this year for the first time in five years. The slowdown has been partly attributed to the energy shock triggered ’s war on Iran. The conflict, which began in February, led to a jump in oil prices after the Strait of Hormuz, the main trade route for about 20 per cent of the world’s oil and liquefied natural gas, was blockaded . This is still affecting petrol prices and household gas bills, and has seen countries around the world turn to alternative fuel types to boost energy security. Around 38.2 gigatonnes of CO2 are expected to be emitted in 2026 globally, according to the latest annual Global Carbon Budget – put together 140 researchers. This is a 0.4 per cent decrease on the previous year, largely due to a projected 1.9 per cent fall in emissions from oil. The drop in oil use was partly offset by a 0.6 per cent increase in emissions from coal. Robbie Andrew at climate research group CICERO in Oslo, Norway, one of the report authors, says financial pressures due to the energy shock are likely to have caused the drop in emissions this year, which may turn out to be a “blip”. “On the assumption that there are no further crises, then you’d expect that emissions would bounce back,” says Andrew. The two biggest dips in emissions in the 21st century have been attributed to the covid-19 pandemic, which saw emissions drop by around 6 per cent in 2020, and the global financial crisis, which saw emissions drop around 2 per cent in 2009. The future outlook depends on how long the energy shock lasts, says Andrew, with governments forced to look at the economic case for continuing to subsidise fossil fuels. The rollout of renewable energy also played a part in bringing down carbon emissions. Electric vehicles and solar and wind power are predicted to offset 64 to 79 per cent of increasing emissions from demand growth through to 2028.