The Paris-based agency says its preliminary data for 2015 shows that global emissions of CO2 stood at 32.1bn tonnes, having remained essentially flat since 2013. Emissions stood at 32.3bn tonnes in 2014.

“The new figures confirm last year’s surprising but welcome news: we have now seen two straight years of greenhouse gas emissions decoupling from economic growth,” says IEA executive director Fatih Birol.