The Intergovernmental Panel on Climate Change (IPCC) in their recent report issued a code red that there is more than a 50% chance that we will reach 1.5°C warming within the next two decades if emissions continue at their current rates. Whilst many countries have strengthened their commitments, it is clear that ambition is nowhere near enough to keep global warming to 2°C let alone 1.5°C. It is in this context that this year’s Net Zero Economy Index examines the rate of decarbonisation needed to deliver a 1.5°C aligned net zero world by 2050 and examines how G20 member states are faring against what is required.