Clean hydrogen has the potential to function as an energy carrier and feedstock to decarbonise multiple sectors (especially hard-to-abate sectors) and support global decarbonisation efforts by 2050 and beyond.The main driver for hydrogen demand in multiple sectors is the target of abatement of emissions. Making hydrogen from clean sources, its infrastructure and transportation available at scale in various regions would be key to secure a diversified supply and contribute to a global low-carbon energy security.