Hydrogen and hydrogen-based fuels could help facilitate the decarbonisation of a range of sectors where the pathway for achieving meaningful emission reductions is currently uncertain or difficult, a new global study argues. Released by the International Energy Agency (IEA) at a meeting of G20 energy and environment ministers in Karuizawa, Japan, the report says that hydrogen and hydrogen-based fuels could help facilitate emission reductions in sectors such as long-haul transportation, aviation, shipping and buildings, as well as in chemicals and steel manufacturing.