Editorial Comment

H2 blending into gas networks for “greener” methane Facing regulatory uncertainty, competition from renewable energy and increasing calls for decarbonization, natural gas pipeline operators are studying the blending of hydrogen (H2) into their networks to produce lower-carbon methane and test their equipment’s capability for handling H2/methane blends. In Europe, Australia and the U.S., trial projects are studying blends of 5%–20% H2 and methane for use in regional gas networks. For example, a group of 23 European gas infrastructure companies plan to build a dedicated, affordable H2 transport network from modified gas infrastructure. This project, referred to as the European Hydrogen Backb