The cost of clean hydrogen will fall to that of liquefied natural gas in a decade as global efforts to replace fossil fuels accelerate, according to Europe’s biggest operator of gas infrastructure. “Green hydrogen today is not economically competitive against alternative energy sources, which will not be the case in ten years’ time,” Thomas Baudlot, chief executive officer of energy solutions for Asia-Pacific at French utility Engie SA, said in an interview. The fuel is “very much part of the strategy of Engie.”