European grid operators scale up hydrogen plans Apr 14, 2021 7:30:am Summary The hydrogen network is now expected to be almost 40,000 km in size by 2040, involving 23 European gas system operators. by: Joseph Murphy European gas system operators behind the European Hydrogen Backbone (EHB) initiative have significantly expanded the scope of their plan to establish a continent-wide hydrogen network, the companies said on April 13. The EHB p... Posted in: