Hydrogen colours
Blue Hydrogen - Produced using a natural gas feedstock and employing a process called steam methane reforming ( SMR )
Yellow Hydrogen - Refers to hydrogen produce through solar-powered electrolysis , emitting no carbon and using renewable energy sources
Pink Hydrogen - Generated through electrolysis that is powered by nuclear energy
Green Hydrogen - Produce via renewably-powered electrolysis , emitting no carbon ; a sustainable energy carrier for various industries
To follow the final point , Nasim explains : “ The only way to attract private investment is to have governments actively support the creation of this new branch of the global economy by pushing through regulation and policies to make it possible .”
Touching on the infrastructure point , Crotty also highlights some of the key pain points hindering further progress of a green hydrogen supply chain .
“ Hydrogen is acidic , creating challenges for transportation in pipelines ,” Crotty says . “ Transporting hydrogen over long distances also requires liquefaction , which only happens at extremely cold temperatures - hydrogen does not liquefy until -253 degrees celsius .”
38 October 2023