chapter  3
30 Pages

Hydrogen Technologies and Costs

ByPaul Ekins, Sam Hawkins, Nick Hughes

Hydrogen (H2) is often cited as the most common element in nature, but such citations do not always say that it is also reactive, and therefore in nature does not exist in elemental form, but needs to be produced from compounds that contain it. Where hydrogen is produced by fossil fuels (either through steam methane reforming (SMR) or through electrolysis where fossil fuels are the source of the electricity), carbon capture and storage (CCS) is necessary for the hydrogen to be considered a ‘low-carbon’ energy source.