SummaryEnvironmental impactOverviewCurrent production methodsNatural hydrogenExperimental production methodsHydrogen usesSee also
Most hydrogen is produced from fossil fuels, resulting in carbon dioxide emissions. Hydrogen produced by this technology has been described as grey hydrogen when emissions are released to the atmosphere, and blue hydrogen when emissions are captured through carbon capture and storage (CCS). Blue hydrogen has been estimated to have a greenhouse gas footprint that is 20% greater than burning gas or coal for heat and 60% greater when compared to burning diesel for