Blue hydrogen production produces a significant amount of greenhouse gas emissions
Blue hydrogen is produced using steam methane reforming but incorporates carbon capture and storage (CCS) technology to reduce emissions. However, only between 45% to 70% of emissions produced during production are captured. Furthermore, carbon capture does not reduce methane leakage during transportation and storage. Blue hydrogen which captures around 70% of CO2 emissions, the high end of existing projects, produces around 6 CO2 equivalents per kilogram of hydrogen 1.