Skip to main content

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

Sources:​

Footnotes​

  1. Howarth, R. W., & Jacobson, M. Z. (2021). How green is blue hydrogen? Energy Science & Engineering, 9(10), 1676-1687. ↩