Comparative techno-environmental analysis of grey, blue, green/yellow and pale-blue hydrogen production

Hydrogen holds immense potential to assist in the transition from fossil fuels to sustainable energy sources, but its environmental impact depends on how it is produced. This study introduces the pale-blue hydrogen production method, which is a hybrid approach, utilizing both carbon capture and bioenergy inputs. Comparative life cycle analysis is shown for grey, blue, green and pale-blue hydrogen using cumulative energy demand, carbon footprint (CF), and water footprint. Additionally, the integration of solar-powered production methods (ground-based photovoltaic and floating photovoltaic (FPV) systems) is examined. The results showed blue hydrogen [steam methane reforming (SMR) + 56% carbon capture storage…

• OR
  Ontario Research Foundation
• CF
  Canada Foundation for Innovation

  Award: 39702
• NS
  Natural Sciences and Engineering Research Council of Canada