Low Carbon Hydrogen Well-to-Tank Pathways Study

A report for Zemo Partnership prepared by Element Energy

Project Aims

  • Hydrogen is a potentially vital fuel in the UK’s plan for meeting its decarbonisation
    targets in the mobility sector for 2050. However, 99% of UK hydrogen today is ‘grey
    hydrogen’ and is not low carbon.
  • In order to effectively appraise hydrogen’s value in decarbonising transport and
    develop appropriate policy, UK decision makers need a clear and transparent
    evidence base of hydrogen’s lifecycle emissions. This work has been instigated due
    to a lack of data specific to the UK on the carbon intensity (GHG emissions) of
    different low carbon hydrogen pathways.
  • The study had the following aims:
    • To identify the range of hydrogen production, distribution and dispensing
      options that are emerging
    • To provide an exhaustive, transparent and up-to-date analysis of the
      emissions and energy use related to different low carbon hydrogen pathways
      (Well to Tank), considering feedstocks, production, distribution and
    • To identify the key sensitivities influencing the carbon intensity of the
      pathways considered
    • To create an Excel model to contain this data and allow users to easily
      explore the impact of a range of scenarios and sensitivities on full H2
      pathway emissions
    • This work will serve as the evidence base for decision and policy makers


This report provides a clear overview of the key findings and was delivered by Element
Energy for Zemo. The study benefited from input from Zemo members and the wider
UK supply chain.

Want to know more? Download the full report.

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