10. Modelling and analysis of scaled-up hydrogen electrolysis plants

April 2nd, 2026

Ridma Wijethunga, Behrooz Bharani, and Mehdi Ghazavi Dozein - Monash University, Melbourne, Australia

Modelling and analysis of scaled-up hydrogen electrolysis plants

  • Massive scaling up of hydrogen production through water electrolysis (from several megawatts to gigawatts) is crucial to meet the growing global hydrogen demand and net-zero future targets.
  • At these scales, hydrogen production can be achieved by interconnecting numerous electrolysis stacks and allocating power across them in a controlled and coordinated manner.
  • This research investigates the key factors that matter when scaling-up of hydrogen electrolysis plants and examines the scale-up requirements.
  • The proposed scaled-up hydrogen electrolyzer (HE) model captures the operational constraints, including partial-load and ramp-rate limitations.
  • The findings of this study should be considered by system operators and project developers when planning system support services from scaled-up electrolysis plants.
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