Optimal design and dispatch of hydrogen systems integrated in combined heat and power plants for improving hydrogen economy through excess heat and electricity grid services

Pietro Elia Campana, Bengt Stridh, Jakub Jurasz, Jenny Lindborg, Kristina Häggström Wedding and Amanda Kander

Applied Energy, 2025, vol. 398, issue C, No S0306261925011080

Abstract: Renewable hydrogen is a promising energy carrier that facilitates greater renewable energy integration while supporting the decarbonization of the industrial and transportation sectors. This study investigates the optimal design and operation of two hydrogen-based energy systems. The first energy system comprises an electrolyser, compressor, and hydrogen storage system. It aims to supply hydrogen as a drop-in fuel for a future potential hydrogen fleet. The electrolyser provides excess heat and oxygen for a combined heat and power (CHP) plantand ancillary services to the grid for frequency support. In the second energy system, the hydrogen stored in the hydrogen tank is used by a fuel cell or gas turbine to sell electricity to the grid following price signals. The optimisation algorithm developed in this study finds the optimal capacities for the hydrogen production and storage systems and optimizes the hourly dispatch of the electrolyser.

Date: 2025
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DOI: 10.1016/j.apenergy.2025.126378

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