Large Scale H2 Production by Electrolysis Based on Renewable Electricity

Franco, Flávia; Borges, R. P.; Serralha, F. N.; Martins, Paulo; Aguiar, Ricardo; Cabrita, Isabel; Partidário, Paulo

http://hdl.handle.net/10400.26/50100

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Abstract(s)

In the framework of preliminary assessments for a European Strategic Project of Common Interest, Portugal has been discussing the setup and operation of a large-scale facility, of ca. 1 GW, for H2 production from water electrolysis, at the Sines region. The operational requirements of such a facility were analysed. Electricity is expected to be mostly supplied by dedicated wind and solar PV farms, but using excess renewable electricity available from the grid at low price under future expected conditions is likely to be an option as well. Under these assumptions, the H2 facility and associated renewable power plants were modelled using the energyPLAN software. The behaviour of this model, and in particular the electricity exchanges of the H2 facility with the grid, was analysed for periods of one year with hourly resolution, under various climatic, energy demand, and plant sizing scenarios. It is estimated that an optimal operation of the H2 facility can be achieved with a 2:1 ratio between the capacity of dedicated renewable power farms and the capacity of the electrolysers. The operation must minimize coincidence of periods of excess electricity available from the grid with the output of the dedicated renewable power farms. The main conclusions are twofold: (i) methodologically, it is shown that energyPLAN provides a useful tool for modelling the operation of such large scale H2 production facilities; and (ii) operationally, when looking forward to achieving optimal plant design and operation conditions, its electricity supply should rely on an appropriate mix of renewable sources and include interactions with the grid

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http://hdl.handle.net/10400.26/50100

Citation

Franco, F., Borges, R. P., Serralha, F: N., Martins, P., Aguiar, R., Cabrita, I., & Partidário, P. (2022). Large-scale H2 production by electrolysis based on renewable electricity. In A. Sayigh (eds), Sustainable Energy Development and Innovation, Springer, Cham, 717-722.