Large scale hydrogen production using a grid-connected renewable-based water electrolysis system in different world climates

Green hydrogen can be produced via water electrolysis using various renewable energy sources. In this work, the performance of a grid-connected wind turbine (WT)- photovoltaic (PV) water electrolysis system for large-scale hydrogen production is investigated. A large dataset covering a 50 MW-50 MW WT-PV hybrid renewable hydrogen production system in six localities characterized by different climatic conditions was created performing dynamic simulations by means of TRNSYS software. Various dimensionless indicators are discussed in detail for the standardization of performance indicators for renewable-based hydrogen production systems, such as the PV and WT satisfied load fraction SLF, the PV, and WT utilization factor UF and the grid energy interaction factor GEIF. These indicators define, respectively, the electrolyzer load portion satisfied by the WT and PV, the generated WT and PV energy portion supplied to the electrolyzer load, and the quantity of energy exported to and imported from the grid.