Operational Data of a 100 kW Proton Exchange Membrane (PEM) Electrolyzer: Collection 2018–2023

This data set contains detailed measurement and set point data from a 100 kW Proton Exchange Membrane (PEM) electrolyzer test rig developed at IET-4, covering the period 2018–2023 with approximately 200 individual data sets. The system was operated under a wide range of user-defined load profiles, e.g. wind power and photovoltaic (PV). All relevant operational data (~120 measurement values) were continuously recorded, including electrical characteristics (voltage and current), temperature distributions, gas flow rates, and efficiency metrics, as well as auxiliary parameters required for detailed system assessment. The data collection campaign was designed to support systematic investigations on electrochemical performance, thermal behavior, start-up and ramping dynamics, and system efficiency. It further enables research on advanced thermal control strategies [1], transient behavior during start-up phases [2], dynamic system modeling [3], data-driven operational optimization [4], and efficiency evaluation [5]. In addition, the dataset provides a robust foundation for material degradation studies, system design optimization, and the development of advanced control loops and operational strategies. More detailed information on the 100 kW PEM electrolyzer test rig can be found in the referenced publications. Information on the structure and organization of the data and the process flow diagram can be found in the the folder "Documentation".