Electrolytic cell device comprising plurality of electrolytic cell modules and system for controlling operation of electrolytic cell device

An electrolytic cell device comprising a plurality of electrolytic cell modules and a method for controlling operation of the electrolytic cell device are provided. The electrolysis cell apparatus includes a system including a processing unit and configured to determine, for each of a plurality of electrolysis cell modules, an electrolysis cell module setpoint at which the electrolysis cell module is to operate, and control operation of each of the plurality of electrolysis cell modules at the respective electrolysis cell module setpoint. The determining includes inputting data representative of an operating characteristic of each of the plurality of electrolytic cell modules to a processing unit and the processing unit executing an optimization program outputting an electrolytic cell module setpoint, the optimization procedure includes optimization for one or more of total electrolysis cell device efficiency, total electrolysis cell device lifetime, lifetime of each electrolysis cell module, operational safe