This report discusses the design and implementation of a subsystem required for an energy system integration demonstrator. The purpose of this subsystem is emulating energy systems using physical table-top model representations. This system has been realised using a Raspberry Pi 3B+, which communicates information using the IኼC protocol to the table-top models. The physical models can actuate information regarding the energy systems from the Raspberry Pi with DACs, and sense realtime information with ADCs.