This deliverable showcases a new co-simulation use case created according to the NFDI4EnergyTask Area 6 requirements. We started with an analysis of existing scenarios in the KIT EnergyLab. None met all of our requirements, therefore, we designed a new use case to support morecomplex simulation scenarios based on the existing software and hardware resources at the EnergyLab. The new use case integrates a Real-Time Digital Simulator (RTDS) target, a building model,and a Power-Hardware-In-the-Loop (PHiL) system. We will connect the different components withVILLASnode. In this deliverable, we describe the new co-simulation use case from three differentlayers: the Energy Research Layer, the Research Enhancement Layer, and the Meta Research Layerthat demonstrates the specific role of Research Data Management (RDM) tools and services inco-simulation and energy research domain.