The ongoing transition of the energy system is accompanied by digitalization activities, enabling new applica-tions. This results in a fragmentation of existing platforms, protocols, and standards. Therefore, interoperability among various platforms as well as cross- domain interoperability must be ensured. The usage of ontologies provides an opportunity to address cross-platform and cross-domain interoperability. PARMENIDES aims to develop a new ontology by extending existing ontologies to provide a knowledge base, with a focus on the elec-tricity and heating domain for buildings, customers, and energy communities. It will support different use cases, focusing on the utilization of Hybrid Energy Storage Systems (HESS). Besides the representation of storage technologies, information about energy community customers, their behaviours, and components including their relation will be part of the ontology, providing a standardized vocabulary of the domain of energy communities. This further includes technical, economic, regulatory, behavioural, and social constraints to be considered in operation. To support a number of use cases, a new generation of innovative Energy Management Systems (EMS) will be developed. This system will be capable of using ontology as a knowledge base. This will enable a very generic software design and ensures the scalability and replicability of the solution. As a framework for the integration of the EMS, PARMENIDES will define an information and communication architecture, enabling an interoperable, reliable, and secure exchange of data and instructions. The developed EMS will be demonstrated in very diverse pilots in Austria and Sweden. The Austrian pilot will address energy communities with different storage technologies, the Swedish pilot will focus on flexibility from a very short time scale through innovative heat pump control to electrical and thermal batteries and seasonal storage through geothermal borehole heat exchangers.

R2M solution is the exploitation manager of the project. – Analysing the rapidly-evolving smartgrid market environment, – guiding the development of the exploitable results of the project – designing innovative business models in alignment with the EU BRIDGE BM working group – and defining the strategies that will accelerate the time to market for the PARMENIDES solutions