Ensuring the semantic interoperability issues between heterogeneous systems is very challenging task.  Using a common semantic data model, is a central element to ensure this semantic interoperability. In fact, a common semantic data model allows heterogenous systems to share the same meaning of entities that enables them to interoperate. Ontologies are recognized as the corner stone element to build a common semantic model. Indeed, ontology allows to describe domains in unambiguous manner allowing experts to reach a consensus in a specific domain. Furthermore, ontologies could be shared and reused by different actors. SAREF and CIM are examples of ontologies in the energy domain that are considered as standards. Reusing standard ontologies foster the interoperability between systems. However, existing ontologies in the energy domain do not cover yet all needs assessed from the different use cases of the Platoon project. Consequently, there is need to design a new ontological module to cover the Platoon project needs.

In the talk, we will review a set of general approaches for developing ontologies that are useful for multiple downstream tasks and present an inventory of existing ontologies in the energy domain. This talk will introduce an overview of the methodology which incorporated the most relevant principals that could be applied to construct and to reuse ontological models. The main stages of this methodology, after examining the existing semantic data models (ontologies) of the energy sector, are: (1) Ontology Requirements Specification, (2) Ontology Analysis, (3) Overview of ontological modules, (4) Interaction with stakeholders and Ontology formalization. Finally, we will describe some semantic data models that are designed in PLATOON project.