This deliverable describes the selection of some highly relevant representative use cases with regard to the Smart Grid concept for further use in the SEGRID context. These use cases highlight relevant scenarios and functionalities to be developed within the emerging Smart Grids while taking full potential of the installation of the Smart Grid components in the customer premises, and in the primary and secondary substations.

First, a state-of-the-art analysis is performed. An overview on the Smart Grid architecture and representative use cases addressed in different European initiatives and projects is provided. The related work study focuses on adopted use cases in similar security related projects and on outcomes of the work done by international standard development organisations and other national and international research & development projects.

The five selected SEGRID use cases are outlined by providing a short description, identifying the actors, the stakeholders, the information flows as well as the assumptions and pre-conditions for the specific use case. From that, the use case requirements are derived for each specific use case with the aim to ensure that the basic properties and objectives of the use cases are not jeopardised throughout the SEGRID project research and development.

The SEGRID use cases are key to facilitate a thorough analysis of their potential cybersecurity and privacy vulnerabilities and to investigate and develop mitigation strategies. The use case descriptions will serve as a base for the demonstration of the vulnerabilities and their potential impact for the different stakeholders involved, if exploited, but also facilitate the implementation of the SEGRID test environment – the SITE.

D1.1 – Architecture and design for the SEGRID use cases