Green energy and storage integration - the case study of Ikaria

Recently there is a global effort to reduce carbon dioxide emissions and modernize the electric power systems (EPS) in order to provide green and stable energy to consumers, while also taking cost minimization into account. To achieve this, production from Renewable Energy Sources (RES) in tandem with Energy Storage Systems (ESS) is being proposed and integrated to EPS around the world. However, the dispersed and intermittent nature of RES, the differing ESS technologies, the variety of landscapes on a local level and the fact that those solutions must be incorporated into the existing infrastructures, impose the need for further studying the optimal implementation of those new technologies without power disruptions, while ensuring grid stability through the provision of ancillary services. The Hellenic Electricity Distribution Network Operator (HEDNO) is responsible for the wider Greek distribution network, as well as the Non- Interconnected Islands (NIIs). The NIIs in particular can be considered excellent test beds for new technologies and innovative solutions, since they are insular microgrids and therefore, can provide immediate feedback on implemented changes. This paper will focus on the island of Ikaria; mainly on the effort of modernizing the grid management as well as the possibility of expanding upon the lessons learned to the rest of the Greek electricity grid.