A Survey on Electrical Energy Storage Potential in South-East Europe to Support Transmission Network Flexibility

Electrical Energy Storage (EES) facilities have attracted a huge interest recently in increasing the operational flexibility of modern power systems. This interest is fueled by the integration of a high amount of intermittent renewable energy resources (RES) in the networks. This study has been performed to analyze and identify the potential of EES in providing the operational flexibility of power networks in 8 South-East European countries. For that purpose, a survey questionnaire was developed on EES, which was distributed in late 2017 and responses were collected in January 2018. The questionnaires collected information on existing EES capacities, the required amount of EES for flexible operation and the future potential of these resources. Additional key information was collected about these resources, such as the characteristics, location and network services obtained from these resources, as well as the influential market participants to provide these services in the network. This study will facilitate the cross-border management of RES by increasing the operational flexibility of the transmission network in South-East Europe.