This report, "Study on energy storage – Contribution to the security of the electricity supply in Europe," was prepared by Artelys and Trinomics for the European Commission. It examines the role of energy storage in enhancing the security of the electricity supply in Europe. The report is available online and was published by the Publications Office of the European Union in 2020. It is intended to provide information about the European Union and is subject to the Commission's legal notice. The report can be accessed free of charge by calling the Europe Direct helpline.