The European Battery Industry represented by EUROBAT has put together this White Paper in order to provide detailed information on the use and advantages of utilising Battery Energy Storage (BES) solutions for renewable energies. It aims to enhance knowledge about batteries and how they can contribute to society in the context of the European Union’s (EU) ambitious energy policy of increased efficiency and reduced CO2 emissions. This paper acts as a reference document explaining the contribution of the different battery technologies to the various grid configurations. More targeted publications will be issued by the Industrial Battery Committee (IBC) Taskforce, using this background document as a basis to present the key advantages of using BES in specific applications. This White Paper does not cover issues relating to sustainable transportation, such as the value of electric vehicles' batteries at end-of-life.