E.DSO is the key-interface between Europe's DSOs and the EU Institutions, and promotes the development and large-scale testing of smart grid technologies in real life situations, new market designs and regulation. E.DSO gathers 42 leading electricity distribution system operators (DSOs) in 23 countries, including 3 national associations, cooperating to ensure the reliability of Europe's electricity supply for consumers and enabling their active participation in our energy system. How? By shaping smarter grids for your future. E.DSO and its members are committed to taking on the huge challenges associated with realising the Energy Union, built on the EU's ambitious energy, climate, security of supply, jobs and growth objectives. This involves ensuring the reliability and security of Europe's electricity supply to consumers while enabling them to take a more active part in our energy system. E.DSO focuses on guiding EU research, demonstration and'innovation (RD & I), policy and Member State regulation to support smart grids development for a sustainable energy system.