[en] This publication contains a set of articles proposed by researchers and political, economic and industrial actors involved in or concerned by the development of smart grids and their different aspects: emergence of a more social engineering, the situation of the French smart grid sector, the example of a start-up (GridPocket), the roles of start-ups and small companies, the importance of smart grid for territories, the commitment of the French State, France as a leader of smart grids at the European scale, the support of the Commission for the Regulation of Energy (CRE) to the development of smart grids, the digitalisation of the electric transport grid, the challenges of energy transition, smart grids as a new challenge for the electric power sector, industrial challenges for the development of smart grids, a new definition of energy efficiency, the development of energy storage in smart grids, smart building in a smart city, supporting digital transition in territories, the role of institutional investors, new risks associated with the complexity of smart grids