The IDE4L project will define, develop and demonstrate the entire system of distribution network automation, IT systems and applications for active network management. Active distribution networks will utilize distributed energy resources (DERs) for network management including both real time operation and long-term network planning viewpoints. DERs consist of aggregated distributed generation, demand response and other controllable loads.The starting point of development are existing distribution networks, their management systems, future expectations of penetration of renewable energy sources and high expectations of customers for continuity of service. The research and development work done in the project integrates many existing automation and IT systems utilizing available standard protocols in an innovative way and develops new applications based on that system.Demonstrations of integrated automation system and applications will be realized in real life networks in different parts of Europe where are connected large and small scale PV, wind power, heat pumps and EVs located in urban and rural areas. The outcome of the project will be applicable in very near future in all over Europe.Integrated distribution network automation system will be capable of monitoring, controlling, managing fast changing conditions and integrating large number of DERs in distribution network. Technical solutions utilizing the automation system will enhance the reliability of distribution network by improving fault location, isolation and supply restoration, will increase the hosting capacity of distribution network for renewables by managing network congestion with DERs, will optimize the operation of DERs by aggregating DERs and coordinating these with distribution network management, and will monitor dynamic behaviour of distribution network for system management.