This project proposes an architecture of a meshed DC microgrid for delivery of electrical energy in tertiary or residential building, with a central management system in a first time to distribute needs and to associate in a most effective way an intermittent renewable source of energy. It will specifically result in capacity of adaptation of the source level by the search for the most adequate topology according to the ranges of tension of loads and the level of the distribution DC bus. The originality stands in the definition of two types of nodes (the smart DC plug and the smart node) in order to manage the network in a mode of partial energy decrease or reconfiguration. Project is composed into five scientific tasks : - task 1 : Design and realization of the elementary DC smart plug component which provides the power to the final DC loads and the smart nodes that manages the power exchanges on the DC bus (power electronic), - task 2 : consumption measure, transmission and data processing for exchange between the smart plug and the smart nodes and the central management system, - task 3 development of a test platform integrating the different nodes developped (smart nodes and smart plug), - task 4 design of protocol and communication electronics for grid, PLC communication, - task 5 modelling energy management and reliability of DCgrid; simulation to estimate gains of DC microgrid solution. and one additional task for the project management. The ultimate goal is to be able in the future to remove the central management system to integrate all of the intelligence in the nodes.