International audienceSmart micro-grid has emerged as a new infrastructure to further enhance existing power grid through the integration of renewable energy sources and communication technologies. In fact, smart micro-grid infrastructure is characterized by renewable energy integration, automatic metering infrastructure, distribution automation and complete monitoring and control of the entire power grid. The monitoring is based on a set of sensors, which are used for collecting data production, data consumption and weather conditions. These data should be transmitted by a wireless network to a main location or sink for visualization and analysis. For this reasons, it is important to develop a self-configured wireless sensor network able to handle efficiently the massive amount of data. This paper investigates the ZigBee network in the context of micro grid by comparing two routing topologies