Ecological and environmental concerns as well as growth in demanding electrical energy have driven utilities to seek new strategies for improving performance and Smart Metering represents concepts concerning the next generation of the existing power grids, and a modern process in monitoring and controlling the grid. Through this system a huge amount of data is flooded into utilities; these data help the utility to get a thorough understanding about the grid and subscribers. In this paper, we begin with presenting Advanced Metering Infrastructure, and then we move on to analyze the architecture expanded on by OPENmeter project, to improve the architecture.