This article presents a data modeling to handle the power flow in a smartgrid. The power flow is studied through RenewSim. It is a simulator dedicated to supply a Data Center which is simultaneously fed by renewable and non-renewable energy sources. Nowadays, the use and optimization of the energy consumption of Data Centers are very broad research areas. The development of energy called " green " and how to use them smartly, becomes an inevitable problematic because of the current ecological considerations. RenewSim is based on the use of several energy sources (electricity supplier, solar panels and batteries). This simulator has a center decision controller. It aims at make clever decisions for the use of heterogeneous sources. The contribution of this article is a data modeling which allows the power redirection by labeled and prioritized the different sources of energy. The priorities and the labels are presented and the results obtained are exposed.