An optimization-based model is presented in this paper to conduct load shifting strategy in frame of the concept of smart grid. In this model, those factors of load management, production and store are defined. One of important features if this plan is the point that electric vehicles with capacity of V2G are considered in it. This capacity makes it possible for electric vehicles to inject power into the grid. This property can be used for load shifting, congestion management and load profiles flattening. The proposed method is tested for a sample system. The studied grid is Standard 37-Bus IEEE Grid that is a distribution grid. The function and ability of proposed method and effect of hourly prices of electricity on load curve flattening is well demonstrated in this grid.