Electric mobility is promising in terms of lower CO2 emissions. In order to analyze its impacts effectively, both on the electric grid and the transportation system, agent-based models emerged as a viable option. Such methodology will be applied to understand the potential impact of electric mobility in great Montréal area, Canada. A scenario reproducing the current transportation system will be created, calibrated, and validated. It will be coupled to a power supply simulation developed by Hydro-Québec research center (CRHQ), creating a model of the dynamics between the two systems. Several simulation scenarios will be defined according to technical characteristics of the supply as well as to users’ behavior. Simulations will allow optimizing the supply side given demand sensitivity and feedback from the energy model. The project aims at creating a tool that combines highly detailed simulation of the transportation system and of the power supply and producing a large and solid knowledge on the potential impacts of a large diffusion of EVs in great Montréal area.