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.