Pure and Plug-in-Hybrid electric vehicles are promoted in several countries because they can provide an appropriate technological answer to EU's energy and environmental goals. But quantifying their benefit is complex since electromobility poses specific challenges in terms of time scale, sectors coordination and infrastructure. The overall objective of the EV-STEP project was to quantify some of the technical and economic conditions of the development of electrified mobility in Europe by 2030 and beyond. In complement to the EU scale evaluation based on the TIMES pan EU and IMACLIM-P models additional case studies were defined in the EV-STEP project’s methodology to investigate dedicated local issues with a higher level of technical detail. The EV-CAP model developed within EV-STEP is described in the first part, the second part reports insights on the potential load curve impact drawn from the local case study of the Paris Ile de France Region.