The major CO2 emission contribute comes in fact from transportation (24%). Of this, 24% comes from cars, trucks and motorbikes. Passenger cars account for 60% of the road transportation emissions globally. The life in the cities became poor in terms of quality due to urban traffic. The citizens have to coexist with emissions of fine dust dispersed into air that is quite toxic and potentially cancerogenous. The solution is the electric mobility. The battery run electric vehicle allow to do not produce any emission of fine dust, low down petrol consumption and reduce emission from greenhouse effect. The bad side of these is that they are fed with electricity that, nowadays, is not all produced by renewable power plants.