Given the growing interest in electric mobility, and analyzed its problems, we can notice that the most relevant is the one related to autonomy. For this reason, the development of innovative recovery systems, together with batteries, is essential for the advent of electric mobility. Analyzing deeply the method of energy recover we can see that the majority concern with the recovery of the kinetic energy, in particular of two methodologies: Regenerative Braking System and Energy Harvesting Suspension, the first is the best known (in fact in the last years was also commercialized) while the latter is less common, and so, the most interesting to study and develop.