Energy efficiency is the topic of the day in the world of public transport. In addition to the protection of the environment, economic interests are at the center in the operation of urban transport systems: every kilowatt-hour saved is worth doing it.
New approaches combined with modern technologies allow to reinject surplus braking energy into the overlaying medium voltage grid or to store it on board of the train or in wayside energy storage systems.
These new possibilities make it possible to achieve high targets in terms of energy savings.