E-Round is a technologic traffic roundabout, born to replace common roundabout located in our cities to generate electric power through natural sources. In fact, it's able to convert wind energy, mechanical, solar and rainwater in electric energy, so we can light streets and cycles track during night hours.Part of production, will be used to irrigate the lawn and the planters of the streets. In this project we can see two innovative energy: mechanical and rainwater. The first, consists to convert mechanical vibration produced by car when its passing over particular speed bumps; the second, we uses water as a refrigerant to cool some heatsinks connected to thermoelectric plates. In this mode, energy production will start in every moment and with all weather conditions. Thanks to batteries, the production of energy is stored and used when sun go down, using PV panels as twilight. If E-Round will be installed in scattered points, we can obtain a performant coverage of the streets and save a lot of energy.