Portable hydroelectric micro power station Banki type 100 Watt electric power. Prototype born with the intention of exploiting to the maximum the net jump of the watercourse, in this regard the optimization of the geometrical configuration profile of the impeller inside the turbine has been studied and realized with maximum attention to the inclination of the blades in order to exploit to the maximum the mass of the incoming fluid. Power 100 Watt at 28 V net jump 9mm flow rate 2.3 l/sec. The study of the device was made with the participation of the company IREM spa.