The Gamesa G128-4.5 MW wind turbine, from Gamesa, near Jaulín, Zaragoza, Spain, is a wind turbine with the largest rotor, which surpasses with that of the Enercon E-126 by . It is the prototype of this model. The rotor is fixed on an 81, tall tower consisting of concrete and steel. The turbine has a generation power of 4.5 MW.[1]