A turbine is turned by some fluid: Water in a hydroelectric facility, steam in a conventional power plant, or perhaps wind. The turbine is mechanically connected to a generator, possibly on the same shaft, or perhaps through a transmission of some sort. The generator converts the mechanical motion to electricity, usually by moving a conductor through a magnetic field.
It is about 180 feet tall. It has three spinner thingys that turn when wind moves it. It transforms the kinetic energy of the wind into electrical energy to power your household items.