This wind energy is normally extracted by using a Wind mill which are installed at high or low speed wind directions. Wind mill comprises of a generator coupled with blades, once the wind flows over the blades, it is rotated which in turn rotate the shaft of the generator, so that the power is extracted as electrical energy.
The amount power generation depends on wind speed, blade size, orientation of blades towards wind and so on. By properly using the converter systems, we can extract more energy with availabe wind mills.
These future energy sources will never exhaust and forever available to meet out our energy demand.