chapter  11
12 Pages

Small-scale wind systems

So great is the tremendous energy in the wind that it can lay waste whole buildings, settlements and forests as it passes over the face of landscapes in the form of hurricanes, tornadoes, cyclones and their modest cousins, gales. The wind has been harnessed since antiquity to power windmills, pump water, generate electricity and cool buildings and people. The wind gains its power ultimately from the sun and wind power is essentially solar energy in another form, as it is the sun which warms air and creates the variations in pressure that drive the wind.