Wind energy is the energy derived from wind, or the kinetic energy generated by the effect of air currents, and is transformed into other useful forms for human activities.
The wind comes from the Latin word aeolicus, belonging or related to Eolo, the god of the winds in Greek mythology. Wind energy has been used since ancient times to move boats propelled by sail or operate machinery to move his mill blades.
At present, wind energy is mainly used for producing electricity through wind turbines. At the end of 2007, worldwide capacity of wind-powered generators was 94.1 gigawatts. [1] While the wind generates about 1% of global electricity consumption, [2] represents about 19% of electricity production in Denmark, 9 % in Spain and Portugal, and 6% in Germany and Ireland (2007 data).
Wind energy is an abundant, renewable, clean and helps reduce emissions of greenhouse gases thermoelectrical andalusia replace fossil fuel, making it a kind of green energy. However, the main drawback is its intermittency.
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