The higher the costs of fuel go, the more urgent the search for alternative energy becomes. Wind energy is one such source, and the public eye has settled on the efficiency of wind farms. The provision of energy from wind is a clean process, and of course wind is an inexhaustible source of power. Solar energy is the genuine source of wind power, since wind is produced by variations in ground temperature and the ground is heated by the sun. The wind is then channeled to create electrical energy.
A lot of countries are nowadays employing wind farms as a means to completely use what power can be produced by the wind. Working like propeller blades but in reverse, the power of the wind is gathered by the big blades of many wind turbines that have been set up in a suitably windy location. These farms are able to generate electricity in huge amounts, when the wind turbines work in concert. A familiarity of the principles involved in wind farms will exhibit their possible effectiveness. The blades are fixed on a shaft, and when the wind blows, it turns the blades and hence the shaft. The turning of the shaft cranks a generator from which action electrical energy then results. Using the power inherent in the flow of water rather than wind, hydropower is made in the same fashion.
Adequate energy for a town or bigger area requires a lot of turbines, because one is barely enough for a house or little farm. The large energy yield possible from a wind farm is based on the collective capability of several turbines grouped together. The electricity produced is sufficient for running an entire town when you store it on an existing utility grid or in special large-scale battery cells. Today wind turbines are so sophisticated that they can utilize wind coming from any direction, even when it is from inconsistent, variable angles.
Larger turbine blades and taller turbines also make for enhanced efficiency. Since there are numerous factors that must be analyzed, it is hard to determine the exact efficiency of wind turbines. There is no constant, when it comes to wind farms, because they vary so much in terrain, size of turbines, and the amount of wind. However, the typical turbine converts approximately 20% of the power in wind to electrical energy. When the wind is blowing between 5 and 20 mils per hour, that is when the production is the most economic.
Wind power that has an efficiency rating of twenty percent is higher than solar by five to seven percent, but solar is much more constant than wind. Wind technology is coming along, and when put side by side with other renewable energy sources, it is favorable. Amongst alternative energy sources it has become important, but has not yet found universal favour. Among the leading nations in the use of wind power is Germany.