Wind Turbines

    Wind power was discovered long ago when people started using windmills, which pumped water and ground grain. This would be the basis for the modern wind turbine. The wind turbine today takes the energy of the wind and transforms it into electricity. The wind turbine is simple. The wind spins the rotor, which is connected to the main shaft. The shaft spins the generator and creates electricity. The wind turbine produces more energy when it is higher up from the ground. The turbine catches faster and less violent wind. A single wind turbine is usually enough to power a single home. When turbines are placed on an electricity grid, the electricity generated is more widespread. Miniature wind turbines are used to power a single home. In a way, the wind turbine works like a modern Toyota Prius. When the driver of the Prius brakes to a stop, the electric battery of the car is charged. When the wind spins the rotor of the wind turbine, the generator is charged and therefore creates electricity.  Similar to solar power, wind power is virtually an infinite source of energy. Recently, scientists have been trying to increase the efficiency of the turbine blades. The new technology will not just increase the efficiency of the blade, but the entire wind turbine despite of any weather conditions. The future technology may also reduce the turbine's noise and amount of vibration. 
    Faster winds equal more energy. Higher altitudes equal faster wind. Scientists are planning Airborne Wind Turbines for the future.  As the name suggests, these wind machines will be airborne. It is said that wind speed at 9,000 meters in altitude is up to 20 times faster than wind speed at sea level. Some scientists use giant kites called laddermills as plans, and other theorize helium balloons or actual flying turbines. Aerospace engineers at Iowa State University are experimenting with double-rotor wind turbines. They have concluded that one normal sized rotor and one smaller rotor is the best fit, rather than two same sized rotors. 
    An inventor from Sri Lanka, Leelananda Jayasuriya came up with another new design for the wind turbine, called the lateral axis wind turbine. The Sri Lankan thinks his design is safer and more efficient than the designs out there today. First of all, his design can rotate, so it can adjust itself to the wind direction. It can also reduces noise and is safer for flying animals. His design can still generate up to 20 megawatts of power. 
    Wind Turbines are being installed everywhere. The Eiffel Tower was recently installed with wind turbines, and Paris installed tree-shaped wind turbines.  
 

Interesting facts about wind power
- Wind power is the fastest growing electricity producing source in the world.  
- Nearly every single wind turbine in the world is installed on private land. (95%)
- Like most types of renewable energy, the cost of wind turbines is slowly decreasing to make wind power a more cheap and everyday energy source. 
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