Wind Energy Essay

357 WordsMay 14, 20132 Pages
An infinite source of clean power: Canada’s bountiful resource. How does it work? Wind turbines generally consist of large blades mounted on tall towers attached to a horizontal shaft. As the wind blows, these blades cause the shaft to turn. The shaft is attached to a generator located inside the head, or “nacelle” of the turbine, which generates electricity. Cables carry this electrical current to transmission lines that then carry it to homes and businesses. Modern turbines rotate quite slowly, at an average speed of between 18 to 20 revolutions per minute. So how much wind do we have in Canada? We have more than we could ever use, and it’s free. Our vast landscape, our three windy coastlines, the plains and mountains all contribute to this endless resource. Canada has still only scratched the surface of its massive wind energy potential, which currently powers over 1 million Canadian homes. Tomorrow we hope to do even more. Countries like Denmark already get over 20% of their electricity from wind. If we did the same in Canada, we would have enough wind energy to power 17 million homes! As long as the wind continues to blow, there is a great future in wind energy. Wind Power is Reliable. The wind turbines that you see today are the result of decades of research and development. Thanks to these efforts, modern turbines are highly efficient and a typical unit alone can generate enough electricity to power over 500 homes. The science of wind turbine placement has advanced a great deal, too – nowadays, the output of a wind farm can be predicted accurately well before a shovel hits the ground. As long as there is wind, there will be wind power. With good placement, a modern wind turbine will typically produce electricity 70 percent of the time. Enhanced technology and design improvements have also played a part in increasing the reliability of wind

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