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WIND ENERGY Nowadays, we are moving towards a future with clean energy sources to reduce air pollution, and protect the environment, our living places, and animals. Those clean energy sources can be mentioned as solar energy, wind,....... What I am most impressed with is wind energy with giant wind turbines in the middle of the fields or in the vast ocean with blades rotating quickly. Wind turbines near the city of Flagstaff But there are also disadvantages in completing and moving a wind turbine. The cost of manufacturing, assembling, and moving a wind turbine is currently quite high, making investors hesitant to embark on this clean energy model. According to surveys, the cost of installing, operating, and manufacturing a wind turbine is about 1,300,000 USD per megawatt, and to recover the investment, it takes at least 4 years, and the longest is 20 years. But in recent years, engineers have invented, to impr...