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Sherman County, OregonPhoto by Jamie Francis, The Oregonian
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Wake effect at Horns Rev wind energy facility, DenmarkAt wind farms where many towers are clustered together, turbulence generated by the massive blades can degrade the performance of other windmills by as much as 10-20 percent. The same turbulence can also trigger vibrations in turbines downwind, leading to component fatigue, excess maintenance costs, and premature part failure. The turbines' wake effect is clearly seen at the Horns Rev offshore wind farm in the North Sea west of Denmark.
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Harrow Wind, Essex, OntarioThe AIM Harrow Wind Farm in Essex, Ont., includes 24 turbines, each requiring a massive concrete pedestal base like the one pictured. (Tom Taylor/CBC)
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Burning wind turbine in Uelzen, GermanyDec. 2, 2009 - A wind turbine burns in the German city of Uelzen. The fire on the 130 meter tall turbine caused €750,000 in damage and is believed to have been caused by a technical defect. - DPA
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Pronghorn and wind turbines near Medicine Bow, Wyoming. JONATHAN THOMPSON
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Locust RidgeLocust Ridge, Mohonoy City, Pennsylvania - by courtesy of Annette Smith
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Locust RidgeNo trespassing - Locust Ridge, Mohonoy City, Pennsylvania - by courtesy of Annette Smith
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Record Hill constructionClearance and road building for Record Hill wind project in Roxbury, Maine
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Record Hill constructionClearance and road building for Record Hill wind project in Roxbury, Maine
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Record Hill constructionClearance and road building for Record Hill wind project in Roxbury, Maine
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Record Hill constructionClearance and road building for Record Hill wind project in Roxbury, Maine
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Broken blade on Poggi Alto, Scansano, ItalyThe blades of all ten turbines (2-MW Gamesa G90's) on Poggi Alto near Scansano, Italy, were repaired in the summer of 2009. This one did not survive the first storm. Photo by courtesy of Gail Mair.
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