The noise of wind turbines has been reduced significantly. Improved design has drastically reduced the noise of mechanical components so that the most audible sound is that of the wind interacting with the rotor blades. This is similar to a light swishing sound, and much quieter than other types of modern-day equipment. Even in generally quiet rural areas, the sound of the blowing wind is often louder than the turbines.

A 2010 Canadian report, ‘The Potential Health Impact of Wind Turbines’, confirmed that noise level emissions complied with the World Health Organisation (WHO) recommendations for residential areas.

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