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Aren’t wind turbines noisy?

April 26, 2017wind turbines

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Aren’t wind turbines noisy?

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There are two basic design platforms for turbines – Horizontal Axis (Propeller) and Vertical Axis (Various designs with the rotation occurring in a vertical plane). Horizontal Axis Wind Turbines or HAWTs tend to be the noisier of the two by far, due to the speed of the rotation of the blades relative to the speed of the wind. Even HAWTs that claim to be “quiet” produce quite noticeable sounds. Our turbine, a Vertical Axis Wind Turbine or VAWT is noiseless against background sounds. This is due to our ability to have a Tip to Wind ratio of 1:1. What this means is that the rotor spins at the same relative speed as the wind blowing through it. As there is no “slapping” of the wind against the blade because of this, no noticeable sound is produced.