Wind turbines and noise

The sounds emitted from wind turbines can either be mechanical, from internal equipment such as the gearbox or yaw drive, or aerodynamic, from air moving past the rotor blades. Modern turbine designs have effectively reduced mechanical sound through sound proofing so that the “whooshing” aerodynamic sound is what can normally be heard.

Permitted sound levels, including the distance between turbines and the nearest house, are determined at a local level. All wind farms must comply with operating rules laid down by the appropriate authorities, normally based on national recommendations.

Thousands of wind turbines have been installed around the world, many in close proximity to other types of land use, with minimal sound issues. The wind industry seeks to be a good neighbour and addresses concerns where they arise.