Does the operation of a wind turbine produce infrasound/low frequency noise?
Infrasound/low frequency noise emissions were characteristics of some early wind turbine models. This has been attributed to early designs in which turbine blades are downwind of the main tower. This phenomenon does not occur with upwind turbine technology. Modern designs of wind turbine generators generally have the blades upwind of the tower (the rotor facing the wind). The basic advantage of upwind designs is that one avoids the wind shade behind the tower. There is no evidence that the current (upwind) turbine technology presents any problems related to the generation of infrasound/low frequency sound energy.