§ Mr. Peter Ainsworth
To ask the Secretary of State for Trade and Industry what assessment she has made of the effects of low frequency noise from wind turbines on human health; and if she will make a statement. 
§ Mr. Timms
Currently planning authorities take into account the recommendations and methodologies for the measurement of noise in the case of wind farms, as set out in the report "ETSU-R-97: The Assessment and Rating of Noise from Wind Farms".
The methodologies applied during the planning application stage to satisfy authorities that noise emission levels will fall within accepted levels do not include the measurement of infrasound as we are not aware of any scientifically validated evidence that infrasound emitted from wind turbines affects human health.