25.04.2014

Finland issues guidelines for measuring wind turbine noise

Guidelines can be used to verify the sound power level of a wind turbine guaranteed by the manufacturer.

Finland’s Ministry of the Environment has issued three guidelines for the modelling and measurement of the noise generated by wind turbines. The guidelines are called “The modelling of wind turbine noise”, “The verification of noise emissions by measurement” and “The measurement of the noise level in an affected location”.

The guidelines are used for calculating the safety distance between wind turbines and areas exposed to their noise, such as residential areas. The modelling helps to determine the noise zones resulting from wind turbine operations and the noise levels in different observation points.

Improved reliability and transparency

The guidelines can be used to verify the sound power level of a wind turbine guaranteed by the manufacturer. This will improve the reliability and transparency of noise measurement, according to the Ministry of the Environment.

The government of Finland is currently preparing a decree on wind turbine noise levels which will define the decibel limits and the areas where the guidelines will be applied. The guidelines support, for their part, the implementation of the decree and make it possible to measure whether the noise level of a wind turbine exceeds the decibel limits defined by the decree.

Source: Ministry of the Environment