This study ensures that the noise from wind turbines remains below the legal thresholds set by any regional and national regulation. It is based on the notion of sound emergence, which is the difference in noise between a wind turbine in operation and one that has stopped. The noise level is measured by taking into account the noise of nature, transport infrastructures and various activities.
The regulations require the developer not to exceed a specific ambient noise level (including the operation of the wind turbines) depending on the closest infrastructures and region. Above this noise level, the noise from the wind turbines is restricted according to the time of day.
When the park is built, a new measurement campaign is carried out to check that the park complies with the regulations. If, under certain conditions (wind speed, wind direction, time of day), the thresholds are exceeded, a noise control plan (stopping or slowing down the machine) will be put in place. This plan is included in the Environmental Authorisation application file. The study documents will be available for consultation during the public enquiry phase.