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Accompanying measures

Experimenting with a collision avoidance system for birdlife

Objectives and methodology

This accompanying measure concerns the testing of a system to avoid bird collisions with the blades of operating wind turbines. The system consists of a network of cameras, which detect the trajectories of different categories of birds, connected to a sound scaring system, which is activated once a bird enters a risky perimeter around the turbine rotor. Various systems are available on the market and have been operational for a number of years on onshore wind farms. Marine-based versions adapted to offshore sea conditions are currently being developed, however they do not benefit from as much feedback as their onshore counterparts. For this reason, the choice of system has not been fixed in the prefectoral authorization decrees.

This measure aims to test an existing system, at a rate of 3 devices each attached to a wind turbine, distributed at the south and north ends as well as in the centre of the wind farm (see figure below).

Ailes Marines has approached potential suppliers and a call for tenders will be issued shortly.

 

Location of actions

wildlife escape map
The three devices will be distributed along a north/south axis. Wind turbines n°57, 31 and 3 are currently preferred, subject to technical validation.

Planning and Status

Measure under development

The follow-up will begin when the wind turbines are commissioned for a period of two years during the operating phase of the wind farm, i.e. in 2024 and 2025.

All accompanying measures

Follow-up actions

Reduction measures

Compensation measures