The tender specifications set the main objective: build a 480 to 500 MW offshore wind farm within a pre-defined perimeter of 180 km².
Within these bounds, and with technical and environmental optimisation in mind, Ailes Marines designed a minimum impact project.


Ailes Marines considers that this is the best compromise between:

  • The technical and economic feasibility of the project
  • The expectations and requests expressed by local stakeholders in the consultation that Ailes Marines conducted, with the obligation to incorporate pre-existing activities (fishing in particular)
  • Including environmental and landscape considerations related to the project


In order to reduce the footprint of the wind farm on the maritime space, Ailes Marines is suggesting a 75 km2 installation zone, or 42% of the area in the tender. This is possible due to the decision to use machines that are powerful (8 MW each), and thus less machines.


This choice of location makes it possible to:

  • Avoid the areas that the fishing industry prefers—None of the wind turbines will be placed in the most intense zone for scallop fishing, a crucial business for the economy in the Bay. The wind turbines will also be aligned and positioned in a way that is compatible with various fishing practices (the northwest by north/southeast by south orientation, and at least 1,000 metres between the turbines).
  • Limit the impact on the quality of the seascape of Côtes-d'Armor—To limit the visibility of the wind turbines, 77% of the machines will be installed at a distance of over 20 km from the coast. The closest wind turbine will be installed 16.3 km from Fréhel Cape.
  • Not install any wind turbines in the Natura 2000 area (from Cape Erquy to Fréhel Cape), in order to safeguard the environmental considerations of the Bay.


carte zone retenue

Map of the installation area