Construction work resumes on the Saint-Brieuc offshore wind farm
Kérantour-Lézardrieux / Saint-Brieuc / Paris - March 27, 2023 -
Ailes Marines announces today the resumption of the drilling and installation works of the wind farm in Saint-Brieuc Bay.
These operations will mobilize up to thirty vessels for several months.
During this period, navigation and maritime safety rules are set by prefectural decrees.
Continuation of drilling and installation of foundation jackets
The ship AEOLUS of the company Van Oord, is back on the area of the park since March 27, 2023, it has resumed the drilling and sealing of the piles on the 22 positions of undrilled wind turbines.
In addition, in the coming months, installation operations will resume on the 38 foundation jackets still to be installed.
These two campaigns take place over several months and according to weather conditions.
Installation of 62 wind turbines of 8 MW
The first 8 MW wind turbines will be installed on their foundations in the middle of the year. They will be assembled line by line.
The installation of the 62 wind turbines (masts, nacelles, blades) will be carried out by Siemens Gamesa from the Brave Tern jack up platform of the Norwegian company Fred Olsen windcarrier.
The sections of the masts of the 62 wind turbines previously equipped by Haizea Breizh in Brest will be transported to the port of Le Havre to be assembled in 3 dimensions. For each rotation from Le Havre to the Saint-Brieuc wind farm site, the Brave Tern will ship 4 masts, 4 nacelles and 12 blades. It will install them on the jackets foundations of the wind turbines.
Depending on weather conditions, they will be phased in starting in the second half of the year.
Operations controlled from the maritime coordination center
These operations are piloted from the Ailes Marines maritime coordination center located in Kerantour and in the port of Lézardrieux (22). They will mobilize up to thirty vessels for several months.
In order to inform the inhabitants and in particular the users of the sea, Ailes Marines has opened an online information space* dedicated to the maritime works. It presents the nature and organization of the works, as well as information concerning navigation, in addition to the decrees issued by the Préfecture maritime.
Inter-turbine cable weatherstripping
The inter-turbine cable burial campaign began in January. Prysmian, the company in charge of supplying and sinking the cables, is continuing the work of laying the 90 km of inter-turbine cables. Currently, 3 vessels are mobilized for these operations: the Aethra, which is making the trenches, the Ariadne for the installation and removal of the cable at the bottom of the trench and the Island Diligence for its burial. The trenching campaign takes place over several months, depending on the weather conditions.
About Ailes Marines
- 75 km2 in area
- 62 Siemens Gamesa SG 8.0-167 DD 8 MW wind turbines
- 496 MW of installed capacity
- 1,820 GWh/year of production, i.e. the annual electricity consumption of 835,000 inhabitants (including heating)