The installation of the first of 62 wind turbines equipping the Saint-Brieuc wind farm was carried out on 11 May by Siemens Gamesa Renewable Energy, contractor of Iberdrola. This operation was carried out from the jack-up vessel Brave Tern of the Norwegian company, Fred Olsen windcarrier.
The first wind turbine of the Saint-Brieuc wind farm was installed on position number SB44, located on the northern part of the site. Thanks to this, Brittany acquires its first offshore wind turbine.
“The successful installation of the first offshore wind turbine at the Saint-Brieuc wind farm represents a great milestone for Brittany and for the project. It means that we are entering the final stretch of the project, which will lead to the massive production of renewable and carbon-free energy for Bretons. After more than a decade of efforts and commitment from the Brittany region, local stakeholders and Iberdrola teams, this first wind turbine manufactured in Le Havre and equipped in Brest is also the culmination of a great industrial adventure, of which we can all be very proud,” said Emmanuel Rollin, Managing Director of Iberdrola France.
The installation phase of 62 wind turbines has now begun. This starting point is decisive as it is emblematic of the last phase of the farm’s construction.
The installation vessel Brave Tern will carry out several iterations in the coming months from Le Havre, each time with the constituent elements of four wind turbines on board.
The wind turbines of the Saint-Brieuc wind farm are being manufactured in France, on the industrial site of Siemens Gamesa Renewable Energy, located on the port of Le Havre. On this dedicated site, about 900 jobs have been mobilised for their fabrication and assembly.
The towers of the 62 wind turbines were previously equipped by the company Haizea Wind on the Brest polder. This new industrial activity continues to mobilise about 40 on-site jobs for the mechanical and electrical assembly of all the internal elements.
At sea, the 90-m-high tower of the wind turbine is first raised from the barge and then lowered by crane onto the transition piece of the jacket foundation, before being fixed. In a second step, the nacelle is lifted and installed on the tower. Finally, the three blades are fixed to the rotor.
The structure installed at sea has 209 m at the tip of the blade and the rotor is 167 m dia. It is designed to best respond to the wind regime that characterises the bay of Saint-Brieuc.
For the first wind turbine, these operations were successfully carried out by the Brave Tern, a vessel specialising in the installation of offshore wind turbines. For each iteration from Le Havre to the site of the Saint-Brieuc wind farm, the Brave Tern embarks four towers, four nacelles and 12 blades.
For more news and technical articles from the global renewable industry, read the latest issue of Energy Global magazine.
Energy Global's Spring 2023 issue
The Spring 2023 issue of Energy Global hosts an array of technical articles focusing on offshore wind, solar technology, energy storage, green hydrogen, waste-to-energy, and more. This issue also features a regional report on commodity challenges facing Asia’s energy transition.