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Saint Brieuc Offshore Power Plant, one of the largest commercial-scale offshore wind schemes in France, is on track for completion by the end of 2023. This was revealed recently by the Spanish utility Iberdrola SA.
So far, a total of 35 of 62 turbines and 51 of 62 jackets at the project site off the coast of Brittany have been installed. The facility has already been connected to the grid by Réseau de Transport d’Électricité, the country’s transmission system operator. In early July this year, the first turbines started feeding electricity into the grid following the successful completion of their testing phase.
Electricity is collected by an offshore electric substation close to the wind farm and then transported through two subsea export cables with a voltage of 225kV to Caroual beach in Erquy. The electricity is then transmitted into the grid via the Doberie substation located in Hénansal (Côtes-d’Armor).
Saint Brieuc offshore wind farm project in a nutshell
Saint Brieuc Offshore is a 496MW wind farm scheme being constructed at the English Channel from the coast of Saint Brieuc Bay, France. It is one of the largest commercial-scale offshore wind schemes in France.
The scheme is being developed by Ailes Marines, a partnership of RES Group, Iberdrola, and Caisse des Dépôts, a French public sector financial institution with an evaluated investment of $2.8bn. The wind farm is designed to produce sufficient power to meet the daily electricity needs of over 835,000 homes.
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A 62 Siemens Gamesa SG 8.0-167 DD offshore wind turbine will be fixed on jacket foundations in seven rows in the Saint Brieuc offshore wind farm. The rows will be 1.3km apart, while the turbines will be 1km from each other. A 225kV offshore substation will also be developed on a jacket foundation at the heart of the wind farm.
Each one of the three-bladed Siemens Gamesa SG 8.0-167 direct drive turbines to be used by the offshore wind farm will contain a hub height of 207m, 81.5m-long blades, a swept area of 21,900m², and a 167m-diameter rotor. Every turbine will be able to generate 8MW of electricity.
The turbines will be installed with the modern High Wind Ride Through (HWRT) system, which slows down the power output rather than shutting down when wind speed exceeds 25m/s. It allows a smoother production ramp-down and more authentic power generation. |
