The Dunkerque offshore wind grid connection is the high‑voltage link that will transmit up to 600 MW of power from the AO3 Dunkerque offshore wind farm to the French transmission system. Developed and owned by the transmission system operator Réseau de Transport d’Électricité (RTE), the scheme us...
RTE awarded a turnkey contract to a consortium of Hellenic Cables and Asso.subsea for the Dunkerque offshore wind farm grid connection, selecting Hellenic Cables to design, manufacture and supply 32 km of 225 kV submarine export cables and 38 km of underground cables, including accessories, and to perform jointing, testing, termination and commissioning. Asso.subsea will provide transportation, laying and protection of the submarine cable links, enabling two 225 kV HVAC export cable circuits to connect the offshore substation to the French onshore grid.
French TSO RTE signed an engineering, procurement, construction and installation (EPCI) contract worth around EUR 320 million with Chantiers de l’Atlantique for the offshore substation and its foundations forming part of the 600 MW Dunkirk offshore wind farm grid connection. The substation platform will be assembled in Saint-Nazaire and its foundation manufactured in Fos-sur-Mer, with RTE responsible for the project’s high-voltage offshore grid infrastructure.
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Dunkerque offshore wind farm grid connection, Dunkirk offshore wind export link, AO3 Dunkerque export grid connection, Raccordement électrique du parc éolien en mer de Dunkerque
In May 2021, EMD and RTE indicated that a period of continuous consultation would be organised ahead of a formal public inquiry on the Dunkirk offshore wind farm and its grid connection, with this public inquiry expected to take place in the second half of 2022 as part of the permitting process.
In November 2022, RTE issued a contract notice seeking suppliers for the construction, delivery, and subsequent operations and maintenance of the offshore substation that will transmit power from the Dunkirk offshore wind farm to the French grid, initiating the formal procurement process for this key grid connection asset. The notice covers the full offshore substation package for the Dunkerque Export connection.
EMD, as developer of the Dunkirk offshore wind farm, and RTE, responsible for the project’s grid connection, stated in May 2021 that they planned to submit the necessary permit applications for the wind farm and its grid connection in the second half of 2021, initiating the formal development consent process for both the offshore project and its transmission infrastructure.
On 10 May 2021, Eoliennes en Mer de Dunkerque (EMD), developer of the Dunkirk offshore wind farm, and French TSO RTE, responsible for the project’s grid connection, announced their joint decision to move ahead with the development phase of the Dunkirk wind farm and its offshore grid connection following a series of public debates held between September and December 2020. This marks the formal progression of both the wind farm and the Dunkerque Export transmission assets, for which RTE is lead developer, into detailed development activities including permitting and further technical and environmental work.
Between 14 September and 20 December 2020, the CPDP, a commission appointed by the French national public debate agency, led a series of public debates on the Dunkirk offshore wind farm and its grid connection being developed by EMD and RTE, providing a formal consultation platform for local stakeholders on the project and its offshore/onshore transmission link.
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