The Golfe de Fos 2 (AO9) project is a TSO‑led offshore HVAC grid connection being developed by RTE to evacuate power from the AO9 Golfe de Fos floating wind farm into the French transmission system. The connection is specified as a 225 kV alternating‑current export system designed to deliver appr...
On 29 September 2025, RTE awarded Eiffage, through its Belgian subsidiary Smulders, an EPCIC contract worth more than €1.5 billion to design, construct, install, and commission three 750 MW AC offshore substations for the Bretagne Sud (AO5), Narbonnaise Sud‑Hérault, and Golfe de Fos (AO6) offshore wind farms and their future AO9 extensions, with jackets to be assembled at Eiffage Métal’s Fos‑sur‑Mer site in France and topsides at Vlissingen in the Netherlands.
On 5 August 2025, the European Commission approved an €11 billion French state aid scheme to support three floating offshore wind projects via 20-year two-way contracts for difference awarded through competitive bidding. The scheme is explicitly aligned with the AO9 tender zones, including the Golfe de Fos 2 and Narbonnaise 2 areas in the Mediterranean and Bretagne Sud 2, providing the regulatory state-aid framework underpinning these projects’ future development and operation.
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Golfe de Fos 2 AO9, AO9 Golfe de Fos 2, Projet éolien flottant Golfe de Fos 2, Golf de Fos 2
In 2024, the French government announced that it had pre-qualified twelve candidates for the AO9 offshore wind tender, including EDF power solutions with its partner Maple Power. These pre-qualified bidders will compete for the Bretagne Sud 2 project, the Golfe de Fos 2 and Narbonnaise 2 floating wind projects (each 450–550 MW), and the Oleron 2 project, confirming formal regulatory admission of participants for the Golfe de Fos 2 zone.
On 17 December 2024, Prysmian signed a framework agreement with French TSO RTE for the engineering, procurement, construction, installation, and commissioning of the submarine and land high‑voltage AC export cable links connecting the Fos offshore wind project to the French transmission grid, comprising three 225 kV three‑core export cables with XLPE insulation and around 300 km of land and submarine cables for the Fos connection, rated at 750 MW.
In July 2024, the French government launched the AO9 offshore wind tender, which covers four projects including the Golfe de Fos 2 floating wind zone in the Mediterranean, defined as an extension of the existing AO6 offshore wind farm. The tender seeks to award projects such as Bretagne Sud 2 (400–550 MW), Golfe de Fos 2 and Narbonnaise 2 (450–550 MW each), and Oleron 2, marking a key regulatory step for developing the Golfe de Fos 2 grid connection under the TSO-build model.
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