The need to ensure compatibility with defense operations in the Fos Gulf region requires a revision of the platform’s operational planning
Marseille – The DEOS (Développement Éolien Offshore Sud) mega-project, which aims to transform the port of Marseille-Fos into a strategic hub for offshore wind power in the Mediterranean, is facing significant restrictions imposed by the French military authorities. The initiative, valued at approximately 550 million euros and intended to support future floating wind farms (such as the two 250 MW farms from the AO6 tender), is seeing its implementation slowed down by stringent national security, air navigation, and defense requirements.
The project involves the construction of a 120-hectare (75 on land, 45 at sea) logistics and industrial mega-platform by the end of 2028, with the goal of assembling about 25 floating wind turbines per year, some of which will exceed 300 meters in height. But the military constraints are complicating the process. The need to ensure compatibility with defense operations in the Fos Gulf region requires a revision of the platform’s operational planning and careful coordination, which in fact lengthens the authorization times and increases its complexity.
This friction between industrial ambitions for decarbonization and defense priorities risks limiting the areas available for the installation of infrastructure or for the movement of giant components, potentially reducing the estimated full production capacity of the hub. The port authorities’ goal is to find a balance that allows the Fos project to proceed, while ensuring compliance with the essential military security requirements and making Marseille-Fos a reference hub for floating wind power in Southern Europe.
