Méditerranée Grand Large [AO6]

A 230 to 280 MW floating wind farm 25 km off the Mediterranean coast.

Off Fos-sur-Mer, Méditerranée Grand Large is set to become one of the first commercial floating wind farms in the French Mediterranean. BW Ideol contributes to it both as a floating foundation technology partner and as a co-developer. Just a few kilometres from the site, its Fos3F serial production facility would be ideally placed to manufacture the project’s floaters locally.

Context and timeline of the tender 

In 2022, BW Ideol has signed an agreement with the consortium made of EDF power solutions (previously EDF Renewables), a subsidiary of the EDF group, and Maple Power, a joint venture between CPP Investments and Enbridge Inc., to cooperate on the design of floating foundations for the AO6 floating offshore wind tender.

This call for tender related to two sites with a capacity of approximatively 250 MW each. Combined, these two projects should produce the equivalent of the domestic electricity consumption of approximately one million inhabitants. 

The project company Eoliennes Méditerranée Grand Large, owned by the EDF Renewables and Maple Power consortium, has won the tender to design, construct, operate, and decommission a future floating offshore wind farm of between 230 and 280 MW, located 25 km off the French Mediterranean coast near Fos-sur-Mer, in the “Golfe de Fos 1” zone defined by the French State following the 2021 “EOS” public debate. The awarding of this project will enable the launch of an industrial value chain in the Mediterranean, following the realization of the first pilot farms.

A partnership with EDF power solutions and Maple Power

EDF power solutions develops, builds and operates renewable and low-carbon generation assets, together with flexibility and power transmission solutions. Maple Power is a joint venture between Enbridge Inc. and CPP Investments, created in 2019 to invest in and manage offshore wind projects in Europe. 

In November 2025, BW Ideol became a minority shareholder in the project company Eoliennes Méditerranée Grand Large through its subsidiary BW IPC (co-owned with Ademe Investissement).  

BW Ideol’s scope of work

BW Ideol contributes to Méditerranée Grand Large as both a technology partner and a co-developer. Since 2022, its teams have worked with EDF power solutions and Maple Power on the design of the floating foundation solution for the Mediterranean tender, in order to build the most suitable and competitive offer. In November 2025, BW Ideol Projects Company, the development vehicle co-owned with ADEME Investissement, took a 15% equity stake in the project company.

Project milestones

• 2022: BW Ideol signs a cooperation agreement with EDF power solutions and Maple Power on the design of floating foundations for the AO6 tender.
• 2024: Eoliennes Méditerranée Grand Large is awarded the “Golfe de Fos” site under the AO6 tender.
• November 2025: BW Ideol Projects Company becomes a minority shareholder in Eoliennes Méditerranée Grand Large.
• 2025 – 2029: development and regulatory review.
• 2029 – 2032: fabrication and construction.
• 2032: targeted commissioning, for an operating life of more than 30 years.

Building the foundations in the Mediterranean

BW Ideol is developing Fos3F, a serial production line for concrete floating foundations at Fos-sur-Mer, a few kilometres from the future wind farm. Local manufacturing of floating foundations is a strategic lever to reduce both the cost and the carbon footprint of the floaters, while maximising socio-economic benefits for the territories concerned.  

FOS3F: Floating Foundation Factory in Fos-Sur-Mer