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Eiffage wins €1.5 billion contract for French offshore substations

Tuesday, September 30 2025

Wind Energy – Three Substations

Eiffage has been awarded the contract for three substations for the Bretagne Sud, Narbonnaise Sud-Hérault and Golfe de Fos French offshore wind farms, worth more than €1.5 billion.

The EPCIC contract has been awarded by RTE, France’s transmission system operator

The contract covers the construction of jacket foundations and topside structures, which house the electrical equipment.

The jackets will be 115 meters high, 25 meters wide, and 35 meters long for the Bretagne Sud project, and approximately 110 meters high, 45 meters wide, and 50 meters long for the Narbonnaise Sud-Hérault and Fos projects.

The topsides structures will weigh approximately 5,000 tonnes and measure over 20 meters high, 35 meters wide, and 70 meters long.

Each substation will have a 750 MW capacity. Overall, these three substations will handle the connection to the power transmission grid of more than 2 GW of decarbonised electricity, making a significant contribution towards the achievement of Europe’s net-zero carbon and energy transition goals.

The various components of these substations will be entirely manufactured in the factories of Smulders and its industrial partners in France and Europe. The jackets will be assembled at Eiffage Métal’s site in Fos-sur-Mer (France) and the topsides will be assembled at the site in Vlissingen (Netherlands).

Related posts:

  1. HSM Offshore awarded East Anglia TWO substation contract
  2. Asian yard wins EPCIC contract for field development offshore Vietnam
  3. HSM rolls out Thor OHVS topside
  4. Chantiers gets maintenance deal for French offshore wind substations

Filed Under: Eiffage Metal, Engineering, EPCIC, France, International projects, Jacket foundations, Substation, Topside Tagged With: construction, Eiffage, engineering, EPCIC, France, jacket foundations, substations, topside structures

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