Marine Energy & Engineering

Atlantique Offshore Energy (AOE), Chantiers de l’Atlantique business unit dedicated to offshore structures

Dedicated to the market of Renewable Marine Energies and of Oil & Gas, Atlantique Offshore Energy (AOE) is the specialist of tailor-made solutions for engineering, manufacturing or EPCIM (Engineering, Procurement, Construction, Installation and Maintenance) turnkey projects solutions. Empowered by its design offices and its proven expertise on its export markets, this business unit is an unavoidable player of the energy transition in France and around the world.

A selection
of references

Atlantique Offshore Energy has many references demonstrating its ability to successfully deliver turnkey projects fulfilling its clients’ needs, whether it is related to Marine Renewable Energy, most notably electrical offshore substations for offshore wind farms, or to the Oil & Gas industry.


Following its first achievements, Atlantique Offshore Energy was selected to design, manufacture and commission the electrical offshore substations of the French offshore wind farms and continues its success story in Europe with its exports.

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Electrical substation for the Parc
du Banc de Guérande

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Substation for the Fécamp offshore wind farm

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Substation for Gode Wind 3 offshore wind farm

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Substation for the Wind Farm off the Coast of Calvados

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A continuous
innovation process

Leader in the execution of turnkey projects, Atlanique Offshore Energy is also engaged in a continuous innovation process.

As a result of this approach, the SeeOs modular and scalable electrical offshore substation concept has been certified by the classification society DNV-GL.

This substation is scalable in accordance with our customers’ needs and adaptable in terms of technical features (power output, number and type of electrical equipment, etc.) or location (floating or resting foundation for instance).

Our innovation process Our Fields of Expertise
Focus on

SeeOs, scalable solution of offshore electrical substations

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Dedicated Skills and Tools

Atlantique Offshore Energy benefits from decisive assets in order to meet its clients’ expectations:

  • Teams of experts in every necessary domain, from the design to the maintenance of offshore installations
  • An extensive experience in project management with attention to safety, quality and delivery time
  • A proven expertise in terms of technology integration
  • Significant industrial and logistical capacities with a direct access point to the open sea and a production capacity of two to three substations per year:
  • A 307 x 23 m (1,007 x 75 ft) pre-manufacturing workshop with one 50tgantry crane and special tools
    • A 120 x 35 x 15 m (393 x 115 x 50 ft) assembly workshop with two 60 ft gantry cranes.
    • A 6,000 m² (7,175 yd²) pre-assembling area.
    • A 50 x 35 x 22 m (165 x 115 x 72 ft) painting workshops

A question? A project?

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