Campus AI has appointed Eiffage as the general contractor for the development of a high-voltage electrical substation and shared infrastructure at its Fouju Campus, France, in a deal valued at over €120m ($139.6m).
This marks the beginning of the project’s operational phase, building on the preliminary commitments announced at the Choose France 2025 summit.
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The project will be delivered by a consortium led by Eiffage Énergie Systèmes, which is responsible for the design, engineering, supply, construction and commissioning of a 400kV/33kV electrical substation with a targeted final output of 1.4GW.
Other Eiffage subsidiaries are assigned to construct buildings, engineering structures, roads, utilities and landscaping for the campus. Eiffage Génie Civil and Eiffage Route will respectively oversee the civil engineering and external areas.
Campus AI’s selection of Eiffage reflects a decision to situate the development within the context of the French industrial sector.
The company has indicated that synergies between various Eiffage divisions will allow for integration of the design and build process, which could accelerate the overall timeline.
Eiffage will use teams from the Île-de-France region and intends to prioritise regional subcontractors and small to medium-sized enterprises for this work.
The planned metal-clad substation is to be insulated with gas possessing a low climate change potential.
According to Campus AI, this is the first use of this approach for equipment at this voltage level in France, and it is a voluntary initiative, with environmental considerations cited as a benefit.
Eiffage Énergie Systèmes chairman Ludovic Duplan said: “We are proud to support Campus AI in realising a capacity-building project for national, and by extension European, digital sovereignty.
“With this contract, Eiffage is reaffirming its commitment to stakeholders in the data centre and AI factories sector.”
Campus AI, formed as a joint venture between MGX, Mistral AI, Bpifrance and Nvidia, develops large-scale AI infrastructure in France.
The Fouju Campus will feature up to 12 data centre buildings with supercomputers, two substations, and related technical and support facilities.
The project aims to support the development of AI and digital innovation, with initial phases expected to be operational from 2028.
The site’s total area is approximately 70ha, with phased expansion planned to match industry demand.
Campus AI general manager Thibaud Desfossés said: “With the appointment of Eiffage, Campus AI is moving from the design phase to the implementation one.
“We are building in France a piece of infrastructure that will make it possible to deploy macro-scale artificial intelligence in Europe.”
RTE, the French transmission system operator, will connect the campus via a new 400kV substation, with connection capacity phased from 700MW initially to a total of 1,400MW.
