Data centres / France

Campus IA, Fouju

PermittedFrance5 of 13 fields known

Fouju, Seine-et-Marne, France.

Operator

Not stated

Owner

Not stated

Stage

Permitted (source, 29 July 2026)

Power

The public debate summary describes 1,400 MW total power need, with a 700 MW provisional connection for phase 1 by 2028, via two 400 kV RTE lines.

Cooling

Rooftop refrigeration units are planned instead of groundwater use, with waste heat for a training centre, greenhouses and a nearby prison.

The 1.4 GW figure is a power need described by press and the national public debate summary, not a stated IT capacity. Opponents have announced a legal challenge; we did not confirm one has been filed. The project owner or operator is not named in the primary documents we read.

What we checked

• The Seine-et-Marne prefecture authorised the project on 29 July 2026 for about 89 hectares, eleven data centre buildings and one training building. (source)
• The local authority calendar says phase 1 construction begins in September 2026 with first delivery of three data centres and the substation estimated in early 2028. (source)
• The same calendar says Mistral AI secured up to 200 MW of computing capacity as founding client, a figure whose metric is not defined. (source)
• The public debate commission's summary gives phase 1 as three data centres plus a training facility and phase 2 as nine more, on about 70 hectares. (source)

What we do not know yet

5 of 13 fields in a complete record are filled. Still missing:

• Owner
• Operator
• Grid connection
• PUE
• Water use
• Chips
• Connectivity
• Certifications

Checked on 2 October 2026. Reported and planned figures are shown as such. Not yet reviewed line by line by a second person. If something is wrong or you know more, tell us.

Other sites in France

• Eclairion Bruyères-le-Châtel
• Digital Realty Paris South (Mistral AI cluster)
• Data4 Paris-Saclay campus (PAR01, PAR02, PAR03)
• Fluidstack France 1 GW AI supercomputer