Build.
Circular DatacenterDesign,Build,Reuse.
Construction and building works for high-density data centers. Megawatts available now, on sites already connected to the grid.
Retrofit.Construction.Redeployment.
Contact our teams
Let’s build what’s next together.
- 240 MW
- under delivery
- 40
- people
- 4000+
- items of equipment reused
- 80 %
- reuse rate
- 6
- locations across France
Design.
Reuse.
The anatomy of a data centerA data center,
A data center,
package by package.
What we do, package by package
A data center is around ten technical packages that have to hold together. Here is what they are, what they do, and where we come in.
Where energy enters the site, at the interface with the public grid. It caps the available capacity: on a retrofit, what it can carry decides what the building can host.
Design.Build.See the expertiseMedium-voltage switchgear distributes and protects; transformers step the voltage down to usable low voltage. These are very long-life assets, where reuse saves several quarters of lead time.
Design.Build.Reuse.See the expertiseThe main low-voltage switchboard distributes power to the halls and the utilities. This is where discrimination is decided: a fault must be cleared as close as possible without tripping anything upstream.
Design.Build.Reuse.See the expertiseThe uninterruptible supply holds the load until the backup starts. We requalify UPS units but always replace batteries with new: their ageing cannot be recovered.
Design.Build.Reuse.See the expertiseThe last line of backup, with its fuel tanks and bunding. A generator only counts once its load acceptance has been tested for real, several times - untested redundancy is a hypothesis.
Design.Build.Reuse.See the expertiseChillers and free cooling, producing the chilled water. In the French climate a large share of the year can be covered without compression - provided the loop accepts warm enough water.
Design.Build.Reuse.See the expertiseThe networks carrying cooling to the halls, and the units that deliver it. This is the package most deeply transformed by the arrival of direct liquid cooling.
Design.Build.See the expertiseThe usable space: rack layout, aisle containment, cable routes and raised floors. At AI densities, room geometry matters as much as installed cooling capacity.
Design.Build.See the expertisePhysical security zones, access control, video surveillance and very early smoke detection. These are drawing-board decisions: added later, they force partition rework.
Design.Build.See the expertiseThe building management system, which makes everything else visible and controllable. Without measurement points designed in from the start, neither energy reporting nor certification is possible.
Design.Build.See the expertise
The value chainFrom the land
From the land
to redeployment.
Four stages, four different people to talk to. Find yours.
An industrial brownfield, a warehouse, a dormant grid connection: we assess what your site can genuinely host. Clear height, floor loading, obtainable capacity, heavy-goods access. The grid connection decides almost everything - and we tell you before you commit spend, including when the answer is no.
Have a site qualified
Load balances, thermal sizing, layout drawings, physical security studies. Our Vélizy-Villacoublay teams sit in the same company as the people who build: discrepancies found on site come back to the authors of the drawings. Study-only engagements, with no construction attached, are a normal part of what we do.
See the design office
From the high-voltage intake to the rack feed, and from the cooling plant to aisle containment. Most of our work happens on sites in service: planned isolations, rehearsed transfers, negotiated windows, a fallback plan for every sensitive operation. It is a discipline of preparation before it is a feat of execution.
See our works
Transformers, medium-voltage switchgear, main LV switchboards, UPS units, chillers and generators, requalified to a documented protocol. What decides is not carbon but lead time: where new high-capacity equipment is ordered several quarters out, available refurbished kit moves your project's critical path.
See equipment reuse
We build Datacenters that match high standards.
The Béthune programme
240 MW under delivery.
We are a contractor on the programme developed by Azur Datacenter for Nebius: the conversion of the former Bridgestone plant into a data center dedicated to artificial intelligence. 120 MW by end 2026, 240 MW in 2027, 26,000 m² of rehabilitated building.
Developer
End customer
Experienced site
developers with MWs.
Construction, technical packages and reuse for high-density data centers, on new and live sites. The megawatts we deliver start from what already exists: a grid connection in place, a building that stands, refurbished equipment in stock.
4000+
reused equipments
deployed
3 months
to build a
Datacenter
Vertical Integration
We do all the datacenter.
Our offices at Velizy-Villacoublay make the studies.
Design.
Power - Cooling - Security - Layout
Build.
Civil works - MEP installation - Deployment
Reuse.
Dismantling - Refurbishment - Redeployment
Contact our teams