Expanding
Colocation
Liquid cooling
Tier III

Eclairion Bruyères-le-Châtel

Eclairion · Bruyères-le-Châtel

IT live
40 MW
Free to lease
4.4 MW
$ / kW·mo
$97
White space
188k ft²

Inventory

89% occupied

Power

40 MWlive

4.4 MW to lease · 35.6 MW in use

White space

188k ft²total

11k ft² free · 177k ft² occupied

17k m² · 1,022 m² free

Free power is unsold critical IT at this building, not utility headroom. Space is computer-room white space.

Power

IT live40 MW
Free to lease4.4 MW
Utility feed75 MW
Campus / planned60 MW

About 35 MW of the utility feed is cooling, conversion, and house load.

Power cost

$97/kW·mo

10.4¢ industrial · 13.3¢ after PUE 1.28

Per MW·year
$1.2M
This site · 40 MW
$47M/yr
40 kW rack
$3,887/mo
3.2¢ cheapdear 22.4¢

3.3× the cheapest market (Iceland Landsvirkjun). Same IT load there is $32M/yr less.

France Enedis / Ile-de-France · utility tariff × PUE, not colo list price.

Redundancy
N+1
Opened
2025
Renewable match
95%
Rack density
40 kW
PUE
1.281.00 ideal · 1.60 typical
Power source
RTE / Enedis. Dual MV inlets plus on-site diesel. Nuclear-heavy French grid (ARENH).

Cooling

Plant

Direct-to-chip

Liquid

Deployed

Rack density

40 kW

H100-eq

—

WUE

—

Operator has not published WUE. Blank, not zero — air-cooled sites still use some water.

Direct-to-chip cold plates and rear-door HX. Designed for 40 kW-plus AI racks.

Network carriers

6

On-net and metro carriers typically present at this location, including internet exchanges. Not a full circuit inventory.

Clouds

4

Native regions and typical Direct Connect / ExpressRoute / Interconnect on-ramps at this campus. Availability varies by hall.

Location

Bruyères-le-Châtel, Île-de-France, France

Parc du château, Bruyères-le-Châtel, Essonne

48.591°, 2.191° · Europe

Tenants / users

Mistral AI, French sovereign AI, HPC colo

Notes

First European supercomputer-colo campus. Four 2,500 sqm platforms; Mistral occupies two. 40 MW Enedis now, 60 MW RTE by 2027. Container GPU halls, not a carrier hotel.

Operator site

Compiled from public filings, operator pages, and reporting. Not an official operator specification.