CEA / Bruyères-le-Châtel / Île-de-France / FR

Très Grand Centre de Calcul (TGCC)

PrivateOperationalDocumented building outlineVerified 2026-09-11

Explore Paris →View on map ↗

On the record inside

Nothing

No power or GPU figure is published

Available to buy

None

This is captive capacity. The operator does not sell GPU-hours, so no price on GPUQuant refers to it.

Cloud region relations

None

No provider names an area that GPUQuant has recorded as containing this building.

What is published

25 m

about 3,700 m2 (40,000 sq ft) across 1 outlineBuilding outlines © OpenStreetMap contributors, ODbL · Licence

Operator: CEA
Status: Operational
Published power: Not published
Published GPU count: Not published
First announced: Not published
Location precision: Documented building outline

A power or accelerator figure appears above only where an operator or a filing states it.

AI compute

Commissariat a l'Energie Atomique TopazeFrench Alternative Energies and Atomic Energy Commission (CEA)
192 chips · NVIDIA A100 · 61 H100e · 0 MW, estimated · since 2021-06
Used by Researchers, Industry

Epoch AI, CC BY 4.0

Who uses it

Operated by: CEA

This is captive capacity. The operator does not sell GPU-hours, so no price on GPUQuant refers to it.

Where it sits

Address: Not published
Place: Paris
Coordinates: 48.59660, 2.19927
Geometry source: openstreetmap

Cloud regions

None recorded.

The grid in France

Published figures for 2025, from the source named under them.

Carbon intensity

41 g

CO2 per kWh, very clean against the world average

Generated

570 TWh

in 2025, against 476 TWh consumed

Installed capacity

168 GW

all fuels

Renewables

26%

of generation

What it runs on

95% clean5.1% fossil

Nuclear69%
Hydro10%
Wind8.2%
Solar5.6%

Ember, CC BY 4.0

The record

Every change is appended, so an earlier value stays readable beside the one that replaced it.

2026-09-11Sources last verified

Record: cea-tgcc-bruyeres-le-chatel
Last verified: 2026-09-11
Sources on record: 3
Recorded revisions: 0

Every source on this record (3)

Atos

"Topaze": a new computer at the CCRT co-designed by Atos and the CEA to meet the challenges of high-performance computing and data processing · read 2026-09-11
at Bruyères-le-Châtel in Essonne (south of Paris)
"Topaze": a new computer at the CCRT co-designed by Atos and the CEA to meet the challenges of high-performance computing and data processing · read 2026-09-11
is an infrastructure operated by teams from the DAM Île-de-France center and designed to host supercomputers
"Topaze": a new computer at the CCRT co-designed by Atos and the CEA to meet the challenges of high-performance computing and data processing · read 2026-09-11
It will be open to the first users at the end of June 2021