All records
Data center siteSite record
OpCore Montereau Data Center
Vernou-la-Celle-sur-Seine / La Grande-Paroisse, FrancePreconstruction
Capacity
400 MW
Contracted
Lead participant
OpCore
Developer
Last updated
Aug 27, 2026
Most recent public record update
About OpCore Montereau Data Center
OpCore is redeveloping the former EDF thermal-power site at Montereau-Fault-Yonne, France as a large data center campus. The program carries an investment of approximately €4 billion and a power subscription exceeding 400 MW, with an initial phase targeted for 2027. The 400 MW figure is contracted grid supply rather than operating IT load.
Capacity
ContractedOperating capacity—An operating IT-capacity figure has not been publicly disclosed.
Design400 MWProposal · OpCore Montereau Data Center
Contracted Supply400 MWActual · OpCore Montereau Data Center
Contracted SupplyMore than 400 MW contracted grid supplyActual · OpCore Montereau Data Center
Development
1 phases · 2 milestonesDevelopment programAnnounced Or Preconstruction
OpCore Montereau Data Center: Development program.
Nov 17, 2025
OpCore Montereau Data Center — Development program
In Progress—
OpCore is redeveloping the former EDF thermal-power site at Montereau-Fault-Yonne, France as a large data center campus.
In ProgressInfrastructure
Utility ServicePlanned Or Represented
400 MW
More than 400 MW contracted grid supply
Site FacilityPlanned Or Represented
The 400 MW figure is contracted grid supply rather than operating IT load.
Project map
0 of 1 project point mappedInfrastructure facts
2
Mapped records
1
Capacity figures
1
No map point available
Power & interconnection: 1Site systems: 1
Facts & sources
Published claims and their source links.
Location ContextFormer Montereau thermal power plant site | Seine et-Marne | FranceActual
Former Montereau thermal power plant site | Seine et-Marne | France
Lifecycle StatusPreconstructionActual
Preconstruction
Reported Capacity400 MWProposal
400 MW
Capacity BasisPower subscription stated as more than 400 MW; stored floor valueActual
Power subscription stated as more than 400 MW; stored floor value
Project IdentityOpCore Montereau Data CenterActual
OpCore Montereau Data Center
Lifecycle StatusDevelopment programActual
Development program
LocationVernou la-Celle sur-Seine / La Grande-Paroisse, Seine et-Marne, FRActual
Vernou la-Celle sur-Seine / La Grande-Paroisse, Seine et-Marne, FR
Participant RolesOpCore, EDFActual
OpCore, EDF
Capacity400 MWActual
400 MW
Capacity BasisMore than 400 MW contracted grid supplyActual
More than 400 MW contracted grid supply
Development ScaleOpCore is redeveloping the former EDF thermal power site at Montereau-Fault-Yonne, France as a large data center campus. The program carries an investment of approximately €4 billion and a power subscription exceeding 400 MW, with an initial phase targeted for 2027Actual
OpCore is redeveloping the former EDF thermal power site at Montereau-Fault-Yonne, France as a large data center campus. The program carries an investment of approximately €4 billion and a power subscription exceeding 400 MW, with an initial phase targeted for 2027
InfrastructureThe 400 MW figure is contracted grid supply rather than operating IT load.Actual
The 400 MW figure is contracted grid supply rather than operating IT load.