Cartis diligence evidence schedule
OpCore Montereau Data Center
PRJ-0608 · Site · Vernou-la-Celle-sur-Seine / La Grande-Paroisse, France
Record last updated Oct 28, 2026
Scope and capacity
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.
Headline: 400 MW Contracted
Numbers refer to their stated physical boundaries and are not added together. Source dates, claim dates and record updates have different meanings. Missing dates and locators are not inferred.
Claims and exhibit sources
Jump to a claim (12)
Location context · Former Montereau thermal power plant site | Seine et-Marne | France
Actual · OpCore Montereau Data Center (Project)
Claim 54741 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated
- EDF and OpCore to develop a high-power data center at Montereau
EDF · Document date: Nov 17, 2025 · Primary
Source reference: SRC-2952 · Company announcement · Recorded authority: Party primary
Source URL
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
Lifecycle status · Preconstruction
Actual · OpCore Montereau Data Center (Project)
Claim 54742 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated
- EDF and OpCore to develop a high-power data center at Montereau
EDF · Document date: Nov 17, 2025 · Primary
Source reference: SRC-2952 · Company announcement · Recorded authority: Party primary
Source URL
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
Reported capacity · 400 MW
Planned / design or future potential · OpCore Montereau Data Center (Project)
Claim 54743 · Recorded claim type: Proposal · Review: Approved · Claim date: Not stated
Headline treatment: Separate claim, not added to the headline
- EDF and OpCore to develop a high-power data center at Montereau
EDF · Document date: Nov 17, 2025 · Primary
Source reference: SRC-2952 · Company announcement · Recorded authority: Party primary
Source URL
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
Capacity basis · Power subscription stated as more than 400 MW; stored floor value
Actual · OpCore Montereau Data Center (Project)
Claim 54744 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated
- EDF and OpCore to develop a high-power data center at Montereau
EDF · Document date: Nov 17, 2025 · Primary
Source reference: SRC-2952 · Company announcement · Recorded authority: Party primary
Source URL
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
Project identity · OpCore Montereau Data Center
Actual · OpCore Montereau Data Center (Project)
Claim 119627 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated
- EDF and OpCore to develop a high-power data center at Montereau
EDF · Document date: Nov 17, 2025 · Primary
Source reference: SRC-2952 · Company announcement · Recorded authority: Party primary
Source URL
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
- EDF 2025 half-year results
EDF · Document date: Jul 24, 2025 · Corroborating
Source reference: SRC-6543 · Regulatory record · Recorded authority: Official primary
Source URL
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
Lifecycle status · Development program
Actual · OpCore Montereau Data Center (Project)
Claim 119628 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated
- EDF and OpCore to develop a high-power data center at Montereau
EDF · Document date: Nov 17, 2025 · Primary
Source reference: SRC-2952 · Company announcement · Recorded authority: Party primary
Source URL
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
- EDF 2025 half-year results
EDF · Document date: Jul 24, 2025 · Corroborating
Source reference: SRC-6543 · Regulatory record · Recorded authority: Official primary
Source URL
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
Location · Vernou la-Celle sur-Seine / La Grande-Paroisse, Seine et-Marne, FR
Actual · OpCore Montereau Data Center (Project)
Claim 119629 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated
- EDF and OpCore to develop a high-power data center at Montereau
EDF · Document date: Nov 17, 2025 · Primary
Source reference: SRC-2952 · Company announcement · Recorded authority: Party primary
Source URL
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
- EDF 2025 half-year results
EDF · Document date: Jul 24, 2025 · Corroborating
Source reference: SRC-6543 · Regulatory record · Recorded authority: Official primary
Source URL
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
Participant roles · OpCore, EDF
Actual · OpCore Montereau Data Center (Project)
Claim 119630 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated
- EDF and OpCore to develop a high-power data center at Montereau
EDF · Document date: Nov 17, 2025 · Primary
Source reference: SRC-2952 · Company announcement · Recorded authority: Party primary
Source URL
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
- EDF 2025 half-year results
EDF · Document date: Jul 24, 2025 · Corroborating
Source reference: SRC-6543 · Regulatory record · Recorded authority: Official primary
Source URL
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
Capacity · 400 MW
Actual · OpCore Montereau Data Center (Project)
Claim 119631 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated
Headline treatment: Selected headline
- EDF and OpCore to develop a high-power data center at Montereau
EDF · Document date: Nov 17, 2025 · Primary
Source reference: SRC-2952 · Company announcement · Recorded authority: Party primary
Source URL
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
- EDF 2025 half-year results
EDF · Document date: Jul 24, 2025 · Corroborating
Source reference: SRC-6543 · Regulatory record · Recorded authority: Official primary
Source URL
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
Capacity basis · More than 400 MW contracted grid supply
Actual · OpCore Montereau Data Center (Project)
Claim 119632 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated
Headline treatment: Separate claim, not added to the headline
- EDF and OpCore to develop a high-power data center at Montereau
EDF · Document date: Nov 17, 2025 · Primary
Source reference: SRC-2952 · Company announcement · Recorded authority: Party primary
Source URL
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
- EDF 2025 half-year results
EDF · Document date: Jul 24, 2025 · Corroborating
Source reference: SRC-6543 · Regulatory record · Recorded authority: Official primary
Source URL
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
Development scale · 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
Actual · OpCore Montereau Data Center (Project)
Claim 119633 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated
- EDF and OpCore to develop a high-power data center at Montereau
EDF · Document date: Nov 17, 2025 · Primary
Source reference: SRC-2952 · Company announcement · Recorded authority: Party primary
Source URL
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
- EDF 2025 half-year results
EDF · Document date: Jul 24, 2025 · Corroborating
Source reference: SRC-6543 · Regulatory record · Recorded authority: Official primary
Source URL
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
Infrastructure · The 400 MW figure is contracted grid supply rather than operating IT load.
Actual · OpCore Montereau Data Center (Project)
Claim 119634 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated
- EDF and OpCore to develop a high-power data center at Montereau
EDF · Document date: Nov 17, 2025 · Primary
Source reference: SRC-2952 · Company announcement · Recorded authority: Party primary
Source URL
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-and-opcore-to-develop-a-high-power-data-center-on-site-of-former-thermal-power-plant-in-montereau-vallee-de-la-seine-wider-paris-metropolitan-region
- EDF 2025 half-year results
EDF · Document date: Jul 24, 2025 · Corroborating
Source reference: SRC-6543 · Regulatory record · Recorded authority: Official primary
Source URL
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
https://www.edf.fr/sites/groupe/files/2025-07/2025-07-24-pr-edf-half-year-results.pdf
Counterparties and capital
€4,000,000,000 · Jul 24, 2025
Planned Montereau redevelopment investment.
OpCore (Sponsor)
Sources (2)
- EDF and OpCore to develop a high-power data center at Montereau · Nov 17, 2025
- EDF 2025 half-year results · Jul 24, 2025
Financing record 244; claim-specific source links appear in the exhibit sources where published.
This schedule captures public Cartis research. It is not a title, lien or legal-opinion report. Document page/section locators and claim review timestamps are included only when published; this version has no separate locator or claim-review-time feed.