# Montereau, Paris region: a closed coal plant offered with a fast-track grid connection

> EDF closed its Montereau coal plant in 2004. In 2025 it offered the site to data center developers with a **fast-track grid connection**, and in November 2025 entered exclusive negotiations with OpCore (iliad and InfraVia) for a data center campus of **several hundred MW**, an investment of about **€4 billion**, with first commissioning targeted for 2027.

Third-party precedent · France · Exclusive negotiations · Pathway: Brownfield redevelopment, then build and operate · Last checked 2026-10-13 · https://ampervia.com/case-studies/montereau-paris-power-plant/

## Timeline

| When | What happened |
|---|---|
| 2004 | Coal-fired plant shut down. |
| Mar 2025 | EDF launches calls for expressions of interest for data centers on its former plant sites. |
| 17 Nov 2025 | Exclusive negotiations with OpCore; ~€4bn, several hundred MW. |
| 2027 | First commissioning targeted. |

## What changed between entry and exit

- The landowner prepared the site and the grid route itself, then ran a competitive process.
- The developer brings capital and operations.

## Capital and counterparties

EDF provides land and grid preparation (typically via construction lease); OpCore (iliad and InfraVia funds) invests about €4bn.

## Economics

| Item | Figure | Note |
|---|---|---|
| Land terms | Not disclosed | EDF offers land under construction leases |
| Developer investment | ≈€4 billion | Build cost, not land value |

## Risks and limitations

- Negotiations, not a completed deal.
- Scale is far above club-sized projects.

## Relevance to Ampervia

Power-plant sites are the grid-rich end of the brownfield market. The playbook (prepare power, then auction to developers) is the same at any size.

## Sources

- [EDF — EDF and OpCore to develop a high-power data center at Montereau (17 Nov 2025)](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)
- [Reuters — EDF, OpCore to develop €4bn data centre in France](https://www.reuters.com/business/energy/edf-opcore-develop-4-billion-euros-data-centre-france-2025-11-17/)
- [EDF — calls for expressions of interest for data centers on EDF land (Mar 2025)](https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/edf-launches-calls-for-e)