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CyrusOne PAR1 Paris Data Center Campus

PRJ-0883 · Site · Wissous, Île-de-France, France

Record last updated Oct 28, 2026

Scope and capacity

On April 2, 2026, the Versailles administrative appeal court rejected the challenge to CyrusOne’s November 2021 environmental registration at Wissous. This regulatory decision does not establish commissioning of PAR1’s expansion or approval of every future phase. CyrusOne PAR1 Paris Data Center Campus, also known as CyrusOne PAR1, is a partially operational data center campus in Wissous, IDF, FR associated with CyrusOne. Six planned data halls across three phases; 27 MW total design; 4.5 MW identified as operating on the current profile. Phased Paris-region campus with dual redundant power, closed-loop cooling and renewable-energy sourcing. 4.5 MW is the current operating-phase design. The separate 27 MW figure is the six-hall, three-phase full-build plan.

Headline: 27 MW Planned critical IT

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 (17)

Location context · CyrusOne PAR1 | Wissous | Île de-France | FR

Actual · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 63429 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. CyrusOne CyrusOne PAR1 profile

    CyrusOne · Document date: Aug 28, 2026 · Primary

    Source reference: SRC-3550 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/paris-france

Lifecycle status · Partially operational

Actual · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 63430 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. CyrusOne CyrusOne PAR1 profile

    CyrusOne · Document date: Aug 28, 2026 · Primary

    Source reference: SRC-3550 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/paris-france

Reported capacity · 27 MW

Design · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 63431 · Recorded claim type: Design · Review: Approved · Claim date: Not stated

Headline treatment: Separate claim, not added to the headline

  1. CyrusOne CyrusOne PAR1 profile

    CyrusOne · Document date: Aug 28, 2026 · Primary

    Source reference: SRC-3550 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/paris-france

Capacity basis · CyrusOne publishes 27 MW of critical IT capacity for this record boundary.

Actual · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 63432 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. CyrusOne CyrusOne PAR1 profile

    CyrusOne · Document date: Aug 28, 2026 · Primary

    Source reference: SRC-3550 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/paris-france

Location context · CyrusOne PAR1 | Wissous | Île de-France | FR

Actual · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 93180 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. CyrusOne CyrusOne PAR1 profile

    CyrusOne · Document date: Aug 28, 2026 · Primary

    Source reference: SRC-3550 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/paris-france

Lifecycle status · Partially operational

Actual · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 93181 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. CyrusOne CyrusOne PAR1 profile

    CyrusOne · Document date: Aug 28, 2026 · Primary

    Source reference: SRC-3550 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/paris-france

Reported capacity · 4.5 MW

Actual · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 93182 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

Headline treatment: Separate claim, not added to the headline

  1. CyrusOne CyrusOne PAR1 profile

    CyrusOne · Document date: Aug 28, 2026 · Primary

    Source reference: SRC-3550 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/paris-france

Capacity basis · 4.5 MW is the current operating Phase 1 IT boundary. The remaining 22.5 MW belongs to non operational or authorization stage phases within the 27 MW full design.

Actual · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 93183 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. CyrusOne CyrusOne PAR1 profile

    CyrusOne · Document date: Aug 28, 2026 · Primary

    Source reference: SRC-3550 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/paris-france

Technical area · 10,396 square metres

Design · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 93188 · Recorded claim type: Design · Review: Approved · Claim date: Not stated

  1. CyrusOne current global location index

    CyrusOne · Document date: Aug 29, 2026 · Primary

    Source reference: SRC-5125 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/data-centers

Location context · CyrusOne PAR1 | Wissous | IDF | FR

Actual · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 104370 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. CyrusOne CyrusOne PAR1 profile

    CyrusOne · Document date: Aug 28, 2026 · Primary

    Source reference: SRC-3550 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/paris-france

Lifecycle status · Partially operational

Actual · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 104371 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. CyrusOne CyrusOne PAR1 profile

    CyrusOne · Document date: Aug 28, 2026 · Primary

    Source reference: SRC-3550 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/paris-france

Reported capacity · 4.5 MW

Planned / design or future potential · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 104372 · Recorded claim type: Design · Review: Approved · Claim date: Not stated

Headline treatment: Separate claim, not added to the headline

  1. CyrusOne CyrusOne PAR1 profile

    CyrusOne · Document date: Aug 28, 2026 · Primary

    Source reference: SRC-3550 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/paris-france

Capacity basis · 4.5 MW is the current operating phase design. The separate 27 MW figure is the six hall, three phase full build plan.

Actual · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 104373 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. CyrusOne CyrusOne PAR1 profile

    CyrusOne · Document date: Aug 28, 2026 · Primary

    Source reference: SRC-3550 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/paris-france

Current phase design · 4.5 MW

Design · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 104374 · Recorded claim type: Design · Review: Approved · Claim date: Not stated

Headline treatment: Separate claim, not added to the headline

  1. CyrusOne CyrusOne PAR1 profile

    CyrusOne · Document date: Aug 28, 2026 · Primary

    Source reference: SRC-3550 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/paris-france

Full build design · 27 MW

Forecast · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 104375 · Recorded claim type: Forecast · Review: Approved · Claim date: Not stated

Headline treatment: Selected headline

  1. CyrusOne sustainability reporting

    CyrusOne · Document date: Aug 30, 2026 · Primary

    Source reference: SRC-5869 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/resources/sustainability-report

Planned data halls · 6 data halls

Forecast · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 104376 · Recorded claim type: Forecast · Review: Approved · Claim date: Not stated

  1. CyrusOne sustainability reporting

    CyrusOne · Document date: Aug 30, 2026 · Primary

    Source reference: SRC-5869 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/resources/sustainability-report

Development phases · 3 phases

Design · CyrusOne PAR1 Paris Data Center Campus (Project)

Claim 104377 · Recorded claim type: Design · Review: Approved · Claim date: Not stated

  1. CyrusOne sustainability reporting

    CyrusOne · Document date: Aug 30, 2026 · Primary

    Source reference: SRC-5869 · Fact sheet · Recorded authority: Official primary

    Source URL

    https://www.cyrusone.com/resources/sustainability-report

Counterparties and capital

CyrusOne · Developer · CMP-0172

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.