Skip to content
CARTIS

CyrusOne DUB1 Dublin Data Center Campus

Grange Castle, Dublin, County Dublin, IrelandPartially operational
Evidence
Planned critical IT
54 MW
Updated
Oct 28, 2026
Utility
EirGrid

CyrusOne DUB1 Dublin Data Center Campus, also known as CyrusOne DUB1, is a partially operational data center campus in Dublin, Leinster, IE associated with CyrusOne. Three two-story buildings; 22,854 square metres; potential 54 MW total IT capacity. Carrier-neutral Dublin campus with dual redundant power and renewable-energy sourcing. 54 MW is the potential three-building campus total. The first building is complete, but a phase-specific operating IT figure is not published.

Capacity

Reported capacity

Design

54 MW

Source

Reported capacity

Planned / design or future potential

54 MW

Source

Reported capacity

Planned / design or future potential

54 MW

Source

Full build potential

Planned / design or future potential

54 MW

Source

Operating IT capacity: Not established in published records

A missing figure does not mean zero. Planned, utility and generation figures are not operating IT capacity.

Development

Three-building DUB1 campusPartially operational

3 buildings

54 MW is potential IT capacity across three buildings, not verified operating load.

Operating facility and documented expansionPartially operational

54 MW is the potential three-building campus total. The first building is complete, but a phase-specific operating IT figure is not published.

Milestones (2)
EirGrid connection agreement was reported for the phased campus

Jan 2020 · Recorded actual event

Completed · Announced

Source not linked
Environmental record documented the first building under construction

Jan 2021 · Recorded actual event

Completed · Status changed

Source not linked

Participants

CyrusOne

Developer

Sources by role
Developer (1)
Other participants (1)
EirGrid

Utility provider

Sources by role
Utility provider (1)

Site & development

Location context

Actual

CyrusOne DUB1 | Grange Castle, Dublin | County Dublin | IE

Source

Location context

Actual

CyrusOne DUB1 | Grange Castle, Dublin | County Dublin | IE

Source

Building count

Design

3 buildings

Source

Technical area

Design

22,854 square metres

Source

Location context

Actual

CyrusOne DUB1 | Dublin | Leinster | IE

Source

Building count

Design

3 buildings

Source

Development area

Design

35,426 square metres

Source

First building

Actual

Completed; operating MW not disclosed

Source

Additional project facts

Lifecycle status

Actual

Operational

Source

Capacity basis

Actual

CyrusOne publishes 54 MW of critical IT capacity for this record boundary.

Source

Lifecycle status

Actual

Partially operational

Source

Capacity basis

Actual

CyrusOne currently describes 54 MW as the campus potential across three buildings. Earlier launch material cited 74 MW total power; Cartis publishes 54 MW only as a future IT envelope, not current operating load.

Source

Utility supply

Design

80 MVA

Source

Lifecycle status

Actual

Partially operational

Source

Capacity basis

Actual

54 MW is the potential three building campus total. The first building is complete, but a phase specific operating IT figure is not published.

Source

Infrastructure & permits

Technical details (5)
Electric grid

Energized

80 MVA active-active supply, dedicated electrical plant per floor, closed-loop cooling and diverse carrier-neutral fiber.

Cooling system

Operational

Operator describes resilient cooling; Public sources do not establish water use or delivered capacity beyond the cited project specification.

Electric grid

Energized

Carrier-neutral Dublin campus with dual redundant power and renewable-energy sourcing.

Cooling system

Operational

Cooling and efficiency claims remain limited to source-defined designs; no delivered load or water use is inferred.

Electric grid

Secured or contracted

EirGrid connection agreement supports phased development; contracted supply is not disclosed operating IT.

Building · Issued

CyrusOne DUB1

An Bord Pleanála

Jan 1, 2021

Sources (1)

Public-source research. Plans may change. See Evidence for sources and qualifications.