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CyrusOne NYM5 Norwalk Data Center

Norwalk, Connecticut, United StatesOperating
Evidence
Planned critical IT
16 MW
Updated
Oct 28, 2026

CyrusOne NYM5 Norwalk Data Center, also known as CyrusOne NYM5, is a data center project in Norwalk, CT, US associated with CyrusOne. New York metro facility; 168,000 square feet of technical IT space; up to 16 MW of power. Dual-utility facility with N+1 cooling, carrier-neutral connectivity and extensive business-continuity space. CyrusOne’s current NYM5 profile reports 4 MW of IT capacity. The legacy 16 MW figure described a wider facility power ceiling and is not retained as the public IT headline.

Capacity

Reported capacity

Design

16 MW

Source

Reported capacity

Planned / design or future potential

4 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

Operating facility and documented expansionOperational

CyrusOne’s current NYM5 profile reports 4 MW of IT capacity. The legacy 16 MW figure described a wider facility power ceiling and is not retained as the public IT headline.

Participants

CyrusOne

Developer

Sources by role
Developer (1)

Site & development

Location context

Actual

CyrusOne NYM5 | Norwalk | CT | US

Source

Location context

Actual

CyrusOne NYM5 | Norwalk | CT | US

Source

Building area

Actual

168,000 square feet

Source

Work area recovery

Actual

30,000 square feet

Source

Additional project facts

Lifecycle status

Actual

Operational

Source

Capacity basis

Actual

CyrusOne publishes up to 16 MW for NYM5; Cartis records 16 MW as the facility design ceiling.

Source

Lifecycle status

Actual

Operating

Source

Capacity basis

Actual

CyrusOne’s current NYM5 profile reports 4 MW of IT capacity. The legacy 16 MW figure described a wider facility power ceiling and is not retained as the public IT headline.

Source

Utility feeds

Actual

3 feeds

Source

Infrastructure & permits

Technical details (2)
Electric grid

Energized

Dual-utility facility with N+1 cooling, carrier-neutral connectivity and extensive business-continuity space.

Cooling system

Operational

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

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