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Sabey Austin Building B

Round Rock, Texas, United StatesUnder construction
Evidence
Headline capacity
Not established in published records
Updated
Oct 28, 2026

Building B is a three-story, liquid-cooling-optimized 54 MW facility in vertical construction. Its first 18 MW is targeted for delivery in Q3 2027.

Program relationships

Capacity

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

Building B initial 18 MWUnder construction

1 building

First marketed capacity; target Q3 2027.

Building B full buildUnder construction

1 building

54 MW across six data halls.

Milestones (2)
Sabey announces Building B construction

Jul 29, 2025 · Recorded actual event

Completed · Construction started

Source not linked
Primary concrete structure rising

Q1 2026 · Recorded actual event

Completed · Status changed

Source not linked

Participants

No participants published.

Site & development

Milestone construction start

Actual

Sabey announces Building B construction

Source

Milestone construction progress

Actual

Primary concrete structure rising

Source

Additional project facts

Milestone permit registration

Actual

Building B core and shell record registered

Source

Milestone ready for service target

Actual

Initial 18 MW target

Source

Infrastructure & permits

Technical details (3)
Electric grid

Under construction

54 MW

Full Building B design.

Electric grid

Under construction

18 MW

First marketed RFS phase.

Site facility

Under construction

6 data halls

Each hall reported at 30,000 sq ft.

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

Related projects (2)
Sabey Austin Building A

Operating · Round Rock, Texas, United States

Same locality: Round Rock

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Switch Austin Rock Campus

Partially operational · Round Rock, Texas, United States

Same locality: Round Rock

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