Center Registry · Texas

Stargate Milam County (Freebird)

SB Energy · Burlington, Milam County, Texas

Verified by Center RegistryChecked against 4 sources, including primary filings and releases
Open on the map →
753 MW
Critical IT planned
0 MW
Energized today
2026-08 target for interconnection Phase 1-A
First power
ERCOT
Grid region · location approximate
In brief

What makes it notable.

  1. The owner-builder funds powered infrastructure in ERCOT: phased high-voltage interconnection totaling about 660 MW initially, from 200 MW at 34.5 kV targeted August 2026 to a March 2027 switchover, plus co-located generation.
  2. A greenfield build on 595 acres designed by Corgan. Phase 1 was filed in October 2025 and topped out in March 2026, at 548,950 square feet.
  3. Planned critical capacity is 753 MW across two buildings, with the last ready-for-service dates falling in 2028, and energization of the first interconnection phase not yet confirmed.
Deal anatomy

Six layers, and who holds each.

Every Registry site is read the same way: a campus is real when each layer has a name. Members see the anchor tenant and the capital.

Power
SB Energy
Site and build
SB Energy (owner-builder)
Compute
Undisclosed
Cloud operator
OpenAI
Anchor tenant
Members
Capital
Members
Free for professionals in AI infrastructure.
Timeline

From here to full build.

  1. 2026-08 target for interconnection Phase 1-AFirst power200 MW); energization not yet confirmed
  2. Nov 2026Today
  3. 2028Full buildoutlast RFS for both buildings per the S-1
The detail

Each party's role.

Power

SB Energy. Provides the powered infrastructure in ERCOT: high-voltage interconnection in phases (1-A 200 MW at 34.5 kV Aug 2026, 1-B 230 MW at 345 kV Dec 2026, 1-C 230 MW Feb 2027, 1-D switchover Mar 2027, ~660 MW initial) plus co-located generation under on-site power supply agreements; SB Energy has said it will fund and build new generation and storage for the campus to protect Texas ratepayers

Site and build

SB Energy (owner-builder). Greenfield build via Milam County Data Center LLC on a 595-acre campus; phase 1 start filed 2025-10, topped out Mar 2026; design by Corgan

Compute

Undisclosed. No compute vendor named; the OpenAI first-party design announcements do not disclose suppliers inferred

Cloud operator

OpenAI. Runs its own workloads under its first-party facility design; SB Energy operates the physical plant inferred

Related sites

Nearby in the buildout.

All AI data centers in Texas →

Under constructionBarber LakeCipher Mining · TX · 207 MW Under constructionBeacon PointHut 8 · TX · 704 MW LiveBlack PearlCipher Mining · TX · 216 MW Under constructionCedarvale (Barstow)Nscale · TX · 700 MW
Sources

The record behind this page.

Center Registry

Who keeps this record.

Center Registry tracks the US AI data center buildout site by site. Every record is checked against primary sources: SEC filings, company releases, utility and grid operator records. A record changes when a filing changes it.

The mapEvery verified site, with its stage, capacity and grid region.Open the map → How sites are verifiedWhat gets a site on the Registry, and what each confidence tag means.About the Registry → Free membershipFor professionals in AI infrastructure. Opens the anchor tenant, the capital and the next milestone.Join free →

Need capacity in Texas?

Looking for GPU colocation or a campus in Texas? Tell us the megawatts and the date, and a reply comes back within one business day. Hold a powered site there yourself? Tell us about it.

Tell us what you need →