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Compute Lives Somewhere

Bexar County

Only what we can source.

Maps that invent megawatts are worse than a blank pin. If a number is not in a filing or a named briefing, it is marked unknown.

West Bexar / Medina — schematic, not a surveyWestover / Stream / MicrosoftOmicron / TRP / Vantage / CyrusOneCastroville (planned)
  • FactPartially operating / expanding

    Stream San Antonio III

    Stream Data Centers · West Military Drive / Loop 1604, west San Antonio

    Announced capacity
    Announced 200 MW IT across five buildings; Phase 1 described as ~40 MW
    Land
    About 135 acres / 1.5 million sq ft at full campus (announced)
    Power
    On-site CPS Energy substation described at 334 MW in secondary reporting
    Cooling
    UNKNOWN / NOT PUBLICLY DISCLOSED
    Water
    UNKNOWN / NOT PUBLICLY DISCLOSED at the meter. Third-party trackers publish estimates; those are not SAWS readings.
    Incentives
    UNKNOWN / NOT PUBLICLY DISCLOSED in this dataset

    Announced capacity is design intent. Do not treat 200 MW as current draw.

    Source date 2024-06-26 (announcement); later occupancy reporting 2025 · San Antonio Express-News / company announcements

  • FactPartially operating / expanding

    Microsoft Westover / SAT campuses

    Microsoft · Westover Hills / west Bexar and nearby Medina County land holdings

    Announced capacity
    Multiple buildings. Public listings disagree on exact MW. Treat campus-level MW as incomplete.
    Land
    Microsoft has assembled large acreage in Medina County (press: >1,000 acres of holdings, not all under roof)
    Power
    Utility interconnection; details campus-by-campus are not fully public
    Cooling
    UNKNOWN / NOT PUBLICLY DISCLOSED per building
    Water
    UNKNOWN / NOT PUBLICLY DISCLOSED per building (§552.1331)
    Incentives
    UNKNOWN / NOT PUBLICLY DISCLOSED in this dataset

    Microsoft publishes global PUE/WUE, not San Antonio site meters.

    Source date 2026-08-02 · San Antonio Report

  • FactPartially operating / expanding

    CyrusOne San Antonio campuses

    CyrusOne · Westover Hills, Texas Research Park / Omicron Drive; Castroville campus planned

    Announced capacity
    Existing SAT1–SAT6 variously described (SAT1 ~9 MW; SAT2–4 campus ~36 MW; SAT5–6 ~18 MW in trade press). Castroville capacity not in the cited filing.
    Land
    Castroville: 460,000 sq ft targeted; $500 million; completion June 2027 (filing)
    Power
    Mix of CPS / cooperative service depending on site
    Cooling
    UNKNOWN / NOT PUBLICLY DISCLOSED
    Water
    UNKNOWN / NOT PUBLICLY DISCLOSED
    Incentives
    A CyrusOne reinvestment zone appears in public permit indexes; terms not summarized here

    Do not add every trade-press MW figure into one 'CyrusOne total' without primary filings.

    Source date 2026-07-18 · San Antonio Express-News / TDLR

  • FactUnder construction

    Vantage TX12 (TX1 campus)

    Vantage Data Centers · 17420 Omicron Drive, Bexar County

    Announced capacity
    Filing: up to 96 MW critical IT, 432,800 sq ft, two-story
    Land
    Part of Omicron Drive campus assembled from UT System land (2023)
    Power
    Company has discussed on-site generation at other Vantage San Antonio sites; treat as site-specific and verify in air permits
    Cooling
    Company has described closed-loop designs at public hearings. That is a design claim, not a WUE meter.
    Water
    UNKNOWN / NOT PUBLICLY DISCLOSED
    Incentives
    UNKNOWN / NOT PUBLICLY DISCLOSED in this dataset

    TX11 on the same campus was filed earlier at 32 MW.

    Source date 2025-09-23 · DatacenterDynamics

  • EstimateProposed

    CloudHQ SAT campus

    CloudHQ · Bexar County (Texas Research Park area in trackers)

    Announced capacity
    Trackers list ~600 MW proposed. That is not an operating number.
    Land
    UNKNOWN / NOT PUBLICLY DISCLOSED in primary sources used here
    Power
    UNKNOWN pending interconnection
    Cooling
    UNKNOWN / NOT PUBLICLY DISCLOSED
    Water
    Tracker estimates of millions of gallons/day are model outputs (LBNL-style WUE × MW), not bills.
    Incentives
    UNKNOWN / NOT PUBLICLY DISCLOSED

    Proposed ≠ permitted ≠ energized. Keep this row in the 'proposed' bucket.

    Source date 2026 · San Antonio Report

  • FactUnder construction

    Amazon / AWS area sites

    Amazon Data Services · Potranco / Elmendorf and other Bexar sites listed in trackers and permit indexes

    Announced capacity
    Permit indexes list discrete buildings around 18 MW each. Do not infer a campus total.
    Land
    UNKNOWN / NOT PUBLICLY DISCLOSED as a single campus figure
    Power
    Listed under cooperative and CPS-adjacent service in permit indexes
    Cooling
    UNKNOWN / NOT PUBLICLY DISCLOSED
    Water
    UNKNOWN / NOT PUBLICLY DISCLOSED
    Incentives
    UNKNOWN / NOT PUBLICLY DISCLOSED

    AWS does not publish San Antonio site-level water and power in the sources used here.

    Source date 2026 · San Antonio Report

Press tallies of “30+ operating, 23+ more” mix definitions. Industry maps (Baxtel and others) count enterprise rooms the public does not think of as hyperscale. This list prefers named campuses with a filing or a named utility briefing.

Data last checked 2026-09-04 · Current public data is a snapshot, not a live meter

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