This record consolidates 16 research observations while retaining source distinctions, location precision and unresolved fields.
| Operator / developer | Stream Data Centers |
|---|---|
| Jurisdiction | San Antonio, TX |
| Address | 11203 Military Dr W |
| Location precision | street address |
| Coordinates | Not published; no coordinate inferred |
| Capacity | Not established |
| Aliases | Stream Data Centers San Antonio III · SAT B1 / SAT 23 · SDC SATB1 · Stream SAT 23 · Stream San Antonio III Campus |
| Project profile | 0 rows |
|---|---|
| Intent / permits | 0 rows |
| Civic / infrastructure | 0 rows |
Sources conflict on the groundbreaking date (June 26, 2024 per the community tracker; 'broke ground in July' per DatacenterDynamics) and on full-build area (1.5 million sq ft in most sources; 2 million sq ft in one tracker timeline entry).
Key data: CPS Energy | ERCOT | San Antonio Water System (SAWS) | NOT_FOUND
Claim classification: Not yet assigned
Status date: 2026-09-05
Developer: Stream Data Centers (development arm of Stream Realty Partners) | Owner: SDC SA III, L.P. (owner of record in the Texas Comptroller registry for SDC SATB1) | Property entity: SDC SA III, L.P. | Permit applicant: Stream Data Centers | County: Bexar | Research region: San Antonio | Tenants/customers: Microsoft Corporation (registered occupant of SDC SATB1 in the Texas Comptroller registry)
Claim classification: Not yet assigned
Status date: 2026-09-05
Key data: Utility: CPS Energy | Utility region: CPS Energy / ERCOT | Grid area: ERCOT | Substations: On-site dual-fed breaker-and-a-half CPS Energy substation rated 334 MW, with 2N configuration to each building (operator-stated)
Claim classification: Not yet assigned
Status date: 2026-09-05
Key data: Water utility: San Antonio Water System (SAWS) | Water demand: Community tracker models 1.8M-2.6M gal/day at 200 MW full build using an LBNL benchmark; the operator states zero-water cooling (WUE=0) | Cooling: Zero-water-use cooling systems, WUE=0; data halls designed for air-cooled and/or liquid-cooled IT (operator-stated)
Claim classification: Not yet assigned
Status date: 2026-09-05
Key data: Permit IDs: TABS2024023923,TABS2024024100,TABS2025001225,TABS2025001231,TABS2025003451 | TABS2024023923 | TABS2024024100 | TABS2025001225 | TABS2025001231 | TABS2025003451 | Jurisdictions: City of San Antonio | Bexar County | State of Texas (TDLR) | ERCOT | CPS Energy | SAWS | Tax incentives: [object Object] | {"agreement_name":"Registered Qualifying Data Center Project - SDC SATB1","agreement_number":"DC615003-OW1 / DC615003-OC1 / DC615003-OP1","approval_date":"2024-03-10","estimated_value":"NOT_FOUND (state sales-and-use tax exemption)","government_entity":"Texas Comptroller of Public Accounts","investment_commitment":"NOT_FOUND","jobs_commitment":"NOT_FOUND","source_url":"https://comptroller.texas.gov/taxes/data-centers/data-center-lists.php","term":"NOT_FOUND"}
Claim classification: Not yet assigned
Status date: 2026-09-05
Community tracker places the site in the Edwards Aquifer recharge zone
Claim classification: Not yet assigned
Status date: 2026-09-05
Stream Data Centers breaks ground on the 135-acre hyperscale campus
Claim classification: Not yet assigned
Status date: 2024-06-26
SDC SATB1 registered as a Qualifying Data Center Project with Microsoft as occupant
Claim classification: Not yet assigned
Status date: 2024-03-10
Phase 1 (40 MW, 300,000 sq ft) enters service
Claim classification: Not yet assigned
Status date: 2025-Q2
SAT 23 Data Hall 5 fit-out permit registered ($10,000,000; 24,000 sq ft)
Claim classification: Not yet assigned
Status date: 2024-11-01
TDLR data hall fit-out permits give the campus address and facility code.
Key data: 11203 Military Dr W, San Antonio, TX; facility 'SAT B1'
Claim classification: direct_from_primary_permit_record · Verification: verified · Retrieved: 2026-09-05
Status date: 2025-Q2
Operator describes a large on-site CPS Energy substation serving the campus.
Key data: On-site dual-fed breaker-and-a-half CPS substation, 334 MW, 2N to each building
Claim classification: direct_from_operator_publication · Verification: verified · Retrieved: 2026-09-05
Status date: 2025-Q2
Limitation: No CPS Energy filing retrieved to confirm the 334 MW rating.
Operator states a zero-water cooling design.
Key data: Zero-water-use cooling systems; WUE=0
Claim classification: direct_from_operator_publication · Verification: verified · Retrieved: 2026-09-05
Status date: 2025-Q2
Limitation: Contradicts the tracker's modeled 1.8M-2.6M gal/day estimate, which assumes evaporative cooling.
Comptroller registry names Microsoft Corporation as occupant of SDC SATB1.
Key data: Owner/operator SDC SA III, L.P.; occupant Microsoft Corporation; effective 03/10/2024
Claim classification: direct_from_state_registry · Verification: verified · Retrieved: 2026-09-05
Status date: 2025-Q2
Operator and tracker agree on the campus capacity program.
Key data: Up to 200 MW across up to five buildings and 1.5 million sq ft; $400M investment; Phase 1 40 MW / 300,000 sq ft
Claim classification: direct_from_operator_publication · Verification: corroborated · Retrieved: 2026-09-05
Status date: 2025-Q2
Tracker reports partial operation from Q2 2025.
Key data: Partially Operational; Phase 1 delivered 40 MW of the planned 200 MW
Claim classification: community_maintained_tracker · Verification: partially_verified · Retrieved: 2026-09-05
Status date: 2025-Q2