This record consolidates 15 research observations while retaining source distinctions, location precision and unresolved fields.
| Operator / developer | Microsoft Corporation |
|---|---|
| Jurisdiction | Castroville, TX |
| Address | 18844 FM 1957 |
| Location precision | street address |
| Coordinates | Not published; no coordinate inferred |
| Capacity | Not established |
| Aliases | Microsoft Castroville Data Center Campus (SAT80 / SAT81 / SAT82) · FM 1957 campus, Castroville area · Microsoft SAT80 · Microsoft SAT81 · Microsoft SAT82 |
| Project profile | 0 rows |
|---|---|
| Intent / permits | 0 rows |
| Civic / infrastructure | 0 rows |
Two TDLR permits carry the SAT82 designation at different Medina County addresses (18844 FM 1957 and 3580 FM 471 N). Both are recorded here rather than resolved, because no primary source located this session reconciles them. Facility count within the campus is therefore uncertain.
Key data: NOT_FOUND | ERCOT | NOT_FOUND | NOT_FOUND
Claim classification: Not yet assigned
Status date: 2026-09-05
Developer: Microsoft Corporation | Owner: Microsoft Corporation | Permit applicant: Microsoft Corporation | County: Medina | Research region: San Antonio | Tenants/customers: Microsoft Azure
Claim classification: Not yet assigned
Status date: 2026-09-05
Key data: Utility region: Outside CPS Energy municipal territory; Medina County electric service not confirmed this session | Grid area: ERCOT
Claim classification: Not yet assigned
Status date: 2026-09-05
Claim classification: Not yet assigned
Status date: 2026-09-05
Key data: Permit IDs: TABS2023024471,TABS2023024474,TABS2024023976,TABS2026008231 | TABS2023024471 | TABS2023024474 | TABS2024023976 | TABS2026008231 | Jurisdictions: Medina County | State of Texas (TDLR) | ERCOT
Claim classification: Not yet assigned
Status date: 2026-09-05
Microsoft SAT80 permit registered ($135,000,000)
Claim classification: Not yet assigned
Status date: 2023-10
Microsoft SAT81 permit registered ($95,000,000)
Claim classification: Not yet assigned
Status date: 2023-10
Microsoft SAT82 permit registered ($482,600,000; 244,676 sq ft)
Claim classification: Not yet assigned
Status date: 2024-10
A second TDLR permit also labelled SAT82 registered at 3580 FM 471 N ($400,000,000; 195,670 sq ft), creating a conflict over which address carries the SAT82 designation
Claim classification: Not yet assigned
Status date: 2026-03
Texas Comptroller data center registry lists Microsoft SAT80-SAT85 among certified/registered data centers
Claim classification: Not yet assigned
TDLR permits place Microsoft SAT80 and SAT81 at an FM 1957 address near Castroville.
Key data: 18844 FM 1957, Castroville, TX 78009
Claim classification: direct_from_primary_permit_record · Verification: verified · Retrieved: 2026-09-05
Status date: 2026-03
Permit registrations record construction values for the three buildings.
Key data: $135,000,000 (SAT80); $95,000,000 (SAT81); $482,600,000 (SAT82)
Claim classification: direct_from_primary_permit_record · Verification: verified · Retrieved: 2026-09-05
Status date: 2026-03
Limitation: Values are permit-declared construction cost, not total project investment.
SAT82 permit records the building area.
Key data: 244,676 sq ft
Claim classification: direct_from_primary_permit_record · Verification: verified · Retrieved: 2026-09-05
Status date: 2026-03
A separate permit also labelled SAT82 lists a different Medina County address, which conflicts with the FM 1957 campus record.
Key data: SAT82 at 3580 FM 471 N, $400,000,000, 195,670 sq ft
Claim classification: direct_from_primary_permit_record · Verification: conflicting_sources · Retrieved: 2026-09-05
Status date: 2026-03
Limitation: Two primary permit records disagree; neither was reconciled by any other source located this session.
State data center registry lists Microsoft SAT80-SAT85 as registered Texas data centers.
Key data: Microsoft SAT80-SAT85 appear in the Comptroller data center list
Claim classification: direct_from_primary_state_registry · Verification: verified · Retrieved: 2026-09-05
Status date: 2026-03
Limitation: Registry confirms designations but not addresses or capacity.