SAT82 Data Center

Approved · Microsoft · 18844 FM1957, San Antonio, TX

Microsoft is developing SAT82, a 244,676-square-foot data-center building at 18844 FM 1957 in Castroville with five colocation areas, estimated at $482.6 million. Permitted construction is scheduled to start April 11, 2026, with completion targeted for February 8, 2028; no power capacity or commercial-operation date is specified.

Website Open in grid

Overview

Status: Approved
Construction start scheduled Apr 11, 2026
Exact-site power: Not disclosed
No exact-site MW figure in cited sources.
Facility size: 244,676 sq ft
1 reported building · Building
Project cost: $482.6M
Estimated construction cost in the cited project filing.

SAT82 Data Center

Approved · Microsoft · 18844 FM1957, San Antonio, TX

Microsoft is developing SAT82, a 244,676-square-foot data-center building at 18844 FM 1957 in Castroville with five colocation areas, estimated at $482.6 million. Permitted construction is scheduled to start April 11, 2026, with completion targeted for February 8, 2028; no power capacity or commercial-operation date is specified.

Website Open in grid

Overview

Status: Approved
Construction start scheduled Apr 11, 2026
Exact-site power: Not disclosed
No exact-site MW figure in cited sources.
Facility size: 244,676 sq ft
1 reported building · Building
Project cost: $482.6M
Estimated construction cost in the cited project filing.

Build window

Apr 11, 2026–Feb 8, 2028

SAT82 Data Center, TDLR project TABS2024023976, is a one-story Microsoft data-center building with five colocation areas at 18844 FM 1957, Castroville, Medina County, Texas. The filing lists an estimated cost of $482.6 million and approximately 244,676 square feet of gross building area. No power capacity or commercial-operation date is stated.

Building program

1 building · one-story

SAT82 Data Center

Profile

Project scope: SAT82 Data Center is a privately funded Microsoft new-construction project at 18844 FM 1957, Castroville, Texas. The permit describes a one-story building with five colocation areas and approximately 244,676 square feet of gross building area.
Power and grid: No exact-site power capacity has been disclosed. ERCOT is the available grid context; the utility and interconnection remain undisclosed.
Compute role: Planned Microsoft SAT82 data-center building at 18844 FM 1957 in Castroville, Texas. The official filing describes a one-story, approximately 244,676-square-foot building with five colocation areas; construction was scheduled from April 11, 2026 through February 8, 2028.
Cooling and environment: Asset-specific cooling design and water demand are not disclosed.
Local reporting: Reports that SAT82 is planned at 18844 FM 1957 in Castroville, on the same site as SAT81, with an estimated $482 million cost and construction scheduled from April 2026 through February 8, 2028.

Organizations

Material, source-backed organizations directly involved with this facility or its parent campus. Duplicate legal names and incidental community mentions are excluded.

OrganizationRoleScope

MicrosoftOwner · OperatorExact Asset

Medina Electric Cooperative, Inc.UtilityExact Asset

WSP USA, Inc.Design FirmExact Asset

Texas Department of Licensing and RegulationRegulatorExact Asset

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Jul 30, 2024
Jul 30, 2024
Microsoft plans $482M data center in Medina CountyMy San Anto...
Identifies SAT82 as a new Microsoft data center at 18844 FM 1957 in Castroville and describes the project as a roughly $482 million expansion at the existing Microsoft site.
Oct 10, 2024
Oct 10, 2024
The data centers of Medina CountyOff the Kuff
Summarizes reporting that specifically names SAT82, including a 15-year, 80% Medina County property-tax abatement and the county's estimate of substantial tax-generating capacity. It also describes neighboring residents' dust and noise concerns from the broader Microsoft construction activity.
Jul 5, 2025
Jul 5, 2025
How Microsoft is pouring $1.5B into a tiny Hill Country townMy San Anto...
Reports that SAT82 is planned at 18844 FM 1957 in Castroville, on the same site as SAT81, with an estimated $482 million cost and construction scheduled from April 2026 through February 8, 2028.
Aug 24, 2025
Aug 24, 2025
Mega data hub plans spark concerns in tiny Texas townMy San Anto...
Reports community concerns about Microsoft's broader Medina County expansion, including traffic, water consumption, and growth impacts. The article's exact-site reference is to Microsoft SAT81 at 18844 FM 1957, so its reactions should be treated as campus-level context rather than SAT82-specific testimony.
Apr 11, 2026
Apr 11, 2026
SAT82 Data Center construction start scheduled
SAT82 Data Center, TDLR project TABS2024023976, is a one-story Microsoft data-center building with five colocation areas at 18844 FM 1957, Castroville, Medina County, Texas. The filing lists an estimated cost of $482.6 million and approximately 244,676 square feet of gross building area. No power capacity or commercial-operation date is stated.
Feb 8, 2028
Feb 8, 2028
SAT82 Data Center construction completion scheduled
SAT82 Data Center, TDLR project TABS2024023976, is a one-story Microsoft data-center building with five colocation areas at 18844 FM 1957, Castroville, Medina County, Texas. The filing lists an estimated cost of $482.6 million and approximately 244,676 square feet of gross building area. No power capacity or commercial-operation date is stated.