# Stream Data Centers San Antonio III Data Center Campus

ERCOT data center · https://askthegrid.com/assets/facilities/stream-data-centers-san-antonio-iii-data-center-campus--grid-load-f13b4e83076ad739

The Stream Data Centers San Antonio III campus, called SATB, is a 135-acre hyperscale campus on West Military Drive near Loop 1604 in Bexar County, Texas. Its first building, SATB1, is commissioned and fully leased, and the Texas Comptroller data-center list names Microsoft Corporation as the registered occupant. Stream plans up to five buildings supporting up to 200 MW of IT capacity at full build, with later buildings scheduled for occupancy between 2028 and 2031. CPS Energy serves the campus through a planned on-site 334 MW substation that CPS Energy is to build, with near-term gas bridging offered until grid capacity ramps up.

## Identity and location

- Operating status: operating
- Asset scope: campus
- Location: 11203 W Military Drive, San Antonio, Bexar County, TX
- Developer: Stream Data Centers (exact asset)
- Operator: SDC SA III, L.P. (exact asset)
- Owner: SDC SA III, L.P. (exact asset)
- Tenant: Microsoft (exact asset)

## Power and grid context

- Critical it load: Up to 200 MW · proposed · exact asset — Full-build IT capacity of the campus
- Reported unspecified: 40 MW · proposed · exact asset — Size of each of the planned buildings; load basis not stated
- ISO/RTO: ERCOT
- Electric utility: CPS Energy
- Substation: On-site dual-fed breaker-and-a-half CPS Energy substation with 2N configuration to each building

## Compute and operations

- Facility classes: hyperscale
- Announced tenants: Microsoft Corporation
- Critical IT load: 200 MW

## Sources

- [www.streamdatacenters.com](https://www.streamdatacenters.com/wp-content/uploads/2026/04/SDC_SATB_CampusSpecSheet_20260408v4.pdf)
- [Stream Data Centers Breaks Ground on New Hyperscale Data Center Campus in San Antonio - Stream Data Centers](https://www.streamdatacenters.com/news/breaks-ground-hyperscale-campus-san-antonio/)
- [https://records.tceq.texas.gov/cs/idcplg?IdcService=TCEQ_EXTERNAL_SEARCH_GET_FILE&Rendition=Web&dID=8623566](https://records.tceq.texas.gov/cs/idcplg?IdcService=TCEQ_EXTERNAL_SEARCH_GET_FILE&Rendition=Web&dID=8623566)
- [TDLR TABS - Project Details](https://www.tdlr.texas.gov/TABS/Projects/TABS2024001885)
- [Data Centers in Texas](https://comptroller.texas.gov/taxes/data-centers/data-center-lists.php)
- [Data Centers San Antonio | Texas Colocation](https://www.streamdatacenters.com/locations/san-antonio-iii/)
- [https://geocoding.geo.census.gov/geocoder/geographies/onelineaddress?address=11203+W+Military+Drive%2C+San+Antonio%2C+TX&benchmark=Public_AR_Current&vintage=Current_Current&format=json](https://geocoding.geo.census.gov/geocoder/geographies/onelineaddress?address=11203+W+Military+Drive%2C+San+Antonio%2C+TX&benchmark=Public_AR_Current&vintage=Current_Current&format=json)

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Canonical page: https://askthegrid.com/assets/facilities/stream-data-centers-san-antonio-iii-data-center-campus--grid-load-f13b4e83076ad739
Profile generated: 2026-11-02T19:59:46.889238Z
Source: Ask the Grid — https://askthegrid.com/