# CyrusOne San Antonio IV

ERCOT data center · https://askthegrid.com/assets/facilities/cyrusone-san-antonio-iv

CyrusOne operates San Antonio IV (SAT4), a colocation and cloud facility at 9655 Raba Drive in San Antonio, built in 2017 and part of the larger SAT2-SAT4 campus. CyrusOne reports a 36 MW total IT capacity and 18 MW distributed redundant power configuration for the SAT2-SAT4 campus, though these figures are not allocated specifically to SAT4.

## Identity and location

- Operating status: operating
- Asset scope: facility
- Location: 9655 Raba Drive, San Antonio, Bexar County, TX
- Operator: CyrusOne (exact asset) — https://www.cyrusone.com/

## Power and grid context

- Critical it load: 36 MW · operating · campus · SAT2-SAT4 — CyrusOne reports 36 MW of total IT capacity for the SAT2-SAT4 campus; this is a campus-level figure and is not attributable solely to SAT4.
- Utility service: 18 MW · reported · campus · SAT2-SAT4 — CyrusOne describes an 18 MW distributed redundant power configuration for the SAT2-SAT4 campus. The source does not establish that this is SAT4-only or state whether it is utility service, energized capacity, or another capacity category.
- ISO/RTO: ERCOT
- Balancing authority: ERCOT
- Electric utility: CPS Energy

## Development

- Site status: Operating
- Construction: CyrusOne San Antonio IV (SAT4) is an operating facility at 9655 Raba Drive. Available evidence reports it as built in 2017; no exact-site construction start or completion date was identified. The operator's published 295,785 sq. ft. and 36 MW figures apply to the combined SAT2-SAT4 campus and are not allocated specifically to SAT4.

## Compute and operations

- Facility classes: colocation, cloud, hyperscale, enterprise, ai_hpc
- Workloads: high-performance computing (HPC), cloud workloads, AI workloads, enterprise workloads, mission-critical workloads, high-density workloads, colocation deployments, hybrid- and multi-cloud deployments
- Operating context: Operational CyrusOne SAT4 at 9655 Raba Drive, within the San Antonio SAT2-SAT4 campus. Public descriptions identify it as a purpose-built, customizable colocation facility supporting enterprise, cloud, hyperscale, HPC, and high-density deployments, with redundant power and cooling infrastructure and a 100% uptime service-level description. A public facility profile reports an 18 MW distributed redundant power configuration, but this is not treated as critical IT load.

## Sources

- [http://baxtel.com/data-center/cyrusone-sat4](http://baxtel.com/data-center/cyrusone-sat4)
- [http://datacenterdynamics.com/en/news/vantage-voltagrid-face-lawsuit-concerning-natural-gas-powered-off-grid-data-centers-in-san-antonio-texas](http://datacenterdynamics.com/en/news/vantage-voltagrid-face-lawsuit-concerning-natural-gas-powered-off-grid-data-centers-in-san-antonio-texas)
- [http://dchub.cloud/facilities/national-security-agency-texas-cryptologic-center-4ccc3735](http://dchub.cloud/facilities/national-security-agency-texas-cryptologic-center-4ccc3735)
- [http://ercot.com/](http://ercot.com/)
- [CyrusOne: SAT4 Data Center](https://baxtel.com/data-center/cyrusone-sat4)
- [Chapter 312 Abatement Reports](https://comptroller.texas.gov/economy/development/search-tools/ch312/abatements-details.php?id=000004667)
- [Fetched web page](https://cyrusone.com/hubfs/Website%20Documents%202025/2025%20Sustainability%20Report.pdf?hsLang=en)
- [Lowe's Chooses San Antonio for Data Center](https://datacenterknowledge.com/business/lowe-s-chooses-san-antonio-for-data-center)
- [Why San Antonio's far West Side is a hot spot for data centers](https://expressnews.com/business/real-estate/article/sanantonio-data-centers-west-18285270.php)
- [CyrusOne San Antonio IV: data center in Bexar, TX](https://morethanjustparks.com/data-center-tracker/cyrusone-san-antonio-iv-tx--9fe6562a-ff79-4acf-a835-59ca37b03b5c)
- [Fetched web page](https://webapp9.sanantonio.gov/FileNetArchive/%7B59DC3442-B330-441B-B704-889A4EAC0DAE%7D/%7B59DC3442-B330-441B-B704-889A4EAC0DAE%7D.pdf)
- [20 13 - 0 q - 0 5 - 0 609](https://webapp9.sanantonio.gov/FileNetArchive/%7BACAFF2AF-7085-4C6A-B02B-D91E2A8B5BBA%7D/%7BACAFF2AF-7085-4C6A-B02B-D91E2A8B5BBA%7D.pdf)
- [CyrusOne: Home](https://www.cyrusone.com/)
- [Sustainability | CyrusOne](https://www.cyrusone.com/commitments/sustainability)
- [Data Center Campus -- San Antonio: SAT2-SAT4 | CyrusOne](https://www.cyrusone.com/data-centers/north-america/san-antonio-sat2-sat4)
- [Colocation Data Center Solutions](https://www.cyrusone.com/solutions/colocation)
- [CyrusOne - San Antonio, TX | datacenter.fyi](https://www.datacenter.fyi/public-record/3180a7ec)
- [CyrusOne announces sixth data center campus in San Antonio, Texas - DCD](https://www.datacenterdynamics.com/en/news/cyrusone-announces-sixth-data-center-campus-in-san-antonio-texas/)
- [CyrusOne SAT4 - San Antonio Data Center | 9655 Raba Drive](https://www.datacentermap.com/usa/texas/san-antonio/cyrusone-sat4-san-antonio/)
- [CyrusOne: SAT4 - San Antonio Data Center](https://www.datacenters.com/cyrusone-sat4-san-antonio)
- [Data centers spanning 1.7 million square feet planned for San Antonio](https://www.expressnews.com/business/real-estate/article/san-antonio-data-centers-stream-campus-19540823.php)
- [Fetched web page](https://www.sanantonio.gov/portals/0/files/dsd/pastgranted/2016/2016-10-01.pdf)
- [CyrusOne Data Centers Issuer I LLC (Series 2024-1)](https://www.spglobal.com/ratings/en/regulatory/article/-/view/sourceId/13021245)
- [Fetched web page](https://www.tceq.texas.gov/assets/public/permitting/air/publicnotice/38610sob.pdf)
- [Fetched web page](https://www.tceq.texas.gov/assets/public/permitting/air/reports/applications/38610-ac.pdf)

## Data quality

- The exact asset is CyrusOne San Antonio IV, also called SAT4, at 9655 Raba Drive, San Antonio, Texas 78251, within the SAT2-SAT4 campus.
- The 2013 city records describe a CyrusOne project on a 14.574-acre site between Raba Drive and Portola Boulevard but do not use the later SAT4 name; the linkage is based on the matching operator and Raba Drive location.
- A local article identifies a CyrusOne facility along Lambda Drive near Omicron Drive, not 9655 Raba Drive, so it is treated as nearby/operator-context evidence rather than exact-SAT4 evidence.
- No exact-asset tenant, cloud customer, quantified water use, power-demand figure, building count, equipment inventory, or commercial terms were identified.
- Power values retain their reported, requested, contracted, energized, gross-campus, or critical-IT basis.

---

Canonical page: https://askthegrid.com/assets/facilities/cyrusone-san-antonio-iv
Profile generated: 2026-07-28T00:03:52.286424Z
Source: Ask the Grid — https://askthegrid.com/