Data Center Campus
CyrusOne: Castroville SAT14 Campus
CyrusOne's Castroville SAT14 campus covers about 244 acres on US Highway 90 west of Castroville, Texas, next to Microsoft's SAT89 and SAT90 site, with service from Medina Electric Cooperative. Construction began in 2026, with a second building planned through 2028.
Campus at a Glance
CyrusOne's Castroville SAT14 campus covers about 244 acres north of US Highway 90, about 4 miles west of Castroville in unincorporated Medina County, Texas. CyrusOne markets it as its Medina County Data Center campus, with several buildings planned in phases.
Land. CyrusOne affiliate C1 Medina II LLC bought the 148.8-acre Chacon Creek Ranch tract in April 2025. CyrusOne LP added tracts of 14.3 and 81.2 acres in November 2025, and all of the land moved into C1 Medina II in January 2026. The campus adjoins Microsoft's Castroville Hwy 90 campus on the east.
Incentives. Medina County granted a tax abatement on the land, effective November 3, 2025. The agreement requires at least $300 million of investment per data center and $5 million for County Road 4516 improvements.
Power. Medina Electric Cooperative serves the site, and CyrusOne funds dedicated transmission. TCEQ registration 184983 covers 168 critical 2.25 MW diesel generators and six house generators for the first two buildings.
Buildings
Sites on this Campus
| Site | Operator | Status | Operational | Building Size | Built |
|---|---|---|---|---|---|
| CyrusOne: Castroville SAT14A | CyrusOne |
Under Construction
|
— | — | 2027 |
| CyrusOne: Castroville SAT14B | CyrusOne |
Planned
|
— | — | 2028 |
Map and Nearby Locations
CyrusOne: Castroville SAT14 Campus Power Growth Over Time
Developer
CyrusOne is a data center owner, operator, and developer that manages more than 50 facilities, with its footprint concentrated in the U.S. and Europe. The company is based in Dallas and was taken private in March 2022 by funds managed by KKR and Global Infrastructure Partners in a transaction valued at approximately 15 billion dollars including debt.
Its portfolio centers on hyperscale and enterprise colocation across multi-building campuses. CyrusOne has also pursued international growth initiatives alongside its core North American and European markets.
CyrusOne History:
- March 2022: Taken private by funds managed by KKR and Global Infrastructure Partners in an approximately 15 billion dollar all-cash transaction including debt.
- July 2015: Acquired Cervalis, adding four data centers and two disaster recovery sites in the New York metro.
- July 2014: Acquired Cervalis
- January 2013: Completed initial public offering on NASDAQ as a carve-out of Cincinnati Bell’s data center business.
- June 2010: Cincinnati Bell acquired CyrusOne for approximately 525 million dollars.
- 2000: Founded by David Ferdman.