CyrusOne SAT14A — Castroville, Texas
Overview
TYPE3’s map data lists CyrusOne SAT14A - Castroville under CyrusOne Data Centers, with `Announced` status, 0 MW, and 3397 US Hwy 90 W. The San Antonio Express-News reported on July 18, 2026 that CyrusOne plans a $500 million, 460,000-square-foot one-story data center at that address, with construction completion expected by June 2027 according to a TDLR filing. The same story says CyrusOne declined comment, that filing details can change, and that the company already has West Side and far West Side San Antonio data centers. Follow-on coverage repeats the SAT14A label and the half-billion-dollar construction figure.
CyrusOne’s first-party Medina County page places a campus near Castroville along the US-90 corridor, describes phased site preparation and later buildings, and discusses a multi-phase capital range of about $4 billion to $6 billion. That campus investment range is not SAT14A’s building cost and is not IT load. Microsoft’s TDLR SAT89/90 project at 2995 US Hwy 90 W is a different Castroville address and owner and remains unmerged.
Omicron Drive 36 MW, SAT1 Westover Hills backup-generator permits, and Constellation/Calpine MW contracts from other Texas CyrusOne campuses are not imported. The SAT14A TDLR number, parcel, substation work, cooling method, MW layer, construction progress, and availability remain to be confirmed before Announced / 0 MW changes.
Questions
What is CyrusOne SAT14A?
It is CyrusOne’s reported Castroville building at 3397 US 90 West, described as the company’s first Medina County data center and its sixth San Antonio-area facility. It is not SAT8, SAT9, or Microsoft SAT89/90.
How large is SAT14A?
Local reporting citing TDLR describes about 460,000 square feet and a $500 million estimate. CyrusOne’s broader $4–6 billion Medina campus range is multi-phase campus capital, not this building’s IT load.
Is SAT14A operating?
No. The reviewed sources describe a planned or in-progress construction project with a 2027 completion target. TYPE3’s map data remains Announced / 0 MW.
Sources
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