Microsoft Castroville SAT89-90 Data Center
Under Construction
The Microsoft Castroville SAT89-90 Data Center is a campus under construction on US Highway 90 West near Castroville in Medina County, Texas. The state registration describes two single-story data center buildings, each with five colos, totaling approximately 489,400 square feet, at an estimated cost of $765,000,000. Microsoft is the registered owner and operator. The record gives no campus electrical demand; the only published ratings are for emergency generators.
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Overview
- Campus power
- Not disclosed
- No exact-site MW figure in cited sources.
- Status
- Under Construction
- Under Construction
- IT floor area
- Not disclosed
- Campus
- Project scope
- Campus at 2995 US HWY 90 W, Castroville, TX.
- Power and grid
- No exact-site power capacity has been disclosed. ERCOT is the reported grid context; the utility and interconnection remain undisclosed.
Power and grid
- ISO / RTO
- ERCOT
- Backup generation
- Two 500 kW and sixty 3100 kW Caterpillar emergency generators installed in phases across the two buildings, burning ultra-low-sulfur or renewable diesel
Facility and development
- Water source
- East Medina County Special Utility District, under negotiation of a non-standard service agreement
- Air permits
- TCEQ Permit by Rule registration 182686 for emergency generators
- Permits and dockets
- TDLR accessibility registration TABS2025012765
- Grid record
- ERCOT
Organizations
MicrosoftOwner · Operator · DeveloperExact Asset