Microsoft Alviso Data Center
- Headline capacity
- Not established in published records
- Updated
- Oct 28, 2026
Microsoft began site preparation for a new multi-phase data center in Alviso, San Jose. Microsoft confirms construction activity but does not publish a defensible facility megawatt figure. Microsoft, HITT Contracting is associated with the development in San Jose, Santa Clara County, CA, US. The disclosed development scope includes site preparation began in fall 2025; initial earthmoving and soil remediation; multi-phase development. Power and physical infrastructure include new multi-phase cloud data center development. Microsoft does not publish an Alviso facility MW figure. The available public sources do not establish a project-scoped operating or contracted capacity figure.
Capacity
Operating IT capacity: Not established in published records
A missing figure does not mean zero. Planned, utility and generation figures are not operating IT capacity.
Development
Project-wide phase for Microsoft Alviso Data Center; capacity class is unresolved.
Milestones (2)
Nov 19, 2025 · Recorded actual event
Completed · Announced
Source not linkedDate not disclosed · Forecast / planned record
Forecast · Forecast completion
Source not linkedParticipants
Developer
Sources by role
Developer (1)
- Alviso datacenter construction update · Nov 19, 2025 · Primary
Other participants (1)
Contractor
Sources by role
Contractor (1)
- Alviso datacenter construction update · Nov 19, 2025 · Primary
Site & development
Technical specifications
Additional project facts
Infrastructure & permits
Technical details (2)
Planned or represented
Microsoft does not publish an Alviso facility MW figure.
Planned or represented
New multi-phase cloud data center development.
Project map
Public-source research. Plans may change. See Evidence for sources and qualifications.