Data center project · Santa Clara County, California
Microsoft San Jose Data Center (Alviso)
Under construction · Two single-story Microsoft data center buildings in Alviso with 224 renewable-natural-gas backup generators, approved by the city in 2025 and now under construction. Also known as: CP23-016.
- Status
- Under construction · as of June 12, 2026
- Location
- 1657 Alviso-Milpitas Road and 4160 Zanker Road, San José · Santa Clara County
- Power
- 99 MW
99 MW maximum load per the CEC (77 MW estimated); DCD reports 48 MW in the first phase. - Floor area
- 396,914 sq ft
- Land
- 64.5 acres
- Developer and team
- Microsoft Corporation
- Utility
- PG&E (Los Esteros substation)
- Water
- Recycled water for cooling (city)
- Evidence
- Primary public records
- Size class
- 50 MW or more (tracker scope)
Updates, newest first
- June 12, 2026 DCD reported Microsoft had broken ground, with completion slated for 2028. (DatacenterDynamics, June 12, 2026)
- April 9, 2025 San José approved the planning application (CP23-016). (City of San José, Planning Division, undated)
- July 14, 2022 The CEC adopted its decision exempting the project's backup generators from state licensing (19-SPPE-04). (California Energy Commission, undated)
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