Data Center Registry

Microsoft Alviso Data Center Campus

San Jose (Alviso), Santa Clara County, California · All 54 Microsoft sites · Every Microsoft case on our tracker

Under constructionNo reception on recordRecord updated October 19, 2026

Microsoft Alviso Data Center Campus is a data center under construction in San Jose (Alviso), California (Santa Clara County), operated by Microsoft. The public record puts it at announced June 10, 2026, 48 MW planned, 65 acres.

Every line on this page traces to a public source listed at the bottom. Where a figure was looked for and not found, the row says so. A blank is never a zero.

Facility record

Under construction

Operator: Microsoft
Facility type: Data center
Location: 1657 Alviso-Milpitas Road, San Jose (Alviso), Santa Clara County, CA
Coordinates: 37.4280, -121.9770 (approximate)
Power capacity: 48 MW planned
Land: 65 acres
Investment: Not established from a public source
Announced: June 10, 2026
Utility: Pacific Gas and Electric Company
Power source: Grid
Cooling: Not established
Water use: Not established from a public source
Jobs: Not established from a public source
Public subsidy: Not established from a public source
Community reception: No reception on record
Source confidence: Confirmed by multiple independent sources or official documentation

Timeline from the record

Newest first. Record entries come from the filings and reports the registry cites. Coverage entries are headlines from publisher feeds we monitor daily, linked to the outlet; last checked September 14, 2026.

June 10, 2026
Under construction
Status change recorded. Source: Data Center Dynamics

Opposition and litigation at this site

Nothing on record as of October 19, 2026. No lawsuit, organized opposition, or contested hearing over Microsoft Alviso Data Center Campus in San Jose (Alviso), Santa Clara County, California appears in the sources this registry tracks. That is an absence in our sources rather than a finding that none exists, and local opposition often predates any coverage a national dataset would pick up.

If you live near this site and something is happening that this page does not show, that is worth telling us. Send us the document and it goes in the record with the source attached. For sites where opposition is already established, see every contested site we track.

Power and water

CEC Small Power Plant Exemption 19-SPPE-04 (exempted 2022-07-14) covers backup generation for this site: 224 renewable-natural-gas generators rated 0.45 MW each plus two diesel administrative generators of 1.25 MW and 0.5 MW, against a stated maximum electrical load of 99 MW and an estimated operational load of 77 MW.

City of San José approved-project list (CP23-016): cooling uses non-potable treated recycled water and does not use significant amounts of potable water; heat-rejection method not specified.

Notes on the record

Microsoft's first self-owned/operated data center in San Jose. Groundbreaking June 10, 2026, target completion 2028. 64-acre site (1657 Alviso-Milpitas Rd), two-building campus. Distinct from the already-tracked Prologis San Jose records.

What the record does not establish, and the document that would

In every fight on our tracker the decisive fact came out of a public records request. These are the requests for this site.

Tax abatements or other public subsidy
Permanent jobs promised
How the community has received it

Which document closes each gap

Tax abatements or other public subsidy: The abatement, PILOT, or development agreement approved by the county, city, or development authority, and the state's data center sales tax exemption certificate if one was issued.
Permanent jobs promised: The economic development application or incentive agreement, which usually states a job commitment and a clawback.
How the community has received it: Planning commission and governing body minutes, public comment records, and any petition or lawsuit filed in the county.

Have one of these documents? Send it to us and we will add it to the record with attribution.

Other sites within 30 miles

Distances are between recorded coordinates, many of which are a city or county centroid, so treat them as approximate. Cumulative load on one utility and one aquifer is the question a planning commission rarely asks.

Google 5079 to 5087 Disk Drive Compute Campus (North San José) · San Jose · Google LLCunder 1 mile · Proposed · 250 MW · Contested
300 Holger Way Data Center (Menlo Equities conversion) · San Jose · Menlo Equities (Holger Technology Partners LLC)2 mi · Permitted
Prologis STEM Park · San Jose · Prologis2 mi · Proposed · 396 MW · Supported
Csquare SFO2 · Santa Clara · Csquare2 mi · Operating · 43.2 MW
Equinix SV4 · Sunnyvale · Equinix2 mi · Operating
QTS Santa Clara 1 · Santa Clara · QTS Data Centers2 mi · Operating · 7.5 MW
CoreSite Bowers Data Center · Santa Clara · CoreSite3 mi · Permitted · 72 MW · Mixed reception
Mission College Data Center · Santa Clara · Oppidan3 mi · Operating

Tell us about your situation

Living near Microsoft Alviso Data Center Campus?

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Questions people ask about this site

Is there opposition to the Microsoft Alviso Data Center Campus in San Jose (Alviso)?

Has anyone filed a lawsuit over the Microsoft Alviso Data Center Campus?

No lawsuit over Microsoft Alviso Data Center Campus appears in the record we track as of October 19, 2026. Residents most often reach a lawyer over water supply, well drawdown, noise from cooling plant, property value, or a rezoning approved without the notice the ordinance required. If any of that is happening near this site, it is worth a review whether or not a case has been filed yet.

How much water does Microsoft Alviso Data Center Campus use?

No water withdrawal figure for Microsoft Alviso Data Center Campus is on record here. Cooling is recorded as unknown, which is the strongest available clue: closed loop and air cooled plant draw far less than evaporative cooling. We leave the number blank rather than estimate one.

Who operates Microsoft Alviso Data Center Campus, and how big is it?

Microsoft is the operator on record. We hold 54 sites for that company across the registry. Capacity on record is 48 MW. The site is recorded at 65 acres.

How to cite this page

SueDataCenters.org Data Center Registry, "Microsoft Alviso Data Center Campus," updated October 19, 2026, https://suedatacenters.org/data-centers/microsoft-alviso-san-jose-ca.

Facility data from Compute Atlas (E. Kubiak), version 1.34.1 (October 4, 2026), licensed CC BY 4.0, record https://www.compute-atlas.com/facilities/microsoft-alviso-san-jose-ca, retrieved October 29, 2026.

Corrections with a public source are welcome at the Compute Atlas record or through our contact page. The whole registry is available as CSV and JSON under CC BY 4.0.

Sources for this record

As compiled and cited by Compute Atlas, with our own reporting appended. Archived links are used where the original has moved.

1.Microsoft breaks ground on Alviso data center campus in San Jose, California · Data Center Dynamics · retrieved July 17, 2026
2.Microsoft breaks ground on new data center in San Jose · NBC Bay Area · retrieved July 17, 2026
3.Microsoft breaks ground on data center in Alviso · SV Daily · retrieved July 17, 2026
4.Connect CRE, Microsoft Breaks Ground on Long-Planned North San Jose Data Center Site · retrieved July 25, 2026
5.HITT Contracting breaks ground on Microsoft Alviso datacenter · HITT Contracting · retrieved September 14, 2026
6.San Jose Data Center (19-SPPE-04), applicant Microsoft Corporation, 1657 Alviso-Milpitas Road · California Energy Commission · retrieved October 19, 2026
7.CPUC Resolution E-5439: PG&E agreements to energize Microsoft's new 90 MW data center (SJC02) at 1657 Alviso-Milpitas Road, San Jose · California Public Utilities Commission · retrieved September 21, 2026
8.City of San José, Data Center and other Large Energy-Use Projects (application list updated 2026-07-13; Wayback capture 2026-08-13) · City of San José Planning Division · retrieved October 19, 2026
9.'Full-on Backlash' Against Data Centers Occurring as San José Courts Them · KQED · retrieved September 29, 2026

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