This is a source-attributed discovery row. It can help you find a place and its citations; it is not a DataCenterData finding that the facility is distinct or currently operating.
Reported geography
Source-reported location for STACK SVY03A.
Approximate source coordinates; this is not a parcel claim. Nearby source points are combined into one accessible target that opens this exact map scope. View these exact rows on the interactive map →
Source row snapshot
- Operator as published
- STACK Infrastructure
- Address and locality
- 26203 Production Avenue · Hayward · Alameda County · California · 94545
- Official metro area
- San Francisco-Oakland-Fremont, CA
- Source-reported status
- under construction
- Provider facility type
- data center
- Reported capacity
- Planned: 67.2 MW (source-reported; boundary not independently verified; MW measure not stated by provider)
- Source freshness
- 29 September 2026
- Location precision
- approximate
- Compute Atlas confidence label
- confirmed (provider's classification; not a DataCenterData check)
- Stable directory ID
dcd-dir-001358
Reported details
Source-reported by Compute Atlas; not independently verified by DataCenterData. Provider wording is kept; long provider notes are shortened and marked …; unknown is not zero; none of these values is totaled, ranked or compared.
- Power source
- Grid
- On-site generation
- 76.6 MW (source-reported)
- Land area
- 11.3 acres (source-reported; parcel boundary not established)
- Announced jobs
- 41 permanent · 380 construction
- Community response
- Provider label: contested
Provider notes
Energy. 76.6 MW is CEC SPPE-disclosed backup-generator capacity (docket 23-SPPE-01, 28 generators), not IT/critical load.
Community. Approved via a zoning classification (Hayward Municipal Code Section 10-1.1604) that treated data centers as "office use," letting the project bypass City Council-level review and go through Planning Commission alone. Council members publicly raised concerns about the project's power and water draw; the developer added a $2M Public Benefits Package (up from an initial $1.3M offer) during the approval process. …
What the source record says
STACK's first tracked East Bay CA site (existing STACK entries stack-svy01-ca/San Jose and stack-svy02-ca/Santa Clara are both South Bay). 300,000 sq ft campus at Production Ave/Investment Blvd: 3-story primary data center building + 1-story secondary building, height 100ft (+8ft variance approved); site plan also shows frontage on Eden Landing Road, treated as the same 11.3-acre parcel, not a separate site. energy.onSiteGenerationMw reflects the CEC SPPE-disclosed backup-generator capacity (28 generators across two yards, docket 23-SPPE-01) - this is NOT a disclosed IT/critical-load figure; no whole-facility IT MW is publicly disclosed anywhere. The 76.6 MW figure supersedes the original CEQA filing's 67.2 MW. Jobs figures (41 permanent, ~380 construction) are single-sourced to local press (Tri City Voice; Hayward Herald ran the same underlying story). Coordinates are a geocoded street-address point, not parcel-confirmed.
Any MW value is reproduced as source-reported context. Its measurement boundary is not established consistently enough for comparison. Unknown is not zero.
Status history supplied by the source
- 2025-03-24 · source-reported proposed
CEQA Mitigated Negative Declaration filed (SCH# 2025030999).
- 2025-05-22 · source-reported permitted
Hayward Planning Commission unanimously approved Major Site Plan Review / Administrative Use Permit SPR-23-0036; no appeals filed.
- 2026-09-14 · source-reported under construction
The City of Hayward's data center application register now lists STACK SVY03A (application SPR-23-0036, approved 2025-05-22) with a status of "Under construction", a change from the permitted state recorded at approval.
Sources and attribution
These sources are listed for the whole row. Unless a figure links to its own source, the provider does not mark which one gave it, so a figure may not appear in every source.
- CEQAnet Mitigated Negative Declaration filing (SCH# 2025030999) · California State Clearinghouse (CEQAnet)
- STACK SVY03A backup generating system docket (23-SPPE-01) · California Energy Commission
- Data center development applications · City of Hayward
- Who approved Hayward's largest data center? · Tri City Voice
- Hayward data center under public scrutiny as loopholes pile up · OpGov News
- Data Center Development Applications — City of Hayward (STACK SVY03A listed as Under construction) · City of Hayward
Adapted from Compute Atlas by Edward Kubiak, edition 1.34.1, under CC BY 4.0. Upstream ID stack-svy03a-hayward-ca. Filtered to data-center records in the 50 U.S. states; selected fields normalized for search and display; DataCenterData directory IDs added. Some locations in this layer are reported by the provider as derived from OpenStreetMap (© OpenStreetMap contributors, ODbL, https://www.openstreetmap.org/copyright) and Epoch AI (CC BY 4.0).
Compute Atlas 1.34.1 with retained prior rows and publication holds. This is a DataCenterData composite, not an unmodified publisher edition. This row uses the captured source from 1.34.1, source as of 2026-10-14T20:40:52.293Z.
State or local registry record
What a state or local government record says at this same street address. The record is cited, not republished. It does not establish that a data center is operating, its capacity, or its owner or operator unless the record says that role. It is not added to the counts on this page.
Same street address. The government record cites the same street as this record.
STACK SVY03A Data Center Campus
- Publishing agency
- California Energy Commission
- Record type
- energy siting case
- Record identifiers
- 23-SPPE-01
- Named in the record
- STACK Infrastructure
What this record does not establish
- That a permit, certification, tax status, or application means an operating data center.
- Current IT capacity, utility load, or generation capacity.
- Who operates the site. A company named in the record is not the operator unless the record says so.
- Cooling redundancy. Mentioned equipment is not a design rating.
- Whether the record covers one building, a campus, or a suite, beyond the unit label the record itself uses.
That does not mean the row is wrong, and it does not mean no reviewed record exists for the same place. A link is added only when an identifier or source establishes the match.
Recorded information
What this page records, grouped by topic, with the source's units and qualifications. Company-reported values stay labeled as company-reported. Related listings are shown separately.
Licensed directory listing dcd-dir-001358
Licensed directory row.
Provider notes and the source narrative are printed on this page and are not repeated here.
Identity and relationships
- Provider facility type: data center
Provider facility type.
Location and precision
- 26203 Production Avenue, Hayward, CA 94545 · Alameda (Approximate location)
Roles
- Operator: STACK Infrastructure
Operator label as published by the provider; no parent company is inferred.
Lifecycle
- Source-stated status: source-reported under construction
Provider status label; not a DataCenterData finding that the facility is operating.
- Status history: 2025-03-24 · source-reported proposed
Status history supplied by the source.
- Status history: 2025-05-22 · source-reported permitted
Status history supplied by the source.
- Status history: 2026-09-14 · source-reported under construction
Status history supplied by the source.
Area, acreage and buildings
- Land area: 11.3 acres (source-reported; parcel boundary not established)
Power capacity
- Reported capacity: Planned: 67.2 MW (source-reported; boundary not independently verified; MW measure not stated by provider)
Reproduced as the page prints it; not ranked or totaled; unknown is not zero.
- Power source: Grid
Provider label.
- On-site generation: 76.6 MW (source-reported)
On-site figures often describe backup generators rather than primary supply; read the provider energy note.
Permits, incentives, jobs and proceedings
- Announced jobs: 41 permanent · 380 construction
Announced figures; whether they cover one building, a campus or a multi-phase program is not established.
- Community response: Provider label: contested
Compute Atlas characterization, not a DataCenterData assessment.
Sources, dates, limitations and corrections
- Provider update date: 2026-09-29
Provider update date is not a DataCenterData verification date.
Not yet recorded here: Cooling, water, PUE and WUE · Connectivity · Services · Certifications and design ratings · Rack density · Availability · Specification links and contact.
Licensed values: adapted from Compute Atlas by Edward Kubiak under CC BY 4.0. Source-reported and not independently verified.
Update this profile with a public source. The request includes topics needing more information; this does not mean the facility lacks them. Corrections and additions are reviewed before publication.