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Data center project · Washington County, Oregon

STACK Infrastructure POR03 campus, Hillsboro

Operating · STACK's eight-building, 200 MW campus in Hillsboro, plus a separate small POR01 site whose entitlement revision was filed just before the city's moratorium.

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Status
Operating · as of Oct. 2026
Location
Hillsboro, near PGE's Shute Substation · Washington County
Status note
STACK's campus page lists 72 MW of operating critical capacity, 25 MW with near-term availability and 96 MW of expansion capacity (POR03E/F).
Power
200 MW
STACK's stated total critical capacity for the campus at full build-out.
Floor area
1,600,000 sq ft
Land
55 acres
Developer and team
STACK Infrastructure
Utility
Portland General Electric
Water
STACK says the campus uses closed-loop water cooling with air-cooled chillers.
Incentives
An applicant named SI POR03E filed one of the 17 Hillsboro enterprise zone applications now in court; its tie to STACK is not confirmed, and amounts were not reported.
Evidence
News reports; primary records not yet obtained
Size class
50 MW or more (tracker scope)
Map position approximate, from the reported address or area. Updated Oct. 17, 2026.

Updates, newest first

  1. Oct. 21, 2026 STACK's campus page listed four POR03 buildings of 24 to 25 MW each and a planned 96 MW POR03E/F building. (STACK Infrastructure, Oct. 21, 2026)
  2. Aug. 12, 2026 DCD reported that STACK, hours before the moratorium, had filed a development review to revise entitlements at POR01, a 4 MW site near the POR02 and POR03 campus, which the city listed as in review. (DatacenterDynamics, Aug. 12, 2026)
  3. June 23, 2026 OPB listed an applicant named SI POR03E among the companies whose Hillsboro enterprise zone approvals were challenged in court; whether it is tied to STACK was not stated. (OPB, June 23, 2026)
  4. Oct. 2024 STACK's campus brochure described POR03 as 200 MW on 55 acres, master-planned for eight data centers totaling 1.6 million square feet. (STACK Infrastructure, Oct. 2024)

Conflicts and open questions

  • The brochure and campus page are the operator's own marketing material, not public records.
  • An enterprise zone applicant named SI POR03E is listed in the court challenge, and STACK's campus page lists a planned POR03E/F building; no source reviewed states that SI POR03E is a STACK entity, so the tie is not confirmed.

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