Operators

STACK Infrastructure

Ownership / jurisdiction: STACK Infrastructure (Blue Owl Capital, USA, via IPI Partners) — same entity as OSL04 (see that entry for the full ownership chain and registry evidence).

Facilities

• STACK Infrastructure — OSL03A, Fetsund

  Norway · Operational

  ~10 MW, 4,200 m² IT space — first building on the campus (third-party facility profile; not independently re-confirmed on stackinfra.com's current aggregate figure of 40 MW across the whole OSL03+OSL04 portfolio)

• STACK Infrastructure — OSL03B, Fetsund

  Norway · Operational

  Capacity not separately published — part of the OSL03 campus aggregate (see OSL03A note on the 40 MW/2-campus cross-check)

• STACK Infrastructure — OSL03C, Fetsund

  Norway · Operational

  ~3 MW — opened autumn 2020, 'HYPERSTACK' design, ISO Class 8 fresh-air AHU (third-party facility profile)

• STACK Infrastructure — OSL03D, Fetsund

  Norway · Operational

  ~6 MW, ~1,800 m² white space — newest building on the campus (third-party facility profile)

• STACK Infrastructure — OSL04 Holtskogen, Tomter

  Norway · Operational + expandable

  18 (campus, four buildings)

• STACK Infrastructure — COP02, Copenhagen

  Denmark · Campus development — not yet at end-state capacity

  Designed for 72 MW end-state critical capacity across two buildings (48 MW + 24 MW), 25 acres. Current built/operational capacity not published.