Compute Institute
Ratings for the physical buildout of AI
AirTrunk Osaka Campus (OSK1 + OSK2)

AirTrunk Osaka Campus (OSK1 + OSK2)

Construction
Confirmed

Jurisdiction: Japan

OSK1: 1-chome-9-36 Nagasunishidori, West Osaka (20MW, 16,500 sqm, dedicated 77kV substation; construction from Q1 2024, planned 2026) + OSK2: East Osaka (up to 100MW campus, announced 2025 as AirTrunk's 14th campus) — part of the ~JPY1.2T Japan platform with TOK1/TOK2.

Capacity
GPUs (est.)
Capex
Announced
Target operational

Delivery health score

57.3 /100
57.3/100

Methodology prs-v0.1 · computed · trigger: scheduled

Schedule

55 /100
55/100

Regulatory

70 /100
70/100

Infrastructure

70 /100
70/100

Capital

40 /100
40/100

Why this score — factor breakdown

Each factor below contributed to the current score. Contributions are rubric weights from methodology prs-v0.1; every factor cites the record it is derived from.

Dimension
Factor
Contribution
Cites
Narrative
Capital baseline 40 AirTrunk Osaka Campus (OSK1 + OSK2) No committed capital evidenced on any entity role — announcement-only anchor region (§B.2.4).
Regulatory baseline 70 AirTrunk Osaka Campus (OSK1 + OSK2) No-adverse-evidence regulatory baseline (disclosed config, scoring.prs.baselines).
Infrastructure baseline 70 AirTrunk Osaka Campus (OSK1 + OSK2) No-adverse-evidence infrastructure baseline (disclosed config, scoring.prs.baselines).
Schedule baseline 80 AirTrunk Osaka Campus (OSK1 + OSK2) No-adverse-evidence schedule baseline (disclosed config, scoring.prs.baselines).
Schedule staleness decay -25 AirTrunk Osaka Campus (OSK1 + OSK2) Newest schedule evidence is 2025-12-17 (freshness window 6 months) — score drifts one rubric level toward the stage-default prior of 50 (§B.4: silence is information).

Milestones

No milestones recorded for this project yet.

Constraint observations

No active constraint observations recorded against this project.

Entities & roles

Entity
Role
Ownership
Committed capital
AirTrunk
Developer

Sources & citations

Every substantive field on this record is backed by a canonical claim from a cited source document, graded on the E1 (strongest) – E5 (weakest) evidence ladder.

  1. AirTrunk · Dec 17, 2025 · backs: status

    https://airtrunk.com/airtrunk-to-build-second-osaka-hyperscale-data-centre-to-support-ai-growth/

Signals

Recent ingested source documents linked to this project via extracted claims or triage mentions, newest first.

  1. · AirTrunk · relevance 0.90