A hyperscale campus in Inzai serving the Tokyo market. Operating phases coexist with later development announcements and an advertised 300+ MW build-out. Historical phase claims overlap or lack explicit measurement definitions; current operational IT capacity is unresolved.
Last researched 2026-09-11Last verified Not independently verifiedPublished revision 3
Site / building photo
TOK1 building exterior from the operator’s current location-page gallery.
Published date unknown · Captured date unknown · Checked 2026-09-11
Preferred clear property view from the operator gallery. Capture and publication dates are unknown; the dated construction photo is retained below.
Operator-hosted copyrighted asset; no open reuse license found in reviewed source. Attribution retained; public reuse rights unconfirmed. Upload path is not proof of capture/publication date.
Site / building photo
TOK1 Phase 3 construction, published with the operator’s topping-out update on 14 August 2024.
Published 2024-08-14 · Captured date unknown · Checked 2026-09-11
Latest dated actual site/building image identified among checked operator releases. 2025 release image shows a ceremony; 2026 release image is a rendering.
Operator-hosted copyrighted asset; no open reuse license found in reviewed source. Attribution retained; public reuse rights unconfirmed. Publication date established; actual capture date not disclosed. Historical construction image does not establish current construction status.
Site profile
Operator
AirTrunk
Ownership
AirTrunk corporate acquisition by a Blackstone-led consortium with CPP Investments announced complete in December 2024; direct property title not established.
Business model / scale
Colocation / Hyperscale
Region / metro
Chiba Prefecture / Tokyo / Inzai
City / locality
Inzai
Address
Makinodai 2-chome, Inzai, Chiba, Japan; TOK1-B: 2-1-2; TOK1-D: part of 2-1-1
Location
Makinodai 2-chome campus block; directory pin corroborated by registered building addresses, not a surveyed building point Precision: block · 35.8167, 140.16001 View location on map →
Parent
Not assigned
Location detail
Makinodai 2-chome campus block; directory pin corroborated by registered building addresses, not a surveyed building point. Coordinate precision: block. Street-map detail does not increase the accuracy of the sourced point.
Makinodai 2-chome, Inzai, Chiba, Japan; TOK1-B: 2-1-2; TOK1-D: part of 2-1-1
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Capacity evidence
Statements retain their dates, definitions and development scope. Do not add these rows together.
Eligible for compatible measurement statistics after overlap checks. Use once as a dated lower-bound claim; do not add earlier phase figures. Current completion requires recheck.
Development timeline
2021-11-30 · actual · opening
Initial phases opened
More than 60 MW disclosed, with further campus build-out planned.
Campus specifications: 300+ MW, multiple buildings, 80,000 square meters of data-hall area and design PUE 1.15. Full operational capacity is not established.
Register as of March 31, 2025, Inzai section, TOK1-B / TOK1-D rows: Makinodai 2-1-2 and part of 2-1-1. Regulatory category 30 is not power capacity. This establishes street-block addresses, not surveyed coordinates.
TOK1 Phase 3 construction, published with the operator’s topping-out update on 14 August 2024. Original image: https://airtrunk.com/wp-content/uploads/2024/08/TOK1-Phase-3-1024x573.png
Clear street-level exterior showing the TOK1 property. Visually checked as a photograph. Capture and publication dates are undisclosed. Original image: https://airtrunk.com/wp-content/uploads/2020/09/No.4-scaled.jpg
