Data Center Atlas
AirTrunk TOK1 Tokyo East
Partially operational
Japan · 1 project · Last reported
Summary
TOK1 is AirTrunk's flagship hyperscale campus in the Inzai data center hub east of Tokyo, which AirTrunk bills as the biggest hyperscale campus in Japan measured in megawatts. The 13-hectare campus is scalable to more than 300 MW and already has facilities in service. In August 2024 AirTrunk said a 50 MW third phase was on schedule and topping out; it broke ground on a further 40 MW-plus phase in June 2025, and in March 2026 said it had recently begun building over 100 MW of additional IT load. That month it closed a JPY 191.6 billion green loan to refinance existing TOK1 facilities and fund the next phases.
Source record as of 2026-03-10 · Details and sources
Location
The interactive map needs JavaScript. Display anchor: 35.83230, 140.14530 (Point locator, WGS 84).
View location: OpenStreetMap · Google Maps · Bing aerial · Copernicus Browser
Town or locality reference only; the facility position is not established.
Projects (1)
AirTrunk TOK1 Tokyo East
Partially operational last observed as of · Reported status
Location: Inzai, Chiba Prefecture, JP. AirTrunk's TOK1 page places the campus in Inzai's data center hub without an address; coordinates are the OpenStreetMap Nominatim centroid of Inzai City. AirTrunk
Use: Cloud
Capacity, investment and other figures
| Measure | Value | Scope | As of | Notes | Sources |
|---|---|---|---|---|---|
| Power capacity | more than 300 MW | Planned · Campus · Unspecified | 2026-03-10 | AirTrunk calls this total campus capacity without saying whether it is IT load. | AirTrunk; AirTrunk; AirTrunk; AirTrunk |
| Power capacity | 50 MW | Under construction · Phase · Unspecified · Phase 3 | 2024-08-14 | Topping out expected in August 2024. | AirTrunk |
| Power capacity | more than 40 MW | Under construction · Phase · Unspecified · Phase begun June 2025 | 2025-06-19 | AirTrunk | |
| Power capacity | more than 100 MW | Under construction · Phase · It load · Next phases under construction in 2026 | 2026-03-10 | May overlap with the phase that broke ground in June 2025; AirTrunk does not reconcile the two figures. | AirTrunk |
| Land area | 13 hectares | Reported · Campus | 2026-10 | Undated facility page viewed October 2026. | AirTrunk |
| Floor area | 80,000 sq_m | Planned · Campus | 2026-10 | Data hall area across 102 data halls, per the undated facility page; excludes 9,600 square meters of office and storage space. | AirTrunk |
Companies and organizations
| Name | Role | Notes | Sources |
|---|---|---|---|
| AirTrunk | Developer | AirTrunk; AirTrunk; AirTrunk; AirTrunk | |
| AirTrunk | Operator | AirTrunk; AirTrunk |
Timeline
| Date | Event | Actual or planned | Notes | Sources |
|---|---|---|---|---|
| 2024-08 | Other | Actual | Phase 3 (50 MW) reported on schedule and topping out. | AirTrunk |
| 2025-06 | Other | Actual | Groundbreaking on a 40 MW-plus phase announced 19 June 2025; earlier phases had already been built, so this is not the campus construction start. | AirTrunk |
| 2026-03-10 | Other | Actual | JPY 191.6 billion (about US$1.24 billion) green loan closed to refinance existing TOK1 facilities and fund development of the next phases. | AirTrunk |
Sources for these details
- TOK1 Tokyo East — AirTrunk; publication date not stated
- AirTrunk TOK1 Phase 3 progressing at speed — AirTrunk; 2024-08-14
- AirTrunk breaks ground on 40+MW phase of TOK1, Japan's largest hyperscale data centre campus. — AirTrunk; 2025-06-19
- AirTrunk secures largest financing for a data centre in Japan with US$1.2 billion green loan — AirTrunk; 2026-03-10 · Archived source
- Companies
Source and location review
- Status source
- TOK1 Tokyo East evidence row
AirTrunk · publication date not stated · Company disclosure - Locator
- Locality reference only · Compiled location reference · locality evidence
- Source checks
Not reviewed against imagery not_
reviewed
No imagery review is recorded for this project. Its status rests only on the dated authoritative source. · no independent imagery verificationStatus age at review: 231 days before the data update on 2026-10-27
Location details
- Coordinates
- 35.83230, 140.14530
- Geometry licence
- source-terms-not-recorded
- Use scope
- Locality reference only
- Scope class
- locality
- Authority
- Compiled location reference
- Source entity
- Project
- Method
- imported_reference_point
- Derivation
- imported_reference_point
- Precision scope
- AirTrunk's TOK1 page places the campus in Inzai's data center hub without an address; coordinates are the OpenStreetMap Nominatim centroid of Inzai City.
- Horizontal uncertainty
Not reported
The source record provides no measured horizontal uncertainty; original coordinate precision and note are preserved.
- Geometry evidence
- 4e36cb9c
A locator places the site on the map. It is not a building footprint, a construction extent or a surveyed boundary unless the use scope is an official boundary, and even then it is a parcel or permit boundary.
Evidence
Sources are linked, not redistributed; each keeps its own terms. An archived copy is a lookup for the Wayback Machine capture nearest the retrieval date and may be unavailable or differ from what was reviewed. Each hash states what it covers; imported factual records are not publisher-page captures.
| Title | Publisher | Roles | Published | Retrieved | Licence | Attribution | Content hash (SHA-256) |
|---|---|---|---|---|---|---|---|
| AirTrunk breaks ground on 40+MW phase of TOK1, Japan's largest hyperscale data centre campus. Archived copy | AirTrunk Company disclosure | Imported: Record, Metric: Power Capacity, Milestone: Other, Role: Developer | source-terms-not-recorded | AirTrunk | 64b01f11061b6de2f05d85ac1c73b5662c5be94f770c61cc8d5248c416675317Factual source record; not the publisher page | ||
| AirTrunk secures largest financing for a data centre in Japan with US$1.2 billion green loan Archived copy | AirTrunk Company disclosure | Imported: Record, Imported: Status, Metric: Power Capacity, Milestone: Other, Role: Developer, Operator claim | source-terms-not-recorded | AirTrunk | bb0a2b703bd9534a205a82fd3e42aac7bfcc3436228fc618b233bb85323b0797Factual source record; not the publisher page | ||
| AirTrunk TOK1 Phase 3 progressing at speed Archived copy | AirTrunk Company disclosure | Imported: Record, Metric: Power Capacity, Milestone: Other, Role: Developer | source-terms-not-recorded | AirTrunk | e90326bfc19bbcdb040d9ed65358a8d5c36d5b768259c3b987bde265fe7f8b82Factual source record; not the publisher page | ||
| TOK1 Tokyo East Archived copy | AirTrunk Company disclosure | Imported: Geometry, Imported: Record, Imported: Status, Metric: Floor Area, Metric: Land Area, Metric: Power Capacity, Role: Developer, Operator claim | not stated | source-terms-not-recorded | AirTrunk | 5940e0e83cc052066f6c13eda380c9ed6bffd042046e055d04aaf667d0b0bff5Factual source record; not the publisher page |
Cite this site
Kyars, K. (2026). AirTrunk TOK1 Tokyo East [site vcc-site-d3117bafca6bdcc5007e]. In Data Center Atlas (2026-10-27) [Data set]. https://kiankyars.github.io/datacenter-atlas/sites/vcc-site-d3117bafca6bdcc5007e/
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