How big is SoftBank Tomakomai AI Data Center (Japan)?

SoftBank Tomakomai AI Data Center (Japan) has 300 MW of tracked capacity, located in Tomakomai, Hokkaido, Japan. It ranks #95 globally by selected capacity among 294 tracked records.

What is the status of SoftBank Tomakomai AI Data Center (Japan)?

SoftBank Tomakomai AI Data Center (Japan) is currently under construction. Known timeline milestones: Earliest market signal 2026.

Who operates SoftBank Tomakomai AI Data Center (Japan)?

SoftBank Tomakomai AI Data Center (Japan) is operated by SoftBank Corp. and NVIDIA. Structured intelligence reports are available for SoftBank Corp. Operator Report and NVIDIA Operator Report and Japan Country Report.

What energy source does SoftBank Tomakomai AI Data Center (Japan) use?

SoftBank Tomakomai AI Data Center (Japan) is powered by renewable energy and is focused on sovereign ai workloads. This is backed by 2 cited sources.

AI data center dossier

SoftBank Tomakomai AI Data Center (Japan)

Tomakomai, Hokkaido, Japan/datacenters/softbank-tomakomai-ai-data-center-japan.html

Under Construction Renewable 300 MW Sovereign AI

Country

Japan

Operator

SoftBank Corp., NVIDIA

Energy

Renewable

Tracked capacity

300 MW

Evidence profile

Readiness reflects whether the record has citations, narrative context, structured power data, coordinates, and at least one dated milestone.

Readiness

100%

Sources attachedVerified

2 citations linked

CoordinatesPublished

42.636, 141.603

Capacity scopeUnscoped

Selected MW is present, but its scope has not been classified yet

Timeline evidencePartial

1 dated field available

Machine-readable outputsPublished

HTML, JSON, and GeoJSON all available

Machine-readable outputs

Canonical record surfaces for audit, programmatic use, and direct citation.

Canonical HTML

/datacenters/softbank-tomakomai-ai-data-center-japan.html

JSON record

/datacenters/softbank-tomakomai-ai-data-center-japan/index.json

GeoJSON geometry

/datacenters/softbank-tomakomai-ai-data-center-japan/index.geojson

Record Notes

SoftBank is developing what is slated to be Japan’s largest AI data center in Tomakomai, Hokkaido. Announced in partnership with NVIDIA in November 2024, the facility will be the first in the world to receive NVIDIA DGX B200 systems (Blackwell architecture), with plans to scale to a liquid-cooled Grace Blackwell (GB200 NVL72) supercomputer. The site spans 700,000 m² and leverages Hokkaido’s cool climate and local renewable energy to minimize power consumption. A key innovation at the site is the world’s first successful pilot of AI-RAN (AI Radio Access Network), which allows 5G base stations to run AI workloads simultaneously. The project is part of a national strategy to provide Japan with sovereign compute resources for generative AI development.

Taxonomy Links

SoftBank Corp.

operators

NVIDIA

operators

Japan

countries

Under Construction

Renewable

100-500 MW

Sovereign AI

Asia

East Asia

2026

Analyst Flags

Selected capacity is not classified by scope yet.

Timeline Signals

Earliest market signal2026

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Intelligence Reports

Structured analysis covering this facility's operator and market context.

OperatorSoftBank Corp. Operator Report$29 — PDF + JSON/CSV OperatorNVIDIA Operator Report$29 — PDF + JSON/CSV CountryJapan Country Report$29 — PDF + JSON/CSV

Frequently asked questions

How big is SoftBank Tomakomai AI Data Center (Japan)?: SoftBank Tomakomai AI Data Center (Japan) has 300 MW of tracked capacity, located in Tomakomai, Hokkaido, Japan. It ranks #95 globally by selected capacity among 294 tracked records.
What is the status of SoftBank Tomakomai AI Data Center (Japan)?: SoftBank Tomakomai AI Data Center (Japan) is currently under construction. Known timeline milestones: Earliest market signal 2026.
Who operates SoftBank Tomakomai AI Data Center (Japan)?: SoftBank Tomakomai AI Data Center (Japan) is operated by SoftBank Corp. and NVIDIA. Structured intelligence reports are available for SoftBank Corp. Operator Report and NVIDIA Operator Report and Japan Country Report.
What energy source does SoftBank Tomakomai AI Data Center (Japan) use?: SoftBank Tomakomai AI Data Center (Japan) is powered by renewable energy and is focused on sovereign ai workloads. This is backed by 2 cited sources.