Cartis diligence evidence schedule
SoftBank Sakai AI Data Center
PRJ-0263 · Site · Sakai, Osaka, Osaka, Japan
Captured 2026-09-06T04:13:18.658Z · Record last updated 2026-08-25
SHA-256: c6631ab8ec1116912131aad19d07ebe4845bf7441b7bd1829800c58424baea13
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Scope and capacity
SoftBank Sakai AI Data Center — Conversion of acquired land and buildings within Sharp's former Sakai LCD plant; OpenAI site role not established by primary evidence. SoftBank Sakai AI Data Center is in Sakai, Osaka, 27, JP and is a data center campus with development status.
Headline: 400 MW Planned / design
Numbers refer to their stated physical boundaries and are not added together. Source dates, claim dates and record updates have different meanings. Missing dates and locators are not inferred.
Claims and exhibit sources
Acquisition Consideration · 100 JPY billion
Source report · SoftBank Sakai AI Data Center (project)
Claim 24930 · Review: Approved · Claim date: Not published
- The SoftBank Group and OpenAI Launch SB OAI Japan
SoftBank Group / OpenAI · Document date: 2025-11-05 · Corroborating
https://group.softbank/en/news/press/20251105 - SoftBank Group Report 2025
SoftBank Group · Document date: 2025-07-28 · Corroborating
https://group.softbank/media/Project/sbg/sbg/pdf/ir/financials/annual_reports/annual-report_fy2025_en.pdf - SoftBank Corp. Integrated Report 2025
SoftBank Corp. · Document date: 2025-07-01 · Primary
https://www.softbank.jp/en/corp/set/data/ir/documents/integrated_reports/pdf/sbkk_integrated_report_2025_en.pdf - SoftBank buys JPY100bn old Sharp plant
Yahoo Finance / TechCrunch · Document date: 2025-03-14 · Corroborating
https://finance.yahoo.com/news/softbank-buys-676m-old-sharp-092445803.html - SoftBank, OpenAI to build AI data centre in Japan, Nikkei reports
Reuters · Document date: 2025-03-13 · Corroborating
https://www.reuters.com/technology/softbank-openai-jointly-run-ai-agents-ex-sharp-lcd-plant-osaka-nikkei-reports-2025-03-13/ - SoftBank to build 150MW AI data center at Sharp Sakai plant
Light Reading · Document date: 2024-06-11 · Corroborating
https://www.lightreading.com/data-centers/softbank-to-build-150mw-ai-data-center-at-sharp-s-sakai-plant - SoftBank to Construct Large-scale AI Data Center at Sharp Sakai Plant
SoftBank Corp. / Sharp · Document date: 2024-06-07 · Corroborating
https://global.sharp/corporate/news/240607-a.html
Site Area · 440,000 square metres
reported rounded · SoftBank Sakai AI Data Center (project)
Claim 24931 · Review: Approved · Claim date: Not published
- SoftBank to Construct Large-scale AI Data Center at Sharp Sakai Plant
SoftBank Corp. / Sharp · Document date: 2024-06-07 · Primary
https://global.sharp/corporate/news/240607-a.html
Power Capacity · 150 MW
Planned / design or future potential · SoftBank Sakai AI Data Center (project)
Claim 24933 · Review: Approved · Claim date: 2024-06-07T00:00:00+00:00
Headline treatment: Separate claim, not added to the headline
- SoftBank to Construct Large-scale AI Data Center at Sharp Sakai Plant
SoftBank Corp. / Sharp · Document date: 2024-06-07 · Primary
https://global.sharp/corporate/news/240607-a.html
Future Power Capacity · 400 MW
Planned / design or future potential · SoftBank Sakai AI Data Center (project)
Claim 24934 · Review: Approved · Claim date: 2024-06-07T00:00:00+00:00
Headline treatment: Selected headline
- SoftBank to Construct Large-scale AI Data Center at Sharp Sakai Plant
SoftBank Corp. / Sharp · Document date: 2024-06-07 · Primary
https://global.sharp/corporate/news/240607-a.html
Inherited Infrastructure · Land, buildings, electric power supply facilities and cooling systems
Source report · SoftBank Sakai AI Data Center (project)
Claim 24938 · Review: Approved · Claim date: Not published
- SoftBank to Construct Large-scale AI Data Center at Sharp Sakai Plant
SoftBank Corp. / Sharp · Document date: 2024-06-07 · Primary
https://global.sharp/corporate/news/240607-a.html
Counterparties and capital
SoftBank Corp. · Developer, Operator · CMP-0706
¥100,000,000,000 · 2025-03-01
SoftBank purchase of relevant Sakai land/buildings; not construction financing or total project cost.
Sharp Corporation (Other) · SoftBank Corp. (Other)
Financing record 68; claim-specific source links appear in the exhibit sources where published.
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