DEPLOY

Data center campus

SoftBank/OpenAI Sakai AI Data Center (former Sharp LCD plant)

SoftBank/OpenAI Sakai AI Data Center is an AI data center campus developed by SoftBank Group in Osaka, Sakai. 0.15 GW of capacity has been announced; none is energized yet. The gap is what this page tracks: what is claimed versus what is actually built, each figure dated and sourced.

Under construction · SoftBank Group · Brownfield · other · Sakai, Osaka, Japan

Track SoftBank/OpenAI Sakai AI Data Center (former Sharp LCD plant)

Capacity: announced vs energized

Contracted
not recorded
Under construction
not recorded

Announced-to-energized gap: 0.15 GW. Every figure below is a single dated, sourced claim. Current best per series resolves by evidence tier, then date. See the methodology.

83rd-largest announced of 97 tracked campuses40th by energized capacity18th percentile announced-to-energized gap≈ 122,000 homes of power at full announced capacity (basis)

Promised online: 2025. 9 months past the claimed date, with no energized capacity on record. Claimed by SoftBank (source).

SoftBank/OpenAI Sakai AI Data Center (former Sharp LCD plant) capacity claims
Source
Announced0.15 GW2025-03-14reportedjournalist report
Announced0.25 GW2025-03-14claimedjournalist report
Announced0.40 GW2024-06-07reportedcompany filing
Energized0 GW2025-03-14reportedjournalist report

Key facts

under construction

Lifecycle

0.15 GW

Announced

0 GW

Energized

SoftBank Group

Developer

Japan

Location

other

Grid

brownfield

Land

0.15 GW

Announced-to-energized gap

On the data center map

Every tracked data center is on this map, centered on SoftBank/OpenAI Sakai AI Data Center. Pan or zoom out to see how close rivals are building.

Approximate pin. We hold a city-level coordinate for this campus, not a verified site coordinate, so the marker shows the city rather than the parcel. The satellite strip and building outlines stay off until the site coordinate is sourced.

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The story of SoftBank/OpenAI Sakai AI Data Center (former Sharp LCD plant)
Announced capex
$676M
Derived
Cost per MW
$5M/MW

Every figure is one row in the ledger below with its source. Derived rows are pure arithmetic on the rows above (not new claims). Absent lines mean the fact isn't on record yet.

The deal

offtaker
OpenAI · Partner via SB OpenAI Japan JV; Cristal Intelligence workloads
utility
Sharp Corporation · Seller of the former Sakai LCD factory (brownfield)
developer
SoftBank Group · Purchaser and operator of the site
operator
SoftBank Corp. · SoftBank Corp. (KK) constructing/operating the Sakai data center.
operator
SB OpenAI Japan · 50:50 JV of OpenAI and SoftBank promoting 'Cristal Intelligence'; anchor use of the Sakai capacity.

Power

Power source
grid
Grid operator
other
Interconnection

Why here

SoftBank/OpenAI Sakai AI Data Center sits on brownfield in Osaka, Sakai. It connects to the other grid, draws on grid power. This siting summary is composed from the record's held fields, not speculation; see methodology.

Financial structure

Purchase of former Sharp Sakai plant
$676M. Property acquisition (100bn yen) journalist report
Estimated full-scale investment (Nikkei calc, ~100k GPUs)
$6.7B. Nikkei estimate; not committed/confirmed journalist report
Sharp Sakai plant acquisition
$676M. ~100 billion yen paid by SoftBank for the former Sharp LCD plant/land converted to the AI data center. journalist report

Regulatory paper trail

The filings and rules on record for this site and its jurisdiction, most recent first. Each is a sourced, dated artifact you can follow to the primary document.

Timeline

  2. Aug 2026
    party added
    operator: SB OpenAI Japan
  3. Sep 2026
    Current: Under construction

Sources

7cc3015d-47e3-41e5-b9f1-3f120ead46ef · Tracked with DEPLOY's verified-vs-claimed methodology. Every term is defined in the glossary. Announced numbers are claims, not built capacity.

Head-to-head

SoftBank/OpenAI Sakai AI Data Center vs Stargate Abilene →SoftBank/OpenAI Sakai AI Data Center vs Stargate Lordstown →SoftBank/OpenAI Sakai AI Data Center vs Stargate Milam County →SoftBank/OpenAI Sakai AI Data Center vs SoftBank Hokkaido Tomakomai AI Data Center →

Common questions

What is SoftBank/OpenAI Sakai AI Data Center (former Sharp LCD plant)?
SoftBank/OpenAI Sakai AI Data Center (former Sharp LCD plant) is an AI data center campus tracked on the DEPLOY registry, located in Sakai. DEPLOY records its capacity as a dated, sourced ledger: announced gigawatts versus actually energized gigawatts, never a press-release total.
How much power will SoftBank/OpenAI Sakai AI Data Center (former Sharp LCD plant) use?
SoftBank/OpenAI Sakai AI Data Center (former Sharp LCD plant) has 0.15 GW of announced capacity on the DEPLOY registry, of which 0 GW is recorded as energized, an announced-to-energized gap of 0.15 GW. Each figure is individually dated and sourced.
Who is building SoftBank/OpenAI Sakai AI Data Center (former Sharp LCD plant)?
SoftBank Group is recorded as a party to SoftBank/OpenAI Sakai AI Data Center (former Sharp LCD plant) on the DEPLOY registry. The full party list, with each role, is on the record.
Is SoftBank/OpenAI Sakai AI Data Center (former Sharp LCD plant) operating yet?
As of the most recent verification on the DEPLOY registry, SoftBank/OpenAI Sakai AI Data Center (former Sharp LCD plant) is under construction. DEPLOY tracks the lifecycle from announced through energized, so the current state reflects sourced evidence, not the original announcement.
How verified is the data on SoftBank/OpenAI Sakai AI Data Center (former Sharp LCD plant)?
A human editor has reviewed this record for the indexed registry. Every capacity figure is an append-only, dated claim resolved to the highest-evidence tier; superseded claims are kept but excluded from the current view.

Deploy Watch

Track SoftBank/OpenAI Sakai AI Data Center (former Sharp LCD plant) on Deploy.

We notify you when energized capacity, lifecycle state, or a new dated capacity claim changes against primary-source evidence, not when the developer issues a press release.

Cite this page

DEPLOY. (2026). SoftBank/OpenAI Sakai AI Data Center (former Sharp LCD plant): AI data center campus record. Retrieved September 27, 2026, from https://registry.deploy.report/datacenters/softbank-openai-sakai-osaka

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