SK–AWS Ulsan AI Data Center

Ulsan, South Korea · 31Under construction

Planned / design: 1,000 MW
Updated: Oct 28, 2026

Construction began August 29, 2025. The first 41 MW is targeted for November 2027 and the 103 MW facility for February 2029. A future 1 GW expansion remains a vision rather than an approved phase.

Capacity

Initial stage capacity

Planned / design or future potential

41 MW

Source

Planned cumulative capacity

Planned / design or future potential

103 MW

Source

Future potential capacity

Planned / design or future potential

1,000 MW

Source

Reported GPU capacity

Actual

60,000 GPUs

Compute quantity or benchmark; not power capacity

Source

Operating IT capacity: Not established in published records

A missing figure does not mean zero. Planned, utility and generation figures are not operating IT capacity.

Development

Initial 41 MW stageUnder construction

First operating stage; source does not establish whether 41 MW is IT load or total facility power.

Expansion to 103 MWPlanned

The 103-MW figure is cumulative design capacity for the expanded campus.

Milestones (4)

SK–AWS Ulsan investment announced

Jun 20, 2025 · Recorded actual event

Completed · Event type not stated

Source not linked

Physical campus broke ground

Aug 29, 2025 · Recorded actual event

Completed · Construction started

Source not linked

Initial 41 MW stage targeted to begin operations

Nov 2027 · Forecast / planned record

Forecast · Event type not stated

Source not linked

Cumulative 103 MW facility targeted for completion

Feb 2029 · Forecast / planned record

Forecast · Event type not stated

Source not linked

Participants

SK Broadband

Operator

Sources by role

Operator (1)

SK Group and AWS team up to build cloud infrastructure · Jun 22, 2025 · Primary

SK Group

Developer

Sources by role

Developer (1)

SK Group and AWS team up to build cloud infrastructure · Jun 22, 2025 · Primary

SK Telecom

Developer

Sources by role

Developer (1)

SK Group and AWS break ground for data center in Ulsan · Sep 1, 2025 · Corroborating

Developer (1)

SK Group and AWS team up to build cloud infrastructure · Jun 22, 2025 · Primary

Other participants (5)

Korea Ministry of Science and ICT

Government authority

Sources by role

Government authority (1)

South Korea says SK and Amazon to invest $5 billion in country's biggest data centre · Jun 20, 2025 · Primary

SK Ecoplant

Contractor

Sources by role

Contractor (1)

SK Group and AWS break ground for data center in Ulsan · Sep 1, 2025 · Primary

SK Gas

Supplier

Sources by role

Supplier (1)

SK Group and AWS break ground for data center in Ulsan · Sep 1, 2025 · Primary

Supplier (1)

SK Group breaks ground on AI-only data center in Ulsan · Aug 29, 2025 · Corroborating

SK Multi Utility

Supplier

Sources by role

Supplier (1)

SK Group and AWS break ground for data center in Ulsan · Sep 1, 2025 · Primary

Ulsan Metropolitan City

Government authority

Sources by role

Government authority (1)

SK Group and AWS break ground for data center in Ulsan · Sep 1, 2025 · Primary

Capital & incentives

Capital claims

Reported joint investment

Actual

7 KRW trillion

Source

Reported aws investment component

Actual

$4 billion

Source

Site & development

Planned completion target

Actual

2029-02

Source

Technical specifications

Cooling design

Actual

Hybrid air and liquid cooling

Source

Additional project facts

Project status

Actual

Under construction

Source

Groundbreaking date

Actual

2025-08-29

Source

Initial operations target

Actual

2027-11

Source

Infrastructure & permits

Technical details (2)

Utility service

Planned or represented

SK Gas LNG is expected to feed the site power chain.

Electric grid

Planned or represented

SK Multi Utility is expected to produce energy for the site; contract and capacity are not public.

Public-source research. Plans may change. See Evidence for sources and qualifications.

Related projects (1)

AWS Ulsan AI Zone

Status under review · Ulsan, South Korea

Same locality: Ulsan

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