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Cartis diligence evidence schedule

SK–AWS Ulsan AI Data Center

PRJ-0271 · Site · Ulsan, South Korea

Record last updated Oct 28, 2026

Scope and capacity

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.

Headline: 1,000 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.

Project status · Under construction

Actual · SK–AWS Ulsan AI Data Center (Project)

Claim 26101 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. SK Telecom pursues 15GW AI data center buildout

    SK Telecom · Document date: Jul 5, 2026 · Corroborating

    Source reference: SRC-1467 · Company announcement · Recorded authority: Party primary

    Source URL

    https://news.sktelecom.com/en/3155

  2. SK Group and AWS break ground for data center in Ulsan

    Data Center Dynamics · Document date: Sep 1, 2025 · Primary

    Source reference: SRC-1465 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/sk-group-and-aws-break-ground-for-data-center-in-ulsan-korea/

  3. SK Group breaks ground on AI-only data center in Ulsan

    Korea JoongAng Daily · Document date: Aug 29, 2025 · Corroborating

    Source reference: SRC-1466 · News report · Recorded authority: Secondary

    Source URL

    https://www.koreajoongangdaily.com/business/sk-group-breaks-ground-on-ai-only-data-center-in-ulsan/12451117

  4. SK Group and AWS team up to build cloud infrastructure

    SK Group · Document date: Jun 22, 2025 · Corroborating

    Source reference: SRC-1462 · Company announcement · Recorded authority: Party primary

    Source URL

    https://eng.sk.com/news/sk-group-and-aws-team-up-to-build-cloud-computing-infrastructure-to-support-ai-innovation

  5. South Korea says SK and Amazon to invest $5 billion in country's biggest data centre

    Reuters · Document date: Jun 20, 2025 · Corroborating

    Source reference: SRC-1463 · News report · Recorded authority: Secondary

    Source URL

    https://www.reuters.com/business/retail-consumer/south-korea-says-sk-amazon-invest-5-bln-countrys-biggest-data-centre-2025-06-20/

  6. SK Group and AWS to build AI data center in Ulsan

    Data Center Dynamics · Document date: Jun 16, 2025 · Corroborating

    Source reference: SRC-1464 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/sk-group-and-aws-to-build-ai-data-center-in-ulsan-south-korea/

Groundbreaking date · 2025-08-29

Actual · SK–AWS Ulsan AI Data Center (Project)

Claim 26102 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. SK Group and AWS break ground for data center in Ulsan

    Data Center Dynamics · Document date: Sep 1, 2025 · Primary

    Source reference: SRC-1465 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/sk-group-and-aws-break-ground-for-data-center-in-ulsan-korea/

  2. SK Group breaks ground on AI-only data center in Ulsan

    Korea JoongAng Daily · Document date: Aug 29, 2025 · Corroborating

    Source reference: SRC-1466 · News report · Recorded authority: Secondary

    Source URL

    https://www.koreajoongangdaily.com/business/sk-group-breaks-ground-on-ai-only-data-center-in-ulsan/12451117

Initial stage capacity · 41 MW

Planned / design or future potential · SK–AWS Ulsan AI Data Center (Project)

Claim 26103 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

Headline treatment: Separate claim, not added to the headline

  1. SK Group and AWS break ground for data center in Ulsan

    Data Center Dynamics · Document date: Sep 1, 2025 · Corroborating

    Source reference: SRC-1465 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/sk-group-and-aws-break-ground-for-data-center-in-ulsan-korea/

  2. SK Group and AWS to build AI data center in Ulsan

    Data Center Dynamics · Document date: Jun 16, 2025 · Primary

    Source reference: SRC-1464 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/sk-group-and-aws-to-build-ai-data-center-in-ulsan-south-korea/

Planned cumulative capacity · 103 MW

Planned / design or future potential · SK–AWS Ulsan AI Data Center (Project)

Claim 26104 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

Headline treatment: Separate claim, not added to the headline

  1. SK Group and AWS break ground for data center in Ulsan

    Data Center Dynamics · Document date: Sep 1, 2025 · Corroborating

    Source reference: SRC-1465 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/sk-group-and-aws-break-ground-for-data-center-in-ulsan-korea/

  2. SK Group and AWS to build AI data center in Ulsan

    Data Center Dynamics · Document date: Jun 16, 2025 · Primary

    Source reference: SRC-1464 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/sk-group-and-aws-to-build-ai-data-center-in-ulsan-south-korea/

Initial operations target · 2027-11

Actual · SK–AWS Ulsan AI Data Center (Project)

Claim 26105 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. SK Group and AWS break ground for data center in Ulsan

    Data Center Dynamics · Document date: Sep 1, 2025 · Corroborating

    Source reference: SRC-1465 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/sk-group-and-aws-break-ground-for-data-center-in-ulsan-korea/

  2. SK Group and AWS to build AI data center in Ulsan

    Data Center Dynamics · Document date: Jun 16, 2025 · Primary

    Source reference: SRC-1464 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/sk-group-and-aws-to-build-ai-data-center-in-ulsan-south-korea/

Planned completion target · 2029-02

Actual · SK–AWS Ulsan AI Data Center (Project)

Claim 26106 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. SK Group and AWS break ground for data center in Ulsan

    Data Center Dynamics · Document date: Sep 1, 2025 · Corroborating

    Source reference: SRC-1465 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/sk-group-and-aws-break-ground-for-data-center-in-ulsan-korea/

  2. SK Group and AWS to build AI data center in Ulsan

    Data Center Dynamics · Document date: Jun 16, 2025 · Primary

    Source reference: SRC-1464 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/sk-group-and-aws-to-build-ai-data-center-in-ulsan-south-korea/

Future potential capacity · 1,000 MW

Planned / design or future potential · SK–AWS Ulsan AI Data Center (Project)

Claim 26107 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

Headline treatment: Selected headline

  1. SK Telecom pursues 15GW AI data center buildout

    SK Telecom · Document date: Jul 5, 2026 · Corroborating

    Source reference: SRC-1467 · Company announcement · Recorded authority: Party primary

    Source URL

    https://news.sktelecom.com/en/3155

  2. South Korea says SK and Amazon to invest $5 billion in country's biggest data centre

    Reuters · Document date: Jun 20, 2025 · Primary

    Source reference: SRC-1463 · News report · Recorded authority: Secondary

    Source URL

    https://www.reuters.com/business/retail-consumer/south-korea-says-sk-amazon-invest-5-bln-countrys-biggest-data-centre-2025-06-20/

Reported joint investment · 7 KRW trillion

Actual · SK–AWS Ulsan AI Data Center (Project)

Claim 26108 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. South Korea says SK and Amazon to invest $5 billion in country's biggest data centre

    Reuters · Document date: Jun 20, 2025 · Primary

    Source reference: SRC-1463 · News report · Recorded authority: Secondary

    Source URL

    https://www.reuters.com/business/retail-consumer/south-korea-says-sk-amazon-invest-5-bln-countrys-biggest-data-centre-2025-06-20/

Reported aws investment component · $4 billion

Actual · SK–AWS Ulsan AI Data Center (Project)

Claim 26109 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. South Korea says SK and Amazon to invest $5 billion in country's biggest data centre

    Reuters · Document date: Jun 20, 2025 · Primary

    Source reference: SRC-1463 · News report · Recorded authority: Secondary

    Source URL

    https://www.reuters.com/business/retail-consumer/south-korea-says-sk-amazon-invest-5-bln-countrys-biggest-data-centre-2025-06-20/

Reported GPU capacity · 60,000 GPUs

Actual · SK–AWS Ulsan AI Data Center (Project)

Claim 26110 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. SK Group and AWS to build AI data center in Ulsan

    Data Center Dynamics · Document date: Jun 16, 2025 · Primary

    Source reference: SRC-1464 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/sk-group-and-aws-to-build-ai-data-center-in-ulsan-south-korea/

Cooling design · Hybrid air and liquid cooling

Actual · SK–AWS Ulsan AI Data Center (Project)

Claim 26111 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. SK Group and AWS break ground for data center in Ulsan

    Data Center Dynamics · Document date: Sep 1, 2025 · Primary

    Source reference: SRC-1465 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/sk-group-and-aws-break-ground-for-data-center-in-ulsan-korea/

Counterparties and capital

Korea Ministry of Science and ICT · Government authority · CMP-0739

SK Broadband · Operator · CMP-0731

SK Ecoplant · Contractor · CMP-0732

SK Gas · Supplier · CMP-0733

SK Group · Developer · CMP-0729

SK Multi Utility · Supplier · CMP-0734

SK Telecom · Developer · CMP-0730

Ulsan Metropolitan City · Government authority · CMP-0738

This schedule captures public Cartis research. It is not a title, lien or legal-opinion report. Document page/section locators and claim review timestamps are included only when published; this version has no separate locator or claim-review-time feed.