South Korea / Facility
Seoul colocation facility developed and operated by the STT GDC–Hyosung joint venture. Commercial operations began in June 2026, with up to 30 MW disclosed IT capacity; commissioned or occupied load is not disclosed.
PeeringDB facility geocode associated with the operator-confirmed Gasan-dong address; building footprint and Google Maps marker were not independently corroborated.. Coordinate precision: approximate. Street-map detail does not increase the accuracy of the sourced point.
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Statements retain their dates, definitions and development scope. Do not add these rows together.
| Claim / measurement | Scope and status | As of | Evidence and accounting |
|---|---|---|---|
| 30 MW IT load | STT Seoul 1 maximum supported IT capacity Operational · cumulative | 2026-06-16 | Reported claim ↗ Excluded from capacity totals. Announcement date; source says up to 30 MW. This is an upper design/support limit, not measured demand or proof all capacity is commissioned. |
STT GDC and Hyosung Heavy Industries established the joint venture; opening announcement reports respective interests of 60% and 40%.
Supporting source ↗Earlier factsheet target; does not establish actual commencement of service.
Supporting source ↗Junglim lists completion in 2025, distinct from commercial opening in 2026.
Supporting source ↗Uptime Institute design-document certification reported; June commercial launch remained targeted at this date.
Supporting source ↗Operator's June 16 announcement reports commercial commencement during June.
Supporting source ↗KKR-led consortium with Singtel acquired STTGDC; local property ownership implications are unestablished.
Supporting source ↗Different from operator's 39,594.7 m²; measurement basis unresolved.
Source ↗Architect project description.
Source ↗Client is not treated as verified current legal owner.
Source ↗Official Seoul page; total rack count absent.
Source ↗Voltage and redundancy do not establish grid MW capacity.
Source ↗Design specifications.
Source ↗July 2026 factsheet; May announcement instead describes dual telecom entry points. Named carriers unconfirmed.
Source ↗Announced May 2026; constructed-facility certification not established.
Source ↗July 2026 factsheet still says pre-certified; current registry status unresolved.
Source ↗Initial certification August 13, 2024; displayed validity ended August 12, 2025. Renewal unknown.
Source ↗Source attribution does not imply independent verification or permission to reuse images.
Published 2026-06-16 · Retrieved 2026-10-07
Announces opening in Gasan-dong, Seoul, June commercial operations, up to 30 MW IT load and a 60% STT GDC/40% Hyosung development and operating joint venture.
Published Date unavailable · Retrieved 2026-10-07
Current download from the operator's July 16, 2026 resource page; supplies parcel address, building areas, IT load and infrastructure specifications. Certification qualifications remain pre-certified or targeted.
Published 2026-05-19 · Retrieved 2026-10-07
Reports Tier III design-document certification and June 2026 operating target; describes carrier-neutral connectivity and resilient infrastructure.
Published Date unavailable · Retrieved 2026-10-07
TIA Rated-3 design certificate identifies 345-26 Gasan-dong, Seoul, Republic of Korea. Initial certification August 13, 2024; stated validity ended August 12, 2025.
Published Date unavailable · Retrieved 2026-10-07
Lists the same parcel address, STT GDC organization and geocode 37.473354, 126.882697; record updated September 26, 2025.
Published 2026-06-17 · Retrieved 2026-10-07
Joint-venture partner identifies the opened Seoul property as a hyperscale facility supporting up to 30 MW IT capacity.
Published Date unavailable · Retrieved 2026-10-07
Architect identifies completed project, 2025 completion, Gasan Landmark Datacenter PFV as commissioning client, lease-to-own financing, site and building areas, and B2/10F scale.
Published Date unavailable · Retrieved 2026-10-07
Official Seoul facility page identifies Gasan-dong locality, 30 MW IT load and up to 12 kW per rack without supplemental cooling.
Published 2026-09-02 · Retrieved 2026-10-07
Reports completion of acquisition of the global operator by the KKR-led consortium with Singtel; does not establish local property title or changed Korean joint-venture interests.
Published Date unavailable · Retrieved 2026-10-07
Describes hyperscale and retail colocation services at the same address and distinguishes nearby KT, K-Square, SK Broadband and DCI properties.
Published Date unavailable · Retrieved 2026-10-07
Earlier factsheet states an RFS target of Q2 2025; publication date is not established from its URL or conflicting document title.
Name: ST Telemedia Global Data Centres Opens STT Seoul 1, Extending Its Platform into South Korea; Certificate of Conformance: Hyosung STT GDC Inc., STT Seoul 1
Kind: ST Telemedia Global Data Centres Opens STT Seoul 1, Extending Its Platform into South Korea; STT Seoul 1 (STT Global Data Center) — Junglim Architecture
Country: ST Telemedia Global Data Centres Opens STT Seoul 1, Extending Its Platform into South Korea; Certificate of Conformance: Hyosung STT GDC Inc., STT Seoul 1
Region: STT Seoul 1 Factsheet, July 2026 edition; STT Seoul 1 (STT Global Data Center) — Junglim Architecture
City: ST Telemedia Global Data Centres Opens STT Seoul 1, Extending Its Platform into South Korea; STT Seoul 1 Factsheet, July 2026 edition
Metro: ST Telemedia Global Data Centres Opens STT Seoul 1, Extending Its Platform into South Korea; Chairman Cho Hyun-joon Continues Power Equipment Success Story with AI Data Centers
Address: STT Seoul 1 Factsheet, July 2026 edition; Certificate of Conformance: Hyosung STT GDC Inc., STT Seoul 1
Operator: ST Telemedia Global Data Centres Opens STT Seoul 1, Extending Its Platform into South Korea; Certificate of Conformance: Hyosung STT GDC Inc., STT Seoul 1; Chairman Cho Hyun-joon Continues Power Equipment Success Story with AI Data Centers
Business Model: STT Seoul 1 Data Center — Data Center Map
Scale: Chairman Cho Hyun-joon Continues Power Equipment Success Story with AI Data Centers
Statuses: ST Telemedia Global Data Centres Opens STT Seoul 1, Extending Its Platform into South Korea; Chairman Cho Hyun-joon Continues Power Equipment Success Story with AI Data Centers
Summary: ST Telemedia Global Data Centres Opens STT Seoul 1, Extending Its Platform into South Korea; STT Seoul 1 Data Center — Data Center Map
Location: STT Seoul 1 — PeeringDB; STT Seoul 1 Factsheet, July 2026 edition
Stable identifier: 91b8c714-5cfa-4a53-b80f-0ee53b896cad