STT GDC launches data center in Seoul, South Korea

APAC data center firm ST Telemedia Global Data Centres (STT GDC) has launched a data center in Seoul, South Korea.

The company announced the launch of STT Seoul 1 this week, marking its entry into Korea.

Located in Gasan-dong, Geumcheon-gu, STT Seoul 1 comprises approximately 40,000 square meters (430,556 sq ft) of gross floor area and supports up to 30MW of IT load, with full commercial operations beginning in June 2026.

First announced in 2021, the facility was developed and will be operated through a joint venture between STT GDC (60 percent) and Hyosung Heavy Industries (40 percent). Plans for a second Seoul facility were announced in 2022.

Featuring dual 22.9kV power feeds with a redundant configuration, the facility is designed to support hyperscale and enterprise deployments, including high-density workloads. The facility has received Tier III certification from Uptime.

“AI infrastructure demand is increasingly concentrating in markets where digital capability, power availability, and customer requirements come together,” said Charles Chulhoy Huh, country head, ST Telemedia Global Data Centres (Korea).

“STT Seoul 1 establishes an important foundation for STT GDC’s presence in Korea, extending a globally consistent platform into a key Northeast Asian market, where customers are scaling increasingly advanced workloads and require infrastructure that is resilient, efficient, and built for long-term growth.”

Founded in 1962, Hyosung Heavy Industries Corporation specializes in power transmission and distribution solutions, transformers, construction, and renewable energy. It is a subsidiary of Hyosung Group.

Hyosung group chairman Hyun-Joon Cho added: “Over a decade ago, we recognized the value of big data—often referred to as the ‘oil of the 21st century’—and set out with a firm conviction to build core AI infrastructure in the Seoul metropolitan area, the ‘brain’ of Korea.

“Today, STT Seoul 1 stands as a timely oasis for advanced IT companies that have long faced infrastructure constraints, and a new milestone marking the future of Korea’s AI ecosystem. Going forward, we will continue to expand our collaboration with STT GDC, not only in Korea but also in shaping the next paradigm of the global AI ecosystem.”