ST Telemedia Global Data Centres (STT GDC) officially opened its first data center in Seoul, South Korea, on June 16, 2026, marking the company’s expansion into the Northeast Asia market [1, 2]. The facility, called STT Seoul 1, boasts a power capacity of 30 megawatts and covers about 40,000 square meters of gross floor area [1, 2]. It is designed to support hyperscale and enterprise clients requiring expanded AI workloads and cloud infrastructure [1, 2].
STT GDC holds a 60% ownership stake in the joint venture operating the facility, with South Korean firm Hyosung Heavy Industries owning the remaining 40% [1, 2]. The data center features power usage effectiveness (PUE) below 1.3, and dual 22.9 kilovolt power feeds. Backup generators can run for up to 24 hours without refueling, ensuring continuous operation during outages [1, 2].
Charles Chulhoy Huh, STT GDC’s country head for South Korea, said the facility "establishes an important foundation for STT GDC’s presence in (South) Korea, extending a globally consistent platform into a key North-east Asian market". He added that "AI infrastructure demand is increasingly concentrating in markets where digital capability, power availability and customer requirements come together" [2].
The launch came less than a week after STT GDC announced plans to expand its Jakarta, Indonesia data center operations amid rising digital demand in the region [1, 2]. This new center adds to STT GDC’s existing footprint in Singapore, Malaysia, Indonesia, Japan, India, and the UK [1, 2].
Singapore’s ambassador to South Korea, Wong Kai Jiun, said "trusted digital infrastructure will play a crucial role in enabling deeper cross-border connectivity and collaboration as both nations advance their digital economies and AI capabilities" [1].
STT Seoul 1’s strategic location and technical specifications are aimed squarely at growing demand from AI and cloud customers looking for reliable, high-density computing power in Northeast Asia [1, 2]. The company is positioning the center as a critical node for scalable and resilient AI infrastructure in the region.
