Digital Edge Ansan SEL2 AI Data Center: Greater Seoul South Korea Specs

Status: Under Construction / Commissioning Phase | Location: Seonggok-dong, Danwon-gu, Ansan-si, Gyeonggi-do, Greater Seoul, South Korea

Project Overview

The Digital Edge Ansan AI Data Center, also known as SEL2, is a flagship 120 MW hyperscale facility located within the Ansan industrial cluster in the Greater Seoul Metropolitan Area, South Korea. Developed in partnership with SK Ecoplant, the project is positioned as one of the country’s largest carrier-neutral and AI-ready data center developments, designed to meet the rapidly increasing demand for high-density computing capacity across the Korean digital economy. SEL2 is engineered specifically to support dense GPU clusters, artificial intelligence training and inference, high-performance computing, cloud platforms, and other computationally intensive workloads that require substantial power and advanced thermal management. A major feature of the facility is its readiness for liquid cooling, enabling the infrastructure to accommodate next-generation AI servers and high-density GPU configurations that generate significantly more heat than conventional enterprise equipment. The development also incorporates hydrogen fuel cell power technology, supporting a more diversified and potentially lower-carbon approach to on-site energy resilience while contributing to the project’s broader environmental, social, and governance objectives. As a carrier-neutral facility, SEL2 is designed to provide customers with flexible connectivity options and access to multiple network operators, supporting reliable connections to regional and international telecommunications infrastructure. Its strategic location within the Greater Seoul Metropolitan Area provides access to one of Asia’s most concentrated technology, financial, enterprise, and digital services markets, while enabling low-latency connectivity to Seoul’s major business and technology hubs. The combination of substantial power capacity, AI-optimized infrastructure, liquid cooling readiness, hydrogen fuel cell technology, and carrier-neutral connectivity positions Digital Edge SEL2 as an important platform for South Korea’s expanding AI and cloud ecosystem. The facility is expected to play a significant role in supporting next-generation digital workloads while advancing more resilient and sustainability-focused data center infrastructure in the region.

Quick Facts

Field	Value
Project Name	Digital Edge Ansan SEL2 AI Data Center: Greater Seoul South Korea Specs
Location	Seonggok-dong, Danwon-gu, Ansan-si, Gyeonggi-do, Greater Seoul, South Korea
Status	Under Construction / Commissioning Phase
Commissioning	Target 2026 Phase 1 Energization
Total IT Load	120.0 MW Critical IT Power Capacity
Total Capacity	~45,000 m² (~484,375 sq ft) gross building area across high-density data halls
Tier Level	Tier III Concurrently Maintainable Architecture
Project Type	Purpose-Built Hyperscale Cloud, Enterprise Colocation & AI Compute Hub

City Profile

Header	Details
City Name	ansan
Population	Approximately 760,000 (as of the latest data).
Urban Agglomeration	The metropolitan area around Ansan, which includes nearby cities like Siheung and Hwaseong, has a population exceeding 1.5 million.
City GDP	Ansan is an industrial city, contributing significantly to South Korea's manufacturing GDP. Exact GDP figures are not readily available, but it is an essential hub in the Gyeonggi Province's economic structure.
Per Capita Income	South Korea’s national per capita income is around $32,000, and Ansan’s per capita is generally in the same range or slightly below due to its industrial character.
City Tier	Ansan is generally classified as a 2nd-tier city in South Korea due to its industrial and manufacturing base.
Key Strengths	Industry Hub: Ansan has a strong industrial base, particularly in electronics, automotive, and manufacturing.

Companies Involved

Header	Details
Developer / Operator	Digital Edge
Strategic Infrastructure Partner	KEPCO (Korea Electric Power Corporation), SK Ecoplant, Ansan City Government
Construction Contractor	SK Ecoplant (Lead EPC Contractor)
MEP Engineering	Mission-Critical Engineering Specialists & Digital Edge Global Design Teams
Network Connectivity	Carrier-neutral facility with path-diverse subterranean dark fiber entrance vaults, dedicated Meet-Me-Rooms (MMRs), direct interconnects to domestic tier-1 telcos (KT, SK Broadband, LG U+), and low-latency transport to major Seoul landing stations and cloud availability zones.
Power Infrastructure	Dual high-voltage grid connections served by KEPCO, on-site hydrogen fuel cell installations for supplemental low-carbon power, static N+1 / 2N uninterruptible power supply (UPS) modules, automated fast-transfer switchgear (ATS), and backup diesel generators with on-site bulk fuel storage.

Technical Specifications

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Power Capacity	~140+ MVA Dedicated Substation Grid Capacity Allocation
UPS Redundancy	Concurrently Maintainable N+1 / 2N Static UPS Architecture
Cooling System	High-efficiency mechanical cooling with closed-loop dry coolers, direct-to-chip liquid cooling (DLC) readiness for high-density AI clusters, cold-aisle containment, and real-time thermal monitoring.
Connectivity	Sub-millisecond optical dark fiber routes connecting Ansan directly to Seoul CBD, Yeouido financial district, Pangyo Techno Valley, and international subsea cable gateways.
PUE Target	< 1.25 Annualized Operational Design PUE
Energy Mix	Integrated hydrogen fuel cell energy generation combined with KEPCO grid supply and local renewable power purchase options.

Milestones

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Announcement	April 2023
Construction Start	2024 Groundbreaking
Phase 1 Go-Live	2026 Target
Full Buildout	Multi-Phase 120 MW Master Campus Delivery

Investment Details

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Total Investment	~$1,000,000,000 USD (~1.2 Trillion KRW Total Capital Expenditure)
Funding	Joint Venture Equity & Infrastructure Project Financing (Digital Edge & SK Ecoplant)