DayOne SIJORI Hyperscale Hub (Singapore Anchor)
Status: Active Expansion / Series C Funding Finalized | Location: Tai Seng / Jurong Cluster, Singapore
Project Overview
The DayOne SIJORI Hyperscale Hub represents a new paradigm in "cross-border" digital infrastructure. Officially rebranded from GDS International earlier in 2025, DayOne finalized negotiations on December 18, 2025, for a massive $2.6 billion (S$3.4 billion) Series C funding round, valuing the company at $10 billion. This capital injection is specifically earmarked for the completion of the "SIJORI" growth trianglea strategic cluster that links high-performance computing in Singapore with massive-scale capacity in Johor (Malaysia) and Batam (Indonesia).The Singapore anchor of this project is a high-density, AI-ready facility designed to function as the low-latency "Inference Hub" for the region. Because Singapore faces land and power constraints, DayOne has pioneered a "disaggregated campus" model. While the Singapore site handles mission-critical real-time processing, it is linked via a dedicated subsea fiber ring to a Gigawatt-scale "Training Hub" in Johor’s Nusajaya Tech Park. This allows hyperscalers to run energy-intensive AI model training in Malaysia—where power and space are abundant—while maintaining their core switching and low-latency applications in Singapore.Technically, the campus is a showcase for sustainable tropical engineering. It features a proprietary liquid cooling-as-a-service platform to support the extreme thermal demands of 100kW+ AI racks. On the sustainability front, the project is integrated with the "Johor-Singapore Special Economic Zone" energy initiatives, utilizing a mix of solar power from Malaysia and renewable energy imports to Singapore. This $2.6 billion funding milestone, led by global giants like SoftBank and Citadel, positions DayOne as the dominant independent hyperscale operator in Southeast Asia, providing a seamless digital bridge across three nations.
Quick Facts
| Field | Value |
|---|
| Project Name | DayOne SIJORI Hyperscale Hub (Singapore Anchor) |
| Location | Tai Seng / Jurong Cluster, Singapore |
| Status | Active Expansion / Series C Funding Finalized |
| Commissioning | Phase 1 (AI-Ready): Q2 2026 |
| Total IT Load | 120 MW (Singapore Campus) / 1 GW+ (SIJORI Regional) |
| Total Capacity | 45,000+ Sq. M. (Singapore Technical Area) |
| Tier Level | Tier III+ (Concurrent Maintainability) |
| Project Type | Brownfield Expansion / Cross-Border Hyperscale |
City Profile
| Header | Details |
|---|
| City Name | Singapore |
| Population | ~5.9 Million |
| Urban Agglomeration | ~6.2 Million |
| City GDP | ~$470 Billion |
| Per Capita Income | ~$88,000 |
| City Tier | Tier 1 (Global Digital Capital) |
| Key Strengths | Global connectivity, political stability, AI governance leader |
Companies Involved
| Header | Details |
|---|
| Developer / Operator | DayOne Data Centers Ltd |
| Strategic Infrastructure Partner | IMDA (Singapore) & MIDA (Malaysia) |
| Construction Contractor | Lendlease / Specialized Data Center MEP Partners |
| MEP Engineering | Tropical Hybrid Cooling (Air + Direct Liquid) |
| Network Connectivity | Cross-border "SIJORI Connect" Subsea Fiber Ring |
| Power Infrastructure | Dual 66kV Substation Feeds |
Technical Specifications
| Header | Details |
|---|
| Power Capacity | 120 MW (Singapore Node) |
| UPS Redundancy | 2N Redundancy |
| Cooling System | Closed-loop Chilled Water & Direct-to-Chip Liquid Cooling |
| Connectivity | Carrier-neutral; Direct link to Equinix & Global Switch |
| PUE Target | < 1.25 (Tropical Efficiency Excellence) |
| Energy Mix | Renewable Energy Certificates (RECs) + Imported Green Power |
Milestones
| Header | Details |
|---|
| Announcement | December 18, 2025 (Funding Finalization) |
| Construction Start | 2024 (Ongoing) |
| Phase 1 Go-Live | Mid-2026 |
| Full Buildout | 2028 |
Investment Details
| Header | Details |
|---|
| Total Investment | $2.6 Billion (Series C Funding Round) |
| Funding | SoftBank Vision Fund, Citadel, Hillhouse Investment |