Singapore-based data centre firm DayOne has officially broken ground on its first facility in the city-state, marking a major step forward in the company’s regional expansion and sustainability efforts. The 20-megawatt (MW) centre, set to begin operations in 2026, will feature approximately 40,000 square metres of gross floor area.
DayOne Data Centers CEO Jamie Khoo speaking at the ground breaking event in Singapore on July 25.
Engineered with a strong focus on sustainability, the facility will accommodate high-density air-cooled GPUs and deploy a combination of hybrid air and liquid cooling technologies—specifically designed to handle the thermal demands of AI workloads.
In a pioneering move towards clean energy, DayOne will implement Solid Oxide Fuel Cell (SOFC) power systems at the site as a proof-of-concept for hydrogen-powered energy. This system is expected to contribute 0.3MW to the facility’s power needs and supports broader efforts to diversify power sources and bolster Singapore’s green energy transition.
The company will seek both LEED Platinum and BCA Green Mark Platinum (GMDC:2024) certifications, aligning with global best practices in energy efficiency and environmental performance.
“Our SG1 facility represents our deep commitment to Singapore as our base and regional hub, while showcasing our long-term vision to drive Southeast Asia’s digital transformation with sustainable infrastructure,” said Jamie Khoo, CEO of DayOne Data Centers. The company also operates or develops data centres across Hong Kong SAR, Indonesia, Japan, Malaysia, and Thailand.
To meet its goal of running entirely on renewable energy, DayOne has signed a 10-year Power Purchase Agreement (PPA) with Sembcorp Power, a subsidiary of Sembcorp Industries. The electricity provided under the agreement will be backed by bundled Renewable Energy Certificates (RECs), sourced locally or imported via cross-border grid connections. This PPA also opens avenues for future energy collaborations.
“The explosive growth of AI infrastructure demands a sustainable response. Our partnership with DayOne underscores our joint commitment to powering digital transformation with clean, future-proof solutions,” said Koh Chiap Khiong, President and CEO of Gas and Related Services and Singapore CEO at Sembcorp Industries.
DayOne is also collaborating with the National University of Singapore (NUS) as part of Phase 2.0 of the Sustainable Tropical Data Center Testbed (STDCT 2.0). The initiative includes pilot testing of advanced cooling technologies adapted for tropical climates.
“With STDCT 2.0, we’re trialing next-generation solutions—from flexible-fuel generators and fuel cells to state-of-the-art liquid cooling—to prove that sustainability and performance can coexist. These innovations lay the groundwork for resilient, energy-efficient digital infrastructure in Singapore and beyond,” said Professor Lee Poh Seng, STDCT Programme Director and Head of Mechanical Engineering at NUS.
The SG1 facility is one of four green data centre proposals approved by the Singapore Economic Development Board (EDB) and Infocomm Media Development Authority (IMDA) in 2023, with awarded capacity to support the country’s digital growth.
This development plays a key role in Singapore’s plan to add at least 300MW of new data centre capacity, a critical component of the National AI Strategy 2.0.
