Sustainability Milestone – Cooling a City Responsibly at Singapore’s Tampines Central District
Sustainability Milestone – Cooling a City Responsibly at Singapore’s Tampines Central District
Singapore’s 1st Brownfield Distributed District Cooling Network!
In tropical Singapore, large buildings like shopping centres, hospitals, and office towers usually use chilled water systems to regulate temperatures within their premises, keeping occupants comfortable. In its most basic form, this system consists of 1) a chiller room where heat is removed from water, 2) a closed loop network of pipes that run through the building, circulating this chilled water, 3) fans that blow air over the pipes, cooling it for distribution into the building’s rooms, 4) returning the now warmed wated back to the chiller for heat removal again.
While most buildings operate their own cooling systems, connecting 𝟕𝐞𝐱𝐢𝐬𝐭𝐢𝐧𝐠𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠𝐬 with 𝐨𝐧𝐞𝐬𝐡𝐚𝐫𝐞𝐝𝐧𝐞𝐭𝐰𝐨𝐫𝐤 is truly groundbreaking and exactly what we did at Tampines!
The successful completion of the Tampines Central Distributed District Cooling (DDC) System marks a significant milestone in sustainable infrastructure development. Developed by SP Sustainability & Engineering Pte Ltd (SPSE), a subsidiary of SP Group, and delivered in close collaboration with our project team, this initiative stands as a testament to engineering excellence, sustainable innovation, and smart urban planning in one of Singapore’s most vibrant town centres.
Project Highlights
Between December 2022 and September 2024, HSC successfully installed a 1.2km twin-pipe network, complete with 20 gate valves and 2 butterfly valves. The system was tested and commissioned in October and November 2024, a watershed achievement in Singapore’s green infrastructure journey. The Tampines Central DDC System will:
• 𝐑𝐞𝐝𝐮𝐜𝐞 carbon emissions by 𝟏,𝟎𝟎𝟎𝐭𝐨𝐧𝐧𝐞𝐬 per year = the same as removing 910 petrol cars from our roads
• 𝐒𝐚𝐯𝐞 over 𝟐.𝟑𝐦𝐢𝐥𝐥𝐢𝐨𝐧𝐤𝐖𝐡 of energy annually = enough to power an additional 710 three-room HDB households
• Free up𝟐𝟓,𝟎𝟎𝟎𝐬𝐪𝐟𝐭 of space previously occupied by chiller plants = more recreation, commercial, and industrial space for building owners to utlitize
Urban Complexity Requires Smart Solutions
Situated in a densely developed brownfield environment surrounded by residential blocks, Mass Rapid Transit (MRT) lines, office buildings, shopping malls, and the ever-busy Tampines bus interchange, the project encountered several unique challenges:
• Restricted working hours due to limited daytime access and noise constraints at night
• Complex underground services, requiring precise utility detection and coordination
• Heavy pedestrian and vehicular traffic, especially at key junctions
💡 Our Solutions:
• Optimized pipe alignments using Ground Penetrating Radar (GPR) to detect existing underground services and planning the DDC chilled water pipe loop around this information.
• Employed manual tunneling (a trenchless method) to cross major intersections and reduce surface disruptions to traffic and the public.
• Maintained strong two-way communication with stakeholders and local authorities to ensure public safety and minimal inconveniences.
Why It Matters
District cooling is a powerful enabler of sustainable urban development. By centralising chilled water production, it significantly reduces energy usage, lowers carbon emissions, and enhances long-term efficiency.
This successful collaboration with SPSE sets a strong precedent for future DDC initiatives and we look forward to expanding such systems across Singapore in support of a low-carbon, climate-resilient future.
We extend our sincere appreciation to the SPSE Project Management team for their clear direction and collaborative spirit, our site operations, safety personnel, and manual tunneling crew for their tenacity and professionalism under demanding conditions, and our vendors and suppliers for their unwavering support and timely contributions. Your collective efforts were critical in bringing this complex and meaningful project to life.
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