ENGIE and Sunway Property have expanded the Sunway Square District Cooling System (DCS) to cover Sunway Education’s facilities, including Sunway University and Sunway College campuses, in a move supporting Malaysia’s low-carbon goals.

The expanded network, scheduled for completion in September 2026, will provide up to 3,000 refrigeration tonnes (RT) of cooling across eight buildings, meeting up to 60% of peak cooling demand and approximately 75% of annual needs.

The initiative is projected to cut carbon emissions by 29%, equivalent to more than 48,000 tonnes of CO₂ avoided over a 24-year contract period, aligning with Malaysia’s commitment under the Paris Agreement to reduce greenhouse emissions by 45% by 2030.

The expansion builds on the first DCS launched in June 2025, which supplies chilled water to four commercial buildings in Sunway Square, demonstrating measurable carbon and energy savings in dense, mixed-use developments. 

The latest phase will connect newly constructed buildings such as the Engineering Annex, Faculty of Engineering & Technology, and Graduate Centre. The retail component of Sunway Square is set to open in December 2025, while the performing arts centre is scheduled for 2026.

ENGIE and Sunway Property emphasised that the expansion reflects a long-term commitment to scalable, low-carbon urban infrastructure. The project integrates advanced engineering solutions, including a Chilled Water Thermal Energy Storage (TES) tank designed as a “mechanical battery” to improve efficiency, resilience, and cost optimisation. In a space-conscious design, the TES tank has been incorporated within a car ramp spiral, maintaining architectural aesthetics while maximising functionality.

ENGIE operates over 100 district cooling networks worldwide, including projects in Southeast Asia such as the Megajana DCS in Cyberjaya, Northgate DCS in the Philippines, and Punggol Digital District DCS in Singapore, showcasing a track record of delivering low-carbon, energy-efficient solutions.

Sunway Property highlighted the role of sustainable urban planning in its master developments, noting that the expansion further integrates advanced energy solutions across Sunway City Kuala Lumpur to create smarter, more sustainable communities.

Professor Dato’ Elizabeth Lee, Chief Executive Officer of Sunway Education Group, said the partnership allows the institution to demonstrate sustainable practices while offering students practical exposure to low-carbon infrastructure, bridging theory with real-world application.

The Sunway Square DCS is projected to achieve around 20% energy savings in air conditioning costs and CO₂ emissions, laying the groundwork for a wider network across commercial and institutional developments in the region.

This collaboration between ENGIE and Sunway Property highlights the potential for integrating sustainable infrastructure within high-density urban environments, supporting Malaysia’s low-carbon transition and serving as a model for similar developments across Southeast Asia.