[ Solutions listing ](/en/solutions " Solutions listing") ## We understand your challenge - Air conditioners in Hong Kong account for 30% of annual energy use - Heavy electricity use for cooling affects air quality - Energy-efficient cooling methods can significantly improve health and wellbeing ## Explore our solutions for you **Veolia designs, builds, operates, and maintains district cooling systems. By generating chilled water at a central plant and distributing it via an underground pipe network for efficient cooling at buildings. This innovative approach removes the need to for standalone chillers and cooling towers.** ### Seawater Cooling Exchangers - Heat rejection for chillers. ### Central Chiller Plant - Generate chilled water for cooling purposes in a centralised facility for higher efficiency and lower electricity consumption. ### Distribution Network - Distribute chilled water at 6°C to buildings through a network of underground pipes. ### Centralised Control and Monitoring - Each plant is operated 24/7 by skilled personnel, helped by AI tools, ensuring the chillers are used at their maximum performance. ![](/sites/g/files/dvc4381/files/styles/crop_freeform/public/image/2025/02/BG%20Light%20Yellow%20%281%29.jpg.webp?itok=H1v0TRE7) ## Discover our core features **Resilient design for continuous operation** - A "three- pipe system" (1 for supply, 1 for return and 1 for standby) to increase reliability - Dual supply of electricity to guarantee power supply - Adaptable to varying cooling demand - Real time monitoring for optimal network management [Talk to an expert now](https://www.veolia.hk/en/energy-solutions-new-customer-enquiry) Savings of 20% compared with traditional air-cooled air-conditioning systems Savings of 35% compared with individual water-cooled air-conditioning systems using cooling towers 2nd in district heating and cooling networks in Europe ## Key figures ## Why work together with us ![Preserving the planet - yellow](/sites/g/files/dvc4381/files/styles/default/public/image/2025/03/Preserving%20the%20planet%20-%20P.png.webp?itok=eg7rKy05) Global expert and local experience ![Circular economy yellow](/sites/g/files/dvc4381/files/styles/default/public/image/2025/03/Circular%20economy%20-%20P_3.png.webp?itok=1b33-2Ag) Proven expertise in serving over 13,922 energy clients globally ![employees yellow](/sites/g/files/dvc4381/files/styles/default/public/image/2025/06/Employees%20-%20P.png.webp?itok=ra7R6e_3) High standard of service, safety and compliance [Talk to an expert now](https://www.veolia.hk/en/energy-solutions-new-customer-enquiry) [ ![kai tak DCS](/sites/g/files/dvc4381/files/styles/content_push_teaser/public/image/2026/02/534_BD_Kai%20Tak_ADupeyron.jpg.webp?itok=CGalHRcv) ](https://www.veolia.hk/en/solutions/district-cooling-system/case-study-ktdcs "Kai Tak District Cooling System") Kai Tak, Hong Kong [Kai Tak District Cooling System](https://www.veolia.hk/en/solutions/district-cooling-system/case-study-ktdcs "Kai Tak District Cooling System") District Cooling System [Discover](https://www.veolia.hk/en/solutions/district-cooling-system/case-study-ktdcs) [ ![sunhouse](/sites/g/files/dvc4381/files/styles/content_push_teaser/public/image/2025/06/20210122_Veolia_0275.jpg.webp?itok=D6oZVN4f) ](https://www.veolia.hk/en/energy-solutions-new-customer-enquiry "Sunhouse") Sheung Wan, Hong Kong [Sunhouse](https://www.veolia.hk/en/energy-solutions-new-customer-enquiry "Sunhouse") Energy Performance Contract + Indoor Air Quality Monitoring with connection to Hubgrade [Discover](https://www.veolia.hk/en/energy-solutions-new-customer-enquiry) [ ![asia society](/sites/g/files/dvc4381/files/styles/content_push_teaser/public/image/2025/06/Asia%20society.png.webp?itok=jqY179tT) ](https://www.veolia.hk/en/energy-solutions-new-customer-enquiry "Asia Society Hong Kong") Admiralty, Hong Kong [Asia Society Hong Kong](https://www.veolia.hk/en/energy-solutions-new-customer-enquiry "Asia Society Hong Kong") Energy Performance Contract [Discover](https://www.veolia.hk/en/energy-solutions-new-customer-enquiry) Previous Next ## Learn about our successful stories Veolia offers tailor-made solutions in energy services for building, contributing to a more circular and sustainable economy. Discover all our successful stories. You must have JavaScript enabled to use this form. Your Name Your Company Your Email Your Needs By completing this form, you give your consent to the collection and use of the personal data that concern you. [Read all the disclaimer.](https://www.veolia.com/en/form-disclaimer) **Contact us to build a sustainable future together** ## Explore our relevant solutions [Discover all solutions](https://www.veolia.hk/en/solutions) [ ![WENT landfill](/sites/g/files/dvc4381/files/styles/media/public/image/2025/12/314_HD_Went_ADupeyron.jpg.webp?itok=3HCVv1hv) ](https://www.veolia.hk/en/solutions/municipal-waste-management)[Treating Municipal Waste](https://www.veolia.hk/en/solutions/municipal-waste-management) ### [Treating Municipal Waste](https://www.veolia.hk/en/solutions/municipal-waste-management) [ ![Opark photo (1)](/sites/g/files/dvc4381/files/styles/media/public/image/2025/12/Opark%20photo%20%281%29.jpg.webp?itok=bAydWSiU) ](https://www.veolia.hk/en/solutions/organic-waste-treatment)[Recycling Organic Waste](https://www.veolia.hk/en/solutions/organic-waste-treatment) ### [Recycling Organic Waste](https://www.veolia.hk/en/solutions/organic-waste-treatment) [ ![cwtc day time](/sites/g/files/dvc4381/files/styles/media/public/image/2025/06/20241108_105256_0.jpg.webp?itok=gfMYc7Ep) ](https://www.veolia.hk/en/solutions/chemical-waste-treatment)[Treating Chemical and Hazardous Waste](https://www.veolia.hk/en/solutions/chemical-waste-treatment) ### [Treating Chemical and Hazardous Waste](https://www.veolia.hk/en/solutions/chemical-waste-treatment) [ ![20210122_Veolia_0460](/sites/g/files/dvc4381/files/styles/media/public/image/2025/12/20210122_Veolia_0460.jpg.webp?itok=JP1eP8JI) ](https://www.veolia.hk/en/solutions/Optimizing-Energy-Performance-of-Buildings)[Optimizing Building Energy Performance](https://www.veolia.hk/en/solutions/Optimizing-Energy-Performance-of-Buildings) ### [Optimizing Building Energy Performance](https://www.veolia.hk/en/solutions/Optimizing-Energy-Performance-of-Buildings) [ ![STF](/sites/g/files/dvc4381/files/styles/media/public/image/2026/01/HK_STF_005.jpg.webp?itok=KPZPJHZs) ](https://www.veolia.hk/en/solutions/sludge-treatment)[Treating Sludge](https://www.veolia.hk/en/solutions/sludge-treatment) ### [Treating Sludge](https://www.veolia.hk/en/solutions/sludge-treatment) Previous Next