## A more energy efficient cooling solution 

Veolia has designed, built and operated Hong Kong's first District Cooling System to provide the new development area of Kai Tak with an energy efficient air-conditioning system.

The facility uses seawater as a cooling medium to produce chilled water to consumer buildings in the Kai Tak District, replacing traditional decentralised air-conditioning systems in the consumer buildings. Chilled water travels through an underground water distribution network to provide green cooling to an non-domestic air-conditioning area spanning 1.7 million m2 and consisting of offices, schools, MTR stations, shopping mall, hospital and Cruise Terminal.



 

 

 



 

 

    ![kai tak map](/sites/g/files/dvc4381/files/styles/default/public/image/2025/07/kaitak.jpg.webp?itok=Am7lqQO7)   





 

 

 



 

 

 

 





 

 

 

 





***Area Served***  
**1.73 million m2**

of non-domestic air-conditioned floor area



 

 

 

 

 

 



 

***Cooling Capacity***  
**284MW**



 

 

 

 

 

 



 

***Underground chilled water pipe network***

## 40 km   
 



 

 

 

 

 

 



 

 ***Electricity saved***  
**85 million kWh per year**



 

 

 

 

 

 



 

 

 





 

 

   ![White water](/sites/g/files/dvc4381/files/styles/default/public/image/2025/04/White_WATER%20-%20P.png.webp?itok=eEypIgt7)   



## Key Figures



 

 

 



 

 

 

 





 

 

   ![background](/sites/g/files/dvc4381/files/styles/crop_freeform/public/image/2025/04/background_0.png.webp?itok=3MQ1Tmq4)   





 

 

 

 

 






### Discover how Veolia transforms  
**other challenges into opportunities**



 

 

 



 

 

 

 





 [   ![Opark photo (1)](/sites/g/files/dvc4381/files/styles/content_push_teaser/public/image/2025/12/Opark%20photo%20%281%29.jpg.webp?itok=MsT1gqlH)   ](https://www.veolia.hk/en/solutions/organic-waste-treatment/case-study-opark1 "O.Park1 (Organic Waste Treatment Facility)") 

 Siu Ho Wan, Hong Kong 

 [O.Park1 (Organic Waste Treatment Facility)](https://www.veolia.hk/en/solutions/organic-waste-treatment/case-study-opark1 "O.Park1 (Organic Waste Treatment Facility)") 

 Harnessing Food waste For Renewable Energy in Hong Kong 

 

 

    

 

 

 

 

 

 [Discover](https://www.veolia.hk/en/solutions/organic-waste-treatment/case-study-opark1) 





 

 



 

 [   ![Hong Kong SENT landfill](/sites/g/files/dvc4381/files/styles/content_push_teaser/public/image/2016/12/SENT_151102_020_02_0.jpg.webp?h=c26d9323&itok=mo-TgpMP "Hong Kong SENT Landfill")   ](https://www.veolia.hk/en/solutions/landfill-management/case-study-sentx-went-nent " SENTX, WENT, NENT Landfills") 

 Multiple Location, Hong Kong 

 [ SENTX, WENT, NENT Landfills](https://www.veolia.hk/en/solutions/landfill-management/case-study-sentx-went-nent " SENTX, WENT, NENT Landfills") 

 Capturing Landfill Gas and Converting them into Green Electricity in Hong Kong 

 

 

    

 

 

 

 

 

 [Discover](https://www.veolia.hk/en/solutions/landfill-management/case-study-sentx-went-nent) 





 

 



 

 [   ![cwtc day time](/sites/g/files/dvc4381/files/styles/content_push_teaser/public/image/2025/06/20241108_105256_0.jpg.webp?itok=ET8Z9MeK)   ](https://www.veolia.hk/en/solutions/chemical-waste-treatment/case-study-cwtc "CWTC (Chemical Waste Treatment Center)") 

 Tsing Yi, Hong Kong 

 [CWTC (Chemical Waste Treatment Center)](https://www.veolia.hk/en/solutions/chemical-waste-treatment/case-study-cwtc "CWTC (Chemical Waste Treatment Center)") 

 Leading Hong Kong's Way in Safe and Sustainable Hazardous Waste Management 

 

 

    

 

 

 

 

 

 [Discover](https://www.veolia.hk/en/solutions/chemical-waste-treatment/case-study-cwtc)