Network IMPROVEMENTS PROJECTS

Project Descriptions

Most MTR stations are located underground and are equipped with air-conditioning and ventilation systems to provide passengers with a comfortable travelling environment.

Some of these systems have been in service since the commissioning of the stations. To enhance energy efficiency and system reliability, the Corporation is implementing a multi-phase chiller replacement programme across stations and depots.

Phase I of the programme was completed in 2022, replacing 154 chillers across 7 railway lines and 35 stations. Phase II was completed in 2025, covering the replacement of a further 31 chillers across 5 railway lines and 12 stations.

Upon completion of these phases, the upgraded systems are expected to achieve energy savings of at least 20%, while improving operational performance and service reliability.

The third phase of the programme is currently underway, covering 20 chillers across 6 railway lines and 9 stations, with target completion by 2028.