The EMSD’s Regional Digital Control Centre uses the ChillStream^® artificial intelligence-based optimisation system to remotely monitor the performance of chillers in real time, thereby saving energy. Currently deployed at the Public Health Laboratory Centre and the Tseung Kwan O Hospital, the system will be progressively introduced to other client venues to enhance energy efficiency.

The EMSD has installed the artificial intelligence-based chiller optimisation system at the Queensway Government Offices. Compared to conventional chillers, the system effectively maintains the required temperature while significantly reducing energy consumption.

The Artificial Intelligence-based Air-side Equipment Optimisation solution, developed by the EMSD, was trialled at the MacLehose Dental Centre. This solution optimises the technical parameters of the air-handling unit by analysing real-time and historical data on indoor environmental changes and outdoor weather indicators, utilising mobile applications and web interfaces for remote monitoring and optimisation.

The EMSD has replaced two ageing chillers at the Police Headquarters. With the use of low-Global Warming Potential refrigerants, the new chillers offer enhanced energy efficiency.

The EMSD has replaced the air-cooled chillers at Princess Margaret Hospital with units using a low-Global Warming Potential refrigerant, effectively reducing greenhouse gas emissions. Given the mild flammability characteristics of the refrigerant, a refrigerant monitoring system has been installed to ensure operational safety.

To support the Strategy of Hydrogen Development in Hong Kong and promote the use of hydrogen fuel cell heavy vehicles in Hong Kong, we introduced three hydrogen fuel cell street washing vehicles for the Food and Environmental Hygiene Department. The trial of these vehicles commenced in the New Territories starting from June 2025.

The EMSD has enhanced the solar-powered compacting refuse bins of the Food and Environmental Hygiene Department with a remote monitoring system using Government-Wide Internet of Things Network. This system enables tracking of the remaining capacity, mechanical faults, and waste collection data.

Compared to traditional high intensity discharge floodlights, the new ultra-efficacy light emitting diode floodlights installed at the Police Officers' Club are more compact and lightweight, achieving approximately 40% savings in electricity consumption for external lighting.

We are currently replacing over 2000 solar panels on the rooftop of the EMSD Headquarters Building for the development of green energy. The new panels feature enhanced efficiency. Upon the replacement, each panel’s power output will increase from 150 watts to 430 watts, boosting renewable energy production.