MENU PLACES PEOPLE PARTNERS PEPERRFOFORRMMAANNCCEE PERFORMANCE ((ENENVVIIRROONNMENMENTT)) (ECONOMIC) Performance (Environment) Policies 2022 Progress Profile of Environmental Impacts Climate Change Energy Resource and Circularity Water Biodiversity Occupant Wellbeing Building/Asset Investments Multiple Energy Saving Strategies Across our Portfolio As in previous years, in pursuit of ever-better energy performance, Swire Properties continued to perform technical upgrades at all our properties. These included: Energy Valve Installation at Citygate Outlets We installed energy valves at the main chilled water supply zones and in the offices and shops of Citygate Outlets to optimise energy use by controlling chilled water temperatures and preventing overcooling of occupied areas. These valves enable flow control and delta temperature control of the chilled water system, which will in turn produce a better energy performance. They will also accumulate operational data for analysis and verification. This ongoing project will cover all zones of the Citygate mall and offices by 2026. Electrically-commutated (“EC”) Motor Plug Fan Retrofits Across Our Properties Centrifugal fans in air handling units (“AHUs”) at Taikoo Place, Cityplaza, Pacific Place, Citygate, Island Place Mall and Taikoo Hui Guangzhou were replaced with electrically-commutated (“EC”) plug fans that achieve better energy performance and produce less noise and vibration. These fans are estimated to reduce fan power consumption by 20 to 30%. Conversion to Variable Primary Flows in our Chilled Water Systems At Cityplaza, we have converted our chilled water system from constant-primary variable-secondary to a variable-primary flow system. The new system eliminates a set of pumps and eliminates the possibility of low delta temperature syndrome, thus reducing the energy consumption of the overall chilled water distribution system. This conversion is expected to save 220,000 kWh per year. Replacement of High-efficiency Air-cooled Chillers We completed the replacement of two air-cooled chillers at Berkshire House, which is expected to save 249,000 kWh per year. Installation of an Automatic Chiller Condenser Tube Cleaning System We completed the installation of automatic chiller condenser tube cleaning system for all chillers at Devon House, which is served by seawater, thus improving its heat transfer efficiency. This is expected to reduce energy consumption by 384,000 kWh per year. Chiller Replacement Project at Sino-Ocean Taikoo Li Chengdu One light duty chiller was replaced with a more energy-efficient variable speed drive chiller in April 2022, which will save about 100,000 kWh of electricity per year. SUSTAINABLE DEVELOPMENT REPORT 2022 192