SWIRE PROPERTIES

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Environment

Efficient Use of Energy

Since 2001, when we first adopted a systematic approach to managing our energy consumption, we have implemented measures to reduce our annual energy consumption and annual CO2 emissions by approximately 14 million kWh and 9,900 tonnes respectively.

Knowledge Based Energy Management

Building on our experiences gained over the past five years, we have moved on to focus on the systematic collection and analysis of operation energy performance data. With this we are able to better formulate our energy saving strategies.

In 2006, we started piloting the collection and storage of data from our Building Management System. Software prototypes have been developed to monitor the performance of our air-conditioning systems.

Three pilot studies to improve energy efficiencies of our air-conditioning system have been successfully carried out (Table 1). Those initiatives will be applied to our other buildings.

Our Award Winning Portfolio:

Oxford House, TaiKoo Place

  • Hong Kong Energy Efficiency Award (HKEEA) 2006 – Grand Award (Commercial and Residential Buildings category) and Gold Award

Festival Walk

  • HKEEA 2006 – Bronze Award
  • The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) Technology Award 2006 – Honourable Mention Award

Cityplaza One, Three, Four and shopping mall

  • HKEEA 2006 – Merit Award
Table 1. Pilot studies to improve energy efficiencies
1 In Lincoln House, the completed chilled water system was changed to variable flow. The flow rate through the chillers will vary according to actual demand. Substantial reduction in energy consumption by the water pumps was achieved. (Chart 1)

Chart1

Chart 1. Energy Savings Achieved after Chiller Plant Conversion at Lincoln House

2 In Cityplaza One, a control programme was in operation to automatically adjust the pressure of the chilled water system according to actual demand. Energy consumption by the water pumps has been substantially reduced.
3 In Festival Walk, variable speed drives were installed to two air handling units to adjust their flow rate based on actual demand. Fan power savings up to 60% have been achieved.


Influencing Stakeholders

Building on our own knowledge, we have started to more proactively influence our stakeholders to improve their energy performance.

Energy Consumption in 2006

Energy initiatives taken in 2006 allowed us to achieve energy savings up to 3.5 million kWh per year. However, the overall electricity consumption in our managed commercial properties and residential buildings increased in 2006 (Table 2). This was largely due to the substantial increase in occupancy rates at our portfolio centres and office complexes.

Table 2. Electricity purchased by commercial complexes and residential buildings managed by Swire Properties
  EHS Data Unit 2003 2004 2005 2006
 

Electricity Purchased 

MWh 210,770 209,781 219,512 225,564