In order to facilitate like-for-like comparisons with other metro operators, some KPIs for our railway operations, such as energy use, water consumption and waste management, reflect environmental impacts from revenue-generating activities only. For example, data on electricity purchased for heavy rail includes traction energy and auxiliary energy used by trains, as well as energy use in stations and depots but excludes energy used during testing and commissioning phases of new rail lines as well as by advertising panels and station kiosks.
Projects Division and Property Division
We monitor performance on our construction sites in accordance with Environmental Impact Assessments for our projects. Our KPI for general waste monitors the amount of waste that is transferred from network expansion project sites to Public Fill Reception Facilities that are managed by the Civil Engineering and Development Department or transported to alternative construction sites.
We do not report on impacts that are outside the direct control or influence of the Company, such as energy use and water consumption that is the responsibility of contractors on our construction sites, and the responsibility of tenants in our managed and investment properties.
In line with the Scope of this Report, we disclose data on greenhouse gas (GHG) emissions, including CO2, CH4 and N2O, for the principal activities of the Company in Hong Kong. In general, we apply the operational control approach to defining our organisational boundary. This means that our GHG inventory accounts for 100 per cent of GHG emissions from operations over which we have operational control, but does not account for GHG emissions from operations over which we do not have control.
Please note that our GHG emissions inventory does not currently include activities of two Hong Kong subsidiaries over which we have operational control, namely Octopus and Ngong Ping 360. Data on GHG emissions for subsidiaries engaged in railway operations outside of Hong Kong is reported separately.
The following table provides a summary of our GHG inventory, which aligns with the Greenhouse Gas Protocol that is jointly published by the World Business Council for Sustainable Development and the World Resource Institute. We have accounted for operations and activities that contribute direct emissions and removals (Scope 1) and energy-related indirect emissions (Scope 2). We have also chosen to report on other indirect emissions (Scope 3) that we consider to be relevant and material to our business.
Scope 1 emissions are direct emissions from owned or controlled sources such as on-site electricity generators and boilers, dedicated motor vehicle fleets and leakage from refrigeration systems.
Scope 2 emissions are indirect emissions resulting from production and transportation of electricity, heating, cooling and steam that are purchased by the reporting entity from off-site providers.
Scope 3 emissions are indirect emissions from both upstream and downstream activities in the value chain of the reporting entity other than those included in Scope 2. Some examples include emissions associated with the supply of resources and materials to the reporting entity such as water, activities that are outsourced by the reporting entity such as treatment and disposal of waste, as well as staff business travel.