Environment Performance
Energy Management and Greenhouse Gas Emissions
Non-Renewable Energy Consumption and Greenhouse Gas Emissions
TWC’s energy consumption data are compiled from its main energy-use sources, covering operating data on water supply power consumption, fuel generators, and official vehicle fuel use. The calculation basis includes electricity bills, fuel procurement records, and billing information for electricity, diesel, gasoline, and natural gas. Energy consumption in this report is converted into gigajoules (GJ) or multiples thereof, with relevant conversion factors estimated by reference to government-published coefficients and IPCC guidelines.
TWC continues to track annual purchased electricity, gasoline, and diesel consumption within the organisation to identify energy improvement opportunities, optimise water supply processes, and reduce carbon emissions. In 2025, purchased electricity increased slightly by approximately 0.84% to 1,024,574,320 kWh. Energy intensity rose marginally to 0.001148 GJ/m3, while unit electricity consumption for water supply increased slightly to 0.316 kWh/m3, calculated by dividing purchased electricity consumption by annual water supply volume. Greenhouse gas emissions intensity also rose slightly, by approximately 0.67%, reaching 0.151 kg CO2e/m3 in 2025.
TWC’s energy consumption data are compiled from its main energy-use sources, covering operating data on water supply power consumption, fuel generators, and official vehicle fuel use. The calculation basis includes electricity bills, fuel procurement records, and billing information for electricity, diesel, gasoline, and natural gas. Energy consumption in this report is converted into gigajoules (GJ) or multiples thereof, with relevant conversion factors estimated by reference to government-published coefficients and IPCC guidelines.
TWC continues to track annual purchased electricity, gasoline, and diesel consumption within the organisation to identify energy improvement opportunities, optimise water supply processes, and reduce carbon emissions. In 2025, purchased electricity increased slightly by approximately 0.84% to 1,024,574,320 kWh. Energy intensity rose marginally to 0.001148 GJ/m3, while unit electricity consumption for water supply increased slightly to 0.316 kWh/m3, calculated by dividing purchased electricity consumption by annual water supply volume. Greenhouse gas emissions intensity also rose slightly, by approximately 0.67%, reaching 0.151 kg CO2e/m3 in 2025.
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Waste, Wastewater Discharge and Air Pollution Management
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Environmental management
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