Progress and Performance
In line with the HKUST 2020 Sustainability Challenge, HKUST has been proactive in the implementation of new initiatives and campus metrics analysis to better understand campus sustainability trends, performance, and areas of need.
Around 95% of total energy consumption comes from electricity. The consumption of electricity is an indicator of how we are doing with regards to air pollution and greenhouse gas emissions. In the 2018-19 academic year, HKUST consumed nearly 90 million kWh of electricity, which was a decrease of 3% compare to 2017-18 levels. During the year, Facilities Management Office paid great efforts in leading energy saving projects such as installing virtual stack fans, lighting retrofitting for common area, installing of variable speed drives for condensing water pumps at central chiller plant and recommissioning of BMS system for Enterprise Center.
As can be seen in the graph, significant decrease was achieved in energy consumption in 2018 and 2019. This is largely due to the energy reduction strategies in different facilities.
12-MONTH ROLLING AVERAGE
ELECTRICITY CONSUMPTION 2018-19
TOTAL = 90,186,094 KWH
Energy reductions are a top priority of the Sustainable Operations Executive Committee (OpCo), which oversees different on-going initiatives and aggressive energy reduction projects.
The main academic buildings and main chiller plan were the major drivers of energy consumption, representing 69% out of the total.
While electricity is the largest category of energy consumption, Towngas – a combination of natural gas and naphtha – accounts for 460,000 units (roughly equal to 6.13 million kWh). Towngas is a non-renewable source of energy and does contribute to the carbon footprint. There is no space heating provided in the main academic building, but Towngas is used for cooking in the canteens and domestic hot water in residence halls and staff quarters.
The remainder of the energy consumption (0.2% of the campus total) comes from liquid fuels for standby generators (stationery diesel) and transportation vehicles such as diesel and unleaded petrol.