FY18 Sustainability Report Transurban 30
Energy and climate change
Case study Clem7 energy and greenhouse gas saving initiative In FY18 we began a two-year trial of an alternative ventilation strategy for Clem7. The first six months of this trial have produced promising results, delivering energy and GHG savings without affecting air quality. Successful delivery of the trial and full implementation is forecast to deliver a 38 per cent reduction in axial fan run times and GHG reductions of 945 tCO 2 e per annum.
reduction in axial fan run times forecasted (FY18) 38%
Greenhouse gas emissions Scope 1 and 2 In FY18, our Scope 1 and 2 greenhouse gas (GHG) emissions were 123,545 tCO 2 Scope 1 emissions from fuel grew in FY18 due to increased operations and maintenance activity on some of our assets. Fuel usage can vary significantly each year with infrequent or one-off activities. We therefore expect our fuel emissions levels will continue to fluctuate over the long term. Scope 2 emissions from electricity decreased in FY18. The decrease was driven by several small lighting upgrades and operational improvements. Electricity usage represents 97 per cent of Transurban’s total emissions and we expect these emissions will decrease significantly over time as we continue implementing long-term energy reduction and procurement initiatives. Scope 3 Our current GHG emissions reduction target focuses on direct Scope 1 and 2 emissions. Expanding our focus to include Scope 3 (supply chain) emissions will ensure we are managing—and accountable for—the full impact of our operations, and will inform our activities in driving reductions throughout our supply chain. In FY18 we undertook significant mapping of our supply chain impacts, including the GHG intensity of our supply chain. This mapping will enable us to set additional targets and work with our supply chain partners on initiatives to reduce emissions for key products and services with high GHG impacts. e, similar to the previous year.
These long-term initiatives will ensure we reduce the carbon intensity of our supply chain into the future as well as reduce our exposure to carbon-sensitive products and services.
Scope 1 (fuel)
2,746 tCO 2
3,697 tCO 2
120,528 tCO 2 e 123,274 tCO 2 e
119,848 tCO 2 e 123,545 tCO 2 e
Scope 2 (electricity)
Scope 1 and 2
(Excludes M5 and M7)
Trip Compare tool— Customer vehicle emissions In FY18, we estimate that vehicles on Transurban roads produced almost 1,000,000 tCO 2 e. This is about eight times more than GHG emissions from our own operations, and represents an opportunity for us to ensure our road networks are efficient. Efficient roads help reduce customer emissions, as vehicles travelling in free-flowing traffic at higher cruising speeds operate more efficiently (and produce less GHG emissions) compared to slow or stop-start traffic. In 2018 we released a Trip Compare tool for CityLink that enables customers to visualise time, fuel and GHG emissions savings when using a Transurban toll road compared to alternative routes. Customers can choose to take the most efficient, free-flowing route, therefore reducing their emissions. The tool provides transparency with live traffic conditions, enabling customers to make an informed choice.
(Excludes M5 and M7)
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