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Environment

Air emissions - lead (Pb)

Emissions of lead at AGL Torrens (which includes the Barker Inlet Power Station) decreased 13% compared to FY19 figures, mainly due to the reduction in pipeline natural gas combusted at the facility. Barker Inlet Power Stations emissions contributed approximately 8% to the total reported emissions of AGL Torrens, due to the combustion of light fuel oil at the facility.

Loy Yang A Power Station emissions decreased 25% compared to FY19 figures. The reduction is mainly due to a 32% reduction in fugitive emissions of lead produced at the facility. Emissions produced from stack exhaust declined 8% compared to FY19, due to a 9% reduction in total coal combusted at the facility.

Bayswater Power Station emissions decreased 9% compared to FY19, due to a reduction in fugitive emissions from wind erosion and vehicle movement. Point source emissions, measured by stack tests, increased 26%.

Liddell Power Station emissions increased 45% compared to FY19, mainly due to variations in stack test results. Increased gas flow rate (up 19% compared to FY19) also contributed to increased emissions of lead.

Lead emissions at Silver Springs increased due to increased gas combustion in the TEG units and heater.

Lead emissions at Kwinana Swift Power Station decreased due to an 86% decrease in diesel fuel combustion.

Notes

  • FY20 data was updated in December 2020. A subset of data (comprising emissions associated with the combustion of black coal at Bayswater and Liddell power stations, black and brown coal as well as natural gas at AGL Loy Yang Power Station, and gas and fuel oil at AGL Torrens) was reported with the initial release of the FY20 Annual Report on 13 August 2020.

  • For the purposes of this data set, AGL Torrens comprises the Torrens Island Power Station and the Barker Inlet Power Station, which commenced operation in December 2019.

  • All figures have been restated to the nearest kilogram from FY17 onwards.

  • The National Assets were sold in FY19.

  • Wallumbilla LPG Plant became operational in 2016 hence NPI reporting for this site commenced in FY17.

  • Air emissions data for AGL sites is publicly reported NPI data (see www.npi.gov.au/).

  • Kwinana Swift Power Station was purchased by AGL in FY20.

  • The emission factors used in AGL's NPI reports are sourced from relevant industry emission estimation technique manuals available on the NPI website.

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