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Environment

Air emissions - mercury (Hg)

Emissions from AGL Torrens (which includes the Barker Inlet Power Station) decreased 14% compared to FY19. The reduction is mainly due to a reduction in pipeline natural gas combusted at the facility. The Barker Inlet Power Station contributed approximately 8% of the emissions reported for AGL Torrens, produced mainly from the combustion of pipeline natural gas.

Loy Yang A emissions increased 5% compared to FY19, due to an increase of emissions measured at Unit 4, which saw a 29% increase in annual operating hours.

Emissions from the Bayswater Power Station decreased by 43%, mainly due to variations in stack test results.

Emissions from the Liddell Power Station decreased 57% compared to FY19, also due to variations in stack test results.

Emissions from 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.

  • The National Assets were sold in FY19.

  • Wallumbilla LPG Plant became operational in 2016 hence NPI reporting in respect of 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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