Air emissions - sulphur dioxide (SO2)
In FY19 emissions significantly increased at AGL Torrens due to increased combustion of fuel oil while an increase at Somerton Power Station is due to an increase in electricity generation. Emissions increased at Newcastle Gas Storage Facility due to increased flaring activity in FY19. The decrease in emissions from AGL Loy Yang relates to a decrease in electricity generation resulting from unplanned outages. Variation in emissions for AGL's coal fired assets also relates to variable coal properties. Emissions for the National Assets were not reported in FY19 due to the portfolio of facilities being sold during FY19. There were no SOx emissions reported for Wallumbilla LPG Plant. The variation in emissions for other sites was generally consistent with the previous year.
FY19 data was updated in December 2019. 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 FY19 Annual Report on 08 August 2019.
All figures have been restated to the nearest kilogram.
Continuous Emission Monitoring Systems (CEMS) were introduced to Units 2, 3 and 4 at Bayswater Power Station in November 2017.
FY15 data for Bayswater and Liddell power stations represents emissions from the facility for the full financial year, although AGL only commenced operating these facilities from 2 September 2014.
Air emissions data for AGL sites is publicly reported NPI data. See www.npi.gov.au/
Hydrocarbon Extractions ceased production in October 2014.
The National Assets were sold in FY19.
Wallumbilla LPG Plant became operational in 2016 hence NPI reporting commenced in FY17.
The emission factors used in AGL's NPI reports are sourced from relevant industry emission estimation technique manuals available on the NPI website.