Environment

Air emissions - volatile organic compounds (VOC)

Bayswater Power Station total VOC emissions decreased 97%. The significant decrease in emissions was due to a change in the way in which emissions were calculated in FY23. In FY23, point source emissions were calculated using the summed total of individual VOCs measured from two rounds of stack tests on each of the four units. In previous years, point source emissions were calculated by application of emission factors to the total amount of coal combusted at the facility. Using results from stack testing is more accurate than using emission factors.

Liddell Power Station total VOC emissions decreased 78%. Point source emissions are calculated using the summed total of individual VOCs measured in stack tests. Measurements of individual VOCs were lower in FY23 compared to FY22, with most VOC substances below the detection limit. This, combined with the decrease in operating hours, resulted in a 93% decrease in point source VOC emissions

AGL Torrens total VOC emissions decreased 22%.The decrease in emissions aligns with the overall decrease in pipeline natural gas combustion at Torrens Island and Barker Inlet power stations (down 23%).