Environment

Air emissions - carbon monoxide (CO)

There was an overall decrease in carbon monoxide emissions from AGL's major operations (AGL Loy Yang, Bayswater Power Station, Liddell Power Station, and AGL Torrens) in FY23 compared to FY22.

AGL Loy Yang carbon monoxide emissions decreased 33% in FY23, following a general decreasing trend from FY20. The change in emissions is the result of more continuous and efficient coal combustion.

Bayswater Power Station carbon monoxide emissions decreased 5% in FY23. The observed decrease in emissions directly aligns with the decrease in sub-bituminous coal combustion (down 5%) and the decrease in total electricity generated (down 5%).

Liddell Power Station carbon monoxide emissions decreased 31% in FY23. Point source emissions are calculated using the total quantity of fuel combusted (sub-bituminous coal and diesel), and the application of industry emission factors. The observed decrease in emissions directly aligns with the decrease in sub-bituminous coal combustion (down 31%), and the decrease in total electricity generated (down 32%).

AGL Torrens carbon monoxide emissions decreased 9% in FY23. The observed decrease in carbon monoxide emissions is attributable to the decrease in pipeline natural gas combustion at Torrens Island Power Station (down 29%) and increase in pipeline natural gas combustion at Barker Inlet Power Station (up 9%).

Newcastle Gas Storage Facility carbon monoxide emissions increased due to an increase in gas flaring activity during the period.

Silver Springs Oil and Gas Project carbon monoxide emissions increased in FY23 due to the increase in unprocessed natural gas combustion.