Environment

Air emissions - carbon monoxide (CO)

FY21 carbon monoxide from AGL Energy's major operations (AGL Loy Yang, Bayswater Power Station, Liddell Power Station, and AGL Torrens) decreased when compared to FY20 emissions.

AGL Loy Yang carbon monoxide emissions decreased by 12%. This is in contrast to the increase in electricity production observed at the facility (up 12%). Carbon monoxide emissions are monitored directly by Continuous Emissions Monitoring Systems (CEMS). The change in emissions is due to a change in the combustion environment, and is likely the result of more continuous, efficient coal combustion.

Bayswater Power Station carbon monoxide emissions decreased by 8%. Emissions are calculated using the total amount of fuel combusted, and the application of industry emission factors. The observed decrease directly aligns with the decrease in electricity produced by the facility (down 9%), and as such aligns directly with reduced combustion activity at the facility in the report period.

Liddell Power Station carbon monoxide emissions decreased by 28%. Emissions are calculated using the total amount of fuel combusted, and the application of industry emission factors. The observed decrease in carbon monoxide emissions aligns with the total reduction in coal combusted (down 28%), and reduced combustion activity observed at the facility.

AGL Torrens carbon monoxide emissions decreased by 20%. Emissions are calculated from the combustion of pipeline natural gas, light fuel oil, and diesel from both AGL Torrens and Barker Inlet Power Station generators. As AGL Torrens continues to wind down, and electricity production transitions to Barker Inlet Power Station, electricity production is more efficient. The observed decrease in carbon monoxide is most associated with the reduced combustion activity of Torrens Island Power Station generators.