We noted earlier that ‘AEMO Market Notice 126464 confirms trip transmission (linked to the APD smelter)’ … which followed the note about the ‘582MW (instantaneous?) drop in ‘Market Demand’ in Victoria delivers large System Frequency spike’ this morning (Thu 10th April 2025).
As 3rd article in the series, we share AEMO’s MN 126465 as follows:
‘——————————————————————-
MARKET NOTICE
——————————————————————-
From : AEMO
To : NEMITWEB1
Creation Date : 10/04/2025 10:00:31
——————————————————————-
Notice ID : 126465
Notice Type ID : INTER-REGIONAL TRANSFER
Notice Type Description : Inter-Regional Transfer limit variation
Issue Date : 10/04/2025
External Reference : Update – Inter-regional transfer limit variation – APD – Heywood – Mortlake 500 kV line – VIC region – 10/04/2025
——————————————————————-
Reason :
AEMO ELECTRICITY MARKET NOTICE
Update – Inter-regional transfer limit variation – APD – Heywood – Mortlake 500 kV line – VIC region – 10/04/2025
Refer to Market Notice 126464.
The cause of the unplanned outage of APD – Heywood – Mortlake 500 kV line in the VIC region has been identified and resolved. The outage has been completed and the APD – Heywood – Mortlake 500 kV line returned to service at 0948 hrs 10/04/2025
Constraint set(s) revoked: V-HYMO
Manager NEM Real Time Operations
——————————————————————-
END OF REPORT
——————————————————————-‘
… though it’s difficult to directly see a return to service of Portland Smelter, given that this is coincident with the rooftop PV juggernaut carving out ‘the duck curve’ out of Underlying Demand.
Leave a comment