Following the simultaneous trip of YWPS3 and YWPS4 units at Yallourn as flagged in Market Notice 129724, AEMO posted this subsequent market notice (MN129721) dated 2025-10-16 13:56:11 to note directions issued for maintaining System Strength in Victoria.
MARKET NOTICE 129721
________________________________________________________________________________________________Notice ID : 129721
Notice Type ID : Reserve Contract / Direction / Instruction
Notice Type Description : MARKET
Issue Date : Thursday, 16 October 2025
External Reference : Direction – VIC region 16/10/2025
________________________________________________________________________________________________AEMO ELECTRICITY MARKET NOTICE
Direction – VIC region 16/10/2025
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the VIC region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).
The issue of the direction commences an AEMO intervention event. AEMO declares all trading intervals during the event to be intervention trading intervals, commencing from the interval ending 1355 hrs on 16/10/2025.
Intervention pricing does not apply to this AEMO intervention event.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.
Manager NEM Real Time Operations
This again was followed up by three more specific notices — MN129720, MN129722, MN129723 — all of similar form, noting units JLA02, JLA03 and JLB03 at Jeeralang Power Station had been the ones directed to “Synchronise and follow dispatch targets at 1350 hrs 16/10/2025” for reasons of system strength.
MARKET NOTICE 129722
________________________________________________________________________________________________Notice ID : 129722
Notice Type ID : Reserve Contract / Direction / Instruction
Notice Type Description : MARKET
Issue Date : Thursday, 16 October 2025
External Reference : Direction – VIC region to EnergyAustralia Ecogen Pty Ltd – JLA03 JEERALANG A PO
________________________________________________________________________________________________AEMO ELECTRICITY MARKET NOTICE
Direction – VIC region to EnergyAustralia Ecogen Pty Ltd – JLA03 JEERALANG A PO
Refer to Market Notice 129721
In accordance with section 116 of the National Electricity Law, AEMO is issuing a direction to EnergyAustralia Ecogen Pty Ltd. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).
Direction issued to: EnergyAustralia Ecogen Pty Ltd – JLA03 JEERALANG A PO at 1350 hrs 16/10/2025
Type of resource: generating unit
Required actions: Synchronise and follow dispatch targets at 1350 hrs 16/10/2025
Services provided: System Strength
Circumstances necessitating the Direction:System Strength
Circumstances necessitating the Direction additional detail: intervention is required to maintain the power system in a secure operating state
Expected duration: until further notice.EnergyAustralia Ecogen Pty Ltd does not incur any civil monetary liability for a relevant action taken in accordance with this direction unless the action is taken in bad faith.
Manager NEM Real Time Operations
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