Market Notices

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - NSW region - 07/03/2025

Refer AEMO Electricity Market Notice 125536

The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.

AEMO will no longer reclassify this event as a credible contingency event.

Region: NSW

Elements:
- Lismore132 - Mullumbimby 9U6 132kV Line
- Lismore132 - Mullumbimby 9U7 132kV Line
- Ewingsdale - Mullumbimby 9G5 132kV Line

Duration: 1730 hrs 11/03/2025 until 1230 hrs 27/05/2025

Constraint set(s) invoked: NONE

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Thursday, 22 May 2025

AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:

Unit: MP2
Duration: 22/05/2025 12:05 to 22/05/2025 12:25
Amount: 32 MW
Constraint: NC-N_MP2

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE SA1 Region Sunday, 18 May 2025

AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:

Unit: ADPBA1
Duration: 18/05/2025 13:30 to 18/05/2025 14:10
Amount: 6 MW
Constraint: NC-S_ADPBA1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE SA1 Region Saturday, 17 May 2025

AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:

Unit: TB2B1
Duration: 17/05/2025 19:40 to 17/05/2025 20:10
Amount: 13 MW
Constraint: NC-S_TB2B1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Monday, 12 May 2025

AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:

Unit: WTAHB1
Duration: 12/05/2025 15:05 to 12/05/2025 15:10
Amount: -9 MW
Constraint: NC-N_WTAHB1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE VIC1 Region Sunday, 11 May 2025

AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:

Unit: COHUNSF1
Duration: 11/05/2025 12:00 to 11/05/2025 12:15
Amount: 17 MW
Constraint: NC-V_COHUNSF1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Friday, 9 May 2025

AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:

Unit: NYNGAN1
Duration: 09/05/2025 09:55 to 09/05/2025 10:20
Amount: -85 MW
Constraint: NC-N_NYNGAN1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Friday, 9 May 2025

AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:

Unit: WOLARSF1
Duration: 09/05/2025 09:40 to 09/05/2025 09:50
Amount: 11 MW
Constraint: NC-N_WOLARSF1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Refer to Market Notice 101368

AEMO has completed a review of the system normal voltage stability limit in the south-west Victoria as a result of Mortlake terminal station cut-in on the Haunted Gully to Tarrone 500 kV line.

The revised limit is increased by 100 MW on the cut-set from Haunted Gully to Moorabool and Mortlake to Moorabool 500 kV lines for flow towards Moorabool.

Full details on the limits advice are to be published shortly on the AEMO website: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice

The revised limit has been implemented at 1201 hrs on Tuesday 29th April 2025, by updating V^^V_NIL_SWVIC.

For further details on this constraint equation please contact terry.liu@aemo.com.au

Terry Liu
AEMO Operations