Market Notices

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE QLD1 Region Tuesday, 2 June 2026

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

Unit: MPP_2
Duration: 02/06/2026 15:30 to 02/06/2026 15:40
Amount: -26 MW
Constraint: NC-Q_MPP_2

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

AEMO will increase the Heywood test limit from SA to Vic (from the current 550 MW) to 600 MW today to conduct internetwork testing on Heywood.

The following constraint sets will be revoked once the testing criteria met:
I-SV_HEY_550_TEST

The following constraint sets will be invoked:
I-SV_HEY_600_TEST

AEMO will revert the Heywood test limit back to 550 MW once the test has completed while the test result being analysed.

Please also refer to the published formal PEC Stage 1 and HIC capacity release testing information at the following link: https://aemo.com.au/-/media/files/stakeholder_consultation/consultations/nem-consultations/2023/project-energyconnect-stage-1-and-hic-capacity-release/pec-stage-1-and-hic---final-test-program.pdf?la=en.

Terry Liu
AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE QLD1 Region Friday, 29 May 2026

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

Unit: MPP_1
Duration: 29/05/2026 16:05 to 29/05/2026 16:10
Amount: -23 MW
Constraint: NC-Q_MPP_1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Friday, 29 May 2026

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

Unit: NESBESS1
Duration: 29/05/2026 10:40 to 29/05/2026 10:45
Amount: -101 MW
Constraint: NC-N_NESBESS1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Thursday, 28 May 2026

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

Unit: NESBESS1
Duration: 28/05/2026 16:05 to 28/05/2026 16:10
Amount: 99 MW
Constraint: NC-N_NESBESS1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Wednesday, 27 May 2026

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

Unit: TALWA1
Duration: 27/05/2026 13:00 to 27/05/2026 13:05
Amount: -60 MW
Constraint: NC-N_TALWA1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE SA1 Region Wednesday, 27 May 2026

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

Unit: LGAPBS1
Duration: 27/05/2026 10:30 to 27/05/2026 10:35
Amount: -10 MW
Constraint: NC-S_LGAPBS1

Auto-generated on behalf of Manager NEM Real Time Operations

Refer to Market Notice 134696

AEMO has now completed the production of the Murraylink dynamic rating forecast model and the forecasting performance has been satisfactory during the test. AEMO will be enabling the pre-dispatch and PASA formulation using the Murraylink dynamic rating forecast on the following two constraint equations at 1000 hrs on Wednesday 27th May 2026.

VSML_RAT_LIM_DYN
SVML_RAT_LIM_DYN

For full details on the formulation, the updated constraint equations have now been loaded into AEMO's pre-production systems.

Terry Liu
AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE QLD1 Region Saturday, 23 May 2026

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

Unit: STAN-1
Duration: 23/05/2026 11:25 to 23/05/2026 11:30
Amount: 22 MW
Constraint: NC-Q_STAN-1

Auto-generated on behalf of Manager NEM Real Time Operations