Market Notices

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE VIC1 Region Friday, 15 May 2026

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

Unit: LYA2
Duration: 15/05/2026 20:30 to 15/05/2026 20:35
Amount: -16 MW
Constraint: NC-V_LYA2

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VicGrid has conducted studies and determined that the maximum generation contingency size in Victoria can be increased from 600 MW to 750 MW.

This change affects the generator limitations for prior outage conditions especially in the South-west Victoria area. The new generation limitation for outages is now 750 MW. AEMO has implemented this change in production on 13th May 2026 by updating generation constraints to increase the generation upper limits for outage conditions.

Please refer to the Network Outage Schedule for any upcoming outages in south-west Victoria here.
https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/data-nem/network-data/network-outage-schedule

For further details on this change please refer to VicGrid Limits Advice or contact VicGrid.
vicgrid.com.au/transmission-planning/planning-the-energy-grid

Terry Liu
AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Friday, 15 May 2026

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

Unit: BW04
Duration: 15/05/2026 01:30 to 15/05/2026 01:40
Amount: -28 MW
Constraint: NC-N_BW04

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AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE SA1 Region Thursday, 14 May 2026

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

Unit: HPR1
Duration: 14/05/2026 08:25 to 14/05/2026 08:30
Amount: 79 MW
Constraint: NC-S_HPR1

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AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - QLD region - 13/05/2026

Refer AEMO Electricity Market Notice 144073

At 1341 hrs the T157 Ingham South No.1 and No.2 132/66kV Transformers were returned to service.

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 not reclassify this event as a credible contingency event.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - QLD region - 13/05/2026

At 1255 hrs the T157 Ingham South No.1 and No.2 132/66kV Transformers tripped.

AEMO did not instruct load shedding.

AEMO estimates approximately 6MW of electrical load has been disconnected.

The cause of this non credible contingency event is not known at this stage.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Friday, 8 May 2026

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

Unit: WTAHB1
Duration: 08/05/2026 13:15 to 08/05/2026 13:20
Amount: 18 MW
Constraint: NC-N_WTAHB1

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AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - QLD region - 6/05/2026

At 1239 hrs the Townsville South No. 2 132 kV Bus tripped.

AEMO did not instruct load shedding.

AEMO has not been advised of any disconnection of bulk electrical load.

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 not reclassify this event as a credible contingency event.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Friday, 1 May 2026

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

Unit: BW03
Duration: 01/05/2026 05:10 to 01/05/2026 05:15
Amount: -80 MW
Constraint: NC-N_BW03

Auto-generated on behalf of Manager NEM Real Time Operations