Market Notices

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - NSW region - 26/11/2024

At 1637 hrs Uranquinty Unit 12 tripped and at 1639 hrs Uranquinty Units 11 and 13 tripped.

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

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

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1126 hrs on 22 November 2024

PRICES ARE NOW CONFIRMED for trading interval 22-Nov-2024 11:15.

In accordance with Market Notice 120795 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs applied. Prices have been carried forward from the previous dispatch interval

Changed Prices ($/MWh)

TYPE
Region Original Adjusted
Price Price
ENERGY
NSW1 $64.00 $25.81
QLD1 $62.79 $26.90
SA1 $8.61 $11.91
VIC1 $8.95 $12.00
LOWER1SEC
NSW1 $0.94 $0.10
QLD1 $0.94 $0.10
SA1 $0.94 $0.10
VIC1 $0.94 $0.10
LOWER60SEC
NSW1 $4.64 $1.82
QLD1 $4.64 $1.82
SA1 $4.64 $1.82
VIC1 $4.64 $1.82
LOWER6SEC
NSW1 $9.69 $4.89
QLD1 $9.69 $4.89
SA1 $9.69 $4.89
VIC1 $9.69 $4.89
LOWERREG
NSW1 $9.99 $19.85
QLD1 $9.99 $19.85
SA1 $9.99 $19.85
VIC1 $9.99 $19.85
RAISE1SEC
NSW1 $0.84 $0.05
QLD1 $0.84 $0.05
SA1 $0.84 $0.05
TAS1 $0.84 $0.05
VIC1 $0.84 $0.05
RAISE5MIN
NSW1 $0.05 $0.10
QLD1 $0.05 $0.10
SA1 $0.05 $0.10
VIC1 $0.05 $0.10
RAISE60SEC
NSW1 $0.00 $0.01
QLD1 $0.00 $0.01
SA1 $0.00 $0.01
VIC1 $0.00 $0.01
RAISE6SEC
NSW1 $0.01 $0.00
QLD1 $0.01 $0.00
SA1 $0.01 $0.00
VIC1 $0.01 $0.00
RAISEREG
NSW1 $7.99 $1.00
QLD1 $7.99 $1.00
SA1 $7.99 $1.00
VIC1 $7.99 $1.00


This is an AEMO autogenerated Market Notice.

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1117 hrs on 22 November 2024

PRICES ARE NOW CONFIRMED for trading interval 22-Nov-2024 11:10.

In accordance with Market Notice 120794 AEMO has reviewed this trading interval and determined that:
- Manifestly Incorrect Inputs applied. Prices have been carried forward from the previous dispatch interval

Changed Prices ($/MWh)

TYPE
Region Original Adjusted
Price Price
ENERGY
NSW1 $150.01 $25.81
QLD1 $143.43 $26.90
SA1 $53.81 $11.91
VIC1 $55.02 $12.00
LOWER5MIN
NSW1 $1.57 $0.39
QLD1 $1.57 $0.39
SA1 $1.57 $0.39
VIC1 $1.57 $0.39
LOWER60SEC
NSW1 $4.64 $1.82
QLD1 $4.64 $1.82
SA1 $4.64 $1.82
VIC1 $4.64 $1.82
LOWER6SEC
NSW1 $9.69 $4.89
QLD1 $9.69 $4.89
SA1 $9.69 $4.89
VIC1 $9.69 $4.89
LOWERREG
NSW1 $20.90 $19.85
QLD1 $20.90 $19.85
SA1 $20.90 $19.85
VIC1 $20.90 $19.85
RAISE1SEC
NSW1 $0.10 $0.05
QLD1 $0.10 $0.05
SA1 $0.10 $0.05
TAS1 $0.10 $0.05
VIC1 $0.10 $0.05
RAISE5MIN
NSW1 $0.05 $0.10
QLD1 $0.05 $0.10
SA1 $0.05 $0.10
VIC1 $0.05 $0.10
RAISE60SEC
NSW1 $0.05 $0.01
QLD1 $0.05 $0.01
SA1 $0.05 $0.01
VIC1 $0.05 $0.01
RAISE6SEC
NSW1 $0.10 $0.00
QLD1 $0.10 $0.00
SA1 $0.10 $0.00
VIC1 $0.10 $0.00
RAISEREG
NSW1 $5.00 $1.00
QLD1 $5.00 $1.00
SA1 $5.00 $1.00
VIC1 $5.00 $1.00


This is an AEMO autogenerated Market Notice.

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - VIC region - 12/11/2024

Refer AEMO Electricity Market Notice 120305

At 1135 hrs the Yallourn No 1 220 kV bus was 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 - VIC region - 12/11/2024

At 1041 hrs the Yallourn No 1 220 kV bus and Yallourn Unit 4 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 is not known at this stage.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - NSW region - 31/10/2024

Refer AEMO Electricity Market Notice 119689

At 0345 hrs the Wagga B 330 kV bus was 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 - NSW region - 31/10/2024

At 0028 hrs the Wagga B 330 kV bus tripped which offloaded the Wagga - Walla Walla SF 6Y 330 kV line and Wagga No.3 transformer.

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 is not known at this stage.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - VIC region - 18/10/2024

At 1525 hrs the Rowville - Yallourn No. 7 220 kV Line and the Rowville - Yallourn No. 8 220 kV Line tripped and auto-reclosed.

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 is not known at this stage.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

From 9th Oct 2024 AEMO will change constraints used during outages that create a credible risk of SA islanding.

From this date AEMO will:

1) Increase the maximum allowable flow on the V-SA interconnector from 50 MW to 250 MW in the VIC to SA direction, where the transmission outages is a planned outage.

2) Operate the SA region to the default 49-51 Hz target frequency containment band following a contingency event resulting in actual SA islanding. In order to meet this requirement, AEMO may now procure Contingency Raise FCAS locally from the SA region during these outages.

These changes reflect updated advice received by AEMO from the SA Jurisdictional System Security Coordinator.

The first network outage affected by this change is planned for 14th October 2024.

Andrew Groom
AEMO Operations