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131738RESERVE NOTICE17/12/2025 12:59:02 PM
PDPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 18/12/2025
AEMO ELECTRICITY MARKET NOTICE
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following Periods:
[1.] From 1600 hrs 18/12/2025 to 1830 hrs 18/12/2025.
The forecast capacity reserve requirement is 1400 MW.
The minimum capacity reserve available is 840 MW.
[2.] From 2000 hrs 18/12/2025 to 2030 hrs 18/12/2025.
The forecast capacity reserve requirement is 1468 MW.
The minimum capacity reserve available is 1025 MW.
Manager NEM Real Time Operations
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following Periods:
[1.] From 1600 hrs 18/12/2025 to 1830 hrs 18/12/2025.
The forecast capacity reserve requirement is 1400 MW.
The minimum capacity reserve available is 840 MW.
[2.] From 2000 hrs 18/12/2025 to 2030 hrs 18/12/2025.
The forecast capacity reserve requirement is 1468 MW.
The minimum capacity reserve available is 1025 MW.
Manager NEM Real Time Operations
131737RESERVE NOTICE17/12/2025 12:48:45 PM
PDPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the SA Region on 18/12/2025
AEMO ELECTRICITY MARKET NOTICE
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the SA region for the following Periods:
[1.] From 1730 hrs 18/12/2025 to 1800 hrs 18/12/2025.
The forecast capacity reserve requirement is 635 MW.
The minimum capacity reserve available is 465 MW.
[2.] From 2030 hrs 18/12/2025 to 2130 hrs 18/12/2025.
The forecast capacity reserve requirement is 636 MW.
The minimum capacity reserve available is 511 MW.
Manager NEM Real Time Operations
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the SA region for the following Periods:
[1.] From 1730 hrs 18/12/2025 to 1800 hrs 18/12/2025.
The forecast capacity reserve requirement is 635 MW.
The minimum capacity reserve available is 465 MW.
[2.] From 2030 hrs 18/12/2025 to 2130 hrs 18/12/2025.
The forecast capacity reserve requirement is 636 MW.
The minimum capacity reserve available is 511 MW.
Manager NEM Real Time Operations
131697RESERVE NOTICE16/12/2025 02:38:17 PM
STPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 19/12/2025
AEMO ELECTRICITY MARKET NOTICE
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following period:
From 1530 hrs to 1600 hrs 19/12/2025.
The forecast capacity reserve requirement is 1400 MW.
The minimum capacity reserve available is 1367 MW.
AEMO Operations
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following period:
From 1530 hrs to 1600 hrs 19/12/2025.
The forecast capacity reserve requirement is 1400 MW.
The minimum capacity reserve available is 1367 MW.
AEMO Operations
131696RESERVE NOTICE16/12/2025 02:37:56 PM
STPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 18/12/2025
AEMO ELECTRICITY MARKET NOTICE
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following period:
1. From 1600 hrs to 1630 hrs 18/12/2025.
The forecast capacity reserve requirement is 1400 MW.
The minimum capacity reserve available is 1392 MW.
2. From 1900 hrs to 2000 hrs 18/12/2025.
The forecast capacity reserve requirement is 1498 MW.
The minimum capacity reserve available is 1080 MW.
AEMO Operations
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following period:
1. From 1600 hrs to 1630 hrs 18/12/2025.
The forecast capacity reserve requirement is 1400 MW.
The minimum capacity reserve available is 1392 MW.
2. From 1900 hrs to 2000 hrs 18/12/2025.
The forecast capacity reserve requirement is 1498 MW.
The minimum capacity reserve available is 1080 MW.
AEMO Operations
131662CONSTRAINTS15/12/2025 02:40:31 PM
Management of Over-Frequency conditions in South Australia
AEMO ELECTRICITY MARKET NOTICE
AEMO has conducted technical assessments to evaluate the adequacy of existing over-frequency generator shedding (OFGS) scheme in South Australia. The OFGS scheme helps to maintain frequency operating standards by tripping generators in a pre-determined manner during over-frequency conditions, to minimise the risk of cascade tripping.
AEMO?s review found that system security risks can arise when high levels of power transfer out of SA coincide with periods when the available OFGS capacity is insufficient to manage potential over-frequency conditions for a non-credible trip of the Heywood interconnector. As such a system normal constraint is required to manage the combined SA export capacity under such conditions, so as to maintain SA power system operations within the limits advised by ElectraNet.
The following constraint equation was implemented at 1425hrs 15 December 2025:
S_V_HEYWOOD_OFGS
Ben Blake
AEMO Operations
AEMO has conducted technical assessments to evaluate the adequacy of existing over-frequency generator shedding (OFGS) scheme in South Australia. The OFGS scheme helps to maintain frequency operating standards by tripping generators in a pre-determined manner during over-frequency conditions, to minimise the risk of cascade tripping.
AEMO?s review found that system security risks can arise when high levels of power transfer out of SA coincide with periods when the available OFGS capacity is insufficient to manage potential over-frequency conditions for a non-credible trip of the Heywood interconnector. As such a system normal constraint is required to manage the combined SA export capacity under such conditions, so as to maintain SA power system operations within the limits advised by ElectraNet.
The following constraint equation was implemented at 1425hrs 15 December 2025:
S_V_HEYWOOD_OFGS
Ben Blake
AEMO Operations
131523RESERVE NOTICE09/12/2025 11:10:09 AM
PDPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 09/12/2025
AEMO ELECTRICITY MARKET NOTICE
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 131510 is cancelled at 1110 hrs 09/12/2025.
Manager NEM Real Time Operations
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 131510 is cancelled at 1110 hrs 09/12/2025.
Manager NEM Real Time Operations
131510RESERVE NOTICE08/12/2025 01:21:15 PM
PDPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 09/12/2025
AEMO ELECTRICITY MARKET NOTICE
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following Period:
[1.] From 1730 hrs 09/12/2025 to 1830 hrs 09/12/2025.
The forecast capacity reserve requirement is 1400 MW.
The minimum capacity reserve available is 1225 MW.
Manager NEM Real Time Operations
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following Period:
[1.] From 1730 hrs 09/12/2025 to 1830 hrs 09/12/2025.
The forecast capacity reserve requirement is 1400 MW.
The minimum capacity reserve available is 1225 MW.
Manager NEM Real Time Operations
131476RESERVE NOTICE07/12/2025 02:27:34 PM
STPASA - Update of the Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 09/12/2025
AEMO ELECTRICITY MARKET NOTICE
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 131447 has been updated to the following:
[1.] From 1700 hrs 09/12/2025 to 1830 hrs 09/12/2025.
The forecast capacity reserve requirement is 1400 MW.
The minimum capacity reserve available is 1287 MW.
Manager NEM Real Time Operations
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 131447 has been updated to the following:
[1.] From 1700 hrs 09/12/2025 to 1830 hrs 09/12/2025.
The forecast capacity reserve requirement is 1400 MW.
The minimum capacity reserve available is 1287 MW.
Manager NEM Real Time Operations
131448RESERVE NOTICE06/12/2025 03:47:37 PM
PDPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 06/12/2025
AEMO ELECTRICITY MARKET NOTICE
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 131443 is cancelled at 1540 hrs 06/12/2025.
Manager NEM Real Time Operations
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 131443 is cancelled at 1540 hrs 06/12/2025.
Manager NEM Real Time Operations