Non-Reliable Notices are issued based on generation shortfall in meeting the forecasted demand and also the inability to maintain sufficient responsive supply reserves to meet credible contingency events.
In reference to clauses 3.7.1 and 3.7.2 of the System Control Technical Code, System Control issues Non-Reliable Notices to meet its obligation to notify participants of the estimated period of the Lack of Stand-by generation, the estimated generation shortfall value, and its estimated time of occurrence, at the time the declaration is made.
Table 1 below summarises active Non-Reliable Notices, which affect system participants in the Darwin-Katherine, Tennant Creek, and Alice Springs Power Systems.
Table 2 below summarises historical Non-Reliable Notices that have either expired or been cancelled based on the forecasted demand and the available generation.
The following terminology has been used:
Note: A declaration of LOS2 automatically indicates an LOS1 situation, while a declaration of LOS3 automatically indicates both LOS1 and LOS2 situations. This is not applicable for ASPS as only LOS2 and LOS3 situations applies.
For more information on the information presented below please Contact SCOperationsPlanning.PWC@powerwater.com.au.
Table 1: Active Non-Reliable Notices
| Region | NRN ID | Commencement Date and Time | Anticipated End Date and Time | LOS Condition | NRN Description |
|---|---|---|---|---|---|
Table 2: Historical Non-Reliable Notices
| Region | NRN ID | Commencement Date and Time | Anticipated End Date and Time | LOS Condition | NRN Description |
|---|---|---|---|---|---|
| Darwin-Katherine | 2503074 | 17/03/2025 | 17/03/2025 | LOS2 | As a result of forced outages, planned generation maintenance, and restricted generation output, a Non-Reliable Notice was in effect on 17/03/2025, approximately between the hours of 15:30 to 20:00 in the DKIS. |
| Alice Springs | 2503039 | 10/03/2025 | 14/03/2025 | LOS2 | As a result of forced outages and restricted generation output, a Non-Reliable Notice will be in effect from 10/03/2025 to 14/03/2025, approximately between the hours of 15:00 and 19:30 in the Alice Spring Power System (ASPS). |
| Darwin-Katherine | 2503051 | 12/03/2025 | 13/03/2025 | LOS2 | As a result of forced outages and planned outage, a Non-Reliable Notice will be in effect from 12/03/2025 to 13/03/2025, approximately between the hours of 17:00 and 19:30 in the Darwin - Katherine Power System (DKPS) |
| Darwin-Katherine | 2503022 | 05/03/2025 | 06/03/2025 | LOS2 | As a result of forced outages and planned outage, a Non-Reliable Notice will be in effect from 05/03/2025 to 06/03/2025, approximately between the hours of 14:30 and 21:00 in the Darwin - Katherine Power System (DKPS) |
| Alice Springs | 2503005 | 03/03/2025 | 04/03/2025 | LOS2 | As a result of forced outages and restricted generation output, a Non-Reliable Notice will be in effect from 03/03/2025 to 04/03/2025, approximately between the hours of 14:00 and 21:00 in the Alice Spring Power System (ASPS). |
| Alice Springs | 2502086 | 13/02/2025 | 13/02/2025 | LOS2 | As a result of forced outages, planned generation maintenance, and restricted generation output, a Non-Reliable Notice will be in effect on 13/02/2025 between the hours of 15:30 to 20:30 in the Alice Spring Power System (ASPS). |
| Alice Springs | 2502050 | 10/02/2025 | 12/02/2025 | LOS2 | As a result of forced outages, planned generation maintenance, and restricted generation output, a Non-Reliable Notice will be in effect from 10/02/2025 to 12/02/2025 between the hours of 13:30 to 20:30 in the Alice Spring Power System (ASPS). |
| Alice Springs | 2502045 | 07/02/2025 | 09/02/2025 | LOS2 | As a result of forced outages, planned generation maintenance, and restricted generation output, a Non-Reliable Notice will be in effect from 07/02/2025 to 09/02/2025 between the hours of 16:00 to 19:00 in the Alice Spring Power System (ASPS). |
| Alice Springs | 2501120 | 31/01/2025 | 02/02/2025 | LOS2 | As a result of forced outages and restricted generation output, a Non-Reliable Notice will be in effect from 31/01/2025 to 02/02/2025 between the hours of 13:30 to 22:00 in the Alice Spring Power System (ASPS). |
| Alice Springs | 2501106 | 28/01/2025 | 29/01/2025 | LOS2 | As a result of forced outages and restricted generation output, a Non-Reliable Notice will be in effect on 28/01/2025 and 29/01/2025 between the hours of 14:00 to 20:00 in the Alice Spring Power System (ASPS). |
| Alice Springs | 2501045 | 14/01/2025 | 14/01/2025 | LOS2 | As a result of forced outages, planned generation maintenance, and restricted generation output, a Non-Reliable Notice will be in effect on 14/01/2025 between the hours of 16:00 to 20:00 in the Alice Spring Power System (ASPS). |
| Darwin-Katherine | 2412030 | 11/12/2024 | 11/12/2024 | LOS2 | As a result of forced outages, planned generation maintenance, and restricted generation output, a Non-Reliable Notice was in effect on 11/12/2024, approximately between the hours of 16:00 to 21:00 in the DKIS. |
| Darwin-Katherine | 2409079 - V2 | 01/10/2024 | 02/10/2024 | LOS2 | As a result of forced outages, planned generation maintenance, and restricted generation output, a Non-Reliable Notice was in effect from 01/10/2024 to 02/10/2024, approximately between the hours of 15:30 to 21:00 in the DKIS. |
| Darwin-Katherine | 2409079 - V1 | 30/09/2024 | 01/10/2024 | LOS1 | As a result of forced outages, planned generation maintenance, and restricted generation output, a Non-Reliable Notice was in effect from 30/09/2024 to 01/10/2024, approximately between the hours of 17:00 to 20:00 in the DKIS. |
| Darwin-Katherine | 2408119 | 29/08/2024 | 30/08/2024 | LOS1 | As a result of forced outages, planned generation maintenance, and restricted generation output, a Non-Reliable Notice was in effect from 29/08/2024 to 30/08/2024, approximately between the hours of 16:30 to 21:00 in the DKIS. |
