Upcoming high-impact outages in the NEM (information as of 25/05/2020 0957 hrs): Newly added outage Update(s) since the last notification Region NSP Start Finish Network asset Impact Recall time Market notice Constraint Outage reason This outage has been WITHDRAWN. 25/05/2020 07:00 30/05/2020 16:00 Muswellbrook - Tamworth (88) 330 A credible contingency event during this planned outage could cause: Day: 4 hrs NSW Transgrid Not required Invoked Maintenance Monday Saturday kV Line • Synchronous separation of the Queensland region from the rest of Night: 4 hrs the NEM A credible contingency event during this planned outage could leave South Australia connected to the NEM only via the South Australian 132 kV network. To maintain system security following this contingency AEMO will need to: 25/05/2020 09:30 25/05/2020 16:30 Day: 8 hrs Issued on SA ElectraNet Tailem Bend - Tungkillo 275 kV Line • Initiate the orderly separation of SA from the rest of the NEM. Invoked Maintenance Monday Monday Night: Not applicable 21/05/2020 • Source increased local regulation FCAS within SA. During this planned outage power transfer will be restricted across the Victoria - South Australia interconnector (Heywood interconnector). This is a high-impact outage only if the forecast temperature at Red Cliffs is greater than 30 °C During this planned outage power transfer will be restricted 25/05/2020 14:00 25/05/2020 19:00 • Between Victoria and New South Wales. Day: 2 hrs Being NSW Transgrid Balranald Buronga X3 220kV LINE Not required Maintenance Monday Monday • Between South Australia and Victoria on Murraylink Night: No recall assessed A credible contingency event during this planned outage may require: • Load shedding in the Victorian outer grid • Market intervention through issuing of directions. This is a high-impact outage only if the forecast temperature at Red Cliffs is greater than 30 °C During this planned outage power transfer will be restricted 25/05/2020 14:00 25/05/2020 19:00 Balranald-Darlington Point (X5) 220 • Between Victoria and New South Wales. Day: 1.5 hrs Being NSW Transgrid Not required Maintenance Monday Monday kV line • Between South Australia and Victoria on Murraylink Night: No recall assessed A credible contingency event during this planned outage may require: • Load shedding in the Victorian outer grid • Market intervention through issuing of directions. A credible contingency event during this planned outage could cause: 26/05/2020 06:00 26/05/2020 18:00 Muswellbrook - Tamworth (88) 330 Day: 4 hrs Being NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Maintenance Tuesday Tuesday kV Line Night: No recall assessed the NEM 1 / 11 Upcoming high-impact outages in the NEM (information as of 25/05/2020 0957 hrs): Newly added outage Update(s) since the last notification Region NSP Start Finish Network asset Impact Recall time Market notice Constraint Outage reason A credible contingency event during this planned outage could cause: 27/05/2020 06:00 27/05/2020 18:00 Muswellbrook - Tamworth (88) 330 Day: 4 hrs Being NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Maintenance Wednesday Wednesday kV Line Night: No recall assessed the NEM A credible contingency event during this planned outage could cause: 28/05/2020 06:00 28/05/2020 18:00 Tamworth Liddell PS (84) 330 kV Day: 4 hrs NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Invoked Maintenance Thursday Thursday Line Night: No recall the NEM A credible contingency event during this planned outage could cause: 29/05/2020 06:00 29/05/2020 18:00 Tamworth Liddell PS (84) 330 kV Day: 4 hrs NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Invoked Maintenance Friday Friday Line Night: No recall the NEM A credible contingency event during this planned outage could cause: 30/05/2020 06:00 30/05/2020 18:00 Tamworth Liddell PS (84) 330 kV Day: 4 hrs NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Invoked Maintenance Saturday Saturday Line Night: No recall the NEM A credible contingency event during this planned outage could cause: 01/06/2020 06:00 01/06/2020 18:00 Tamworth Liddell PS (84) 330 kV Day: 4 hrs NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Invoked Maintenance Monday Monday Line Night: No recall the NEM This outage has been WITHDRAWN. 01/06/2020 07:00 06/06/2020 16:00 Muswellbrook - Tamworth (88) 330 A credible contingency event during this planned outage could cause: Day: 4 hrs NSW Transgrid Not required Invoked Maintenance Monday Saturday kV Line • Synchronous separation of the Queensland region from the rest of Night: 4 hrs the NEM This is a high impact outage because the recall time is greater than 30 01/06/2020 08:30 01/06/2020 16:00 Strathmore - Ross (8858) 275 kV minutes. Day: 30 mins QLD Powerlink Not required Invoked Maintenance Monday Monday Line A credible contingency event during this planned outage may require Night: Not applicable market intervention through issuing of directions. A credible contingency event during this planned outage could cause: 02/06/2020 06:00 02/06/2020 18:00 Tamworth Liddell PS (84) 330 kV Day: 4 hrs NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Invoked Maintenance Tuesday Tuesday Line Night: No recall the NEM A credible contingency event during this planned outage could cause: 03/06/2020 06:00 03/06/2020 18:00 Tamworth Liddell PS (84) 330 kV Day: 4 hrs NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Invoked Maintenance Wednesday Wednesday Line Night: No recall the NEM 2 / 11 Upcoming high-impact outages in the NEM (information as of 25/05/2020 0957 hrs): Newly added outage Update(s) since the last notification Region NSP Start Finish Network asset Impact Recall time Market notice Constraint Outage reason A credible contingency event during this planned outage could cause: 04/06/2020 06:00 04/06/2020 18:00 Tamworth Liddell PS (84) 330 kV Day: 4 hrs Being NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Maintenance Thursday Thursday Line Night: No recall assessed the NEM A credible contingency event during this planned outage could cause: 05/06/2020 06:00 05/06/2020 18:00 Tamworth Liddell PS (84) 330 kV Day: 4 hrs Being NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Maintenance Friday Friday Line Night: No recall assessed the NEM A credible contingency event during this planned outage could cause: 06/06/2020 06:00 06/06/2020 18:00 Tamworth Liddell PS (84) 330 kV Day: 4 hrs Being NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Maintenance Saturday Saturday Line Night: No recall assessed the NEM A credible contingency event during this planned outage could cause: 09/06/2020 06:00 09/06/2020 18:00 Tamworth Liddell PS (84) 330 kV Day: 4 hrs Being NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Maintenance Tuesday Tuesday Line Night: No recall assessed the NEM This outage has been WITHDRAWN. 09/06/2020 07:00 13/06/2020 16:00 Muswellbrook - Tamworth (88) 330 A credible contingency event during this planned outage could cause: Day: 4 hrs NSW Transgrid Not required Invoked Maintenance Tuesday Saturday kV Line • Synchronous separation of the Queensland region from the rest of Night: 4 hrs the NEM A credible contingency event during this planned outage could cause: 10/06/2020 06:00 10/06/2020 18:00 Tamworth Liddell PS (84) 330 kV Day: 4 hrs Being NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Project work Wednesday Wednesday Line Night: No recall assessed the NEM A credible contingency event during this planned outage could cause: 11/06/2020 06:00 11/06/2020 18:00 Tamworth Liddell PS (84) 330 kV Day: 4 hrs Being NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Project work Thursday Thursday Line Night: No recall assessed the NEM This is a high impact outage only if the Forecast Operational Demand in Victoria region is greater than 7,000 MW 11/06/2020 07:30 11/06/2020 16:00 A credible contingency event during this planned outage could: Day: Not applicable VIC AusNet Keilor – Sydenham 500 kV Line Not required Invoked Maintenance Thursday Thursday • Cause a large reduction in generation in Victoria Night: Not applicable • Restrict power transfer across the Victoria - South Australia interconnector (Heywood interconnector). A credible contingency event during this planned outage could cause: 12/06/2020 06:00 12/06/2020 18:00 Tamworth Liddell PS (84) 330 kV Day: 4 hrs NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Invoked Maintenance Friday Friday Line Night: No recall the NEM 3 / 11 Upcoming high-impact outages in the NEM (information as of 25/05/2020 0957 hrs): Newly added outage Update(s) since the last notification Region NSP Start Finish Network asset Impact Recall time Market notice Constraint Outage reason A credible contingency event during this planned outage could cause: 13/06/2020 06:00 13/06/2020 18:00 Tamworth Liddell PS (84) 330 kV Day: 4 hrs NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Invoked Project work Saturday Saturday Line Night: No recall the NEM A credible contingency event during this planned outage could cause: 15/06/2020 06:00 15/06/2020 18:00 Tamworth Liddell PS (84) 330 kV Day: 4 hrs Being NSW Transgrid • Synchronous separation of the Queensland region from the rest of Not required Project work Monday Monday Line Night: No recall assessed the NEM This outage has been WITHDRAWN.