Market Notices

81930GENERAL NOTICE06/01/2021 11:50:05 AM

NEM Local Temperature Alerts for SA from 06 Jan 2021 to 10 Jan 2021

AEMO ELECTRICITY MARKET NOTICE

AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.

SA
Port Augusta Ap (39+ Deg C): 10th Jan

The NEM Local Temperature Alert Levels are:

Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.

AEMO requests Market Participants to:

1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,

2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.

Further information is available at:

https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts

AEMO Operations Planning
     
81890GENERAL NOTICE05/01/2021 10:04:36 AM

Reduction in load relief in Tasmanian region - 6th January 2021

AEMO ELECTRICITY MARKET NOTICE

Further to MN 80127 and 81536, on 6th January at 1000hrs AEMO will reduce the load relief used to determine FCAS requirements from 0.8% to 0.7% for the Tasmanian region. This will increase the amount of contingency FCAS enabled by AEMO in the Tasmanian region.

This change is a part of AEMO's review of frequency in the NEM. The Tasmanian load relief will be slowly reduced by 0.1% on a fortnightly basis from the current 1.0%. Details were provided to market participants in an industry teleconference on 4th December 2020. For more information refer to: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/ancillary-services/load-relief

There will be no change at this stage to the Mainland load relief.

The next change is planned for 20th January 2021.

Ben Blake
AEMO Operations
     
81865GENERAL NOTICE04/01/2021 06:41:23 AM

Planned outage of Moorabool - Mortlake 500 kV line in the Victoria region from 30 January to 6 February 2021

AEMO ELECTRICITY MARKET NOTICE


The Moorabool - Mortlake 500 kV line in the Victoria (VIC) region is planned to be out of service from 30 January 0500hrs to 6 February 2021 1730 hrs.

A credible contingency event during this planned outage could cause synchronous separation of the South Australia (SA) region from the rest of the NEM. If separation occurs, load may be interrupted due to the operation of the Automatic Under Frequency Load Shedding (AUFLS) scheme in SA.

The credible separation contingency is managed as follows:

- When power transfer is from SA to Victoria, contingency lower FCAS will be sourced from SA.
- When power transfer is from Victoria to SA, due to the 47-52Hz island separation frequency band advised by the SA jurisdiction, contingency raise FCAS is not sourced in SA and the AUFLS scheme may respond to low frequency events.
- Power transfer will be restricted on Victoria - South Australia interconnector (Heywood interconnector) to manage system security following the loss of the next contingency.

Forecast capacity reserves in the SA region are currently sufficient to meet electricity demand during the planned outage.

The following constraint sets have been invoked for this outage:

S-X_BC_CP
V-MLMO

Refer to AEMO Network Outage Schedule (NOS) for further details.

Diyoni Hoole
AEMO Operations
     
81784GENERAL NOTICE01/01/2021 01:37:02 PM

Incident impacting pre-dispatch demand forecast performance 01/01/2021

AEMO ELECTRICITY MARKET NOTICE

An incorrect input into the Demand Forecasting System from 01/01/2021 0030hrs to 1130hrs caused a reduction in near-term pre-dispatch demand forecast accuracy for all NEM Regions. There was no impact to dispatch forecasts.
The demand forecasts were corrected as of 1130hrs 01/01/2021 and accuracy has returned to within typical performance levels.

Manager Operational Forecasting
     
81599GENERAL NOTICE24/12/2020 11:22:18 AM

Report on Estimated Reserve Payments and Volumes from 17 December 2020 Activation

AEMO ELECTRICITY MARKET NOTICE

On 17 December 2020, AEMO activated reserves in NSW due to a forecast Lack of Reserve Condition 2 as part of the Reliability and Emergency Reserve Trader (RERT) function.

As required by clause 3.20.6 (a) of the National Electricity Rules, AEMO has published a report containing the estimated payments and volumes of the activated reserves. Actual payments and volumes activated will be published in AEMO's quarterly RERT report due in February 2021.

The report is available on the AEMO website at: https://aemo.com.au/en/energy-systems/electricity/emergency-management/reliability-and-emergency-reserve-trader-rert/rert-reporting

Group Manager Systems Capability
81598GENERAL NOTICE24/12/2020 10:59:25 AM

NEM Local Temperature Alerts for SA, VIC from 24 Dec 2020 to 28 Dec 2020

AEMO ELECTRICITY MARKET NOTICE

AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.

SA
Port Augusta Ap (39+ Deg C): 26th Dec, 27th Dec

VIC
Mildura Ap (39+ Deg C): 27th Dec

The NEM Local Temperature Alert Levels are:

Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.

AEMO requests Market Participants to:

1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,

2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.

Further information is available at:

https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts

AEMO Operations Planning
81579GENERAL NOTICE23/12/2020 10:28:12 AM

NEM Local Temperature Alerts for SA, VIC from 23 Dec 2020 to 27 Dec 2020

AEMO ELECTRICITY MARKET NOTICE

AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.

SA
Port Augusta Ap (39+ Deg C): 26th Dec, 27th Dec

VIC
Mildura Ap (39+ Deg C): 27th Dec

The NEM Local Temperature Alert Levels are:

Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.

AEMO requests Market Participants to:

1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,

2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.

Further information is available at:

https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts

AEMO Operations Planning
81554GENERAL NOTICE22/12/2020 10:51:19 AM

NEM Local Temperature Alerts for SA from 22 Dec 2020 to 26 Dec 2020

AEMO ELECTRICITY MARKET NOTICE

AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.

SA
Port Augusta Ap (39+ Deg C): 26th Dec

The NEM Local Temperature Alert Levels are:

Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.

AEMO requests Market Participants to:

1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,

2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.

Further information is available at:

https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts

AEMO Operations Planning
81536GENERAL NOTICE21/12/2020 11:12:34 AM

Reduction in load relief in Tasmanian region - 23rd December 2020

AEMO ELECTRICITY MARKET NOTICE

Further to MN 80127 and 80874, on 23rd December at 1000hrs AEMO will reduce the load relief used to determine FCAS requirements from 0.9% to 0.8% for the Tasmanian region. This will increase the amount of contingency FCAS enabled by AEMO in the Tasmanian region.

This change is a part of AEMO's review of frequency in the NEM. The Tasmanian load relief will be slowly reduced by 0.1% on a fortnightly basis from the current 1.0%. Details were provided to market participants in an industry teleconference on 4th December 2020. For more information refer to: https://www.aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/ancillary-services/load-relief

There will be no change at this stage to the Mainland load relief.

The next change is planned for 6th January 2021.

Ben Blake
AEMO Operations
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