Outages and commissioning

Rule Change RC_2013_15 commenced on Saturday, 1 February 2020. A high-level summary of key change impacts on Participants as a result of this Rule Change can be accessed here.

Equipment List

In accordance with clause 3.18.2(a) of the Wholesale Electricity Market Rules (WEM Rules), AEMO must compile and maintain a list of all equipment (Equipment List) in the South West Interconnected system (SWIS) that is required to be subject to outage scheduling.

Planned Outages

Under chapter 3 of the WEM Rules, AEMO must assess outage requests for Facilities or items of equipment that are on the Equipment List and following this assessment, approve or reject those outages accordingly.

To lodge these outage requests, Participants must use System Management’s Market Participant Interface (MPI) which can be accessed here. The user guide for the MPI:

For queries regarding the MPI, please contact System Management Operations on the phone number provided in your Market Operating Protocol(s).

To coordinate switching of the Western Power Network, information on access to the Western Power Network can be here.

AEMO is required to publish details of real-time and historical generator outages. These details can be accessed here.

For further information, refer to the Power System Operating Procedure: Facility Outages.

Forced Outages

Under section 3.21 of the WEM Rules, Participants must lodge Forced Outage information with AEMO as soon as practicable.
Participants may subsequently apply to AEMO to convert their Forced Outage to a Consequential Outage if the Participant believes that the

Forced Outage was as a result of either:

• A Forced Outage to another Participant's Facility or item of equipment.
• A Planned Outage to a Network Operator.

For further information, refer to the Power System Operating Procedure: Facility Outages.

Projected assessment of system adequacy (ST PASA and MT PASA)

The projected assessment of system adequacy (PASA) is a forecasting study undertaken by AEMO. It contains statistical load forecast information against projected available capacity figures (allowing for quantities of non-scheduled generation capacity based on historical figures).

AEMO publishes two versions of the PASA.

• Short term PASA is published by AEMO every Thursday and is a three-week in advance forecast.
• Medium term PASA is published by AEMO on the 15th day of every month and is a three year forecast.

Reports for both versions can be found in the here.

Commissioning tests

A Participant can conduct a Commissioning Test when commissioning a new Facility, or following significant maintenance of a Facility or item of equipment. When submitting a request to AEMO to conduct a Commissioning Test, Participants must include in their request a Commissioning Test Plan. The template for this plan can be accessed here.

For Commissioning Test Plans that include testing for compliance with the Technical Rules, Participants must also submit Commissioning Test Plans to the Network Operator for approval. For further information, refer to the Technical Rules, which can be accessed here.

Commissioning Test Plans

These documents are published in accordance with clause 10.5.1(zH) of the WEM Rules.

Commissioning Test plans submitted after January 2014 can be accessed here.

Commissioning test plans

These documents are published in accordance with clause 10.5.1(zH) of the WEM Rules.

Please note that for Commissioning Test plans that occur beyond January 2014, refer to our Market Data site.