AEMO Procedure Change Proposals

View all current AEMO WEM Procedures

AEMO procedure changes under consultation 

ID Date Submitted Title Next Step Closing Date

AEPC_2024_17

21/11/2024

Outage Intention Plans

Consultation closure

19/12/2024  

AEPC_2024_16

6/11/2024

Minimum Eligibility Requirements for Flexible CRC

Consultation closure

04/12/2024  

AEPC_2024_13

31/10/2024

Dispatch Algorithm Formulation

Consultation closure

28/11/2024

AEPC_2024_15

31/10/2024

Determination of Market Schedules

Consultation closure

28/11/2024

AEPC_2024_12

30/10/2024

Real-Time Market Suspension

Consultation closure

28/11/2024

AEPC_2024_14

24/10/2024

Reliability Standard Implementation

Consultation closure

22/11/2024

AEMO procedure change proposals that have been withdrawn or rejected

Dates in italics are indicative only and subject to change.

ID Date Submitted Title Next Step Date

AEPC_2020_01

02/04/2020

Revisions to BMO tie-break methodology

Rejected

30/04/2021

 

AEMO procedure changes that have commenced 

ID Date Submitted Title Next Step Date

AEPC_2024_11

23/09/2024

GPS Compliance Tests and Generator Monitoring Plans

Commenced

29/10/2024

AEPC_2024_08 

09/08/2024

Dispatch Compliance 

Commenced 

15/10/2024

AEPC_2024_09

11/09/2024

Direction of Registered Facilities in Scarcity Conditions

Commenced

15/10/2024

AEPC_2024_10

26/08/2024

Reserve Capacity Testing

Commenced

01/10/2024

AEPC_2024_07

26/08/2024

Network Access Quantity

Commenced

30/09/2024

AEPC_2024_06

09/09/2024

Supplementary Capacity

Commenced

10/09/2024

AEPC_2024_05

22/05/2024

Mid Peak Electric Storage Resource Obligation Intervals

Commenced

01/07/2024

AEPC_2024_04

02/05/2024

RCM Constraint Formulation

Commenced

13/06/2024

AEPC_2024_03

01/05/2024 

Long Term Projected Assessment of System Adequacy

Commenced

13/06/2024

AEPC_2024_01

28/03/2024

Supplementary Capacity v6.0

Commenced

01/04/2023

AEPC_2024_02

28/02/2024

Certification of Reserve Capacity

Consultation

12/04/2024

AEPC_2023_03

26/10/2023

Dispatch Algorithm Formulation Updates

Commenced

12/12/2023

AEPC_2023_02

20/06/23

Reserve Capacity Security v7.0

Commenced

02/10/2023

AEPC_2022_02

12/12/2022

Distributed Energy Resource (DER) Register Information

Commenced

02/10/2023

AEPC_2023_02

20/06/23

Reserve Capacity Security v6.0

Commenced

18/08/2023

AEPC_2023_01

30/06/23

Supplementary Capacity

Commenced

01/07/2023 

AEPC_2022_01

11/11/2022

Certification of Reserve Capacity for the 2022 and 2023 Reserve Capacity Cycle

Commenced

20/12/2022 

AEPC_2021_04

17/12/2021

Market Procedure: Prudential Requirements

Commenced

28/2/2021

AEPC_2021_01

27/7/2021

Reserve Capacity Testing

Commenced

1/10/2021

AEPC_2021_02

9/8/2021

Capacity Credit Allocation

Commenced

16/9/2021

AEPC_2021_03

9/8/2021

Settlement

Commenced

16/9/2021

AEPC_2020_03

21/01/2021

Facility Registration, De-registration and Transfer

Commenced

19/03/2021

AEPC_2020_07

21/01/2021

Settlement

Commenced

19/03/2021

AEPC_2020_10

21/08/2020

Declaration of Bilateral Trades and the Reserve Capacity Auction 

Commenced

16/10/2020

AEPC_2020_06

10/06/2020 

Reduction of Prudential Exposure (Phase 2)

Commenced

24/08/2020

 AEPC_2020_04

19/05/2020 

Market Procedure: Reserve Capacity Testing

Commenced

01/08/2020

 N/A

 01/07/2020

DER register information procedure

Commenced 

01/07/2020 

AEPC_2020_05

18/05/2020

Market Procedure: Reserve Capacity Security

Commenced

01/07/2020

AEPC_2020_02

12/03/2019

Market Procedure: Certification of Reserve Capacity

Commenced

15/06/2020

AEPC_2019_11

04/11/2019

Prudential Requirements - Credit Limit Calculation

Commenced

09/12/2019

AEPC_2019_10

16/12/2019

Facility Outages

Commenced

01/02/2020

AEPC_2019_09

9/08/2019

Formalisation of the Process for Maintenance Applications

Commenced

01/10/2019

AEPC_2018_03

20/04/2018

Communications and control systems

Commenced

01/07/2019

AEPC_2019_04

08/05/2019

Dispatch

Commenced

01/07/2019

AEPC_2019_06

08/05/2019

Removal of Resource Plans and Dispatchable Loads

Commenced

01/07/2019

AEPC_2019_07

01/05/2019

Ancillary Services

Commenced

01/07/2019

AEPC_2019_08

01/05/2019

Power System Security

Commenced

01/07/2019

AEPC_2018_05

20/04/2018

Market Procedure - IMS Interface

Commenced

01/07/2019

AEPC_2019_03

18/03/2019

Reduction of Prudential Exposure in the Reserve Capacity Mechanism

Commenced

27/06/2019

AEPC_2018_01

29/01/2018

Market Procedure - Monitoring and Reporting Protocol

Commenced

22/05/2019

AEPC_2019_01

22/02/2019

Short Term Projected Assessment of System Adequacy

Commenced

01/06/2019

AEPC_2019_02

22/02/2019

Medium Term Projected Assessment of System Adequacy

Commenced

01/06/2019

AEPC_2018_06

22/02/2019

Commissioning Tests

Commenced

01/06/2019

AEPC_2019_03

18/03/2019

Reduction of Prudential Exposure in the Reserve Capacity Mechanism

Commenced

01/05/2019 

AEPC_2018_04

15/10/2018

PSOP - Facility Outages

Commenced

07/01/2019

AEPC_2018_02

06/02/2018 

PSOP - Tolerance Ranges

Commenced 

21/04/2018

AEPC_2017_05

06/07/2017

Market Procedure - Individual Reserve Capacity Requirements

Commenced

03/11/2017

AEPC_2017_08

19/07/2017

PSOP - Network Modelling Data

Commenced

13/10/2017

AEPC_2017_07

19/07/2017

Market Procedure - IMS Interface

Commenced

13/10/2017

AEPC_2017_10

21/07/2017

PSOP - Dispatch

Commenced

01/10/2017

AEPC_2017_11

21/07/2017

Market Procedure - Notices and Communications

Commenced

01/10/2017

AEPC_2017_06

06/07/2017

Market Procedure - Undertaking the Long Term PASA and conducting a review of the planning criterion

Commenced

01/10/2017

AEPC_2017_09

06/07/2017

Market Procedure - Reserve Capacity Performance Monitoring

Commenced

01/10/2017

AEPC_2017_04

27/06/2017

Market Procedure - Certification of Reserve Capacity

Commenced

01/10/2017

AEPC_2017_03

02/06/2017

Market Procedure: Determination of DSM Dispatch Payment Tranches and Adjustments

Commenced

01/10/2017

PC_2017_01

23/03/2017 

Market Procedure: Determination of Expected DSM Dispatch Quantity and DSM Activation Price

Commenced

08/06/2017

PC_2017_02

03/04/2017

12 Market Procedures (see linked page)

Commenced

18/04/2017

IMO procedure changes up to 2015

Procedure Changes with consultation period closed

ID Date Submitted Title Submitter Next Step Date

PC_2012_11

18/06/2013

Changes to Market Procedure for Notices and Communications

IMO

Procedure Change Report Published

TBA

 

Procedure Changes that have Commenced

ID Date Submitted Title Submitter Next Step Date

PC_2008_01

17/04/2008

Market Procedure for Registration of Rule Participants

IMO

Commenced

12/06/2008

PC_2008_02

17/04/2008

Market Procedure for Facility Registration, Facility De-registration and Facility Transfer

IMO

Commenced

12/06/2008

PC_2008_03

17/04/2008

Market Procedure for Web Site Changes

IMO

Commenced

12/06/2008 

PC_2008_04

17/04/2008

Market Procedure for Certification of Reserve Capacity

IMO 

Commenced 

15/07/2008 

PC_2008_05

17/04/2008

Market Procedure for Declaration of Bilateral Trades and the Reserve Capacity Auction

IMO 

Commenced 

15/07/2008 

PC_2008_06 

01/08/2008

Market Procedure for Determination of the Maximum Reserve Capacity Price

 IMO

Commenced 

13/10/2008 

PC_2008_07

 01/08/2008

Market Procedure for Reserve Capacity Performance Monitoring

 IMO

 Commenced

15/10/2008

PC_2008_08

01/08/2008

Market Procedure for Prudential Requirements

IMO

Commenced

15/10/2008

PC_2008_10

01/08/2008

Market Procedure: Monitoring Protocol

IMO

Commenced

20/10/2008

PC_2008_11

01/08/2008

Market Procedure for Procurement of Network Control Service

IMO

Commenced

20/10/2008

PC_2008_12

16/10/2008

Market Procedure: Facility Registration, Facility De-registration and Facility Transfer

IMO

Commenced

26/11/2008

PC_2008_14

30/10/2008

Market Procedure for Determination of Maximum Reserve Capacity Price

IMO

Commenced

04/12/2008

PC_2008_15

27/10/2008

Market Procedure for Individual Reserve Capacity Requirements

IMO

Commenced

11/12/2008

PC_2008_16

15/12/2008

Notices and Communications

IMO

Commenced

20/01/2009

PC_2009_01

11/05/2009

Reserve Capacity Security

IMO

Commenced 

24/07/2009

PC_2009_02

04/08/2009

Market Procedure for Procedure Administration 

IMO

Commenced 

01/10/2009

PC_2009_03

11/05/2009

Market Procedure for Registration and De-registration of Rule Participants

IMO

Commenced 

24/07/2009

PC_2009_05

30/09/2009

Market Procedure for Declaration of Bilateral Trades and the Reserve Capacity Auction

IMO

Commenced

01/01/2010

PC_2009_08

04/08/2009

Market Procedure for Meter Data Submissions

IMO

Commenced 

01/10/2009

PC_2009_10

04/01/2010

Market Procedure for Reserve Capacity Testing (V3)

IMO

Commenced 

01/10/2010 

PC_2009_11

 04/01/2010

Market Procedure for Undertaking the LT PASA and conducting a Review of the Planning Criterion

IMO

Commenced 

01/06/2010 

PC_2009_12

20/11/2009

Market Procedure for the Determination of Maximum Reserve Capacity Price

IMO

Commenced

01/04/2010

PC_2010_01

30/08/2010

Changes to Market Procedure for Procedure Administration

IMO

Commenced

08/11/2010

PC_2010_02

30/08/2010

Changes to Market Procedure for Notices and Communications

IMO

Commenced

08/11/2010

PC_2010_04

09/08/2010

Market Procedure for the Determination of Maximum Reserve Capacity Price

IMO

Commenced

11/10/2010

PC_2010_05

15/11/2011

Changes to Market Procedure for Reserve Capacity Performance Monitoring

IMO

Commenced

18/04/2011

PC_2010_06

20/09/2010

Changes to Market Procedure for Certification of Reserve Capacity 

IMO

Commenced

15/12/2010 

PC_2010_07

15/11/2010

Changes to Market Procedure for Web Site Changes

IMO

Commenced

24/01/2011

PC_2010_08

22/11/2010

Changes to Market Procedure for Supplementary Reserve Capacity

IMO

Commenced

23/01/2012

PC_2011_01

28/03/2011

Revocation of Market Procedure for Procurement of Network Control Service

IMO

Commenced

01/07/2011

PC_2011_02

31/03/2011

Market Procedure for Data and IT Interface Requirements

IMO

Commenced

01/07/2011

PC_2011_03

06/04/2011

Transitional arrangements for the Registration of Demand Side Programmes and the association of Non-Dispatchable Loads (New Market Procedure)

IMO

Commenced

01/07/2011

PC_2011_05

05/08/2011

Market Procedure for Reserve Capacity Testing

IMO

Commenced

01/10/2011

PC_2011_06

06/09/2011

5-Yearly Review of the Methodology and Process for Determining the Maximum Reserve Capacity Price

IMO

Commenced

24/10/2011

PC_2011_07

1/11/2011

Changes to Market Procedure for Procedure Administration

IMO

Commenced

1/01/2012

PC_2012_01

18/01/2012

Changes to Market Procedure for Reserve Capacity Security

IMO

Commenced

02/04/2012

PC_2012_02

06/01/2012

New Market Procedure for Balancing Facility Requirements

IMO

Commenced

01/07/2012

PC_2012_03

06/01/2012

New Market Procedure for Balancing Market Forecasts

IMO

Commenced

01/07/2012

PC_2012_04

03/02/2012

New Market Procedure for IMS Interface

IMO

Commenced

01/07/2012

PC_2012_05

11/06/2012

Amendments to Market Procedure for Data and IT Interface

IMO

Commenced

13/08/2012

PC_2012_06

27/09/2012

Changes to Reserve Capacity Procedure for Declaration of Bilateral Trades and the Reserve Capacity Auction 

IMO

Commenced

25/02/2013

PC_2012_07

03/09/2012

Changes to Market Procedure for Certification of Reserve Capacity

IMO

Commenced

18/03/2013

PC_2012_08

12/11/2012

Amendments to Market Procedure for Maximum Reserve Capacity Price

IMO

Commenced

15/01/2013

PC_2012_09

15/03/2013

Changes to Market Procedure for Determining Loss Factors

IMO

Commenced

20/05/2013

PC_2012_10

05/11/2012

Amendments to Market Procedure for IMS Interface

IMO

Commenced

22/04/2013

PC_2013_02

02/07/2013

Changes to Market Procedure for Rule Participant Registration and De-Registration

IMO

Commenced

01/11/2013

PC_2013_03

02/07/2013

Changes to Market Procedure for Facility Registration, De-Registration and Transfer

IMO

Commenced

01/11/2013

PC_2013_04 

13/01/2014 

Changes to Market Procedure for Prudential Requirements 

IMO 

Commenced 

01/05/2014 

PC_2013_06

10/02/2014

Changes to Market Procedure for Certification for Reserve Capacity

IMO

Commenced

01/01/2015

PC_2013_07

21/11/2013

Amendments to Market Procedure for Settlement 

IMO 

Commenced

01/01/2014 

PC_2013_08 

30/08/2013 

Amendments to Market Procedure for IMS Interface 

IMO 

Commenced 

02/10/2013 

PC_2014_02 

14/02/2014 

Changes to Market Procedure for Bilateral Trade Declarations and Reserve Capacity Auction 

IMO 

Commenced 

16/04/2014 

PC_2013_05

14/07/2014 

Changes to Market Procedure for Reserve Capacity Security

IMO

Commenced 

19/01/2015

 

Procedure Change Proposals that have been Withdrawn or Rejected

ID Date submitted Title Submitter Next step Date

PC_2008_13

16/10/2008

Market Procedure for Individual Reserve Capacity Requirements

IMO

Withdrawn

27/10/2008

PC_2010_03

17/11/2010

Changes to Market Procedure for Monitoring Protocol

IMO

Withdrawn

24/11/2011

PC_2013_09

10/02/2014

Changes to Market Procedure for Reserve Capacity Performance Monitoring

IMO

Rejected

02/04/2015

System Management procedure changes up to 2015

Current Power System Operation Procedures can be found here

Procedure Change Proposals which have Commenced

ID Date submitted Title Submitter Next step Date

PPCL0001

11/02/2008

System Restart Overview

System Management

Commenced

01/04/2008

PPCL0002

6/11/2008

Power System Security

System Management

Commenced

01/02/2009

PPCL0003

14/01/2009

Facility Outages

System Management

Commenced

01/04/2009

PPCL0004

14/01/2009

Ancillary Services

System Management

Commenced

01/04/2009

PPCL0005

14/01/2009

MT PASA

System Management

Commenced

01/04/2009

PPCL0006

14/01/2009

ST PASA

System Management

Commenced

01/04/2009

PPCL0007

11/05/2009

Operational Data Points for Generating Plant

System Management

Commenced

01/08/2009

PPCL0008

11/05/2009

Operational Data Points for Non-Western Power Networks, Substations and Loads

System Management

Commenced 

01/08/2009 

PPCL0009

05/06/2009

Commissioning and Testing

System Management

Commenced

01/09/2009

PPCL0010

05/06/2009

Cleansing of Generation Facility MWh Output Data

System Management

Commenced

01/11/2009

PPCL0011

23/06/2009

Communications and Control Systems

System Management

Commenced

01/09/2009

PPCL0012

12/08/2009

Monitoring and Reporting

System Management

Commenced

01/10/2009

PPCL0013

18/08/2009

Dispatch

System Management

Commenced

01/03/2010

PPCL0014

27/11/2009

Dispatch

System Management

Commenced

01/03/2010

PPCL0015

13/01/2010 

Dispatch 

System Management 

Commenced 

01/04/2010 

PPCL0016

06/12/2010

Commissioning and Testing

System Management

Commenced

01/08/2011

PPCL0017

06/12/2010

Facility Outages

System Management

Commenced

01/08/2011

PPCL0018

03/03/2011

Dispatch

System Management

Commenced

01/08/2011

PPCL0019

03/03/2011

Monitoring and Reporting Protocol

System Management

Commenced

01/08/2011

PPCL0020

04/11/2011

Operational Data Points

System Management

Commenced

06/02/2012

PPCL0021

04/01/2012

Replaced PSOPs: Competitive Balancing and Load Following Market 1

System Management

Commenced

01/07/2012

PPCL0022

12/01/2012

Replaced PSOPs: Competitive Balancing and Load Following Market 2

System Management

Commenced

01/07/2012

PPCL0023

12/01/2012

Replaced PSOPs: Competitive Balancing and Load Following Market 3

System Management

Commenced

01/07/2012

PPCL0025

21/06/2013

Revised PSOP: Commissioning and Testing 

System Management

Commenced 

01/03/2014 

PPCL0026 

10/02/2014

Changes to PSOP: Facility Outages as a result of RC_2012_11: Transparency of Outage Information

System Management

Commenced

07/04/2014

PPCL0027

11/12/2013 

Revised PSOP: Dispatch 

System Management 

Commenced 

05/03/2014 

 

Procedure Change Proposals which have been Rejected

ID Date submitted Title Submitter Date of Decision

PPCL0024

14/03/2013

Revised PSOP: Monitoring and Reporting Protocol

System Management

01/08/2013

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