Stanwell Corporation Limited & Diamantina Power Station Pty Ltd


Stanwell Corporation Limited and Diamantina Power Station Pty Ltd (the applicants) are seeking reauthorisation of the technical and operational arrangements related to the operation of the North West Power System (NWPS). Specifically, the parties are seeking authorisation to agree to rules related to the coordination of dispatch of generators, and demand management and load shedding of certain electricity consumers within the NWPS (the Dispatch Protocol). The NWPS is an isolated electricity generation and transmission network based in Mt Isa and is not connected to the national grid.

The Dispatch Protocol was previously conditionally authorised on 29 January 2015. The condition imposed on the authorisation requires the applicants to notify the ACCC in writing of any amendment to the Dispatch Protocol or schedules to the Dispatch Protocol within 10 days of the amendment being made, with the exception of amendments made to Schedule 5 – Forecast Data Format or Schedule 6 – Key Contact Details. The applicants are also seeking to extend the exception to this condition to apply to additional Schedules.

The Applicants are seeking reauthorisation because the existing authorisation is due to expire on 20 February 2020. Authorisation is sought for 10 years.

The ACCC is currently undertaking public consultation on this application for authorisation. Submission are due by 8 November 2019. Further information on the application and on how to provide a submission to the ACCC can be found in the documents below.

The ACCC will progress its assessment of the application in a timely manner. An indicative timetable is set out below for your information.

4 October 2019

Lodgement of application and supporting submission.

22 October 2019

Public consultation process begins.

8 November 2019

Closing date for submissions from interested parties.

15 November 2019

Applicants respond to any issues raised in the public consultation process.

December 2019

Draft determination.

January/February 2020

Public consultation on draft determination including any conference if called.

February 2020

Final determination.


  • Diamantina Power Station Pty Ltd
  • Stanwell Corporation Limited

Authorisation number(s)

  • AA1000454-1


Document title Date


ACCC correspondence