Gladstone Power Station Joint Venture


Rio Tinto is seeking minor variations under section 91A of the Competition and Consumer Act 2010 (the CCA) to authorisations A91205-A91207 which authorised a number of electricity supply agreements involving the Boyne Island aluminium smelter.  The minor variations are proposed to allow amendments to the relevant authorised agreements in response to the change to a five minute settlement period under the National Electricity Rules.

Further detail on the proposed minor variation is available under the Application heading below.

The ACCC is currently seeking submissions in relation to Rio Tinto‚Äôs request for minor variation by 8 October 2021.

A timetable is also set out below for your information.

Indicative date

Stage in assessment process

20 September 2021

Lodgement of application and supporting submission

28 September 2021

Public consultation process begins

8 October 2021

Closing date for submissions from interested parties

Late October 2021



  • GPS Power Pty Limited
  • GPS Energy Pty Limited
  • Sunshine State Power B.V
  • Sunshine State Power (No. 2) B.V
  • Rio Tinto Aluminium Limited
  • Ryowa II GPS Pty Limited
  • YKK GPS (Queensland) Pty Limited
  • Southern Cross GPS Pty Ltd

Authorisation number(s)

  • AA40211-4


Document title Date


Document title Date


Submissions - before draft decision

Submissions - after draft decision