Date First Published on the AEMO Website: 14 April 2016

Closing Date: 5:00 PM (AWST) on Friday, 27 May 2016

Current Status: The submission period closed on 27 May 2016.

Background: Clause 2.13.6G of the Wholesale Electricity Market Rules requires System Management to review the Tolerance Range and Facility Tolerance Ranges at least annually. The Tolerance Range or a Facility Tolerance Range is relevant for breach reporting purposes under clause 2.13.6B – System Management is not required to report an alleged breach of clause 3.21 or clause 7.10.1 if it is within the Tolerance Range or the Facility Tolerance Range. When conducting the annual review of the Tolerance Range and Facility Tolerance Ranges, System Management must consult with Rule Participants. 

System Management invites Rule Participants to make a submission on its 2016 review of the Tolerance Range and Facility Tolerance Range threshold. For further information regarding the annual review please refer to the 'System Management's invitation to provide submissions' document below. 

Submissions should be made by email to: market.development@westernpower.com.au

Documents relating to this consultation

The consultation period closed on 27 May 2016. No submissions were received. 

Tolerance Range to apply from 1 July 2016

The result of the 2016 Review of the Tolerance Range is set out above in the document 'Outcome of 2016 Annual Review of the Tolerance Range'. 

The Tolerance Range to apply to Scheduled Generators from 1 July 2016 will continue to be calculated with the following formula: 

Tolerance Range = (+/-) MAX (6, MIN [5% NPC, 4*ROC])

Where: 

NPC: Name plate capacity of the generator, expressed in MW (Market Rules Appendix 1(b)(ii))

 ROC: Rate of Change or Ramp Rate of a Unit per minute (Market Rules Appendix 1(b)(v))

See Tolerance Range page for further information.