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Home > Electricity > Performance - Investigations and Reviews
Performance - Investigations and Reviews

From time to time specific aspects of industry performance are reviewed by the Office to ensure customer interests are maintained in all areas.

Recent Reviews and Investigations

Windstorm – 15 April 2009
The Regulator received an application from Aurora Energy seeking an exemption from its obligation to pay Single Outage Duration Guaranteed Service Level Payments (SOD GSL Payments) arising from interruptions to the Aurora Energy Distribution Network caused by the windstorm which crossed Tasmania on 15 April 2009.

The Regulator published his Determination that the interruptions to the Aurora distribution network caused by the windstorm do not qualify as a "rare event" hence are not an "exempted outage" under clause 3.1.3 of the Guaranteed Service Level Scheme Guideline.

Accordingly, Aurora Energy was required to pay SOD GSL Payments to eligible customers who were affected by the interruptions to electricity supply caused by the windstorm of 15 April 2009.

Windstorm – 22 January 2009
The Regulator received an application from Aurora Energy seeking an exemption from its obligation to pay Single Outage Duration Guaranteed Service Level Payments (SOD GSL Payments) arising from interruptions to the Aurora Energy Distribution Network caused by the windstorm which crossed Tasmania on 22 January 2009.

The Regulator published his Determination that the interruptions to the Aurora distribution network caused by the windstorm did not qualify as a "rare event" hence not an "exempted outage" under clause 3.1.3 of the Guaranteed Service Level Scheme Guideline.

Accordingly, Aurora Energy was required to pay SOD GSL Payments to eligible customers who were affected by the interruptions to electricity supply caused by the windstorm of 22 January 2009.

Aurora Energy responded to the Regulator's final decision.


Wind storms – 2 and 3 April 2008
The Regulator received an application from Aurora Energy seeking an exemption from its obligation to pay Single Outage Duration Guaranteed Service Level Payments (SOD GSL Payments) arising from interruptions to the Aurora Energy Distribution Network caused by wind storms which crossed Tasmania on 2 and 3 of April 2008. The Regulator also sought and received a full report into the notifiable incident from Aurora Energy.

The Regulator published his Determination that the interruptions to the Aurora distribution network caused by the severe storms qualified as a "rare event" as they were widespread and caused outages of a scale that, in the opinion of the Regulator, the distributor is not able to reasonably mitigate against. The Regulator determined that the outages were to be included as "exempted outages" under clause 3.1.3 of the Guaranteed Service Level Scheme Guideline.

The Regulator noted that 67 148 customers were affected, and costs attributable to the incident incurred by Aurora totalled $929 424 as at 7 May 2008. 4031 customers would have qualified for a SOD GSL Payment if this incident were not classified as a "rare event". Aurora would have incurred an additional net cost of $162 300 in GSL Payments if the exemption had not been approved.

Compliance Review

In March 2008, the Regulator completed a review of Aurora Energy’s compliance with the Tasmanian Electricity Code relating to electromagnetic interference and complaint handling. In light of further information received by the Regulator, the Regulator reviewed his findings in July 2008.

The Revised Statement of Findings may be viewed here.
The March 2008 Statement of Findings may be viewed here.


Past Reviews and Investigations

The Regulator approved distribution loss factors applicable to Tasmania for 2007-08 pursuant to National Electricity Rules. The following paper reflects the Regulator's decision.

Approval of Distribution Loss Factors for Electricity Consumers for 2007-08

Related Documents:

Review of application of methodology by ACIL Tasman
Submission of distribution loss factors by Aurora Energy for approval




Approval of Distribution Loss Factors for Electricity Consumers for 2006-07

      Related Documents:



Approval of Distribution Loss Factors for Electricity Consumers for 2005-06

      Related Documents:


Aurora Feeder Performance

Vegetation Management Consultation Paper

System Controller Direction - Arm Southern SPS - October 2003

System Controller Direction - Return Bastyan Power Station to Service - 30 June 2003

Regulator's Review of the use of the System Controller's Power to issue directions - Gordon Power Outage - August to October 2002

System Controller Direction - Arm Southern SPS - August 2002

System Controller Direction - Return Poatina Power Station to Service - 19 July 2002










This page was last updated on 06 April 2014 by the Office of the Tasmanian Economic Regulator (OTTER). Questions concerning its content can be sent by mail to GPO Box 770, Hobart, TAS, Australia 7001 or by email to office@economicregulator.tas.gov.au or by telephone to (03) 6166 4422.

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