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Regulatory test consultations

We're always working to identify limitations or constraints in our distribution network. When we propose to establish a new, large distribution asset to address a constraint, Registered Participants and Interested Parties are invited to offer alternative solutions that satisfy the Regulatory Investment Test for Distribution (RIT-D).

We analyse the different options and prepare a report or request for proposal. Our current consultation reports can be viewed below.

Further information about how we're managing the network can be found in our Distribution Annual Planning Report.

Our requirements under the National Electricity Rules

Under the National Electricity Rules, if we're proposing to establish a new, large distribution asset to address a constraint, then we're required to:

  • consult with Registered Participants, the Australian Energy Market Operator (AEMO) and Interested Parties on the anticipated limitation and options to address the constraint, within the time frame required for corrective action
  • carry out a detailed economic cost effectiveness analysis of options to identify solutions that satisfy the Regulatory Test
  • prepare a report for affected Registered Participants, the AEMO and Interested Parties which includes an assessment of all identified options, details of the preferred solution and the recommended action to be taken.

Register for information and alerts

When you register you'll receive periodic communications about our research and projects, including notification of upcoming RIT-D consultation opportunities.

Register now for project updates

Contact us

For any other enquiries and to find out more about our demand management programs please contact us at demandmanagement@ergon.com.au.

Current consultations

Click on an area below to view the current consultations.

Barcaldine, Blackall and Longreach

Report typeDescriptionDate issuedSubmission closes
Notice of No Non-Network Options
(PDF 331.5 kb)
Barcaldine 132/66/22kV Bulk Supply Substation (T072 BARC) is a bulk supply point for the Central West Region of Queensland, supplying Longreach and Blackall substations via 66kV feeders and the Barcaldine region via 22kV feeders.  T072 BARC supplies a total of 6323 customers and a maximum demand of 20MVA.  It’s 22kV bus supplies 2206 customers in Barcaldine with a maximum demand of 7MVA.  

T072 BARC has in recent years become the National Electricity Market (NEM) connection point for several utility scale solar farms: Dunblane 7.2MW, Barcaldine 20MW and Longreach 14MW.  These solar farms rely on the electrical infrastructure at T072 BARC to provide a reliable connection capacity to the National Electricity Market (NEM).  

A condition assessment of T072 BARC has identified assets that are recommended for replacement. These assets are forecast to reach retirement based on a combination of Condition Based Risk Management (CBRM) modelling and known issues with problematic plant, which are required to be replaced or decommissioned to manage the safety and network risks associated with unplanned failure.

The internal investigations undertaken on the feasibility of the non-network solutions revealed that it is unlikely to find a complete non-network solution or a hybrid (combined network and non-network) solution to provide the magnitude of network support required in the Central West Region of Queensland to address the identified need.

The preferred network option is to replace the assets in poor condition. This notice of no non-network options is therefore published in accordance with rule 5.17.4(d) of the National Electricity Rules. As the next step in the RIT-D process, Ergon Energy will now proceed to publish a Final Project Assessment Report.
30 Jun 2020

Cannonvale

Report typeDescriptionDate issuedSubmission closes
Final Project Assessment Report
(PDF 2.0 mb)

Ergon Energy has prepared this Final Project Assessment Report in accordance with the requirements of clause 5.17.4(o) of the National Electricity Rules (NER).

This report represents the final stage of the consultation process in relation to the application of the Regulatory Investment Test for Distribution (RIT-D) on potential credible options to address the identified need at Cannonvale.

13 Mar 2020N/A
Draft Project Assessment Report
(PDF 2.2 mb)

Ergon Energy has prepared this Draft Project Assessment Report in accordance with the requirements of clause 5.17.4(i) of the National Electricity Rules (NER).

This report represents the second stage of the consultation process in relation to the application of the Regulatory Investment Test for Distribution (RIT-D) on potential credible options to address the identified need at Cannonvale.

13 Dec 201924 Jan 2020
Non-Network Options Report
(PDF 1.5 mb)

Cannonvale 66/11kV substation (CANN) and the surrounding 66 kV sub-transmission network supplies approximately 7,198 customers including major customers such as the Proserpine Sugar Mill, Hamilton Island, South Molle Island and Daydream Island.

The 66 kV sub-transmission network in the Cannonvale and Jubilee Pocket area consists of radial 66 kV timber pole lines with a number of sections of underground cable. There is currently no remote switching capability.

In its current state, due to the radial nature of the network and the reliance upon manual switching, a credible fault on the sub-transmission network in the Cannonvale and Jubilee Pocket area would mean that load cannot be restored within the requirements of the Safety Net security criteria, with this situation worsening as load increases.

This report is an invitation to registered participants and interested parties to make submissions on credible options to address this identified need.

24 Jun 201919 Sep 2019

Cape River

Report typeDescriptionDate issuedSubmission closes
Final Project Assessment Report (PDF 2.2 mb)

Ergon Energy has prepared this Final Project Assessment Report in accordance with the requirements of clause 5.17.4(o) of the National Electricity Rules (NER).

This report represents the final stage of the consultation process in relation to the application of the Regulatory Investment Test for Distribution (RIT-D) on potential credible options to address the identified need at Cape River.

13 Mar 2020N/A
Notice of No Non-Network Options (PDF 2.3 mb)

Ergon Energy has identified a need for investment to remediate the safety and reliability risks currently associated with the aged assets at Cape River Substation in order to maintain a safe, reliable supply of electricity to customers in the Cape River region.

This notice has been prepared under clause 5.17.4(d) of the NER and summarises Ergon Energy's determination that no non-network option is, or forms a significant part of, any potential credible option for this RIT-D.

13 Dec 2019N/A

Cloncurry

Report typeDescription Date issued Submission closes
Non-Network Options Report (PDF 1.5 mb)Cloncurry 66/11kV Substation (CLON) and North Cloncurry 66/11kV Substation (NOCL) are normally supplied from Chumvale 220/66kV Substation (CHUM) via a single circuit 66kV sub-transmission feeder. Chumvale Substation is supplied by a single circuit 220kV feeder from the Mica Creek 'C' Substation (MICC) at Mt Isa. There is also a single circuit 66kV sub-transmission feeder from Mount Isa's Duchess Road 132/11/66kV Substation (DURO) to a normally open isolation point (designated DR-CC-1), which is located outside Chumvale Substation.

The thermal rating of the DR-CC-1 66kV feeder is no longer adequate to supply Cloncurry and Ergon Energy would not comply with the Safety Net requirements based on credible contingencies benchmarked against 50% POE load in the present configuration.

This report represents the first stage of the consultation process in relation to the application of the Regulatory Investment Test for Distribution (RIT-D) on potential credible options to address the identified need at Cloncurry.

Ergon Energy has prepared this Non-Network Options Report in accordance with the requirements of clause 5.17.4(e) of the National Electricity Rules (NER) and seeks information from interested parties about possible alternate solutions to address the need for investment.
14 Feb 202015 May 2020

Douglas Shire

Report typeDescriptionDate issuedSubmission closes
Draft Project Assessment Repor (PDF 1.7 mb)t

Ergon Energy is seeking information about possible solutions to address the reliability concerns in the Douglas Shire supply region, which may be able to be provided by parties other than Ergon Energy.

10 Apr 202029 May 2020
Non-Network Options Report
(PDF 1.7 mb)
We are seeking information about  solutions to address the reliability concerns in the Douglas Shire supply region, which may be  provided by parties other than Ergon Energy.20 Aug 201929 Nov 2019

East Bundaberg

Report typeDescriptionDate issuedSubmission closes
Notice of No Non-Network Options Report
(PDF 329.4 kb)

Bundaberg is a regional city located 360km north of Brisbane with a population of approximately 93,000 people. East Bundaberg 66/11kV Zone Substation (EABU) is located on the eastern edge of Bundaberg city and supplies a diverse mix of industrial, residential, and agricultural zones. There are approximately 8900 customers connected to the distribution network, including a number of major commercial and industrial customers located in Bundaberg and further north at Burnett Heads.

A condition assessment of East Bundaberg Zone Substation (EABU) has identified assets that are recommended for replacement. These assets are forecast to reach retirement based on a combination of Condition Based Risk Management (CBRM) modelling and known issues with problematic plant, which are required to be replaced or decommissioned to manage the safety and network risks associated with unplanned failure.

The internal investigations undertaken on the feasibility of the non-network solutions revealed that it is unlikely to find a complete non-network solution or a hybrid (combined network and non-network) solution to provide the magnitude of network support required in the East Bundaberg area to address the identified need.

The preferred network option is to replace the assets in poor condition. This notice of no non-network options is therefore published in accordance with rule 5.17.4(d) of the National Electricity Rules. As the next step in the RIT-D process, Ergon Energy will now proceed to publish a Final Project Assessment Report.

22 Jun 2020

Garbutt

Report typeDescriptionDate issuedSubmission closes
Final Project Assessment Report
(PDF 2.4 mb)

Ergon Energy has prepared this Final Project Assessment Report in accordance with the requirements of clause 5.17.4(o) of the National Electricity Rules (NER).

This report represents the final stage of the consultation process in relation to the application of the Regulatory Investment Test for Distribution (RIT-D) on potential credible options to address the identified need in the Townsville region.

13 Mar 2020N/A
Draft Project Assessment Report
(PDF 2.6 mb)

Ergon Energy Corporation Limited (Ergon Energy) has prepared this Draft Project Assessment Report (the Report) in accordance with the requirements of clause 5.17.4(i) of the National Electricity Rules (NER).

This report represents the second stage of the consultation process in relation to the application of the Regulatory Investment Test for Distribution (RIT-D) on potential credible options to address the identified need in the Townsville region.

13 Dec 201931 Jan 2020
Notice of No Non-Network Options
(PDF 3.6 mb)

Ergon Energy has identified a need for investment to remediate the safety and reliability risks currently associated with the aged assets at Garbutt Substation in order to maintain a safe, reliable supply of electricity to customers in the Townsville region.

This notice has been prepared under clause 5.17.4(d) of the NER and summarises Ergon Energy's determination that no non-network option is, or forms a significant part of, any potential credible option for this RIT-D.

13 Dec 2019

Gracemere

Report typeDescriptionDate issuedSubmission closes
Revised Final Project Assessment Report (PDF 1.4 mb)

Ergon Energy Corporation Limited has prepared this Revised Final Project Assessment Report in accordance with the requirements of clause 5.17.4(i) of the National Electricity Rules.

This report represents the final stage of the consultation process in relation to the application of the Regulatory Investment Test for Distribution (RIT-D) on potential credible options to address the identified need in the township of Gracemere.

24 Jan 2020N/A

Maryborough

Report typeDescriptionDate issuedSubmission closes
Notice of No Non-Network Options (PDF 430.4 kb)Maryborough 132/66kV substation (MARYSS) T59 is a Bulk Supply Point which supplies approximately 50,000 customers and 125MVA of peak load through connected Zone Substations. The 75MW Susan River Solar Farm is also connected to the 66kV network through a dedicated substation. MARYSS is located west of Maryborough and supplies the majority of the Fraser Coast Local Government Area, including the major regional centres of Maryborough and Hervey Bay as well as several smaller towns.

The purpose of this project is to address poor condition assets, compliance Safety Net provisions of the Distribution Authority, and compliance with performance standards as set out in the National Electricity Rules.

The internal investigations undertaken on the feasibility of the non-network solutions revealed that it is unlikely to find a complete non-network solution or a hybrid (combined network and non-network) solution to provide the magnitude of network support required in the Maryborough area to address the identified need.

The preferred network option is to replace assets in poor condition, install bus couplers to address Safety Net and upgrade protection to meet NER Network Performance requirements. This notice of no non-network options is therefore published in accordance with rule 5.17.4(d) of the National Electricity Rules. As the next step in the RIT-D process, Ergon Energy will now proceed to publish a Final Project Assessment Report.
26 Feb 2020

Pialba

Report typeDescriptionDate issuedSubmission closes
Notice of No Non-Network Options
(PDF 356.0 kb)

Pialba 66/11kV substation (PIALSS) is a Zone Substation which supplies approximately 5200 customers and 16MVA of peak load. PIALSS is located near the centre of Hervey Bay town and supplies the CBD area, the Hervey Bay Hospital, and the main shopping centre. There is also an extensive distribution network that supplies residential customers in the surrounding suburbs.

A condition assessment of PIALSS has identified assets that are recommended for replacement. These assets are forecast to reach retirement based on a combination of Condition Based Risk Management (CBRM) modelling and known issues with problematic plant, which are required to be replaced or decommissioned to manage the safety and network risks associated with unplanned failure.

The internal investigations undertaken on the feasibility of the non-network solutions revealed that it is unlikely to find a complete non-network solution or a hybrid (combined network and non-network) solution to provide the magnitude of network support required in the Hervey Bay area to address the identified need.

The preferred network option is to replace the assets in poor condition. This notice of no non-network options is therefore published in accordance with rule 5.17.4(d) of the National Electricity Rules. As the next step in the RIT-D process, Ergon Energy will now proceed to publish a Final Project Assessment Report.

3 Apr 2020

Pittsworth

Report typeDescriptionDate issuedSubmission closes
Draft Project Assessment Report
(PDF 1.2 mb)

Ergon Energy Corporation Limited (Ergon Energy) has prepared this Draft Project Assessment Report (the Report) in accordance with the requirements of clause 5.17.4(i) of the National Electricity Rules (NER).

This report represents the second stage of the consultation process in relation to the application of the Regulatory Investment Test for Distribution (RIT-D) on potential credible options to address the identified need.

  
Non-Network Options Report (PDF 1.2 mb)

Broxburn substation 33/11kV supplies the township of Pittsworth. Maximum demand in 2018 exceeded the substation nameplate capacity and is expected to exceed the emergency cyclic capacity by 2022. The two transformers at Broxburn substation were manufactured in the 1960s that they are near end of life including associated high voltage switches.

Ergon Energy has proposed to address these limitations by installing a 10MVA skid transformer and completed by December 2021.

This report is an invitation to registered participants and interested parties to make submissions about possible alternate solutions to address the identified limitations.

1 Jul 201910 Jan 2020

Planella

Report typeDescriptionDate issuedSubmission closes
Final Project Assessment Report
(PDF 1.4 mb)

Ergon Energy has prepared this Final Project Assessment Report in accordance with the requirements of clause 5.17.4(o) of the National Electricity Rules (NER).

This report represents the final stage of the consultation process in relation to the application of the Regulatory Investment Test for Distribution (RIT-D) on potential credible options to address the identified need at Planella.

13 Mar 2020N/A
Draft Project Assessment Report
(PDF 1.5 mb)

Ergon Energy has prepared this Draft Project Assessment Report in accordance with the requirements of clause 5.17.4(i) of the National Electricity Rules (NER).

This report represents the second stage of the consultation process in relation to the application of the Regulatory Investment Test for Distribution (RIT-D) on potential credible options to address the identified need at Planella.

15 Nov 201927 Dec 2019
Non-Network Options Report
(PDF 2.2 mb)

Planella 33/11kV substation (PLAN), located on the northern beaches of Mackay, is supplied via a single radial wood pole 33 kV sub-transmission line between North Mackay (NOMA) 33/11 kV substation and Planella substation.

Under most circumstances, the wood poles of the 33 kV sub-transmission line are accessible; however in the event of periods of heavy rainfall and/or king tides, sections of the line become virtually inaccessible.

In its current state, a fault on this line in an inaccessible location would mean that load cannot be restored within the requirements of the Safety Net security criteria, with this situation worsening as load increases.

This report is an invitation to registered participants and interested parties to make submissions on credible options to address this identified need.

24 Jun 201919 Sep 2019

Point Vernon (Hervey Bay)

Report typeDescriptionDate issuedSubmission closes
Notice of No Non-Network Options (PDF 373.2 kb)

Point Vernon 66/11kV Zone Substation (POVE) supplies 10,700 customers. POVE is energised radially from Pialba 66/11kV Zone Substation (PIAL) via a 5.1km single circuit concrete pole 66kV feeder (M023). Load at POVE peaked at 21MVA in February 2020 and is forecast to increase to approximately 23MVA by 2032. Proposed residential and commercial developments in the suburbs of Dundowran, Craignish, Toogoom and Eli Waters are continuing and may result in load growth in excess of the forecast.

The purpose of this project is to address compliance with the Safety Net provisions of the Distribution Authority.

The internal investigations undertaken on the feasibility of the non-network solutions revealed that it is unlikely to find a complete non-network solution or a hybrid (combined network and non-network) solution to provide the magnitude of network support required in the Point Vernon area to address the identified need.

The preferred network option is to extend a new 66kV feeder to POVE to address Safety Net requirements. This notice of no non-network options is therefore published in accordance with rule 5.17.4(d) of the National Electricity Rules. As the next step in the RIT-D process, Ergon Energy will now proceed to publish a Draft Project Assessment Report.

10 Jun 2020

Wide Bay Burnett

Report typeDescriptionDate issuedSubmission closes
Final Project Assessment Report (PDF 914.6 kb)

Ergon Energy Corporation Limited (Ergon Energy) has prepared this Final Project Assessment Report in accordance with the requirements of clause 5.17.4(i) of the National Electricity Rules (NER).

This report represents the final stage of the consultation process in relation to the application of the RIT-D on potential credible options to address the identified need to continue to provide electricity to the consumers in the Upper Burnett supply area in a reliable, safe and cost-effective manner.

3 Apr 2020 
Draft Project Assessment Report
(PDF 1004.3 kb)

Ergon Energy Corporation Limited (Ergon Energy) has prepared this Draft Project Assessment Report (the Report) in accordance with the requirements of clause 5.17.4(i) of the National Electricity Rules (NER).

This report represents the second stage of the consultation process in relation to the application of the Regulatory Investment Test for Distribution (RIT-D) on potential credible options to address the identified need.

19 Feb 202002 Apr 2020
Non-Network Options Report (PDF 1.1 mb)

The existing 66kV M028 feeder forms part of the 66kV subtransmission network supplying the 66/11kV zone substations Degilbo, Gayndah, Mundubbera Town and Eidsvold as well as the Mount Rawdon gold mine.

Feeder M028 is 92km long, 64 years old and has reached its end of life based on the condition of the 7/.104 HDBC conductor and wooden poles.

Ergon Energy has identified that the preferred internal network option is to replace the entire aged M028 feeder with a new 66kV single circuit concrete pole feeder, strung with Neon conductor and optical ground wire (OPGW), originating from the 132/66kV Isis Bulk Supply Point and connecting Degilbo and Gayndah zone substations by December 2023.

This is a Non-Network Options Report, where Ergon Energy is seeking information from interested parties about possible alternate solutions to address the need for investment.

16 Oct 201916 Jan 2020

Closed consultations

View the Closed consultations webpage to see the list of Regulatory Test Consultations that have now concluded.