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Regulatory investment test

 Aerial view of cars on bridge over river and electricity transmission lines

The Regulatory Investment Test (RIT) is a cost benefit analysis overseen by the Australian Energy Regulator (AER). The purpose of a RIT is to identify the preferred network or non-network option to deliver the greatest economic benefit to market. The process also ensures investment decisions are in the long term interests of customers.

It assesses the economic and technical impact of major network investments in the national energy market above $6 million. 

There are three broad stages we follow if a RIT is required for investment*. 


Current regulatory investment test projects

To get involved in the following RIT-T and RIT-D projects, please contact AusNet Services via rittconsultations@ausnetservices.com.au or ritdconsultations@ausnetservices.com.au.

Access to historical RIT-T or RIT-D reports for closed projects can also be provided via email. 

AusNet Services is applying the RIT to the following projects listed below:

 

Regulatory investment test for transmission

Identified Need 

Location 

Report 

Consultation Closes 

Status 

Maintain Supply Reliability
Shepparton Terminal Station
Project Assessment Conclusions Report
Project Assessment Draft Report
Project Specification Consultation Report
4 Nov 2021
23 Jul 2021
18 Mar 2021
Open
Closed
Closed
Maintain Supply Reliability
Sydenham Terminal Station
Project Assessment Draft Report
Project Specification Consultation Report
Project Assessment Conclusions Report
4 Oct 2021
15 Mar 2021
Closed
Closed

Maintain Supply Reliability

Cranbourne Terminal Station

Project Specification Consultation Report

25 Sep 2020

Closed

Corrective Action Reliability

Horsham Terminal Station

Project Assessment Draft Report
Project Specification Consultation Report

15 Jun 2021
3 Sep 2020

Closed
Closed


 

Regulatory investment test for distribution

Identified Need Location
Report
Consultation Closes  Status 
Service Constraints
Maffra  Notice of Determination Report  N/A
Closed
Service Constraints
Bayswater  Notice of Determination Report  N/A
Closed
Service Constraints
Clyde North
Non-Network Options Report 
27 August 2021
Closed

Service Constraints

Traralgon

Non-Network Options Report

20 August 2021

Closed

Service Constraints Warragul Non-Network Options Report 31 May 2021 Closed
Service Constraints
Watsonia Notice of Determination Report N/A Deferred

Service Constraints

Thomastown

Non-Network Options Report

21 July 2021

Deferred

Service Constraints
Benalla
Non-Network Options Report
21 July 2021 Deferred

Consultations

To get involved in RIT projects, please contact AusNet Services via rittconsultations@ausnetservices.com.au

Further information is also available in the Energy Networks Australia RIT-T handbook.


Projects exempt from RIT

Under transitional provisions in the National Electricity Rules, the following in-flight projects are exempt from the Regulatory Investment Test.


Project name

Location 

Scope of work summary

Completion

North West Comms Network MLTS, TGTS, HYTS, APD, HGTS, TRTS, MOPS Install fibre cable between TGTS, HYTS and APD. Upgrade batteries at MLTS, TRTS, MOPS, TGTS and APD. Replace SDH/PDH with MPLS-TP equipment at MLTS, HGTS, MOPS, TGTS, HYTS, APD and TGTS.

Install DWDM equipment at MLTS and HYTS. Migrate services to MPLS-TP. Decommission SDH/PDH equipment and radio sites.
2024 
MD1000 RTU at Zone Substations FTR, FGY, BWN, BGE, ELM, RWN, LDL, CLN, EPG, BRA, BN and BWA Install and commission the RTU and local HMI. Connect RTU to all existing IEDs at these ZSS via their communication protocols e.g. DNP3, Modbus, IEC103 etc. Separate common alarms. Decommission existing RTU 2023
Power Station Closure Works HWPS Mandatory compliance works, including various civil and electrical works related with closure of power station 2023
Switchyard Redevelopment 220kV at Terminal Station  HWPS Replace the remaining 220kV Bulk Oil Circuit Breakers and install remote operated isolators 2022
Power Station Rebuild YPS Replace 66/11kV transformer, circuit breakers and other primary equipment 2022
Redevelopment at Terminal Station WMTS Replace 220/66kV transformers, 220kV switch bays, 66kV switch bays and all protection and control systems.  Retire two 220/22kV transformers and the 22 kV supply from WMTS 2022
Circuit Breakers 500kV at Terminal Station HYTS Replace deteriorated 500kV switchgear 2022
Static Var Compensator Control and Relays ROTS Install thyristors, controllers and cooling system on second SVC, and protection relay panels for both SVCs. Decommission old equipment.

Replace reactors, capacitor cans, instrument transformers and faulty bus support insulators for both SVCs. Replace connections, and if found to be an issue, sections of bus-work
2022
CCTV Upgrades at Terminal Stations DDTS, ROTS, KTS, SMTS, HWTS, LYPS, JLTS Upgrade CCTV surveillance
2022
Primary and Secondary assets at Terminal Stations TBTS, RCTS, TTS, MWTS, EPSY, LY Replace 66kV CB CT and Isolators at all locations, 220kV CT CVTs at TBTS, EPSY, and 11kV and 22kV fuse isolators at RCTS and TBTS
2022
Circuit Breakers 500kV at Terminal Stations LYPS, HWTS Replace 500kV circuit breakers
2021
Circuit breakers 220/66kV at Terminal Station FBTS Replace B4 220/66kV transformer.  Replace 220kV and 66kV circuit breakers
2021
REFCL Tranche 2 RWN, ELM, FGY, WOTS, MOE, BGE, LDL, BDL Install REFCL equipment at each zone substation
2021