Regulated revenue investments must undergo the Regulatory Investment Test for Transmission (RIT-T) in accordance with the National Electricity Rules.

As set out in clause 5.16 of the National Electricity Rules, the RIT-T exists to identify the option that maximises the present value of net economic benefit to all who produce, consume and transport electricity in the market.

From 18 September 2017, changes to the National Electricity Rules widened the scope of the RIT-T to include replacement projects.

We are applying the RIT-T to the projects listed in the table below. Submissions are welcome on the current RIT-T projects by the applicable consultation closing date.

RIT-T Status Type Reports Closing Dates Status
Managing risk on Line 94U (Parkes - Forbes)

PSCR Published

Transmission Line

Project Specification Consultation Report

15 August 2024

Open

Addressing low spans on Line 1, Line 2, and Line 973/9GL

PSCR Published

Transmission Line

Project Specification Consultation Report

 

5 August 2024

Open

Maintaining compliance with performance standards applicable to Regentville substation secondary systems

PSCR Published

Secondary Systems

Project Specification Consultation Report

2 August 2024

Open

Maintaining compliance with performance standards applicable to Wallerawang substation secondary systems

PSCR Published

Secondary Systems

Project Specification Consultation Report

2 August 2024

Open

Meeting demand growth in the Western Sydney Aerotropolis 'Priority Growth Area'

PSCR Published

Market Benefits

Project Specification Consultation Report

5 August 2024

Open

Maintaining safe and reliable operation of Molong substation

PSCR Published

Substation

Project Specification Consultation Report

2 July 2024

Open

Managing risk on Lines 21, 22, 959 & 92Z (conductor condition)

PACR Published

Transmission Line

Project Specification Consultation Report

Project Assessment Conclusions Report

3 July 2024

Open

Managing risk on Line 963 (Tomago-Taree)

PSCR Closed

Transmission Line

Project Specification Consultation Report

 

Closed

Maintaining compliance with performance standards applicable to Lower Tumut substation secondary systems

PACR Published

Secondary Systems

Project Specification Consultation Report

Project Assessment Conclusions Report

16 June 2024

Open

Maintaining safe and reliable operation of Murray substation

RIT-T Complete

Substation

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Maintaining compliance with performance standards applicable to Sydney East substation secondary systems

RIT-T

Complete

Secondary Systems

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Maintaining compliance with performance standards applicable to protection relays

PADR Published

Secondary Systems

Project Specification Consultation Report

Project Assessment Draft Report

 

7 June 2024

Open

Maintaining reliable supply to Western Sydney

PSCR Published

Reliability

 Project Specification Consultation Report

20 July 2024

Open

Managing the risk of capacitor bank failure

RIT-T Complete

Substation

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Managing risk on Line 977/1 (Canberra - Queanbeyan)

RIT-T Complete

Transmission Line

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Maintaining voltage levels in Northern NSW

RIT-T Complete

Reliability

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Managing risk on Line 966 (Armidale – Koolkhan)

RIT-T Complete

Transmission Line

Project Specification Consultation Report

Project Assessment Conclusions Report

 

 

Closed

Managing risk on Line 16 (Marulan – Avon)

RIT-T Complete

Transmission Line

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Maintaining safe and reliable operation of Beryl substation

RIT-T Complete

Substation

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Managing the risk of circuit breaker failure

RIT-T Complete

Substation

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Managing risk on Line 23 (Vales Point – Munmorah)

RIT-T Complete

Transmission Line

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Managing risk on Southern Sydney transmission lines

RIT-T complete

Transmission Line

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Meeting system strength requirements in NSW

PSCR Closed

System Strength

Project Specification Consultation Report and non-network solution EOI

 

Closed

Managing expected demand in the Panorama area

RIT-T Cancelled

Reliability

Project Specification Consultation Report
PSCR Attachment: GHD Independent Demand Forecast Review

Notice of RIT-T Cancellation

 

Closed

Increasing capacity for generation in the Molong and Parkes area

RIT-T Complete

Market benefits

Project Specification Consultation Report

PSCR Submissions:

AMP Power Australia

Smart Wires

PADR documents:

Project Assessment Draft Report

EY Market Modelling Report

NPV Model Outcomes

Project Assessment Conclusions Report

 

Closed

 

Maintaining Reliable Supply to Deniliquin Coleambally and Finley area

RIT-T Complete

Reliability

Project Specification Consultation Report

Project Assessment Conclusions Report

 

 

Closed

 

Managing safety and environmental risks on Line 24 (Vales Point - Eraring)

RIT-T Complete

Transmission Line

Project Specification Consultation Report

Project Assessment Conclusions Report

 

 

Closed

Closed

Managing risk on Line 86 (Tamworth-Armidale)

RIT-T Complete

Transmission Line

Project Specification Consultation Report

Project Assessment Draft Report

Project Assessment Conclusions Report 

 

 

 

Closed

Closed

Closed

Maintaining compliance with performance standards applicable to Ingleburn substation secondary systems

RIT-T Complete

Secondary Systems

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Closed

Managing safety and environmental risks on Line 21 (Tuggerah - Sydney North)

RIT-T Complete

Transmission Line

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Closed

Managing safety and environmental risks on Line 18 (Kangaroo Valley - Dapto)

RIT-T Complete

Transmission Line

Project Specification Consultation Report

PSCR Submission: Lee Kingma

Project Assessment Conclusions Report

 

 

Closed

Closed

Closed

Maintaining reliable supply to the North West Slopes area

RIT-T Complete

Reliability

Project Specification Consultation Report

Project Assessment Draft Report

Project Assessment Conclusions Report

Amended Project Assessment Conclusions Report

 

 

 

 

Closed

Closed

Closed

 

Maintaining reliable supply to Bathurst, Orange and Parkes areas

RIT-T Complete

Reliability

Project Specification Consultation Report

Project Assessment Draft Report

Project Assessment Conclusion Report

Amended Project Assessment Conclusions Report

 

 

 

 

Closed

Closed

Closed

 

Maintaining compliance with performance standards applicable to Liverpool substation secondary systems

RIT-T Complete

Secondary Systems

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Closed

Maintaining compliance with performance standards applicable to Darlington Point substation secondary systems

RIT-T Complete

Secondary Systems

Project Specification Consultation Report 

Project Assessment Conclusions Report

 

Closed

Closed

Managing asset risks at Forbes substation

RIT-T Complete

Substation

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Closed

Improving stability in south-western NSW

RIT-T Complete

Increase network stability limits

Project Specification Consultation Report

Project Assessment Draft Report

Project Assessment Conclusion Report 

Notice of Change to Non-Network Option

 

 

 

Closed

Closed

Closed

Maintaining compliance with performance standards applicable to Murrumburrah substation

RIT-T Complete

Secondary Systems

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Closed

Managing safety and environmental risks on Line 17

RIT-T Complete

Transmission line

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Closed

Meeting demand growth in the Greater Macarthur area

RIT-T Complete

Reliability

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Closed

Maintaining compliance with performance standards applicable to Tuggerah substation secondary systems

RIT-T Complete

Secondary Systems

Project Specification Consultation Report

Project Assessment Conclusions Report

 

Closed

Closed

Maintaining compliance with performance standards applicable to Broken Hill substation secondary systems

RIT-T Complete

Secondary Systems

Project Specification Consultation Report

Project Assessment Draft Report

Submission: Public Interest Advocacy Centre

Project Assessment Conclusions Report

 

Closed

Closed

Closed

Closed

Maintaining a reliable supply to Broken Hill

RIT-T Complete

Reliability

Project Specification Consultation Report

Project Assessment Draft Report (superseded)

Revised Project Assessment Draft Report

Project Assessment Conclusion Report

 

 

 

 

Closed

Closed

Closed

Closed

Managing safety and environmental risks on Line 3W (Kangaroo Valley - Capital Wind Farm)

RIT-T Complete

Transmission line

Project Assessment Conclusions Report

Project Specification Consultation Report

 

Closed

Closed

Managing safety and environmental risks on Line 81 (Newcastle - Liddell)

RIT-T Complete

Transmission line

Project Assessment Conclusions Report

Project Specification Consultation Report

 

Closed

Closed

HumeLink

 

RIT-T Complete

 

 

 

 

Intraregional Capacity Transfer 

 

 

 

 

Project Specification Consultation Report

 

 

 

 

 

Closed

Project Assessment Draft Report (Superseded)

Closed

Project Assessment Draft Report (Amended)*

Closed

Project Assessment Conclusions Report

Closed

Project Assessment Conclusions Report Addendum

*Schematic drawings for Options 3 and 4 on page 21 of the PADR were inadvertently transposed in the document issued on 10 January, and corrected on 15 January 2020.

Closed

 

 

Maintaining compliance with performance standards applicable to Wagga 330kV substation secondary system

RIT-T Complete

Secondary Systems

Project Assessment Conclusions Report

Project Specification Consultation Report

 

Closed

Closed

Maintaining compliance with performance standards applicable to Deniliquin substation secondary system

RIT-T Complete

Secondary Systems

Project Assessment Conclusions Report

Project Specification Consultation Report

 

Closed

Closed

Maintaining a reliable Static Var Compensator at Lismore

RIT-T Complete

Static Var Compensator

Project Assessment Conclusions Report

Project Specification Consultation Report

 

Closed

Closed

Maintaining compliance with performance standards applicable to Haymarket substation secondary systems

RIT-T Complete

Secondary Systems

Project Assessment Conclusions Report

Project Specification Consultation Report

 

Closed

Closed

Managing Sydney East substation's asset risks

RIT-T Complete

Substation

Project Assessment Conclusions Report

Project Specification Consultation Report

 

Closed

Closed

Maintaining a reliable Upper Tumut substation

RIT-T Complete

Substation

Project Assessment Conclusions Report

Project Specification Consultation Report

 

Closed

Closed

Managing safety and environmental risks from corrosion on Line 959_92Z

RIT-T Complete

Transmission line

Project Assessment Conclusions Report

Project Specification Consultation Report

 

Closed

Closed

Managing asset risks at South Sydney substation

PADR Closed

Substation

Project Assessment Draft Report

Project Specification Consultation Report

 

Closed

Closed

Managing the Risk of Corrosion between Vineyard and Munmorah on Line 25 & 26

RIT-T Complete

Transmission line

Project Assessment Consultation Report

Project Assessment Draft Report

Project Specification Consultation Report

 

Closed

Closed

Closed

Managing the Risk of Corrosion on Line 8

RIT-T Complete

Transmission line

Project Assessment Conclusions Report

Project Specification Consultation Report

 

Closed

Closed

Managing the Risk of Corrosion between Vales Point and Sydney North on Line 22

RIT-T Complete

Transmission line

Project Assessment Conclusions Report

Project Specification Consultation Report

 

Closed

Closed

Victoria to NSW Interconnector Upgrade (VNI)

RIT-T Complete

Interconnector

Project Assessment Conclusions Report

Project Assessment Draft Report

Project Specification Consultation Report

 

Closed

Closed

Closed

Victoria to NSW Interconnector West (VNI West)

PACR Published

Interconnector

Project Assessment Conclusions Report

Project Assessment Draft Report

Project Specification Consultation Report

 

Closed

Expanding NSW-QLD Transmission Transfer Capacity (QNI)

RIT-T Complete

Interconnector

Project Assessment Conclusions Report

Project Assessment Draft Report

Project Specification Consultation Report

 

Closed

Closed

Closed

 

A small number of Transgrid projects were committed during the transitional period, 18 September 2017 to 30 January 2018, and are excluded from the RIT-T process:

Project

Description

Completion date

Lower Tumut Secondary Systems Renewal

Replacement of secondary systems equipment at Lower Tumut

June 2020

SCADA-EMS Replacement

Replacement and commissioning of the new SCADA between TransGrid sites and AEMO, as well as third parties

July 2020