To be given final investment approval, TransGrid must show that HumeLink will deliver benefits to energy consumers. The benefits delivered by the project are assessed using the Regulatory Investment Test – Transmission (RIT-T) administered by the Australian Energy Regulator (AER).
The RIT-T process considers various network configurations, known as electrical circuits, to determine which circuit will deliver the best network reliability, capacity and value-for-money. It assesses network and non-network solution options from a technical and economic perspective by:
Through this process we have identified a preferred double-circuit option which will now be considered by the AER for regulatory approval. It is important to note, that a circuit option can be delivered via various route options, and that not all route options currently under consideration will be built.
Project Specification Conclusions ReportIn June 2019, TransGrid published the Project Specification Consultation Report (PSCR) and supporting documents Inputs and Methodology Consultation Paper and Inputs and Methodology Assumptions Workbook.
The PSCR detailed the need to reinforce the transmission network in southern NSW to increase capacity to the state's demand centres and describes credible options to meet the need, including technical characteristics that would be required of a non-network option.
Six organisations made submissions responding to the PSCR:
National Parks Association of NSW
Public Interest Advocacy Centre
Project Assessment Draft Report (PADR)
Their comments were considered when preparing the Project Assessment Draft Report (PADR), published in January 2020. The PADR is a full quantitative analysis of the proposed options and expected market benefit across a range of scenarios and sensitivities, published as supporting documents:
Net Present Value Model (PADR)
Market Modelling Report (PADR)
Market Modelling Outputs Summary – Central Scenario (PADR)
Market Modelling Outputs Summary – Fast Change Scenario (PADR)
Market Modelling Outputs Summary – Slow Change Scenario (PADR)
Market Modelling Outputs Summary – Step Change Scenario (PADR)
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.
Presentation - EY Market Modelling
Presentation - Project Overview and Credible Options
Presentation - Net Present Value (NPV) results
Written submissions on the PADR closed on 24 February 2020.
TransGrid received eight submissions to the PADR. Submissions approved for publication are below:
Energy Australia - PADR Submission
ERM Power - PADR Submission
Mal Park - PADR Submission
Neoen - PADR Submission
Public Interest Advocacy Centre - PADR Submission
Smart Wires - PADR Submission
Snowy Hydro - PADR Submission
Project Assessment Conclusions Report (PACR)
In July 2021, TransGrid published the Project Assessment Conclusions Report (PACR) and supporting documents RIT-T Net Present Value Results, Market Modelling Report and market modelling workbooks. The final document in the RIT-T process, the PACR addresses PADR consultation responses and determines the final preferred option.
The regulatory approval process has commenced. TransGrid will adopt a staged Contingent Project Application (CPA) process to reduce cost uncertainty and expects CPA1 to be lodged in 2021.
Net Present Value Model (PACR)
Market Modelling Report (PACR)
Market Modelling Outputs Summary – Central Scenario (PACR)
Market Modelling Outputs Summary – Fast Change Scenario (PACR)
Market Modelling Outputs Summary – Slow Change Scenario (PACR)
Market Modelling Outputs Summary – Step Change Scenario (PACR)
If funding is approved, HumeLink will go through a separate NSW Government environmental and planning approvals process. The environmental approvals process requires that impacts are identified and clear management strategies are put in place.
We are refining route options for HumeLink. When selecting a route, we are committed to discussing route options with landowners and communities. Where possible, we will plan new transmission lines on public land or adjacent to existing easements.
We are talking to landowners and communities about HumeLink and seeking their feedback to help us identify environmental impacts, integrate local knowledge about land uses into our planning, and improve our design.
To improve consultation with landowners and communities, the former Commissioner for NSW Fair Trading, Rod Stowe, has agreed to advise us on our engagement practices and processes in the capacity of Community and Landowner Advocate within our business. We are committed to best practice engagement and always treating people fairly and with respect.
To share your local knowledge, you can put your comments on the interactive project map.
Information for landowners on easements and compensation are available here.
TransGrid is committed to more robust, transparent and effective community engagement on the HumeLink project. We have heard that landowners and community members have not been satisfied with the engagement for the project to date and we take these concerns seriously.
Late last year we engaged independent Landowner Advocate Rod Stowe to assess our practices. This review has identified a number of areas for improvement, including:
Following receipt of Mr Stowe's analysis of our practices, we have committed to implementing all recommendations made in the report. We look forward to continuing our work with Mr Stowe to improve our engagement practices with landowners and communities.
As one of the first steps towards implementing these recommendations, we will be setting up independent Community Consultative Groups. These groups will act as a sounding board as the project develops, building on the feedback and local insights we have already gathered from local landowners to help us finalise the project's alignment.
We encourage landowners and community members to register their interest by emailing firstname.lastname@example.org if they would like to be part of this process.
Landowner Consultation Pack
T: Toll-free phone number: 1800 317 367
M: HumeLink Community Engagement Team, PO BOX A1000, Sydney South NSW1235