HumeLink – delivering affordable, safe and reliable electricity.

HumeLink is a new 500kV transmission line which will carry electricity to customers from new generation sources, including the expanded Snowy Hydro scheme. It will connect Wagga Wagga, Bannaby and Maragle. 

Why do we need HumeLink?

HumeLink will: 

  • benefit energy customers and deliver $491 million in net benefits;
  • increase the amount of electricity that can be delivered to customers in NSW, the ACT and across the National Electricity Market;
  • reduce the need for new dispatchable generation investment to meet growing demands;
  • avoid capital costs that would otherwise be required associated with enabling greater integration of renewables in the National Electricity Market (NEM); 
  • lower the aggregate generator fuel costs required to meet future demand in the NEM
  • provide significant ‘competition benefits’ by increasing the efficiency of bidding in the wholesale market; 
  • help facilitate further reductions of carbon emissions to  support achieving Australia’s climate change targets;
  • create more than 1000 construction jobs; and
  • contribute to regional economic activity generating major benefits for local communities along the route. 
The project has been identified as a priority by the Australian Energy Market Operator (AEMO) and the Federal and NSW Governments. 

  • Landowner support services

    We recognise the HumeLink project may have increased the level of stress and anxiety experienced by landowners, and have engaged an external service provider – Assure Programs – to provide landowners with short-term support and counselling.

    About Assure Programs

    Assure Programs' psychologists are professionally qualified with a minimum of five years’ post-registration experience. Like doctors, Assure Programs counsellors are bound by a professional Code of Ethics preventing the disclosure of personal information without written consent. 

    The service is confidential and anonymous. TransGrid does not receive any information about who uses these services.

    Sessions generally last one hour and most issues can be resolved within a few sessions. When long-term advice or counselling is required, the counsellor will consider the most appropriate referral option and make a recommendation.

    There is no cost to landowners in accessing this service. 

    How to make an appointment

    If you are a landowner, and would like confidential support and counselling, we encourage you to access the services Assure Programs provides. 

    You can book an appointment by calling Assure on 1800 808 374, or you can request an appointment online:

    When you call Assure, please let the team know that you are from TransGrid and the business unit is “landowners”. This will ensure you are able to get the support you need. You are not expected to provide the reason – this is a conversation saved for your session with the psychologist.

    In addition, the NSW Centre for Property Acquisition has free support and counselling services available to any landowners affected by an acquisition. For more information, call 1300 029 146 or visit their website.

  • Project funding approval process

    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:

    • Informing stakeholders of investment need and proposed electrical circuit options to address this need
    • Testing the market for alternative and more efficient solutions
    • Explaining to stakeholders the basis on which the preferred electrical circuit option has been selected. 

    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.  

    RIT-T process and submissions

    Project Specification Conclusions Report
    In 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:

    Delta Energy

    Energy Australia

    National Parks Association of NSW

    Public Interest Advocacy Centre

    Smart Wires

    Snowy Hydro

    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.

  • Selecting a route for transmission

    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.

  • Improving our engagement

    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:

    • providing the community with regular project updates
    • reviewing language and imagery used in project fact sheets and on the website
    • reviewing the mid-year timeframe for narrowing the corridor
    • improving timeliness and quality of responses to community queries
    • establishing reference groups to provide input into consultation processes
    • providing more resourcing and training to engagement team members.

    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 if they would like to be part of this process. 

  • Community Consultative Groups

    We would like to hear from community members interested in joining independent Community Consultative Groups (CCGs). TransGrid is establishing CCGs for the HumeLink project to enable community participation in project planning.

    The groups will provide an opportunity for discussion between TransGrid and landowners, local community organisations, councils and other members of the communities in the HumeLink project study corridor.

    Your voluntary participation in a CCG will provide TransGrid additional, valuable feedback into the planning process and our engagement approach.   

    There will be three CCGs representing communities from:

    1. Yass and Upper Lachlan Shires

    2. Wagga Wagga and Cootamundra Gundagai Shires 

    3. Snowy Valleys LGA

    We are seeking people who live locally and have a variety of skills to join the CCGs. You will be expected to contribute constructively to group discussions, attend a minimum of four meetings a year, and share information about the HumeLink project to the broader community. 

    There will be 12 positions available in each group. Assessment of applications will be undertaken by the independent chair of the CCGs and the independent landowner advocate Mr Rod Stowe.   

    If you would like to apply, please download the relevant forms below or if you have any questions, please contact the CCG Secretariat Brendan Blakeley, at or 0412 686 026.     

    Required forms 

    Local community:

    - Nomination form (local community representatives)

    Stakeholder groups:

    - Nomination form (stakeholder group representatives) 

    Terms of Reference

    Terms of Reference and Code of Conduct 

    Applications must be lodged by 24 September 2021 and sent directly to

  • Surveys and investigations

    Surveys are being conducted to help inform design, with investigations on both public and private land. Thank you to all the landowners who have provided their terms and conditions to allow our project team to access their properties.

    > Ecology surveys – These surveys are used to confirm existing vegetation types and animal and plant species. The surveys are completed each season and coincide with when certain species are more active or more easily identified, for example when flowering occurs or during breeding season. We have finished our summer and autumn surveys. Winter surveys will be complete by the end of August and the spring survey is due to start in September.

    > Geotechnical investigations – We need to understand local ground conditions. Soil and rock samples will be collected from around 300 separate locations using low impact methods such as borehole drilling and cone penetration tests. We will contact landowners later this month to seek consent to take samples on their property and discuss access arrangements. Works are expected to start in late 2021 and will take around six months.

    > Cultural heritage studies – These surveys help identify or confirm sites or items which have heritage significance. This may include built structures, gravesites or sacred sites relevant to Aboriginal people or those who have since settled in the area. Surveys are typically done on foot and are expected to start in late 2021.

  • Key dates

    Narrowed study corridor published
    ​Late 2021
    Environmental Impact Statement (EIS) on public exhibition

    EIS approval by NSW Minister for Planning
    Construction starts
    Construction complete
    Late 2026

  • More information
  • Contact us

    T: Toll-free phone number: 1800 317 367


    M: HumeLink Community Engagement Team, PO BOX A1000, Sydney South NSW1235

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