Overview
The Hunter Transmission Project (HTP) is declared both a priority transmission infrastructure project (PTIP) and a critical State significant infrastructure (CSSI) project. The Energy Corporation of NSW (EnergyCo) is the infrastructure planner for this essential initiative.
The project involves building a new overhead 500 kilovolt transmission line spanning around 110 kilometres between Bayswater in the Upper Hunter and Olney in the Lower Hunter. The HTP will also include building new switching stations in Bayswater and Olney, along with upgrades to the existing Bayswater and Eraring substations. This will add up to 5 gigawatts of extra electricity transfer capacity between Bayswater and Eraring.
Transgrid and EnergyCo have signed a commitment deed, officially confirming Transgrid as the preferred network operator for the HTP which will advance NSW’s clean energy transition.
EnergyCo will seek ministerial approval to appoint Transgrid as the network operator responsible for delivering, operating and maintaining the project. The commitment deed outlines a defined scope of work for Transgrid to support project planning and preparations for construction.
Environmental Impact Statement
The Environmental Impact Statement (EIS) for the Hunter Transmission Project is now on public exhibition. Community and stakeholders can view the document on the major projects portal of the NSW Department of Planning, Housing and Infrastructure (DPHI) and make a formal submission.
The EIS describes the potential environmental, economic and social impacts from the Hunter Transmission Project and proposes measures to reduce, minimise or mitigate those impacts. It details findings from multiple specialist studies including traffic and transport, Aboriginal heritage, biodiversity and visual amenity amongst others.
The EnergyCo team is hosting multiple drop-in and information sessions across the Hunter region for the community and landowners to access information about the EIS. The project webpage has updated information about the sessions and other resources that can be helpful.
The EIS will be on display from Wednesday, 27 August 2025 until 5:00pm Wednesday, 24 September 2025.
EnergyCo will continue to lead the planning and engagement for the HTP until the network operator is appointed.
Transgrid remains committed to supporting EnergyCo as they plan for the HTP and work with the community.
Project map
Frequently Asked Questions (FAQ)
1. How do I get in touch with the project?
2. What is the commitment deed?
3. What does the commitment deed mean for Transgrid?
4. When is the network operator scheduled to be appointed?
Contact us
- EnergyCo will continue to lead the planning and engagement for the HTP until the network operator is appointed. For more information on this project, please contact EnergyCo via the contact details below:
o Email: htp@energyco.nsw.gov.au
o Phone: 1800 645 972
o Website: energyco.nsw.gov.au/htp
- Transgrid contact:
o Toll-free number: 1800 222 537
o Email: htpcommunity@transgrid.com.au
News
29 January 2025
Transgrid and EnergyCo sign agreement for Hunter Transmission Project
Transgrid has welcomed a commercial agreement with the NSW Government for the Hunter Transmission Project, which is a critical next step as the state transitions to a cleaner, more affordable electricity supply.