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Central-West Orana Renewable Energy Zone

Central-West Orana transmission project

The Central-West Orana Renewable Energy Zone (REZ) will be serviced by new transmission network infrastructure, including transmission lines and energy hubs, which will transfer power generated by solar and wind farms to electricity consumers.

Find out more about the transmission project


The NSW Government is in the development phase for the State’s first REZ in the Central-West Orana region. The Central-West Orana REZ is approximately 20,000 square kilometres centred by Dubbo and Dunedoo, on the land of the Wiradjuri, Wailwan and Kamilaroi people.



Key facts

  • The REZ will initially unlock at least 4.5 gigawatts of new network capacity by the late-2020s.
  • New transmission infrastructure will enable generators (such as solar and wind farms) participating in the REZ to export electricity to the rest of the network.
  • It is expected to bring up to $20 billion in private investment to the Central-West Orana region by 2030.
  • At its peak, this REZ is expected to support around 5,000 construction jobs in the region.

Why the region was chosen

The indicative location of the Central-West Orana REZ was chosen following a detailed statewide geospatial mapping exercise undertaken by the NSW Government in 2018. This initial analysis sought to identify optimal locations to host renewable energy generation around the State, including areas with strong renewable energy resource potential, proximity to the existing electricity network, and consideration of potential interactions with existing land uses, including agricultural lands and biodiversity conservation.

Since then, EnergyCo has worked through a process to refine the geographical area of the REZ. Read more about the methodology for refining the geographical area here.

The Central-West Orana was the first REZ to be declared in Australia and has enormous potential for the development of solar and wind projects that can contribute energy to the National Electricity Market (NEM), support jobs and drive investment across the regional economy.

Industry forums shine light on new work opportunities

New packages of work for constructing transmission lines in Australia’s first Renewable Energy Zone (REZ) will be available from mid-July.

Local businesses and suppliers looking for opportunities to participate in the energy transition can hear about them first-hand through industry forums being held across the Central-West Orana REZ between 29 July and 6 August 2024.

Learn more and register to attend a session that suits you best.

Register here

Unlocking opportunities

Discover the benefits of the Central-West Orana REZ from Mayor Mathew Dickerson of Dubbo Regional Council.
Consultation with the community

EnergyCo is committed to working closely with the community as we plan and deliver the Central-West Orana REZ. You can visit Project documents to view the latest community updates, fact sheets, reports and more.

EnergyCo established a community reference group for the Central-West Orana REZ in mid-2022 which aims to provide an open forum for discussion between EnergyCo, the community and key stakeholders about the REZ transmission project and broader REZ issues. We are inviting Expressions of Interest for 2024-2026 membership until Tuesday 18 June. To learn more about the community reference group, visit Working with the community.

You can contact us at any time if you have questions or feedback.

Registration of Interest

In June 2020, we received 113 registrations of interest for the Central-West Orana REZ, representing 27 gigawatts of new energy generation and storage projects. This interest from the private sector significantly exceeds the amount of energy required to deliver the REZ. It will help to ensure a competitive tender process and drive improved outcomes for host communities.

For more information, visit Renewable energy generation projects.


The Central-West Orana REZ was formally declared by the Minister for Energy and Environment under section 19(1) of the Electricity Infrastructure Investment Act 2020 (the Act) and published in the NSW Gazette on 5 November 2021. The declaration is available here.

The REZ declaration is the first step in formalising the REZ under the Act and establishes EnergyCo as the Infrastructure Planner responsible for coordinating the development of the REZ. It also sets out the intended network capacity (size), geographical area (location) and infrastructure that will make up the REZ, and enables and sets the scope of key legislative functions under the Act, including access schemes and REZ network solutions (referred to in the Act as ‘REZ network infrastructure projects’).

The declaration followed an assessment of feedback received during the draft declaration exhibition period from 17 September to 15 October 2021. As all points raised were addressed, no changes were made between the draft and (final) declaration order.

A stylised map of the specified geographical area of the REZ is included above for reference and accessibility purposes only. This stylised map does not form part of the declaration. The stylised map includes the existing 330 kV and 500 kV transmission infrastructure near and in the REZ as a geographical reference. You can also view the declared area in the Project Overview. You can download the GIS file of the Central-West Orana REZ geographical area here.

The Minister may amend the declaration to expand the specified geographical area of the REZ, increase the intended network capacity, specify additional generation, storage and network infrastructure, provide further details and specifications or correct a minor error.

Declaration amendment

The Central-West REZ was formally declared in November 2021 with an initial intended network capacity of 3 gigawatts (GW). Network capacity is the maximum amount of power that can be transferred from renewable energy generated and stored within the REZ to the NSW transmission system.

Initial amendment

The Central-West REZ was formally declared in November 2021 with an initial intended network capacity of 3 gigawatts (GW). Network capacity is the maximum amount of power that can be transferred from renewable energy generated and stored within the REZ to the NSW transmission system.

The Network Infrastructure Strategy for NSW identified a need to increase network capacity in the Central-West Orana REZ in response to increasing demand for electricity. The strategy outlined options to increase the network capacity of the Central-West Orana REZ from 3 GW up to 4.5 GW initially under Stage 1, and to 6 GW by 2038 under Stage 2. This supports modelling by the Consumer Trustee in its draft 2023 Infrastructure Investment Objectives Report showing more network capacity will be needed to meet NSW’s future energy needs as coal-fired power stations progressively retire.

To align with this requirement, the NSW Government amended the Central-West Orana REZ declaration in December 2023 to increase the intended network capacity to 6 GW. Stage 1 does not change the proposed transmission infrastructure that EnergyCo has been consulting on previously. Any future expansions to deliver Stage 2, would be subject to separate planning and regulatory approval processes including community consultation and environmental assessment under the NSW planning system.

Having the right amount of network capacity in the Central-West Orana REZ is critical to deliver the clean, affordable and reliable energy required to meet NSW’s net zero targets.

Recent amendment

In April 2024, the NSW Government updated the Central-West Orana REZ declaration to provide a more detailed outline of the overall network infrastructure for the REZ. This network infrastructure is crucial for connecting the REZ to the wider NSW electricity grid, ultimately benefiting consumers across the State.

Network infrastructure

As the Infrastructure Planner for the REZ, EnergyCo is responsible for ensuring that new network infrastructure is developed to connect the Central-West Orana REZ to the existing grid, delivering affordable electricity to NSW.

To achieve this outcome, EnergyCo is leading the delivery of the Central-West Orana transmission project, which received NSW planning approval in June 2024. This process involves engaging with the local community and key stakeholders, acquiring land and easements required for REZ network infrastructure, developing and overseeing the Environmental Impact Statement processes and running a competitive tender process to appoint a network operator to deliver, operate and maintain the REZ network infrastructure. EnergyCo is also responsible for developing an Infrastructure Planner Recommendation Report. This report plays a crucial role in securing the project’s regulatory approvals under the Act. The Consumer Trustee has accepted EnergyCo's recommendations and has authorised ACEREZ to carry out the project and Transgrid to undertake the enabling works.

EnergyCo will continue to work with Transgrid in its capacity as the State’s jurisdictional transmission planner and coordinate the delivery of complementary upgrades to Transgrid’s existing infrastructure network, including critical upgrades to Transgrid’s Wollar substation.

Access scheme

The Central-West Orana REZ Access Scheme is the first of its kind in the National Electricity Market. The Access Scheme was formally declared by the Minister for Energy on Monday 19 December 2022. Following recent consultation, an amended Access Scheme was declared on Friday 5 April 2024.

View the Central-West Orana REZ Access Scheme Declaration

The declaration is the primary statutory instrument for the Central-West Orana REZ Access Scheme. It operationalises the terms and conditions of the Access Scheme, which sets out how generation and storage projects can be granted access rights to planned and new network infrastructure within the Central-West Orana REZ.

For more information, visit Access schemes.