Jun 2020
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On behalf of the Australian Government, the Australian Renewable Energy Agency (ARENA) committed $5 million in funding to TransGrid to conduct a detailed feasibility study for the project.
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Jul 2020
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In its 2020 Integrated System Plan, AEMO identified the Central-West Orana REZ Transmission Project as a critical project and provided updated costings for the project.
The ISP estimates that the transmission project component of the Central-West Orana REZ has a cost of between $450 million and $850 million, with a modelled cost of $650 million.
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Dec 2020
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The Central-West Orana REZ Transmission Project was declared Critical State Significant Infrastructure by the New South Wales Government.
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Mar 2021
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The NSW Government released the Central-West Orana REZ Access Scheme Issues Paper for public consultation. The Paper identifies the key features of the REZ's transmission project.
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Sep 2021
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TransGrid submitted a Scoping Report and requested the NSW Department of Planning, Industry and Environment Secretary's Environmental Assessment Requirements for the Wollar Substation upgrade project.
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Oct 2021
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The NSW Department of Planning, Industry and Environment issued Secretary’s Environmental Assessment Requirements (SEARs) for the Wollar Substation upgrade portion of the project.
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Sep 2022
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The scoping report for the project was released and a request for SEARs for the transmission portion of the project was made.
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Oct 2022
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SEARs were issued for the project.
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Apr 2023
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EnergyCo selected ACE Energy, comprising ACCIONA, Endeavour Energy and Cobra, as the preferred bidderr for the project. The consortium will design, finance, build, operate, and maintain the REZ network infrastructure through an Availability-based Public Private Partnership-like contract.
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May 2023
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EnergyCo opened a Registration of Interest (ROI) for Independent Certifier Services for the project, closing 30 May.
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May 2023
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The NSW Network Infrastructure Strategy for NSW, published by EnergyCo, provided an updated scope and cost for the project. The project, which was previously modeled at a cost of $600 million in the 2020 ISP, now has an estimated cost of $3.2 billion and a delivery date of 2027/28.
Additional future options were also released including a new 330 kV circut from Uungula to Burrdendong A, and a new 500 kV circuit from Uungula to Tooraweenah.
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Sep 2023
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The NSW Department of Planning and Environment placed the project's Environmental Impact Statement on public exhibition, closing 26 October.
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Dec 2023
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The New South Wales Government Energy Corporation (EnergyCo) entered into a ‘commitment deed’ with the ACEREZ consortium to deliver and operate the project. The commitment deed enables the consortium to seek approval to design, finance, build, operate, and maintain the REZ network infrastructure over the next 35 years.
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Jan 2024
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EnergyCo announced it will accelerate the application process to allocate the initial tranche of access rights for generators seeking access to the new Central-West Orana REZ network commencing in Q1 2024.
The NSW Government is implementing reforms to enable EnergyCo to establish and administer the expedited process prior to financial close of the REZ transmission project this year. For future allocations of access rights, the NSW Government intends to use a tender process run by AEMO Services.
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Apr 2024
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ACEREZ Partnership submitted an application for a NSW transmission operator's license for the purpose of operating the transmission system for the REZ network infrastructure project associated with the Central West Orana REZ.
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May 2024
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A Scoping Report was published and a request for Secretary’s environmental assessment requirements (SEARs) was issued for the Mount Piper to Wallerawang section of the NSW Central-West Orana REZ Transmission Project.
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May 2024
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The Clean Energy Finance Corporation has announced a $490 million concessional debt finance agreement with EnergyCo for select expenditure related to the delivery of new grid infrastructure in the NSW Central-West Orana REZ. The investment, allocated from the Federal Government’s $19 billion Rewriting the Nation Fund, will enable EnergyCo to separately finance capital expenditure related to land acquisitions within the CWO REZ and purchase biodiversity offsets.
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Jun 2024
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The NSW Minister for Planning and Public Spaces approved the project for development, subject to conditions.
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Jul 2024
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The Independent Pricing and Regulatory Tribunal released a draft report for public consultation, setting out its draft recommendation that the Minister for Energy should grant a Transmission Operators license to the ACEREZ Partnership. The report also proposes terms and conditions for inclusion in a prospective license. Consultation closed on 2 August.
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Aug 2024
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The Federal Government granted environmental approval of the project, subject to conditions.
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Sep 2024
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The New South Wales Government granted ACEREZ a transmission operator license for the Central-West Orana (CWO) Renewable Energy Zone. The transmission operator license will enable ACEREZ to design, construct, own and operate the CWO transmission system.
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Feb 2025
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EnergyCo commenced an Expressions of Interest (EOI) process seeking service providers across six categories to support the delivery phase of the project, closing on 21 February. Categories include Commercial and Finance, Delivery – Construction, Project Controls, Delivery – Technical, Communications and Stakeholders (including First Nations Support) and Connections, Operations and Commissioning.
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