Project Marinus was established by TasNetworks and is being progressed with financial support from the Australian and Tasmanian Governments. Project Marinus is comprised of several related standalone projects:
- Marinus Link - a proposed 1500 megawatt HVDC underground and subsea electricity interconnector between Tasmania and Victoria
- Supporting transmission developments in Tasmania.
The proposed construction of Marinus Link has been formally recognised as a key component of Australia's fast-evolving National Energy Market.
TasNetworks is owned by the State of Tasmania, and is operated as a commercial business with assets of $3.5 billion. TasNetworks is also the jurisdictional planner in the National Energy Market for Tasmania.
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TasNetworks has already established contracts for the following work required to support the Design and Approvals phase of the project:
- technical, engineering and project management
- inter-regional transmission pricing
- regulatory investment tests for transmission
- economic modelling
- HVDC cable advisory
- marine reconnaissance and geophysical surveys
- cable route assessment
- system studies analysis
- project establishment and strategic advisory
- community and customer engagement
- environmental, land use planning and heritage
- land access, acquisition and easement negotiation
It is anticipated that contracts for the following work will be made available, and progressed during, Design and Approvals phase:
Marinus Link and North West Transmission Developments:
- Geotechnical investigation services (various packages – Vic and Tas)
It is anticipated that contracts for the following major works packages will be made available during the Design and Approvals phase, for progression during the Construction phase (subject to the Final Investment Decision, expected by early 2024):
Marinus Link (Vic and Tas):
- Converter site establishment (two packages – Vic and Tas)
- HVDC Voltage Source Conversion converter station design, manufacture, transportation, supply, installation and commissioning (single package – Vic and Tas); including design and construction of converter buildings
- HVDC submarine cable design, manufacture, transportation, supply, installation and commissioning (single package), including horizontal directional drilling (Vic and Tas)
- HVDC underground land cable design, manufacture, transportation, supply, installation and commissioning (single package, excluding civil trenching works), including horizontal directional drilling (Vic and Tas)
- Land civil trenching works (Vic only)
Based on knowledge of market capability, TasNetworks anticipates that each of the HVDC works packages will be led by international suppliers, with the converter station site establishment and land civil trenching work packages to be led by suitably qualified and experienced Australian civil works contractors.
North West Transmission Developments (Tas only):
- Design and construction of new HVAC 220 kV transmission lines (single and double-circuit, total length approximately 220 km, up to four packages)
- Design and construction of new switching stations (three of)
- Design and construction of new substations (two of)Upgrades to existing substations (three sites)
For the North West Transmission Developments, it is TasNetworks’ expectation that each of the works packages will be led by suitably qualified and experienced Australian suppliers and contractors. Sourcing of key materials (e.g. conductors, steel) from within Australia will be viewed favourably by TasNetworks.
Depending on the nature of the procurement activity, TasNetworks may elect to conduct the procurement process in two stages - expression of interest / pre-qualification, followed by request for tender.
TasNetworks recognises that the project will provide significant opportunities for suitably qualified and experienced Australian manufacturers, suppliers, contractors, consultants and other service providers to participate, directly or indirectly, in the project.
Across all works packages, the ability to effectively manage contract interfaces and scheduling requirements will be critical to the success of the project.
Tasmanian Networks aim to reach a Final Investment Decision in early 2024, with design, manufacturing and construction to commence shortly after that decision is made.
The proposed 1500 MW capacity of Marinus Link is planned to be built in two 750 MW stages, with commissioning of each stage proposed to be separated by two to three years. The first stage is planned to be ‘shovel ready’ by 2024 and commissioned by 2028.
The full capacity of Marinus Link (stage 1 and stage 2) could be in service by as early as 2030.
HOW TO REGISTER AN EXPRESSION OF INTEREST (EOI)
- To submit an EOI, companies must have an ICN Gateway company profile. Information on how to register your company on ICN Gateway is detailed below.
- This is an initial, generic EOI submission only. All companies who submit an EOI will be included in information presented to companies who are short listed to bid for this Project.
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ICN GATEWAY COMPANY REGISTRATION
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