About offshore wind

Victoria is building a thriving offshore wind sector, leading the way for Australia’s first offshore wind energy projects.

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Offshore wind

Offshore wind energy explained

How an offshore wind farm works? 

Offshore wind energy is generated by wind turbines placed in bodies of water, typically the ocean. Winds over water are stronger and more consistent than on land, and the turbines used are larger in size. This means that more electricity can be generated.

Undersea cables transport the electricity to an offshore substation, where a transformer steps up the voltage. High voltage undersea cables then transmit the electricity to an onshore substation where it is further processed so it can be connected into existing transmission infrastructure to power homes, industry and businesses.

To deliver offshore wind energy to Victorian homes we also need to make sure we have the right supporting infrastructure in place.

We need a dedicated port to construct and assemble the large and heavy turbines and other ports to support operations and maintenance.

Transmission infrastructure is also needed such as onshore transmission lines and substations.

Components of offshore wind farms:

  • Offshore turbines generate clean electricity from strong winds out to sea. They are larger and more powerful than onshore wind turbines. Offshore turbine blades can be more than 100 metres long and are supported by structures more than 200 metres tall.
  • Foundations secure turbines to the ocean floor. Foundations can be fixed-bottom (anchored to the seabed in waters up to 60 metres deep) or floating (moored to the seabed by cables in waters deeper than 60 metres).
  • Cables transport the electricity from the turbines to substations.
  • Offshore substations capture the power generated by the turbines and prepare it for transmission to shore.
  • Onshore substations connect the electricity supplied by offshore wind farms to the onshore grid. Substations can vary in type, size and layout. Typically, they will occupy six to nine acres and consist of two to eight buildings that are up to about 15 metres high. The site includes roads, fences and landscaping, and may also include an open yard.
  • Control systems manage the operation of the turbines, monitor the performance of the substructures and foundations, and ensure the safety of the entire system. These systems use advanced sensors and communication technologies to collect and analyse data in real time.

Why offshore wind? 

The waters off Victoria’s coastline have some of the strongest and most consistent winds in the world, accompanied by relatively shallow ocean depths.

This makes Victoria ideal for offshore wind energy.As we move away from coal, different energy sources need to work together to keep our system strong. Offshore wind works well alongside solar, batteries and onshore wind. It can generate power in the evenings and in winter, when we need it most.

Offshore wind energy is a new and valuable addition to our energy mix and renewable energy transition. It will help us achieve our renewable energy targets, and be an important part of Victoria’s electricity future.

The first 2 gigawatts of electricity generated by offshore wind could power 1.5 million homes.

The Victorian Government has a legislated offshore wind energy generation target of 9 GW by 2040.

Coordinating Victoria's offshore wind rollout

Offshore Wind Energy Victoria (OWEV) is responsible for coordinating the development of Victoria’s offshore wind industry.

It was established in December 2022 and is a division of the Department of Energy, Environment and Climate Action (DEECA).

Australia’s first offshore wind auction opened in August 2026 for projects off the Gippsland coast to bid for contracts to deliver Victoria’s first 2 GW of offshore wind energy generation – enough to power 1.5 million homes.

For more information on offshore wind energy, visit the Offshore Wind Energy Victoria (OWEV) website.

The role of ports in offshore wind

The Victorian Government has chosen the Port of Hastings as the main location for the construction and assembly of offshore wind infrastructure.

The proposed Victorian Renewable Energy Terminal will be a dedicated facility to receive, assemble, and deliver offshore wind components to offshore wind farms off the Victorian coastline.

Additional ports will be important for operations and maintenance. Ports such as Barry Beach Marine Terminal and Port Anthony, for example, could be suitable because they are close to the Gippsland offshore wind area.

Source: Victoria's offshore wind rollout map (Source: Offshore Wind Energy Victoria)