This year’s Transmission Annual Planning Report (TAPR) shows Transgrid’s progress in ensuring the transition to clean energy happens before coal-fired generators become unreliable or retire.

The modelling in TAPR 2023 suggests we need to deliver transmission projects even faster than previously expected. It also charts the destabilising effect of the rapidly decarbonising grid, including a much more volatile operating environment.

This Report shows how Transgrid is solving all of these issues. As the jurisdictional planner, operator and manager of Australia’s largest electricity transmission network, we have robust plans to ensure energy reliability, system security and operability throughout the energy transition. We will be ready for the moment the NSW power system needs to operate at 100% instantaneous renewables.

For enquiries about the Transition Annual Planning Report contact: tapr@transgrid.com.au

Executive summary

TAPR 2023 demonstrates the urgency of investing in energy reliability, system security and operability to support the energy transition.

The decline in coal generation and surging renewable energy generation are reshaping our power system – changing the way it must be built, managed and operated. TAPR 2023 shows the destabilising effect of this rapid energy transition. As Chapter 1 explains, the challenges of transitioning to a grid powered largely by solar and wind are profound. Our demand forecasts in Chapter 4 show spiking spot load areas, indicating future high summer and winter maximum demand.

This report shares Transgrid’s plan, underpinned by this year’s modelling, to both build this new type of grid and keep the lights on during transition by

  • Delivering large-scale transmission infrastructure to connect and share new renewable generation and storage with customers, as ageing coal generators retire (see Chapter 2). And actively pursuing innovative ‘non-network solutions’ as alternatives to conventional ‘poles and wires’ infrastructure to improve energy reliability and make costs as low as possible for consumers (see Chapter 3)
  • Investing in advanced tools and additional resources and training to plan, manage and operate a complex power system capable of 100% instantaneous renewable generation (see Chapter 5).

The decisions we make now can keep our options open for future development – or narrow the field of possibilities. Transgrid is committed to positioning Australia as competitively as possible, to succeed in a decarbonised global economy.



Marie Jordan, Executive General Manager - Network

Marie outlines how the TAPR is developed and how the information is used within the energy industry.

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Kasia Kulbacka, General Manager - Network Planning

Kasia discusses what the TAPR forecasts tell us about the velocity of the energy transition and how the energy transition is changing the grid.

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