Nexa Advisory welcomes the opportunity to share our views and insights on AEMO’s Draft 2025 Inputs, Assumptions and Scenarios Report (IASR) Stage 1.
The Integrated System Plan (ISP) remains a critical planning and system design roadmap for the National Electricity Market (NEM) and a vital tool which informs investors, policy makers and broader industry as we progress Australia’s clean energy transition. However, given recent contention around this roadmap, there is a clear need for AEMO to improve the robustness of its modelling to deliver a high conviction forward view of the energy system and ensure the lowest-cost pathway to achieve this.
It has become clear that more robust assessment of future states of the world is needed in the ISP – through its Methodology, scenarios, and inputs and assumptions. We consider there are two key areas where this is most needed, and suggest:
- AEMO must consider the interaction between inputs and assumptions, and improvements to Methodology – namely the improved consideration of demand-side factors
- AEMO must not downplay the role of outages for coal-fired generators as they approach end of life
Read our submission here: Nexa Advisory – IASR Stage 1 submission