2025 - 26 Inputs Assumptions and Scenarios

AEMO delivers a range of planning and forecasting publications to inform decision making including the Electricity Statement of Opportunities (ESOO), the Gas Statement of Opportunities (GSOO) and the Integrated System Plan (ISP).

AEMO strives to ensure its planning and forecasting publications are of highest quality, with data that is fit for purpose and industry-reviewed and processes that are transparent. To build confidence in the forecasts, and help decision makers understand the outcomes, AEMO consults on and publishes its scenarios, inputs, assumptions and methodologies. Confidential information is withheld from public release, but is incorporated in the modelling conducted, if necessary, to deliver assessments that are as accurate as possible.

2025 Inputs, Assumptions and Scenarios 

AEMO is consulting on the Draft 2025 Inputs, Assumptions and Scenarios Report (IASR). Stage 1 of the Draft 2025 IASR was published on 11 December, with consultation submissions open until 11 February 2025. Stage 2 will be published in February 2025. The final 2025 IASR will be published in July 2025.