2022 Integrated System Plan (ISP)

The 2022 ISP provides a comprehensive roadmap for the National Electricity Market. It draws on extensive stakeholder engagement and power system expertise to develop a roadmap that optimises consumer benefits through a transition period of great complexity and uncertainty.  

The ISP and its optimal development path support Australia’s highly complex and rapid energy transformation towards net zero emissions, enabling low-cost renewable energy and essential transmission to provide consumers with reliable, and secure and affordable power. It serves the regulatory purpose of identifying actionable and future ISP projects, as well as the broader purposes of informing market participants, investors, policy decision makers and consumers.

The 2022 ISP, including all appendices and associated supporting materials are available below. In December 2023, AEMO published an update to the 2022 ISP alongside the release of the Draft 2024 ISP.

Update to the 2022 Integrated System Plan

Following completion of the Regulatory Investment Test for Transmission (RIT-T), a Transmission Network Service Provider (TNSP) may seek written confirmation from AEMO that the preferred option from the RIT-T remains aligned with the optimal development path in the most recent ISP. This process is referred to as the feedback loop.

In accordance with the National Electricity Rules, AEMO identified that an ISP update was necessary to allow material changes identified in the 2023 Inputs, Assumptions and Scenario Report (IASR) to be considered by AEMO when assessing actionable ISP projects in the feedback loop.

The Draft ISP, all associated draft materials and details of the consultation process, including all stakeholder submissions are available on the 2022 ISP Consultation page.

The input, assumptions and scenarios and ISP Methodology used to develop the 2022 ISP are also available.

Key milestones relating to the 2022 ISP are shown below.