The Australian Energy Market Commission (AEMC) has published a consultation paper for its review of all aspects of the regulatory framework underpinning the Integrated System Plan (ISP), as part of our comprehensive package of work examining Australia's electricity transmission planning.
The ISP is produced every two years by the Australian Energy Market Operator (AEMO). It identifies electricity infrastructure investment required over at least a 20-year horizon that best supports the long-term interests of consumers as defined by the National Electricity Objective. This includes consideration of price, reliability, security and emissions reduction.
The ISP has become a foundational and trusted source of advice for the market, informing transmission investment decisions worth billions of dollars, regulatory processes, and jurisdictional planning programs.
AEMC Chair Anna Collyer said the review is an opportunity to ensure the ISP framework remains fit for purpose as the energy system undergoes unprecedented change.
"The ISP plays a central role in coordinating major transmission investment during the transformation of our electricity system," Ms Collyer said.
"Given its broad influence on investment decisions and confidence in our electricity network, it is essential that the framework remains a trusted source of advice.
“This review provides an opportunity to consider and affirm the ISP’s purpose and role in supporting the transition of the energy system, ensuring it maintains the confidence of stakeholders and continues to be fit for purpose,” she said.
The AEMC is required to complete a review of the ISP framework by 1 July 2027 under the National Electricity Rules.
The review will potentially examine the ISP framework, including the application of the Regulatory Investment Test for Transmission to actionable ISP projects, ISP content, methodology, governance and dispute resolution.
Through the consultation phase, the AEMC will refine the scope and priority areas for this review and welcomes stakeholder feedback on where the focus should be.
Written submissions on the review consultation paper are due by 19 February 2026. The AEMC will also seek feedback through future public forums and industry briefing sessions.
The AEMC is also undertaking a rule change examining proposed changes to how jurisdictional policies and system costs are treated in the ISP. A draft determination for the rule change is due by 19 April 2026.
Further information on the ISP Review can be found on the project page of our website.
Media: Jessica Rich, 0459 918 964, media@aemc.gov.au