Breaking a run of a Thursday Release in late August over 3 consecutive preceding years, the AEMO released the 2026 ESOO on Tuesday 25th August 2026. Here's a first article, with links to news media coverage.
A year on from our 4-part series about the CIS, we take an updated look at the 89 projects awarded across the scheme's five NEM tenders — comparing what proponents have actually announced compared to the status AEMO assigns them for ESOO reliability modelling.
On Wednesday 24th June 2026, the AEMO published this draft Go-Live Plan for Project EnergyConnect Market Integration.
Dr Adrian Grantham from the AEMO has written this guest-authored post to provide an introduction into the functions of the organisation's Operational Forecasting team, the types of forecasts and other work they deliver, and the internal and external stakeholders they engage with.
About the AEMO’s Reviewable Operating Incident Report ‘Self-forecasting errors and frequency excursion on 19 August 2025’.
On 5 February 2026, the Minister for Climate Change and Energy announced a review of the governance arrangements of the Australian Energy Market Operator (AEMO).
The AEMO have today released its Q4 2025 QED report, with related headlines in the media about the report focused on lower average wholesale prices and a milestone in which renewables and storage supplied more than half of the NEM’s energy for the first time.
The AEMO have proposed a rule change to consolidate and streamline the NEM’s various compensation schemes, in an attempt to address some of the issues identified from the June 2022 market suspension.
Flagging (from the AEMO rule change request on 14th November 2025) the request to extend Notice of Closure to 5 years ... and to remind readers of thoughts already submitted to the Nelson Review panel about this.
Pre-dating AEMO’s Monday release of its 2025 TPSS, was AEMO’s Rule Change Request ‘Efficient and timely management of system security needs through the energy transition’.
On Monday 1st December 2025 (after it was flagged in some media articles) the AEMO released its 154-page '2025 Transition Plan for System Security'.
This afternoon we saw mainland frequency briefly step above its normal operating band for approximately 20 minutes — potentially the result of a data glitch. In this quick piece, we unpack some market dynamics while it unfolded.
A quick note to point readers here to the AEMO news update ‘AEMO progressing transitional system security services’ published today (Friday 24th October 2025).
A short note (on Wednesday morning 22nd October 2025) about the Severe Weather warnings (from WeatherWatch, and then from AEMO).
New unit-level availability data and other changes to the STPASA process are scheduled to go live from today.
A short post to note that the AEMO has released its 2025 ELI, the second such edition of this annual report.
Transmission Company Victoria (TCV) yesterday announced a two-year delay to the project delivery timeline for the VNI West project.
On Tuesday 15th April 2025, the AEMO published its draft report on 'Congestion Information Resource Guidelines', seeking feedback by Monday 19th May 2025.
As the next steps in implementing the AEMC's ISF Reforms, the AEMO has published: (a) on 7th April a consultation; and (b) on 17th April a HLIA.
On Monday 7th April, the AEMO commenced a consultation on the Constraint Formulation Guidelines - which touches on three different changes that some of our readers will find of interest.