Expected RTS for Yallourn 2 slips a month – now offline until 24th January 2026
On Friday 14th November 2025, the expected return to service for YWPS2 was pushed back another ~6 weeks (now offline till Monday 24th January 2026).
All Posts
Reflections from our presentation to the CEC this week: A stocktake on the CIS
Linton and I had the pleasure of speaking to the CEC on Wednesday, this short article shares a couple of slides from the presentation and a list of questions we're still pondering about the...
AEMO frequency monitoring report provides some details of frequency event (due to self-forecast glitch) on 19th August 2025
Adding to the list of articles we've collated about the frequency disturbance on Tuesday 19th August 2025, we're copying in what AEMO published in its 2025 Q3 monitoring report about the glitch.
AEMO publishes report: ‘Frequency Monitoring–2025 Q3’
On or before 13th November 2025, the AEMO published its ‘Frequency Monitoring – Quarter 3 2025’ report:
Trying to understand the errors in ‘Initial Supply’ (on Tue 11th and Thu 6th November) as the source of the gremlins
In this article we take another step in trying to understand the source of the gremlins (on Thu 6th Nov 2025 and Tue 11th Nov 2025) that seemed to infect the dispatch process -...
How often have we seen these gremlins, injecting ‘phantom’ demand and driving frequency high? … a 1st pass
Following two instances of apparent data glitches (injecting 'phantom demand' and) driving frequency high, here's a collation of some other times (we've written about) where similar has happened.
AEMO (and the BOM) warning about possible ‘Severe Space Weather’ (at G4, possible G5) in next ~24 hours
One WattClarity reader has pointed us to AEMO and BOM warnings about space weather - noting that 'G4 geomagnetic storm conditions are currently being observed. G4 with a chance for G5 is expected on...
AEMO directs again in South Australia for Minimum System Load – Wednesday 12th November 2025 (second day in a row)
For the second day in a row, AEMO has issued direction (to Torrens Island BESS) due to concerns about Minimum System Load in South Australia - with today's on Wednesday 12th November 2025.
More, about noisy MSL warnings for South Australia … and an Actual MSL2 and AEMO Direction on Tuesday 11th November 2025
Second article about forecast (and actual) Minimum System Load conditions in South Australia ... and Directions as a result (on Tuesday 11th November 2025).
Kogan Creek trips (on Tuesday morning 11th November 2025) … and ironically helps frequency
Three quick notes, after seeing the trip of Kogan Creek on Tuesday morning 11th November 2025.
Guest Authored Posts
Runway cost allocation – ready for liftoff?
Allan O'Neil unpacks a proposal under consideration by the AEMC to apply “runway” cost allocation to contingency FCAS, explaining how this could materially change who pays for frequency security in the NEM.
What the hail is happening with Brisbane’s weather?
Anthony Cornelius from WeatherWatch explains the climate drivers behind Southeast Queensland’s unusually intense 2025 hail season — context that matters for those tracking how extreme weather is evolving and influencing the energy market.
Detailed Analysis
Case Study (part 1) of low % VRE NEM-wide on 3rd and 4th July 2023
A brief article as a first Case Study looking at Mon 3rd and Tue 4th July 2023, in conjunction with the compilation of GenInsights Quarterly Updates for 2023 Q3.
Demand Response as Market Participant: Square Peg in Round Hole?
A year ago we reviewed the market outcomes of wholesale demand response (WDR) in the NEM. It’s been 2 years now, providing a new milestone from which to review participation and impact. Can we...
Long or short on storage? A look into price signals for duration
Dan Lee looks into utility-scale storage in Queensland - including the need for megawatt-hours, the state of the build-out, and the current market price signal for duration.
GenInsights Quarterly Update for Q2 2023 released
A quick note to mark the the release of GenInsights Quarterly Update for Q2 2023 last week.
What inputs and processes determine a semi-scheduled unit’s availability
It is indispensable to understand how the semi-scheduled unit availability gets produced to optimally manage the critical inputs and comprehend dispatch outcomes. This article explains the key inputs and processes, focusing on the dispatch...
Another research paper into solar and wind droughts in Australia
A quick note at another research paper (focused on an area of interest to us) that's crossed our field of vision.
Digging further into ‘Aggregate Scheduled Target’, to understand what Dispatchable Capacity is actually required
In conjunction with the analysis done to complete GenInsights Quarterly Update for Q1 2023 (released today), here's 14 years of daily data of 'Aggregate Scheduled Target' that might help to illustrate the aggregate requirement...
GenInsights Quarterly Update for Q1 2023 released
A quick note on Wednesday 31st May 2023 to mark the release of GenInsights Quarterly Update for Q1 2023.