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.
All Posts
Has it happened again … have gremlins invaded NEMDE and triggered a frequency excursion (Tuesday 11th November 2025)?
In what seems to be a repeat of what happened last week Thursday 6th November 2025, some strange (and large) changes in 'Market Demand in Victoria appear to have driven a frequency excursion on...
Angela’s article in AFR answers some of our "What’s up with Waratah BESS?" question
On Friday afternoon we asked the question ‘What’s up with Waratah BESS (unplanned outage till 3rd May 2026)?’. It was great to see (on Monday evening) Angela MacDonald-Smith answer some of these questions in...
Sunday evening trip at Callide C4, and wobbles coming back online
Taking a quick look - after our ez2view ‘Notification’ widget triggered an alert for what appears to be Callide C4 tripping from close to full load (Sunday 9th November 2025 at 21:26 NEM time)
A quick look at (plant-related) rebids for Waratah BESS from 19th October to 8th November 2025 (with PASA Avail 350MW)
Another in the series about Waratah BESS, we have a look at the unit's bids and operations over a 20-day time-range to midnight ending Saturday 8th November 2025.
A quick look at (plant-related) rebids for Waratah BESS to 19th October 2025 (during Hold Point 5 testing for full discharge)
In the next in the series about Waratah BESS, we have a look at a 9-day time-range to midnight ending Saturday 18th October 2025 via the ‘Bids & Offers’ widget in ez2view.
Belatedly noting that the AER published its PASA Compliance Bulletin and Checklist (back on Friday 29th August 2025)
Relevant to today's questions, we belatedly note now that it was back on Friday 29th August 2025 that the AER published its PASA Compliance Bulletin and Checklist.
An updated longer term trend (and tabulation) of operations at Waratah BESS
Almost exactly 3 months ago we posted a ~12 month chronological record of the history of Waratah BESS. Due to observations today (and questions and conversations leading from them) it was worthwhile to update...
Some sizeable cycles in ‘Market Demand’ in South Australia on Thursday 6th November 2025
It’s probably worth (also) recording an event that happened later in the afternoon on Thursday 6th November 2025 - some sizeable cycles in Market Demand in South Australia
What’s up with Waratah BESS (unplanned outage till 3rd May 2026)?
Today we see that, for the WTAHB1 unit in the MT PASA DUID Availability data set, there's now an unplanned outage for Waratah BESS extending well off the page.
Guest Authored Posts
24 GW in 24 months, a race against time for the NEM
Following his presentation at All-Energy in Melbourne last week, David Dixon reports on the state of the NEM's ambition to reach 82% renewables by 2030.
The implications of the Solar Sharer Offer (SSO) and Default Market Offer (DMO) review outcome on energy sellers
In this guest-authored article, Connor James explains the upcoming changes to the DMO, including the much publicised Solar Sharer Offer (SSO), and potential implications for energy sellers in NSW, SEQ, and SA.
Detailed Analysis
Adoption and use of dispatch self-forecasting for solar units, Q1 2025
47% of dispatch intervals for semi-scheduled solar units are seeing a self-forecast used. When there are gaps, was the unit suppressed?
Is the price right? A historical exploration into the NEM’s price cap
Dan dives into the history of the NEM’s market cap and explores how high-end prices contribute to regional settlement costs and cap payouts.
Adoption and use of dispatch self-forecasting for wind units, Q1 2025
We summarise how wind units are using self-forecasting to-date. The analysis leads us to consider where upcoming market change may lead the industry.
Four days in the NEM in four minutes
Dan shares a short time-lapse video which demonstrates four days worth of activity in the NEM, highlighting the impact of network congestion in QLD and NSW.
How did Cyclone Alfred impact electricity demand?
By day-end on the Friday the 7th demand levels were down more than 40% in the Gold Coast. Other areas were also impacted.
Three headline observations, about the use of proxies for System Frequency in Frequency Control mechanisms
Various authors have shared articles about frequency, frequency control and Regulation FCAS in recent times (including 6 from Linton). Here's three things that jumped out to me in these pieces of analysis.
Is VRE forecastable? (Part 1 in what might be a series)
Over many years we've invested deeply in analysing the nuanced answer to the question 'Is VRE Forecastable?'. This article (which has almost been posted many times before) is triggered today by yet one more...
NEMDE nightmares – parallel pathways and clashing constraints
Prompted by a question by a client in a training session for a new ez2view user, guest author Allan O'Neil has written 2,940 words to explain the price outcome in one particular dispatch interval...