Sharp mainland frequency drop, with trip of CPP_4 on Sunday evening 26th October 2025
The Callide C4 unit tripped from 420MW in the 5 minutes to 18:36 (NEM time) on Sunday evening 26th October 2025, delivering a sharp drop in mainland frequency.
Callide C
Belatedly recording the QLD LNP’s comments about ‘coal for decades’ in September 2025
I alluded to the following comments in Wednesday’s article about the possible early closure of Gladstone Power Station … though we did not have time to note them at the time. We were not...
Callide C back online, Sunday 1st June 2025
A short article to note that Callide C3 came back online in the early hours of Sunday morning 1st June 2025.
Unplanned outage at Callide C3 extended by 3 days – to Monday 2nd June 2025
A short note to flag this 3-day extension to the unplanned outage at Callide C3.
Callide C out of Voluntary Administration
A short not tying together several different notes about Callide C - the part buyout by 7GI and resurrection of out voluntary administration (and outage on C3).
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.
Do we have enough gas to wait until nuclear comes along?
Tristan Edis of Green Energy Markets discusses the practicalities of the gap that must be filled by the gas sector under the nuclear power timeline proposed by the Federal Opposition.
Another long forced outage at Callide C3 … April 2025
First article about the latest long forced outage for Callide C3 - beginning April 2025.
Frequency drop with trip of Callide C3 on Friday 4th April 2025
A quick record of unit trip at CPP3, and associated frequency drop, on Friday 4th April 2025.
AER announces $9M fine for Callide Power Trading (with respect to 25th May 2021 explosion/incident)
A short note following the AER announcement (Tue 4th Feb 2025) that ‘Callide Power Trading penalised $9 million for not meeting performance standards’.
Frequency drop coincident with trip of Callide C3 unit, on Wednesday morning 20th November 2024
A short note to flag the apparent trip of Callide C3 just prior to 06:35 (NEM time) on Wednesday 20th November 2024.
More changes to the (re)commissioning schedule for Callide C4
Two weeks after our last look at the Return To Service progress at Callide C4, here's a quick update as at Friday 20th September 2024.
Ninth time is the charm: Callide C4’s return was another example of an overly optimistic timeline in the NEM
A chart showing the countdown to expected RTS for Callide C4, compared to the actual outage timeline.
Callide C4 offline again, as planned–but outage extended. Have they found something?
A short update (on Friday 6th September 2024) about Callide C4, which has come off for a planned outage as part of its (re)commissioning process.
Return to service commences for Callide C4 on Friday 30th August 2024 (after 1193 days offline)!
It's Friday 30th August 2024 and Callide C4 has commenced its return-to-service (and re-commissioning), after an outage lasting 1193 days
Callide C3 returns to service, a couple days earlier than schedule
After a forced outage lasting almost 4 weeks, Callide C3 came back online Wednesday evening 21st August 2024.
Callide C3 offline until expected return to service on Monday 26th August 2024
A short initial article, 5 days after Callide C3 came offline again for another forced outage ... during a period that's seen multi-region spot price volatility.
Two news updates from CS Energy on Wed 17th July 2024 … the (final) Brady Report (about Callide C4), and the Hartz EPM Report (on the Cooling Towers)
On Wednesday 17th July 2024, CS Energy released the Brady-Heywood report (about Callide C4 failure on 25th May 2021) and the HartzEPM Report (about CallideC3 failure on 31st Oct 2022) ... and an Action...
One more delay to Return-to-Service for Callide C4 … another 40 days added to the outage
In the last MT PASA DUID Availability data update for Friday 12th July 2024 the return to service expectation for the repaired Callide C4 unit has been delayed again another 40 days ... now...
CS Energy releases most recent draft of the ‘Brady Report’
CS Energy has released the latest draft of the ‘Brady Report’ - a draft Executive Summary, a draft Part A (Technical) and a draft Part B (Organisational)