On Monday 22nd June 2026 our team noticed several media articles about a new case, being brought before the Federal Court of Australia (relating to Callide C). So we've added this article, to document.
A short article to record simultaneous planned outages at Callide C3 and C4 ... doesn't happen often.
A short note with a snapshot from the ez2view ‘Notification’ widget alert generated with Callide C5 beginning its return to service journey at 10:21 (NEM time) on Tuesday 20th January 2026.
A second statement was issued by CS Energy with respect to the double outage at Callide C3 and C4 - this statement on Monday afternoon 19th January 2026.
Callide C3 has returned to service today following last week’s control system trip that took both C units offline, while C4 remains out of service with its return currently expected tomorrow.
A short article on Sunday evening 18th January 2026 speaking to a slight delay in expected RTS for Callide C3 and C4.
At 14:30 NEM time on Friday 16th January 2026 the CS Energy organisation issued this ‘Statement on outage of Callide C units’ which I’ve copied in here as a service to our readers.
Top 10 units with deviations in support of, and in opposition to, the frequency need around the trip of Callide C units 3 and 4.
The trip coincided with the drop in frequency, which happened at the start of the dispatch interval.
Following AEMO's publication of 'next day public' data set, we take a first quick look at rebidding on the Callide site around the time of the coincident trip of C3 and C4 on Thursday 15th January 2026.
In the most recent ST PASA data update (i.e. the one published for 21:00 Thursday 15th Jan 2026) the expected return to service for both Callide C units have been pushed back.
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)
Following this update on LinkedIn from CS Energy on Thursday 30th October 2025, we summarise outages at Callide B2 (two outages) and Callide C4 (one outage).
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.
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 at the ‘Energy Nation 2025’ conference on Wednesday 24th September 2025...
A short article to note that Callide C3 came back online in the early hours of Sunday morning 1st June 2025.
A short note to flag this 3-day extension to the unplanned outage at Callide C3.
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).
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.
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.