Callide C3 starts up, after 518 days offline – on 1st April 2024 (no, that’s *not* an April fools tall tale)

Earlier today, I’d glanced quickly at the ‘Generator Outages’ widget in ez2view and seen something that jumped out at me … the MT PASA DUID Availability data for the CPP_3 unit had been adjusted.

… remember that this unit has been offline since 31st October 2022 following a cooling tower failure, and on 25th March 2024 we noted ‘Another slight slippage in return to service (RTS) expectation for Callide C3’ (with the return to service expectation being pushed back from 31st March, which is now yesterday, to next Sunday 7th April).


Changed status in the bid, from Sat 30th March

Around midday today, I was surprised at seeing ‘0 days’ in terms of return to service expectation in the ‘Generator Outages’ widget, but with no alert yet for the unit starting back up, I next turned to the ‘Forecast Convergence’ widget to see what might be visible there – with this snapshot for the 12:05 dispatch interval:


Remember that this widget allows the user to ‘look up a vertical’ in order to see ‘that other dimension of time

This window is zoomed in to only the most recent of runs (zoomed out it spans the past 3 years), so we can see that from the 15:00 data run on Saturday 30th March 2024 the expected return to service had been such that there would be 200MW available from Monday 1st April 2024.

I was curious to see what happened through the afternoon … and evidently I was not the only one, as some readers have already emailed me about what happened next …


Unit starting up from ~16:00 on Monday 1st April 2024

Later in the afternoon, my preset alerts (inside of the ‘Notifications’ widget in ez2view) – these were the first two to trigger (at ~16:05:20) based on InitialMW for the 16:10 dispatch interval:


Here’s a snapshot from the ez2view ‘Unit Dashboard’ widget at the 16:15 dispatch interval highlighting just the start of the return to service journey:




PS1 information from CS Energy on Tuesday 2nd April

On Tuesday CS Energy posted this update on LinkedIn here:


That update refers to more information in the article ‘Callide Unit C3 returns to service’ on the CS Energy News section of their website.

About the Author

Paul McArdle
One of three founders of Global-Roam back in 2000, Paul has been CEO of the company since that time. As an author on WattClarity, Paul's focus has been to help make the electricity market more understandable.

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