Yesterday we wrote about ‘AEMO oscillates warnings – possible need to intervene in NSW on Thu 25th Sept 2025 for System Strength reasons’ … :
1) with that article noting that Mt Piper Unit 2 was slated to come offline yesterday evening
… and we’ve already noted here that this did indeed happen
2) and the article (and title) updated after publication to highlight that the the AEMO has oscillated the warnings about a shortfall in System Strength in NSW.
But this article pertains to ER03, with the same two widgets used to highlight a couple things as with the article about MP2….
What does the ‘Forecast Convergence’ widget show?
Firstly with the ‘Forecast Convergence’ widget in ez2view we see the following:
With this widget:
1) Remember that the ‘Grid’ view in ‘Forecast Convergence’ allows one to ‘look up a vertical’ in order to see ‘that other dimension of time’;
2) With the widget now having more functionality to delve into unit availability* in the new PD/ST PASA timeframe, due to the new PDPASA/STPASA data published by AEMO from 31st July 2025
* even for Semi-Scheduled assets
(a) hurrah (at least in PD/ST PASA),
(b) albeit not yet in MT PASA DUID Availability!
3) That picture might help explain both:
(a) The oscillations noted here; and also
(b) The AEMO latest update on the possible time at which they might need to intervene.
What does the ‘Bids & Offers’ widget show?
Now we’ll turn to the ‘Bids & Offers’ widget, again to try to see something in the rebid reasons that might suggest why the unit needs to come offline overnight:
As was the case with the MP2 bids and rebids, there’s nothing that seems definitive to me in a quick scan … though it is apparent in the output profile that the unit’s been suffering some challenges over the past couple weeks.
In the case of this unit, it’s currently expected to be back by next Tuesday 30th September 2025.
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