More unplanned outages than would be desired, at YWPS3, since the Planned Major Outage

We wrote yesterday about how ‘Yallourn unit 1 comes offline for the ‘performance improvement’ planned outage’.

1)  Earlier articles in the series noted how YWPS2 and YWPS3 had already received their Major Planned Outages aimed at doing what’s possible to improve the performance of these old units.

2)  Yesterday’s article had noted that we’d been asked by one of the subscribers to our GenInsights Quarterly Updates report series whether these performance improvement outages were seen to have delivered a positive result.

That’s something we’re undertaking to evaluate more thoroughly in the new editions of the series.


Unfortunately overnight we saw YWPS3 come back online briefly, but then trip again – as noted in these snapshot of ez2view ‘Notifications’ messages configured on a dashboard copy of the software to look at movements on significant units (including the coal ones):


This morning we’ve seen a disconcerting pattern of red (i.e. unplanned) outages for YWPS3 in recent history of the ‘Generator Outages’ widget in ez2view, as highlighted here:


That’s 4 separate, but likely related, unplanned outages in a short space of time for YWPS3.  Looking further back in time via the ‘Bids & Offers’ widget in ez2view, we see 3 years of bid history for the unit here:


The Major Planned Outage from August to October 2023 is highlighted on the display.

1)  Both before and after that period, we can see a number of outages.

2)  These outages can’t be definitively apportioned as either planned or unplanned using just the data displayed in the image above.

3)  However on first indications the picture does not look great, in terms of performance improvement.


More later, in future editions of GenInsights Quarterly Updates .

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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