Low IRPM eventuates (as low as 10.89%), as expected, on Tuesday evening 18th June 2024 .. reaching 120 minutes

As forecast this morning, our phones were running hot this evening with a series of SMS alerts notifying us of a long run of low IRPM conditions that began at the 17:30 dispatch interval and has continued through to 19:25 as I hit ‘publish’.

Here’s a capture of that same table in NEMwatch as used in yesterday evening’s post, showing all dispatch intervals up until 19:00, when the image was captured:


I’ve particularly highlighted the 18:25 dispatch interval, at which two highlights for the evening are evident:

1)  The NEM-wide ‘Market Demand’ hit what seems to have been the high-point of 31,842MW; and

2)  The NEM-wide IRPM hit the lowest point of 10.89%

Unfortunately we did not capture this exact dispatch interval (was on another call at the time) but here’s the 18:10 snapshot which shows the overall state of energy supply:


From this we can see:

1)  Regional levels of Market Demand’ above the ‘green zone’ … particularly in TAS

2)  Yield from Large Solar had dropped to almost 0MW by this time on a winter’s evening

3)  Aggregate yield from Wind was only ~1,000MW … so lower than yesterday evening and well below average

4)  We know that there are several coal units out:

(a)  We’d noted on Friday that ER04, CPP_4 and TNPS1 were all off on unplanned outages.

(b)  We’d noted earlier today that MP1 had come offline overnight for repair of a boiler tube leak

(c)  YWPS1 and GSTONE4 are also off for planned maintenance.


Interesting times!


Thankfully, at least, Collector-to-Yass is back

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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