Updated list of events on 25th May 2021 that we’ll be investigating – time permitting
For ease of future reference, here is the list of events that occurred on Tuesday 25th May 2021 … as we (currently) see them.
For ease of future reference, here is the list of events that occurred on Tuesday 25th May 2021 … as we (currently) see them.
A number of things happened late today – with the trip of DDPS1 (only declare credible contingency earlier in the day) giving more impetus to spot price volatility in the QLD and NSW regions already facing tight supply/demand following the Callide catastrophe and LOR1 in NSW.
First short article for Tuesday evening following report from CS Energy that the return to service
James Tetlow from Overwatch Energy explains an important rule change that was recently introduced that has seen a significant increase in the civil penalties for generators who fail to follow operating rules.
This evening I’ve taken a first pass look at how QLD generators bid on Tuesday 25th May 2021, in response to the tight supply/demand balance created by the Callide C4 outage and cascade of events.
Whilst there were many things that went wrong on Tuesday 25th May 2021 (last week), guest author Allan O’Neil highlights that there were at least 4 things that went right – contributing to a much less severe outcome than would otherwise have been the case.
Carl Daley from EnergyByte, provides more insight into the events of last Tuesday, which culminated in widespread blackouts throughout Queensland.
On Friday evening (28th May) and again this evening (Sun 30th May) my phone buzzed plenty of times – due to price volatility, and also alerting on low IRPM (enabled with Callide units offline, and low wind harvest at peak demand time).
Two brief (but important) observations made possible with a chart published on RenewEconomy with respect to the Hornsdale Power Reserve.
A deeper look at the frequency data (our own, and also from some others) reveals a number of other interesting things about what happened on Tuesday 25th May 2021 in Queensland.
My evening reading of an ABC news article (about Callide C) released this afternoon suggests a long, long and expensive outage for Callide C4.
Normally this would be part of a much more complete article adding to WattClarity’s growing coverage of the major power system events in Queensland following the incident at Callide C Power Station. However I for one find it easier to…
Sharing 7 of the ‘Headline Questions’ we’re pondering, as we bury ourselves in the data surrounding the events that happened on Tuesday 25th May … some of which will have long-lasting implications (not to mention detailed investigations).
Following yesterday’s incidents (plural!) we see prices forecast to be high this evening in QLD as well.
Part 5 in an expanding series, looking at what happened in QLD on Tuesday 25th May 2021 – this one looking at system frequency.
First update, day after the event, shows a cautious (initial) approach to returning the 4 units at the Callide site back to service.
Last night, in addition to the dramas unfolding in the QLD region, we set a new record for coincident NEM-wide wind production – eclipsing the prior record from exactly 6 weeks ago.
Third short article this evening, after it looks like we’ve escaped from a tight supply/demand balance (reasonably) unscathed.
Looks set to be a very tight supply/demand balance this evening in Queensland. Here’s hoping everything goes right for the AEMO Control Room!
A quick snapshot from NEMwatch at 14:20 today highlighting the loss of approximately 2000MW of demand this afternoon – dropping the level of Scheduled Demand down to 3,775MW: The AEMO Market Notice highlighted says: ——————————————————————- MARKET NOTICE ——————————————————————- From : …