And so the daily solar bedtime story continues … on Wednesday 2nd June 2021 (with 4 x Callide units off, etc…)
Only two dispatch intervals (thus far?) of extreme pricing tonight for QLD and NSW (Wed 2nd June 2021). Here’s the first one…
2021
Ten Years of Performance History for Callide C4, from the GSD2020
In order to assist discussions on social media about what’s been happening with Callide C4 over the past 10 years, using the GSD2020 I’ve published some actual detailed performance metrics.
AEMO releases Preliminary Report: Trip of multiple generators and lines in Queensland and associated under-frequency load shedding on 25 May 2021
The AEMO has released its 22-page Preliminary Report into the Callide C4 Catastrophe and the subsequent events.
Initial look at System Strength constraints (curtailing north QLD Solar and Wind) in Event 3 on Tuesday 25th May 2021
We’ve started exploring the constraint data from the QLD region for back on Tuesday 25th May 2021 (with the Callide C4 catastrophe) and here’s some initial information.
Some good information about what happened with Callide C4 inside the AFR today
A note of thanks to Mark Ludlow at the AFR for the compilation of some great initial information about what happened at Callide C4 unit just over a week ago (on Tue 25th May 2021).
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.
Price Volatility (now a regular evening event for QLD and NSW) on Tuesday 1st June kicked along by Darling Downs outage.
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.
Delayed Return to Service for Callide B1, B2 and C3
First short article for Tuesday evening following report from CS Energy that the return to service
10 million reasons why we need to talk about NEM generator operations
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.
First pass review of bidding behaviour on Tuesday 25th May 2021 in Queensland, after Event 2
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.
Plenty of things went wrong in Queensland last Tuesday, but some very important things went right
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.
Callide C Catastrophic Failure
Carl Daley from EnergyByte, provides more insight into the events of last Tuesday, which culminated in widespread blackouts throughout Queensland.
Prices Spike on Sunday 30th May with low NEM-wide IRPM (without 4 Callide units, and low Wind Production)
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).
Hornsdale Frequency data seems to confirm QNI separated on 25th May
Two brief (but important) observations made possible with a chart published on RenewEconomy with respect to the Hornsdale Power Reserve.
There were 3 events on Tue 25th May – and it seems likely that QNI separated briefly in Event 2
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.
ABC news report suggests Callide C4 will be offline for a long, long time
My evening reading of an ABC news article (about Callide C) released this afternoon suggests a long, long and expensive outage for Callide C4.
Sequence of Events on 25 May – A Very Short & Partial Visual Guide
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…
Here’s 7 of the Headline Questions we’re pondering about, following the dramas in Central Queensland on Tuesday 25th May
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).
Forecast for elevated prices in QLD again this evening – Wed 26th May 2021
Following yesterday’s incidents (plural!) we see prices forecast to be high this evening in QLD as well.
Three Events Yesterday – with Mainland Frequency as low as 48.555Hz
Part 5 in an expanding series, looking at what happened in QLD on Tuesday 25th May 2021 – this one looking at system frequency.