A first view of bids under Five Minute Settlement
It was too tempting to take some time today to look back on the first fully 5-minute bids from Friday 1st October (the start of Five Minute Settlement) to see how much has changed.
price spike
The volatility seen through Q2 2021 was also a product of timing of solar production
Only ~11 weeks after the end of Q2 2021 we’re still exploring details of the extreme price outcomes. Here’s some of the ways in which solar PV played a significant role in the price outcomes delivered.
Morning volatility in QLD and NSW on Thursday 22nd July 2021
A quick record of some morning volatility in QLD and NSW … both due to tight supply/demand balance with interconnectors constrained.
Tight supply/demand balance delivers price spike in QLD on Wednesday evening 21st July
A short note about the first of a number of dispatch interval price spikes in the QLD region on Wednesday evening, 21st July 2021.
Friday evening price spike in QLD and NSW – with 300MW demand response in QLD
A short article that might be referred back to later following a spot price spike (in QLD and NSW), and what looks like demand response (in QLD).
NSW morning price spike (14th July 2021) – out of the blue
Some brief notes about a morning price spike today in NSW (Wednesday 14th July 2021).
Spot price up in QLD and NSW, with only 1,532MW of spare capacity Monday evening 12th July
A snapshot of the start of price volatility in QLD and NSW on Monday 12th July 2021.
Mainland region price spikes on Tuesday 6th July 2021
A short note about the start of the evening price spikes on Tuesday 6th July 2021 (these are ongoing, at the time this was posted).
A Second Serving of the Q2 Elephant
For a second portion of Q2 “elephant eating”, I’ll look in some detail at the dynamics of an early instance of spot price volatility in Queensland, because many drivers turn out to be similar across other volatile intervals in the…
Evening volatility continues into Thursday 10th June 2021
A short article noting volatility rolls into Thursday evening, 10th June 2021
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…
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).
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.
Price volatility on Monday 17th May 2021 … as expected (part 1?)
Was speaking with someone this morning about the expectation that there would be price volatility this evening, and the market obliged. It’s only just started, but here’s the second spike (at 17:40) captured in a snapshot from NEMwatch v10: Here’s…
Prices skyrocket across all 4 mainland regions on Wednesday 12th May
Spot prices spiked across mainland regions this evening – firstly at 17:55 (above $1,000/MWh). and then at 18:00 (up towards $15,000/MWh). Here’s a first look.
Rainfall in northern Queensland contributes to price spike at 15:55 on Tuesday 20th April 2021
In between other jobs today, we’ve taken a look at why the price spiked yesterday (Tue 20th April) in QLD … at an earlier time than we had become accustomed to seeing it occur in recent months.
How reversion to static line rating in the ‘Q>>NIL_CLWU_RGLC’ constraint equation contributed the price spike on Sunday 24th January 2021 (Part 4)
More time has elapsed since ‘Part 3’ on 24th March – today I’m posting a shorter piece (Part 4) that explains how RHS of the ‘Q>>NIL_CLWU_RGLC’ constraint equation drove down output and led to the price spike on Sunday 24th January 2021.
A quick review of the price spike in QLD at 14:35 on Friday 9th April 2021
Reminded by today’s spikes, here’s a quick look at a similar price spike that occurred yesterday (14:35 on Friday 9th April 2021 in the QLD region).
Piecing together what happened on Sunday 24th January 2021 with the ‘Q>>NIL_CLWU_RGLC’ constraint equation (Part 3)
It’s taken a while to find the time – but today I’m posting this next analytical piece (Part 3) that seeks to understand what happened on Sunday 24th January 2021 with the NEM-wide SCADA Failure, which contributed to the price spike that occurred in QLD by virtue of what it did to the ‘Q>>NIL_CLWU_RGLC’ constraint equation.