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.
A quick record of some morning volatility in QLD and NSW … both due to tight supply/demand balance with interconnectors constrained.
A short note about the first of a number of dispatch interval price spikes in the QLD region on Wednesday evening, 21st July 2021.
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).
Some brief notes about a morning price spike today in NSW (Wednesday 14th July 2021).
A snapshot of the start of price volatility in QLD and NSW on Monday 12th 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).
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…
A short article noting volatility rolls into Thursday evening, 10th June 2021
Only two dispatch intervals (thus far?) of extreme pricing tonight for QLD and NSW (Wed 2nd June 2021). Here’s the first one…
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).
Following yesterday’s incidents (plural!) we see prices forecast to be high this evening in QLD as well.
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…
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.
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.
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.
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).
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.
Over 2,000 MW – or around 55% – of South Australia’s firm supply capacity was unavailable last Friday evening (March 12, 2021), along with virtually all of its large-scale renewable supply (a further 1,800 MW or so) but the lights…