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.
price spike
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.
Down 55% – but not out
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…
Another QLD dispatch price spike as the sun sets (today on Sun 14th March 2021)
In what’s become a fairly regular occurrence the past couple months, the price spiked in QLD for a single dispatch interval as the sun was setting.
$15,000/MWh in South Australia on Friday 12th March 2021 … part 2 (what seems to have happened)
Prices have (finally!) subsided, so here’s an initial review of what I can see about what happened in South Australia on Friday evening 12th March 2021. Apologies for mistakes (it’s rushed, there will be some)…
Price spikes to $15,000/MWh in South Australia on Friday 12th March 2021 … part 1
The price has spiked in South Australia this evening (Fri 12th March 2021). Here’s Part 1…
High temperatures drive QLD Scheduled Demand to 9,476MW (highest this summer, so far)
Monday 22nd February 2021 saw QLD Scheduled Demand rise higher than it has on any other day so far this summer … 576MW below the all-time maximum.
Sunday 24th Jan 2021 (part 2) – down to the wire (because of bushfire) in South Australia
Second article today, focusing on what happened late in the afternoon and into the evening in South Australia.
Sunday 24th Jan 2021 – a couple discrete incidents
It was forecast it would be a hot day in the southern part of the NEM and it did not disappoint. The hot weather was one of the factors that contributed to price spikes … in Regulation FCAS, and then in QLD and later in South Australia.
Yesterday’s unexpected loss of ~500MW of rooftop PV in South Australia (another type of Contingency event – Credible, or Non-Credible?)
Wednesday 13th January 2021 was a busy day in the NEM, with a couple of different events occurring. In this article we explore a sudden and unexpected drop in output across both rooftop PV and large-scale solar in South Australia that delivered both price spikes, and also broader questions about emerging challenges for the grid (and market).
Price volatility (third day in a row) … and Reserve Trader dispatched in NSW
Third day in a row we see volatility in NSW (and QLD) … and this afternoon AEMO contracts, and then dispatches, Reserve Trader in NSW
More price volatility in (QLD and) NSW on Wednesday 16th December 2020
Second day in a row the price spikes in the NSW region … higher and longer than yesterday. Low aggregate production from Wind and Large Solar across NSW today was clearly one other factor that contributed.
Price spikes in NSW and QLD on the first afternoon of December
Earlier this afternoon we were alerted to a price spike in NSW and QLD that was seemingly caused by a unit trip at one of the larger generators in NSW.
Price spikes in QLD region third day in a row (Tue 17th Nov 2020)
Third day in a row, and at exactly the same time as yesterday (Mon 17th Nov) the dispatch price in QLD spiked through the roof. Here’s a quick first look…
Early blast of summer drives NSW and QLD prices through the roof
It’s not officially summer, yet – but it sure seems like it is across QLD and NSW. High temperatures drive some prices spiking up to the Market Price Cap in both ENERGY and some FCAS commodities as well…
Brief note about NSW price spike on Friday 23rd October 2020
Winding down through Beer O’clock at the end of a long week with the team and the buzzing of my phone distracts to a few successive price spikes this afternoon in the NSW Region: Here’s a snapshot of the 16:00…
Case Study Part 4 – Who did What – in QLD on Tuesday 13th October 2020?
In part 4 of this expanding Case Study of the unexpected price spike on Tuesday 13th Oct, linked to a large & sudden drop in output across 10 solar farms, we take a quick look at what happened at most of the QLD generators through this 10:00 trading period.