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).
Three price spikes in the QLD region on Saturday 10th April 2021 help to remind us that how increasingly dependent we are on various machinations of the weather (including, on these occasions, cloud cover and solar output).
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.
Two months ago prices spiked in QLD on a Sunday afternoon when AEMO lost SCADA data feed. One month ago AEMO published a preliminary report. In the background we have been taking a look…
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.
Prompted by an SMS alert this evening, we take a look at the tight supply/demand balance currently forecast for the QLD region on Monday afternoon next week (30th Nov 2020).
In part 5 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 detailed look at the constraint set ‘Q-BCNE_821’ invoked to deal with the transmission outage between H11 Nebo (in ‘North’ zone) and H10 Bouldercombe (in ‘Central-West’ zone)
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.
In part 3 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 dig deeper to explore… including wondering whether it would have been expected in advance.
Based on some preliminary analysis of the Powerlink’s ‘Qdata’ set (available in ez2view) we present our current hypothesis as to the sequence of the events yesterday in the QLD region, where 600MW of solar generation was lost, causing the price to spike to MPC.
Alerted to a price spike at 09:45 this morning in the QLD region, we discovered some reduction in load (spot-exposed Demand Response probably) and also a large collective trip in Solar Farm output (reasons unclear).
A month on from the prior low point seen for Scheduled Demand (and Operational Demand) across Queensland in the middle of the day, the low point mark is driven lower still on Sunday 27th September 2020.
Out of curiosity, and driven by questions received from several people, I’ve invested a bit of time today to delve further into the record low level of Scheduled Demand seen in the Victorian region (and perhaps also across the whole of the NEM) on Saturday 29th August 2020.
Tis the season for records, it seems, with Queensland seeing a very low level of Scheduled Demand during the day today – Sunday 23rd August 2020.
Spurred by a number of concurrent requests I’ve returned to the pattern of prior analysis of Q2 prices (completed in 2016, 2017 and 2018) to look at what’s changed for Q2 2020 that’s just ended. Some stakeholders clearly taken by surprise. Analysis includes the SWIS in Western Australia
Marcelle uses the latest release of ez2view (v22.214.171.1245) to further investigate the impact of low dispatch prices in QLD on Saturday July 4 2020.
Some quick reflections on a day that saw spot prices in QLD down below $0/MWh for most of the period seeing strong daylight hours, hence strong injections from rooftop PV systems.
Analysis compiled to explore what the impact was of the unusual weather pattern (extensive cloud cover and cold temperatures) seen across a large part of Queensland on Saturday 23rd May 2020.
In a sneak preview from the “Maximising Value in the NEM” webinar this Thursday, Marcelle looks at the changing distribution of spot prices in QLD.
It feels like a lifetime ago, already, but I do vaguely remember that we released our Generator Statistical Digest 2019 last week, on Tuesday 28th January 2020. All the tasks…