Collections of events that we see happening in the NEM, categorised in terms of the seasons in which they occur.
Over the week that has just passed we kept noticing production from wind farms across the NEM was fairly muted – so we’ve had a look at what it meant, in aggregate daily capacity factors. This is something we’re exploring much deeper in Generator Insights 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.
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.
Looking back at Tuesday 13th April 2021 – a day in which the ex-tropical cyclone Seroja in Western Australia caused some wobbles in rooftop solar PV output in South Australia.
David Osmond’s question on Twitter prompted me to have a look at large wind production overnight.
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.
A short article this afternoon to link through to the Preliminary Report published by the AEMO, looking into what happened in South Australia last Friday (12th March 2021).
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…
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.
A different type of market notice today (speaking of potential curtailment of embedded generation in South Australia) points to the future … accelerated by Heywood repairs in this instance.
A shorter article – thinking more about the future, prompted by one of the factors that contributed to the price volatility seen in South Australia on Friday 12th March 2021
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)…
The price has spiked in South Australia this evening (Fri 12th March 2021). Here’s Part 1…
AEMO Market Notice 83206 today notifies the broader market of the rectification work on the Heywood transmission (damaged 13 months ago) to be conducted from Friday morning this week.
Two initial thoughts, following EnergyAustralia’s announcement that they will close Yallourn Power Station four years earlier than initially planned (mid-2028).
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.
Today (Sunday 14th February 2021) ‘Scheduled Demand’ dropped down again in South Australia – almost setting a new record for ‘lowest point since the start of the NEM (excl System Black)’