Another islanding event separated the SA region from the rest of the NEM yesterday (Monday, 2nd of March). Allan O’Neil investigates what happened before the event and possible causes.
As time has permitted, I’ve invested some time to prepare this first stage of a review of what went on during the period from 31st Jan 2020 to 17th Feb 2020 – a period during which the South Australian region formed its own frequency island following the transmission line damage. A period we’ve called an ‘accelerated accidental experiment’.
South Australia was electrically islanded from the eastern part of the NEM for a number of hours overnight. Here’s a quick (early morning) look at some of what happened.
High temperatures passing through NSW provided the opportunity for the Colongra gas-fired power station to shake off the cobwebs and have a run for the day.
Some high temperatures in Victoria and South Australia drive demand higher and, because of transmission constraints, the IRPM in the Economic Island lower.
A quick note about the tight supply/demand balance in NSW today – by virtue for high demand and constrained interconnector capability.
Some pictorial records of a day when a new record demand was set in Queensland.
A snapshot of a higher demand day in NSW, driven by higher temperatures as they move eastwards
For only the 5th time in 11 years of NEM history (and the 3rd time for South Australia) four consecutive days of price spikes have forced the Cumulative Price to the Threshold, and AEMO has imposed price caps to prevent retailers from going bust.
Some quick notes about high demand and prices in South Australia again today….
Some quick notes about another price spike today in the South Australian region of Australia’s National Electricity Market
Tuesday 3rd November, and the temperatures that had driven prices higher in SA the previous day moved eastwards.
Whilst VIC demand was lower as everyone lost their shirts on a horse, demand climbed in NSW and QLD, dragging prices upwards as well.
A quick review of some activity in the market on Monday 2nd November 2009 (and in particular a price spike in South Australia).
Some preliminary analysis of what happened on Thursday 11th June 2009 – when the NEM experienced its highest NEM-wide demand this winter.
We noted yesterday (Wednesday 10th June) that NEM-wide demand climbed past 32,000MW for the first time this winter.
The following evening saw demand climb to similar levels (a peak of 32,054MW at 18:20 – so 35MW higher than the previous night). However the situation on Thursday night was different in two key ways…
An illuminating view of the NEM during the high NSW prices on 31st October 2008, illustrated with screenshots and a dynamic video from the new NEM-Watch v8.
Our Managing Director spoke at the “Australian Energy & Utility Summit 08” in
Sydney on Tuesday 22nd July 2008, touching on a number of issues including the depressed prices experienced in winter 2008.
With demand soaring, and interconnectors constrained, generators in South Australia and Victoria took what opportunity they had to force the price high. So successful were the South Australian generators that the Cumulative Price Threshold was reached in South Australia and, under NEM Rules, an Administered Price Cap was applied for a period of time.
Our Managing Director was asked to speak at the “Queensland Energy” conference in Brisbane on Wednesday 12th March – specifically addressing the topic of price volatility in the NEM.
To provide the basis of discussion during the conference, we focused our analysis solely on Queensland region (to make the topic more manageable).
In our review of volatility in the Queensland region, we focused specifically on 3 core attributes of the market: Queensland dispatch prices; NEM-Wide Instantaneous Reserve Plant Margin; and the concept of “Economic Islands”.
In Queensland we experienced one of the mildest summers I can remember. As a result of this, demand levels were subdued for most of summer. However, for a couple of days in late February, summer finally arrived, and struck with a vengeance.