(Early!) winter evening volatility returns to QLD and NSW on Wednesday 24th May 2023
A quick article to capture volatility in QLD and NSW on Wednesday evening 24th May 2023.
economic island
How common are islandings and transmission tower failures in the NEM?
In light of recent events, Dan Lee does some digging to find historical incidences of islandings and transmission tower failures.
SA Islanding: Never mind the ‘Big Solar Button’, here’s Flexible Exports
James Martin from SwitchDin, provides an overview of the state of distributed energy management, and how it relates to last week’s events in SA.
A messy separation: a look at the frequency swings in SA during Saturday afternoon’s islanding event
Dan Lee takes a quick look at 5-second frequency data to show SA’s separation from the rest of the NEM and the ensuing frequency swings on late Saturday afternoon.
Administered Pricing begins for FCAS (Lower Reg) in SA at 12:50 on Monday 14th November 2022
An AEMO market notice published just now has alerted that Adminsited Pricing has been declared for FCAS in SA after the Cumulative Price Threshold for the Lower Reg commodity was hit.
Interconnector constraints and limits–an explainer, and a few traps
Limits on interconnectors play a key role in setting regional prices in the NEM. Marcelle finds a number of traps when interpreting the market data.
Evening LOR2 in the QLD region – and early ‘summer’ evening
A quick note about an actual LOR2 condition in the QLD region – Thursday 28th October 2021
NSW morning price spike (14th July 2021) – out of the blue
Some brief notes about a morning price spike today in NSW (Wednesday 14th July 2021).
Price Volatility (now a regular evening event for QLD and NSW) on Tuesday 1st June kicked along by Darling Downs outage.
A number of things happened late today – with the trip of DDPS1 (only declare credible contingency earlier in the day) giving more impetus to spot price volatility in the QLD and NSW regions already facing tight supply/demand following the Callide catastrophe and LOR1 in NSW.
Surviving on the island – again
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.
Reviewing the ‘accelerated accidental experiment’ thrust on SA during the islanding (31st Jan to 17th Feb) – a 1st review
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 islanded from the eastern part of the NEM overnight
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.
Even Colongra gets a run as high temperatures stretch local supplies in NSW
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.
A late burst to summer in the south drives demand higher
Some high temperatures in Victoria and South Australia drive demand higher and, because of transmission constraints, the IRPM in the Economic Island lower.
Only 709MW of spare generation capacity in NSW at 15:40
A quick note about the tight supply/demand balance in NSW today – by virtue for high demand and constrained interconnector capability.
New record electricity demand in Queensland today (Monday 18th)
Some pictorial records of a day when a new record demand was set in Queensland.
Hot weather moves north-eastwards, driving demand in NSW
A snapshot of a higher demand day in NSW, driven by higher temperatures as they move eastwards
South Australia hits the Cumulative Price Threshold
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.
Tight supply-demand balance in SA today!
Some quick notes about high demand and prices in South Australia again today….
Prices spike in South Australia today
Some quick notes about another price spike today in the South Australian region of Australia’s National Electricity Market