AEMO directs load shedding (following unplanned network outages) in NSW on Monday evening 8th July 2024
A short (perhaps initial) record of load shedding instructed for NSW on Monday evening 8th July 2024.
transmission outage
Victoria’s Department of Energy reports *six* transmission towers down in Victoria
The Department of Energy* in Victoria confirms that six towers have been downed, on Tuesday 13th February 2024
Rumours of transmission towers on the ground in Victoria (Tue 13th Feb 2024) … but *not* yet confirmed?!
At 15:06 AEMO reported *rumours* of transmission towers on the ground in Victoria. Constraint Set data at 15:45 suggests these rumours are not (yet?) confirmed.
Brief period of ‘Actual LOR2’ in the SA region Friday evening 27th October 2023 with low wind and constrained imports
A quick review of a short period of ‘Actual LOR2’ in the South Australian region on Friday evening 27th October 2023.
Brief loss of load around Townsville in the early hours of Saturday morning 21st October 2023
A quick initial article on Saturday morning 21st Oct 2023 about a significant loss of load in the Townsville area early this morning following a trip of some transmission elements.
The 2023 ESOO report clarifies why the transmission model only includes ‘System Normal’ – and why it’s a simplification
One observation about the 2023 ESOO is that AEMO is has highlighted the set of constraints modelled is only ‘System Normal’.
ElectraNet tweets about tower damage near Tailem Bend (out for a week)
Second article in a growing series about the islanding of South Australia from Saturday 12th November 2022.
AEMO releases preliminary report into Tasmanian event on Friday 14th October 2022 (i.e. Article 5 in our series)
On Friday 28th October, the AEMO released its preliminary report into the storm damage to Liapootah – Palmerston 220 kV lines (loss of more than 500MW of load, and trip of Basslink and multiple generators)
Several different timeframes for investigating the major Tasmanian system event beginning Friday 14th October 2022
Third article on what happened on Friday 14th October 2022 – sharing a photograph of the damaged transmission (thanks to TasNetworks for the photo, and Zeus for the weather) and outlining a number of different timescales that could be considered with respect to this event.
Sequence of events in Tasmania on Friday 14th October 2022 (initial look)
On Friday 14th October we saw a significant system event in Tasmania – with storms downing power links, leading to large (530MW) loss of load and trip of Basslink. In this article we take a first look at the sequence of events…
AEMO publishes Market Notice 83206 – status update on repair to damaged Heywood transmission line
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.
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.
Case Study Part 5 – Why did those constraint bind – in QLD on Tuesday 13th October 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)
Case Study Part 3 – digging still deeper, about what happened in QLD on Tuesday 13th October 2020
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.
Spot prices plunge in QLD, and may well remain underwater for the coming week
Three main factors contributed to the spot prices in Queensland dropping underwater today for a number of hours – with some factors suggesting this might be the pattern for the coming week…
Don’t Forget About FCAS!
Guest author, Allan O’Neil, takes a look at what’s happened in the (islanded) market for FCAS services in South Australia over the past two weeks with Heywood out of service. He notes:
“generators in SA as a group would have paid out roughly twice in contingency raise FCAS costs what they earned from selling energy”
13 headline questions and observations following the long-term islanding, starting Friday 31st January 2020
In order to help us (internally) map out all the different threads to explore in terms of what happened on Friday 31st January 2020 on a remarkable day in the NEM, I’ve identified a few of the key threads here over the weekend. More articles to follow as time permits….
White knuckle ride across the NEM on Friday 31st January 2020 (extreme NEM-wide demand)
Today (Fri 31 January 2020) saw NEM-wide demand reach levels never seen before (excepting 29th January 2009). This was just the start of the white knuckle ride.
[UPDATED] AEMO Market Notice on “High Impact Outage” for tomorrow – and possible effect in South Australia
AEMO issues a Market Notice for a “High Impact Outage” – a term not used since 2012.
Brown coal production drops because of bushfires
Brown coal production drops as one outcome of the current bushfires around the Latrobe Valley