AEMO notes possible early-morning direction in NSW on Thursday 25th September 2025
Worth calling out MN129729 published on Wednesday 24th September 2025 at 14:29 about possible early-morning intervention in NSW for System Strength reasons
Eventful days in 2025
A catalogue of articles pertaining to eventful days in 2025
ER03 now (again) slated to come offline early Thursday morning 25th September 2025
Following from the quick look at the unplanned outage for MP2 (now underway) there's some difference in the picture for the unplanned outage for ER03.
Yes, MP2 did come offline in the early hours of Wednesday morning 24th September 2025
A short note looking at the commencement of the unplanned outage for MP2 on Wednesday morning 24th September 2025
AEMO oscillates warnings – possible need to intervene in NSW on Thu 25th Sept 2025 for System Strength reasons
At 15:30 today (Tuesday 23rd September 2025) the AEMO flagged in MN129259 a possible need to intervene in NSW this Thursday 25th September 2025 due to forecast low System Strength.
Belatedly noting 16 winners announced (on Tuesday 16th September 2025) in Capacity Investment Scheme auctions
Coincident with last week's CEC's QCES in Brisbane, the Federal Government announced 16 winners for 'Tender 3' of the Capacity Investment Scheme.
Prices for Lower Regulation FCAS elevated across the mainland Sunday afternoon 21st September 2025
A short article looking at some elevated prices for Regulation Lower FCAS on Sunday afternoon 21st September 2025
A brief recap of a large afternoon frequency wobble on the NEM mainland on Saturday 20th September 2025
We noticed yesterday (Saturday 20th September 2025) a large afternoon dip in frequency down towards (but not outside) the limits of the NOFB - and briefly explore here.
Update to Constraint Violation Penalty (CVP) Factors – effective 19th September 2025
Referencing AEMO's MN129117 published Tuesday 16th September 2025 with respect to this Friday 19th September 2025.
Frequency drop on Thursday evening 11th Sept 2025 with Tallawarra B trip
A quick article to explore a frequency drop on Thursday evening 11th September 2025.
Will I see you at the inaugural ‘NEMdev’ conference in Brisbane on Tue 7th and Wed 8th October 2025?
Worth a short note to point readers here to the current details about the conference – which is to be held in Brisbane on Tuesday 7th and Wednesday 8th October 2025.
3.5 months after the turbine fire at Bulgana Wind Farm, we take an updated look
Combining together a bundle of different metrics related to the 'availability' of a wind farm, we take a look at what's happened at Bulgana Wind Farm over the past ~25 months.
The new ‘V_NWVIC_GFT1_750’ constraint equation binds, on Wednesday evening 10th September 2025
A short article to look at the first instance of the new ‘V_NWVIC_GFT1_750’ constraint equation binding - on Wednesday evening 10th September 2025 (not 36 hours after it had first been introduced).
Newport Power Station running, with Yallourn’s yips yielding 1 unit operations
We noticed Bruce Mountain’s comments on LinkedIn about Newport power station running overnight, so had a look in ez2view.
Noting the NERC Alert ‘Large Load Interconnection, Study, Commissioning, and Operations’
A quick note to call attention to this recent alert from NERC with respect to ‘Large Load Interconnection, Study, Commissioning, and Operations’
Wobbles at Yallourn unit 4
A brief look at recent operational challenges at Yallourn unit 4.
Outage at Vales Point unit 5 extended – return to service now not expected until 15th December 2025
Subsequent to earlier article about VP5, the expected duration of the outage pushed out by more than a month.
AEMO notes ‘New Victorian system normal constraint to manage contingency size on north-west Victoria’
The AEMO notifies that the new 'V_NWVIC_GFT1_750' constraint equation will first be invoked from 10L00 on Tuesday 9th September 2025.
Vales Point unit 5 (partly unplanned) outage – return to service currently expected 9th November 2025
On Tuesday 26th August 2025 the VP5 unit came offline, with rebid reasons suggesting that ‘turbine vibrations’ were a factor. We take a look ~10 days later.
AEMC releases July 2024 working paper ‘Addressing the risk of algorithmic collusion’
Today we were alerted that the AEMC had belatedly published this 15-page Staff Working Paper titled ‘Addressing the risk of algorithmic collusion’.
AEMO initiates new operational requirements in SA (1 synchronous unit, in certain circumstances) and NSW (system strength)
Worth a short note today (Wednesday 3rd September 2025) to record AEMO’s Market Notice 128912 published at 16:10