Burst of volatility in NSW and QLD (and Actual LOR1) on Thursday 13th March 2025
A short note with a snapshot from NEMwatch at 17:40 (NEM time) on Thursday 13th March 2025 to mark some volatility.
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An initial look at Winners and Losers from Frequency Performance Payments (FPP)
In his first article, Jack Fox reports some initial observations from a review of the Non Financial Operations (NFO) data that's been published since Dec 2024.
Three headline observations, about the use of proxies for System Frequency in Frequency Control mechanisms
Various authors have shared articles about frequency, frequency control and Regulation FCAS in recent times (including 6 from Linton). Here's three things that jumped out to me in...
‘Market Demand’ in TAS drops by 151MW on Wednesday 12th March 2025
A quick article to record this large drop in 'Market Demand' in TAS, notified to us by the ‘Notifications’ widget in ez2view at 12:00 (NEM time) on Wednesday...
AWEFS and ASEFS dispatch availability forecast outage on 11 March, 2025
AWEFS and ASEFS dispatch availability forecast systems experienced what looks to be an outage and we uncover how the 'SCADA' origin filled the gap.
Gremlins in AEMO systems publish rogue APC alert for South Australia, Sunday 9th March 2025
Which much attention focused on Queensland (in the wash out that has been TC Albert) a rogue Administered Pricing Notice (MN125439) for South Australia was a head scratcher,...
ex-TC Alfred makes landfall overnight, many more unplanned network outages result
It’s Sunday morning 9th March 2025 and a reference to the Energex Outage Map shows many more orange splotches denoting unplanned outages (by virtue of ex-TC Alfred).
What other details are visible, of those network trips in northern NSW yesterday (Fri 7th March 2025)?
Taking another look (on Saturday afternoon 8th March 2025) at what we can see of those network elements in northern NSW that tripped on Friday morning 7th March...
Power Outages in Northern NSW and South-East Queensland at Saturday morning 8th March 2025
A Saturday morning update (8th March 2025) following the overnight advance of TC Alfred.
Yass to Wagga control scheme update removes some constraints
The notice informs us that an update to the Yass overload trip scheme means it is now managing flows on lines 990, 991 and 970 132kV in both...
Friday morning update from WeatherWatch, and TC Alfred
Because not all have access to Anthony Cornelius' updates on LinkedIn, but many are interested in TC Alfred, I have shared Anthony's update from Friday morning 7th March...
More network trips in northern NSW, on Friday 7th March 2025 (is TC Alfred involved?)
The AEMO notes that, at 06:12 (NEM time) on Friday 7th March 2025 various 132kV lines between Lismore and Mullumbimby tripped, along with No 1 and 2 cables...
High level uncertainty about daytime QLD (and to a lesser extent NSW) ‘Market Demand’ with TC Alfred
AEMO is seeing considerable uncertainty in forecasting daytime 'Market Demand' for QLD (and NSW, to lesser extent) in the near term due to uncertainties in the approach of...
Overview of Regulation FCAS costs in 2024
This article reviews regulation FCAS costs in 2024, relative to maximum capacity, and uncovers drivers behind high non-scheduled unit costs.
Regulation prices and enablement – a historical review
The introduction of frequency performance payments in 2025 changes how costs of regulating frequency are quantified and allocated. This article inspects historical trends in regulation FCAS enablement levels...
(A first step into the complexities of) the Dispatch Interval in the Real World
A third step in the 'Energy Literacy' journey in helping readers to understand the complexities within each and every Dispatch Interval.
Afternoon trip of Bayswater unit 3 delivers rapid drop in Mainland Frequency
A quick record of a unit trip at Bayswater Power Station on Wednesday afternoon 5th March 2025.
Unplanned outage of No 1 leg of Directlink (was this related to the emergence of TC Alfred?)
AEMO says 'At 1030 hrs the Ewingsdale-Mullumbimby 9G5 132kV line and the Directlink DC1 tripped'. Was this related to TC Albert?
Comparing Frequency Measures (Frequency, FI, FM)
The faster-moving nature of the FM, with the introduction of FPP, removes predictability in the indicator for frequency performance.
The curious case of the ‘Q^^TR_CLHA_-600’ constraint equation on Monday 3rd March 2025 (Part 1)
A first walk through the ‘Q^^TR_CLHA_-600’ constraint equation (at the 10:00 dispatch interval on Monday 3rd March 2025), before 'next day public' data is available.