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?
All Posts
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.
Watt’s Within a Dispatch Interval? A *very* simplistic view, for a start…
A second step in the 'Energy Literacy' journey in helping readers to understand the complexities within each and every Dispatch Interval.
Three of the common building blocks within the National Electricity Market
This article is a first step into exploring some of the complexities within three of the commonly used time-steps across the NEM.
‘Market Demand’ drops 401MW in 5 minutes on Sunday 2nd March 2025
All I have time to do now is note another change greater than 400MW in a 5-minute period – this time in in Victoria to the 11:10 dispatch interval (NEM time) on Sunday 2nd...
AER wrote letters to Semi-Scheduled participants (and others) with respect to ‘Expectations surrounding the use of self-forecasting’
At the end of February 2025, the AER wrote to Semi-Scheduled generators, and other interested parties, warning of the AER’s concerns about self-forecasting practices.
Only 14 weeks to go until Frequency Performance Payments
Full financial operation commences 8 June 2025.
Incentivising primary frequency response
The implementation of the Primary frequency response incentive arrangements rule is driving change in how system frequency is controlled and paid-for. The changes stem from how the NEM will incentivise primary frequency response. 6...
About System Frequency
The NEM operates at a frequency of 50 hertz (Hz) which means the alternating current should cycle 50 times a second between positive and negative voltage.
Guest Authored Posts
Modelling prices in a post-coal NEM: When batteries dominate the market
Paul Bandarian and David Leitch from ITK Services share modelling results for a post-coal NEM, arguing today’s electricity prices can be maintained if batteries become the dominant price-forming technology and solar is structurally supported.
Runway cost allocation – ready for liftoff?
Allan O'Neil unpacks a proposal under consideration by the AEMC to apply “runway” cost allocation to contingency FCAS, explaining how this could materially change who pays for frequency security in the NEM.
Detailed Analysis
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