In this guest article, Matt Grover from Fluence draws on operational data and real-world trading experience to unpack how Australia’s grid-scale batteries performed across three June 2025 peak days — and what capabilities belong...
Having already noted the ‘Weakness in frequency stability on Thursday afternoon 16th October 2025’, we take a look at the causes - for the four high-profile dispatch intervals.
In this article we inspect power deviations from dispatched units that would have contributed to the frequency rise, and the deviations that would have contributed to the correction.
The worst periods of frequency stability on Thursday 16th October 2025 were *not* with the simultaneous trip of YWPS3 and YWPS4, but rather later and the day - and look similar to patterns seen...
A quick follow-on early Friday morning 17th October 2025 to note that both YWPS3 and YWPS4 made it back online overnight.
Following the simultaneous trips (on Thu 16th Oct 2025) of YWPS3 and YWPS4, we take a look at current return to service expectations.
System frequency remained within the NOFB, appears well managed given the supply loss approached 600 MW.
Following the simultaneous trip of units at Yallourn, directions to Jeeralang Power Station were issued for maintaining System Strength in Victoria.
A short note on Thursday 16th October 2025 to record both Yallourn Units 3 &4 tripping during the 13:35 dispatch interval (NEM time) today.
Amongst the many emails that hit my inbox recently was an email from the AEMC that spoke to the ‘Package of ISP reform underway’ – and specifically these two arms.
In this guest article, Matt Grover from Fluence draws on operational data and real-world trading experience to unpack how Australia’s grid-scale batteries performed across three June 2025 peak days — and what capabilities belong...
With the Queensland state government’s new energy roadmap due out tomorrow, Greg Elkins highlights how distorted signals and state interventions expose a new NEM failure.
In the final part of our four-part CIS series, we zoom out to examine what government-backed Contract-for-Difference schemes are really achieving — drawing on policy lessons from the Nelson Review.
Some of our readers will be interested to note that the Factual Report into the ‘Grid Incident in Spain and Portugal on 28 April 2025’ was released on 3rd October 2025.
In part three in this series about the CIS, we look at how a curtailment provision — briefly included in drafts for Tender 1 but later removed — may raise questions about how revenue...
In part two of this four part series about the success of the CIS so far, we explore why delivery challenges may have emerged.
Recent debate has centred on the CIS’s success so far. In part one of this four-part series, we look at how projects have progressed since being awarded a contract.
Prompted by a presentation from CleanCo’s Rimu Nelson at the Queensland Energy Summit, Dan examines how operational and bidding patterns at Wivenhoe and Swanbank E have evolved since CleanCo assumed control in 2019.
In this article, we tie together various events since 1st January 2024 that featured either System Frequency outside the NOFB and large AggROT for Semi-Scheduled assets.
Earlier today we trended the incidence of large Aggregate Raw Off-Target across all Semi-Scheduled units. In this updated tabulated list, we list each of the largest instances from January 2024 to June 2025.