Aggregate Dispatch Error by Fuel Type for Tuesday 15th September 2026
Yesterday (Tue 15th Sept 2026) we noticed Significant oscillations in ‘Market Demand’ in VIC, and also saw notable frequency fluctuations. We look at Dispatch Error.
dispatch error
Suspected (data?) glitch(es) at Wellington North Solar Farm, on Saturday 23rd May 2026 and beforehand
Yesterday one of our team members noted something strange at Wellington North Solar Farm ... here we take a quick look at the last few days and see a few things.
Another case of Semi-Scheduled VRE over-production (this time at 14:20 on Saturday 11th April 2026)
We've already written about the collective over-performance of Semi-Scheduled VRE on Friday 10th April at 10:30 driving frequency high. There was also an incident at 14:20 on Saturday 11th April 2026 worth investigating ...
Yes, it was a large over-performance from Wind Farms (many of them) that drove frequency above the NOFB on Friday 10th April 2026
With the advantage of 'next day public' data we look at 'Dispatch Error' at 10:30 and 10:35 on Friday 10th April 2026 to see what drove the frequency spike outside of the NOFB.
What happened at Macarthur Wind Farm (14 hours with a consistent Dispatch Error of approx 60MW)? … i.e. Part 6
A quick initial look at what looks to be a 14-hour run of Dispatch Error at Macarthur Wind Farm (perhaps due to some gremlin in AWEFS?)
A quick look at Dispatch Error for each individual Wind Unit (at 03:05 on Thursday 2nd April 2026)
In Part 5, we’ll look at Dispatch Error for all Wind Farm Units (i.e. the Semi-Scheduled ones only) at 03:05 on Thursday 2nd April 2026, following the trip of Kogan Creek.
A quick look at Dispatch Error for each individual Coal Unit (at 03:05 on Thursday 2nd April 2026)
Peeling another layer on responses to this morning's trip of Kogan Creek, and the responses of other coal units, which appear to have been mostly helpful.
What helped (and what didn’t help) to contain the frequency drop with this morning’s Kogan trip?
We take a first look at Aggregate Dispatch Error (by Fuel Type, NEM-wide) in relation to the Frequency Drop following trip of Kogan Creek early Thursday morning 2nd April 2026.
A quick initial look at operations at the Wambo Wind Farm (WAMBOWF1)
Several recent conversations with different people prompted a look at the (under commissioning) Wambo Wind Farm via the GSD2025 and our Software. We share some of this here.
To what extent did high-temperature de-rating contribute to large under-performance across Semi-Scheduled Wind fleet on Tuesday 27th January 2026?
This is the 2nd of two articles today … this one specifically focused on Wind (i.e. the Semi-Scheduled units) and the aggregate Dispatch Error across all 288 dispatch intervals on Tuesday 27th January 2026.
Delving deeper, into periods of under-performance across Semi-Scheduled Solar Farms on Tuesday 27th January 2026
This is the 1st of two articles today … this one specifically focused on Large Solar (i.e. the Semi-Scheduled units) and the aggregate Dispatch Error across all 288 dispatch intervals on Tuesday 27th January 2026.
Three time-ranges of interest, with respect to aggregate ‘Dispatch Error’ by Fuel Type on Tuesday 27th January 2026
Given I’d just publish this daily ‘Dispatch Error’ chart for yesterday (with the glitch), I thought it would be useful to wind the clock back to Tuesday 27th January 2026 (another day of keen interest) to produce the same.
A quick initial look at Dispatch Error by Fuel Type, and System Frequency, with the AEMO operations glitch on Tuesday 10th March 2026
A second article looking at some outcomes of the operational glitch on Tuesday 10th March 2026.
Under-performance of Wind Farms increased during the recent heatwave
A conversation today amongst our broader cohort about the heatwave earlier this month had me scurrying to the ‘Trends Engine’ in ez2view to produce the following macro view of ‘Dispatch Error’ across the entire* Wind Farm fleet NEM-wide.
How collective under-performance of Semi-Scheduled Solar Farms weakened frequency on Sunday afternoon 30th November 2025
We’ve already posted about how ‘Mainland Frequency dragged downwards around sunset, on Sunday 30th November 2025’. Here, we see how underperformance across Large Solar Farms was a major cause.
A quick look at ‘Dispatch Error’ on Thursday 6th November 2025, in conjunction with the Frequency Spike
Today, we have the advantage of ‘next day public’ data, so are able to peel some more layers of the onion (in this article 'Dispatch Error') - with respect to the significant Frequency Spike on Thursday 6th November 2025 (which appears due to some gremlins...
Large under-performance across Solar Farms as the main driver of frequency wobbles on Thursday afternoon 30th October 2025?
With respect to the ~17:00 period on Thursday 30th October 2025 (and the frequency drop, possibly outside the NOFB), we take a look at the Dispatch Error of individual Semi-Scheduled units to find patterns.
Selected 4-second data relating to the (SemiSched-induced) frequency weakness on Thursday 16th October 2025 (i.e. Part 4)
In Part 4 of this evolving Case Study, we take a closer look (using 4-second data) at the 12 x offending Semi-Scheduled units that appear to have played a large role in driving frequency south on late Thursday afternoon 16th October 2025, outside of the...
Aldoga Solar Farm on Sunday 12th October 2025 – Part 2
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.
Two bouts of >2 hours of Non-Conformance at Aldoga Solar Farm on Sunday 12th October 2025
A quick initial look at two lengthy periods of Non-Conformance at Aldoga Solar Farm on Sunday 12th October, with the first period seeing large negative Dispatch Error, and a blip in system frequency.