Unit deviations from target on Tuesday 19th August 2025
It appears it was unit availability used to set the target for dispatch that went awry, rather than unit output.
Aggregate Dispatch Error
Across 188 Semi-Scheduled DUIDs – Dispatch Error at 16:15 on Monday 26th May 2025
This is my second article today relating to events on Monday 26th May 2025 - with this article looking at Dispatch Error for each of the 188 x Semi-Scheduled units to 16:15.
A trend of aggregate ‘Dispatch Error’ for each Semi-Scheduled fuel type on Monday 26th May 2025
Let’s now return to Monday 26th May 2025 to look at aggregate ‘Dispatch Error’ across both Semi-Scheduled fuel types for all dispatch intervals in the day.
Drop in System Frequency (approx 15:45 NEM time) on Saturday 5th October 2024
Looking back at system frequency, we see a noticeable drop in system frequency around ~15:45 (NEM time) on Saturday 5th October 2024. (a) There's no large trip of a coal unit that coincides (b)...
Case Study of 14:15 on Thursday 22nd February 2024 (large collective under-performance across all Semi-Scheduled units)
In part 2 of a Case Study about Thursday 22nd February 2024 - specifically looking at Aggregate Dispatch Error across all Semi-Scheduled units (and in this part 2 looking just at 14:15).
Aggregate Dispatch Error across all Semi-Scheduled units (NEM-wide) throughout Thursday 22nd February 2024
Finding some time to make some progress in compiling GenInsights Quarterly Updates for 2024 Q1, here's a short Case Study of Thursday 22nd February 2024 (a day that saw significant collective under-performance of Semi-Scheduled...
Tuesday 31st October 2023 sees the only two instances (in Q4, and all year) of AggROT for Semi-Scheduled units < -500MW
Also from GenInsights Quarterly Updates for 2023 Q4, the particular case of Tuesday 31st October 2023 is also worth sharing (and a broad audience understanding).
Large instances of collective under-performance across all Semi-Scheduled units on Sunday 24th December 2023
Returning a focus to GenInsights Quarterly Updates for 2023 Q4, here's a particular example from Sunday 24th December 2023 worth sharing (and a broad audience understanding).
Aggregate Dispatch Error across all Semi-Scheduled units (NEM-wide) throughout Tuesday 13th February 2024
Looking back at Tuesday 13th February 2024 there's consistently large aggregate under-performance (compared to Target) across all Semi-Scheduled units in the NEM through daylight hours. The reason for the increased procurement of Regulation Raise.