Adoption and use of dispatch self-forecasting for wind units, Q1 2025
We summarise how wind units are using self-forecasting to-date. The analysis leads us to consider where upcoming market change may lead the industry.
Semi-Scheduled Generation
The growing NEM BESS fleet: Who is controlling all this capacity, anyway?
Matt Grover from Fluence shares insights into the NEM's growing big battery fleet and what it means for the market and their operators. This article follows on from his keynote at the ESS two...
What’s happened to those Semi-Scheduled units registered to provide FCAS?
Following a question from a client today, we take a quick look at (some of) what the GSD2024 reveals of FCAS market participation of Semi-Scheduled units.
AER published ‘Semi-Scheduled Generator Compliance Bulletin’ on Tuesday 4th February 2025
Two weeks after the AER published its updated Compliance Bulletin (and Compliance Checklist) for Semi-Scheduled units, we've finally found time to note about it.
Where are those Semi-Scheduled Wind Farms in Victoria that were reviewed w.r.t. Monday 16th December 2024
To assist readers in our ongoing review of possible high-temperature (or other) effects on Wind Farm output in Victoria on Monday 16th December 2024, here’s a map we’ve put together to help indicate the...
AEMO’s 2024 Intermittent Generator Forum provides renewed awareness for wind and solar generators
Information spanned a wide range of topics related to intermittent generator forecasting, and included a guest presentation by the AER.
BESS market operations: We need to talk about being scheduled
James Tetlow of Overwatch Energy shares this article which is adapted from his presentation about BESS operations in the NEM at the recent All-Energy conference in Melbourne.
Drop in System Frequency on Saturday 5th October 2024 – Part 2
To further understand the frequency drop we delve into the 4-second data (used for regulation FCAS contribution calculations) in this Part 2, looking at generating units (including BDUs).
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)...
AEMO commences publishing actual intermittent generators (SCADA) availability data to the EMMS Data Model
The AEMO began publishing actual intermittent generators (SCADA) availability data: (a) to the EMMS Data Model in the Production environment from August 13th 2024 and (b) to NEMWeb from August 14th 2024.
Elevated prices in SA on 4th June 2024
A brief run of high energy prices in SA on 4th June 2024 was observed in the evening. Energy prices as projected in the predispatch runs from earlier in the day had threatened to...
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...
Regulation FCAS Costs in 2023
Following a presentation with the CEC, Linton shared some insights into FCAS Regulation costs for wind and solar units over last calendar year.
Keeping up with the curtailment Part 2: The what and the where
Dan Lee takes a deeper dive into network and economic curtailment, and shares some charts and data maps that demonstrate seasonal effects, and the geographic spread of units affected.
How many Semi-Scheduled units have taken advantage of the market change that went live on 7th Aug 2023?
Our GSD2023 was released just over 4 weeks ago. Finally today I have a chance to utilise the GSD2023 Data Extract to take a look across all the Semi-Scheduled units (i.e. Wind and Solar)...
A long-range trend of large instances of Aggregate Raw Off-Target (AggROT) across all Semi-Scheduled units
The second article today (falling out of analysis for GenInsights Quarterly Update for 2023 Q4) presenting a long-term trend of the incidence of large instances of Aggregate Raw Off-Target across the growing number of...
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.