New guest author, Ryan Esplin progressively builds a more precise model of the NEMDE dispatch process to illustrate why the stylised 'Merit Order' bid stack model is increasingly not enough to explain dispatch and...
During early morning Monday 1st May prices spiked in the NSW quite unexpectedly. Guest author Allan O'Neil takes us into the complexities of the EMMS and NEMDE to help us understand the mechanics of...
Tristan Edis from Green Energy Markets takes a deep dive into generator performance across the NEM. He provides his take on which wind and solar farms have outperformed and underperformed, through the recent renewable...
Another short article today presenting an overview of Aggregate Raw Off-Target (AggROT) for Semi-Scheduled units on 16th February 2021 (the largest incidence of collective over-performance at that time).
Another short article today (from GenInsights Quarterly Update for Q3 2022) presenting an overview of Aggregate Raw Off-Target (AggROT) for Semi-Scheduled units on 23rd August 2022.
Another short article today (also from GenInsights Quarterly Update for Q1 2023) presenting an overview of Aggregate Raw Off-Target (AggROT) for Semi-Scheduled units on Friday 20th January 2023.
A short article today (whilst in the midst of finalising GenInsights Quarterly Update for Q1 2023) presenting an overview of Aggregate Raw Off-Target (AggROT) for Semi-Scheduled units on Friday 3rd February 2023.
In the fourth instalment of this ongoing case study, Dan Lee maps the locations and contributions of the semi-scheduled units that contributed to the +861MW Aggregate Raw Off-Target that occurred on the afternoon of...
From 16th March 2023 the infamous 'x5 constraint' has been split into two. We quickly showed previously that the design of the Left Hand Side (LHS) does not vary. In today's article, valued guest...
From 08:00 (NEM time) this morning, the old 'X5 constraint' (i.e. formerly formally known as 'N^^N_NIL_3') has been split into two (i.e. addressing separately risk of tripping of either/both Bendigo to Kerang 220kV line...
In Part 3 of this Case Study, we look at the source of the Dispatch Interval Availability forecasts for these units at 17:05 on 27th October 2022 (i.e. Self-Forecast or something else, incl AWEFS/ASEFS).
In Part 2 of this Case Study, we look at those 15 x Semi-Scheduled units highlighted with large deviations (mostly under-performance) at 17:05 on 27th October 2022 in order to understand more.
Dan Lee explains why capacity factor could be becoming an increasingly less useful measure for comparing how different solar farms are performing and begins an exploration into some of the factors in play when...
In Part 1 of this Case Study, we start to look at the large collective under-performance across all Semi-Scheduled units (i.e. Wind and Large Solar) at 17:05 on 27th October 2022. More to come...
In today's article (a third snippet from GenInsights Quarterly Update for Q4 2022) we take a look at levels of large 'Aggregate Raw Off-Target' (i.e. large collective deviations away from Target), which continue to...
This second excerpt from GenInsights 2022 Q4 Update highlights some of what's seen in terms of the performance of coal units.
This first excerpt from GenInsights Quarterly Update for Q4 2022 looks specifically at the trended level of adoption of self-forecasting for Semi-Scheduled Solar Farms in the NEM. This article on Monday 26th February 2023...
Allan O'Neil digs through historic FCAS enablement and utilisation levels to examine whether there is an increasing trend in recent years.
Allan O'Neil provides an explainer about how small deviations in supply and demand are managed in the NEM, in order to help us understand the apparent swings in frequency that we noted in QLD...
David Leitch of ITK Services provides his top insights from the GSD2022, which he has used to look into generation mix, constraints and firming.