Only 14 weeks to go until Frequency Performance Payments
Full financial operation commences 8 June 2025.
All Posts
Incentivising primary frequency response
The implementation of the Primary frequency response incentive arrangements rule is driving change in how system frequency is controlled and paid-for. The changes stem from how the NEM will incentivise primary frequency response. 6...
About System Frequency
The NEM operates at a frequency of 50 hertz (Hz) which means the alternating current should cycle 50 times a second between positive and negative voltage.
Up, up and away … Market Price Cap to increase by $2,800/MWh (or 16%)
The AEMC has announced that the Market Price Cap will increase to $20,300/MWh from 1st July 2025. Should we be so surprised?
Is VRE forecastable? (Part 1 in what might be a series)
Over many years we've invested deeply in analysing the nuanced answer to the question 'Is VRE Forecastable?'. This article (which has almost been posted many times before) is triggered today by yet one more...
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.
Hot chips, algorithms and electricity markets
Declan Kelly thinks through and discusses competition issues that could arise from the increasing proliferation of auto-bidding software by big batteries in the NEM - and suggests some pre-emptive steps that that could be...
Curtailment at New England Solar Farm – Sat 22nd and Sun 23rd February 2025
A question from a client led me to take a (very quick) look at curtailment over the recent weekend (Saturday 22nd and Sunday 23rd February 2025) at New England Solar Farm 2 ... with...
Pronounced ramp in ‘Market Demand’, then subsidence, in South Australia on Saturday 22nd February 2025
Recording a ~500MW ramp and subsidence in ‘Market Demand’ in South Australia on Saturday 22nd February 2025 (including a drop of 229MW in 5 minutes).
A closer look at NEM Mainland Frequency (at 100ms cadence) on Thursday afternoon 13th February 2025 (i.e. Part 2)
Some recent questions prompted this more granular look at NEM Mainland Frequency on Thursday afternoon 13th February 2025
Guest Authored Posts
Do we have enough gas to wait until nuclear comes along?
Tristan Edis of Green Energy Markets discusses the practicalities of the gap that must be filled by the gas sector under the nuclear power timeline proposed by the Federal Opposition.
The challenge of imperfect foresight: Storage operation in a highly renewable NEM
Josh Boegheim from Powerlink discusses the limitations of perfect foresight assumptions for system planning—and shares results from a recent study that simulated energy storage dispatch using deterministic and stochastic forecasting approaches.
Detailed Analysis
Who gets to run when everyone bids the same? A crash course in disorderly bidding and tie-breaking
Marcelle explores the little-understood concept in NEM dispatch of the tie-break principle, using the new 'Constraint Dashboard' widget in ez2view.
A briefing on GenInsights21 for Smart Energy Council members
Next Tuesday 5th April 2022 the Smart Energy Council has organised us to provide a briefing on GenInsights21, and what we can learn from this to inform the energy transition.
The Generator Statistical Digest 2021 (GSD2021) is released
We're please to note that the Generator Statistical Digest 2021 (a.k.a. GSD2021) is available to clients from Monday 28th March 2022.
How are South Australia’s non-scheduled wind farms participating in the market now?
AEMO recently imposed additional dispatch obligations on six non-scheduled wind farms in South Australia. We take a look at what this means in practice.
What does the future hold for Wind and Solar in the NEM – seen via GenInsights21?
Following from the release of GenInsights21, in this article we look at some of what that analytical publication can help us understand, in terms of how the changing market is impacting on the role...
How should the AER’s wholesale monitoring responsibilities change, to suit the changing market environment?
On Tuesday 21st December 2021 the AER requested the AEMC to consider changing the prescriptive requirements in the Rules for the AER to analyse particular types of market outcomes in particular ways, and instead...
GenInsights21 released, on Wednesday 15th December 2021
It's Wednesday 15th December 2021 and we have released GenInsights21 (a deep dive exploration, asking what history can tell us of the challenges and requirements of the accelerating energy transition).
Initial look at the latency of all rebids
Following from some analytical work performed in testing for Five Minute Settlement, here's a view of latency of rebids (all DUIDs, all commodities) in recent months that prompts a number of questions...