The commencement of Frequency Performance Payments (FPP)
Yesterday (Sunday 8th June 2025) saw the commencement of the new Frequency Performance Payments (a.k.a. FPP) method.
Primary Frequency Response (PFR)
Two diagrams to help illustrate the changes coming with FPP (Frequency Performance Payments)
We've facilitated a number of articles on WattClarity relating to the looming FPP changes (now 10 weeks away). Here's two images I've drawn up to (hopefully) illustrate my understanding of what these changes represent.
Today’s presentation to CEC’s Market & Grid Directorate
We thank the Clean Energy Council for the opportunity to share insights into revenue trends, cost trends, and analysis of upcoming changes for units operating in the NEM.
An initial look at Winners and Losers from Frequency Performance Payments (FPP)
In his first article, Jack Fox reports some initial observations from a review of the Non Financial Operations (NFO) data that's been published since Dec 2024.
Comparing Frequency Measures (Frequency, FI, FM)
The faster-moving nature of the FM, with the introduction of FPP, removes predictability in the indicator for frequency performance.
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.
Last Friday’s large and (mysterious) apparent drop in NSW ‘Market Demand’ (part 3) … what helped restrain frequency?
Friday 31st January 2025 (appeared to) experienced a very large drop in demand in NSW in a single dispatch interval - but we're now suspecting some form of data/operational glitch. However we wonder, if...
Frequency Performance Payments project commences non-financial operation, 9th December 2024
AEMO's Frequency Performance Payments (FPP) project has commenced in production today under "non-financial operation" (NFO).
NEM Mainland frequency patterns – historical overview from 2024
In this overview, we take a longitudinal look back at how frequency has changed over the years.
Has adding wind and solar upped the need for FCAS in the NEM?
Allan O'Neil digs through historic FCAS enablement and utilisation levels to examine whether there is an increasing trend in recent years.
Investigating last Friday’s frequent frequency swings
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...
AEMC published final determination for ‘Primary frequency response incentive arrangements’
Some brief notes about the publication by the AEMC (on Thu 8th Sept 2022) of the Final Determination with respect to PFR Incentive Arrangements.
AEMC proposes PFR to remain mandatory–and big changes to causer-pays
The AEMC recently published a draft determination on Primary Frequency Response - proposing it remain mandatory, and to introduce big changes to the causer-pays process, including payments for good performance.
What happened at each of the DUIDs impacted by the ‘Q>>NIL_CLWU_RGLC’ constraint equation on Sunday 24th January 2021 (Part 5)
It's now seven months since the SCADA outage on Sunday 24th January 2021 - and we're finally able to complete and publish this (quite long) article exploring some of the implications for units on...
Plenty of things went wrong in Queensland last Tuesday, but some very important things went right
Whilst there were many things that went wrong on Tuesday 25th May 2021 (last week), guest author Allan O'Neil highlights that there were at least 4 things that went right - contributing to a...
Hornsdale Frequency data seems to confirm QNI separated on 25th May
Two brief (but important) observations made possible with a chart published on RenewEconomy with respect to the Hornsdale Power Reserve.
Moving from mandatory PFR to an arrangement that’s more durable
A quick synopsis of some market reforms at the AEMC relating to system frequency.
Observations of differences in system frequency in the Mainland NEM (comparing 2019 to 2021)
One of the many data sets being crunched as part of our analytical efforts underpinning the development of 'GenInsights21' is system frequency. In this short article today, we share some initial observations on how...
What’s “Primary Frequency Response” and why does it matter anyway?
Paul McArdle recently drew my attention to a short Twitter thread started by David Osmond on the arcane topic of NEM system frequency behaviour: At Paul’s invitation I’ve dived further into this issue...