Back in July 2025 we saw the AEMO had released this ‘Technical Review of the NEM Frequency Control Landscape’ … but are only noting this here now.
How common is it that mainland frequency deviates outside the NOFB (normal operating frequency band)?
It appears it was unit availability used to set the target for dispatch that went awry, rather than unit output.
Worth noting, as I've just become aware, that submissions close tomorrow on AEMO's consultation on Primary Frequency Response (PFR) Test Guidelines for Semi-Scheduled Plant
Categories with a longer bar left of zero are losing more of their spot energy market revenue to regulation and PFR costs.
An initial review of payment and cost outcomes of the first 44 days of financial operation of the FPP arrangements.
System frequency shows improved resilience to sudden coal generation events since 2020.
Yesterday (Sunday 8th June 2025) saw the commencement of the new Frequency Performance Payments (a.k.a. FPP) method.
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.
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.
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.
The faster-moving nature of the FM, with the introduction of FPP, removes predictability in the indicator for frequency performance.
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...
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.
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...
AEMO's Frequency Performance Payments (FPP) project has commenced in production today under "non-financial operation" (NFO).
In this overview, we take a longitudinal look back at how frequency has changed over the years.
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...
Some brief notes about the publication by the AEMC (on Thu 8th Sept 2022) of the Final Determination with respect to PFR Incentive Arrangements.