With this extracted trend of mainland NEM system frequency (measured at 0.1 second cadence) it appears that there was some large(ish) trip in demand somewhere on the Queensland network, given the spike in frequency at ~07:28 on Tuesday 14th October 2025:
Given that this is a 4-hour trend of frequency that includes some ~75 minutes prior to sunrise in Brisbane, it’s useful to highlight the difference in the ‘pre-sunrise’ pattern in frequency. We are increasingly seeing a marked difference.
Paul was one of the founders of Global-Roam in February 2000. He is currently the CEO of the company and the principal author of WattClarity. Writing for WattClarity has become a natural extension of his work in understanding the electricity market, enabling him to lead the team in developing better software for clients.
Before co-founding the company, Paul worked as a Mechanical Engineer for the Queensland Electricity Commission in the early 1990s. He also gained international experience in Japan, the United States, Canada, the UK, and Argentina as part of his ES Cornwall Memorial Scholarship.
Volatility in Queensland on a sizzling Saturday drives the Cumulative Price more than half-way to the Cumulative Price Threshold (where price caps would be imposed).
A record of the highest NEM-wide demand so far during summer 2012-13. A useful reference, for all of those who entered our “Best Demand Forecaster in the NEM” competition this time, and for those who sat on the sidelines.
A trend of daily stats for Wandoan South BESS since July 2021, and a question about why it (seems to be) so slow to get up and running. Can anyone help?
One of our guest authors, a meteorologist, lends his expertise to helping us understand one of the reasons why peak demand for summer 2014-15 was what it was.
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