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.
A couple days after the end of ‘winter 2024’ the temperature has dropped by 10 degrees in Archerfield. We take a look at how temperatures in Archerfield through winter 2024 compare with the 18 preceding years to see how remarkable was the ramp in temperatures at the end of August 2024.
Some quick notes on what’s happened in the NEM today (17th) and yesterday (16th)
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