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.
Widespread and heavy rainfall occurred across southeast Queensland during the week ending Sunday 27th February, 2022. The deluge produced some of the highest rainfall totals on record and extensive flooding. Did electricity demand drop in association with network outages?
Guest author, Tristan Edis, looks particularly at the Queensland Region of the NEM, and an almost complete stop in the development of new renewables projects.
Hopefully not an omen of what is to come tomorrow night…
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