Frequency excursion on Monday 31st March 2025

Posted by Paul McArdleMonday 31st March 2025  6:04 PM   Topic: 2025-03-31

A very short article with just this snapshot from our live frequency meter readings (which we are accumulating in Brisbane at 100ms cadence, noting that not all these are shown in the chart):

2025-03-31-at17-55-NEM-Mainland-Frequency

Without looking in any further detail, it appears that (just prior to 17:00 NEM time on Monday 31st March 2025) the mainland frequency wandered progressively lower, dropping below the lower bound of the NOFB.

Perhaps we’ll investigate further later…

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About the Author

Paul McArdle
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.

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