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.
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 there was ~1,000MW more energy injected into the grid than required over a sustained period, what stopped the frequency flying through the roof?
Curiosity (part triggered by some conversations I noticed on social media) drove me to have a look at the implied ROCDOWN in the AEMO 4-second data for the 5 facilities (10 DUIDs) involved in rapid ramp down on Tuesday 13th February 2024.
Today, we have the advantage of ‘next day public’ data, so are able to peel some more layers of the onion (in this article ‘Dispatch Error’) – with respect to the significant Frequency Spike on Thursday 6th November 2025 (which appears due to some gremlins in AEMO’s ‘Market Demand’ calculations for Victoria).
This is the 2nd of 4 Case Studies to follow on from Tuesday’s main article (summarising results across 105,120 dispatch intervals through 2019 for ‘all Coal’ and ‘all Wind’ groupings). In this case, let’s look at the ‘worst’ case, in aggregate, where coal units over-performed compared to dispatch targets.
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