A quick note on Thursday evening 20th November 2025 to record this large size (214MW) drop in ‘Market Demand’ in the 17:50 dispatch interval NEM time this evening:
This was captured in our ‘Notifications’ widget within ez2view as it happened. For more context of what’s been happening in South Australia, here’s a NEMwatch snapshot:
Clearly the rapid run-up and then drop in ‘Market Demand’ in South Australia (axis on the left) stands out. Was it real, or was it another data glitch?
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.
Several media outlets are reporting that Olympic Dam in South Australia has lost power, which may cause headaches for system operators with demand in South Australia forecast to go negative this weekend.
Following AEMO’s warnings issued yesterday about possible extreme heat next week in Adelaide, Melbourne and Sydney, I take more of a look at what might transpire and compare it to historical correlations between cities.
Guest author, Allan O’Neil, invests some time to explore a number of different aspects of Easter Saturday (11th April 2020), each noteworthy in their own right (including low demand, high percentage share renewables, negative prices and dynamic bidding)
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