“The energy price in New South Wales increased to the market cap price of $10,000/MWh at trading intervals (TIs) ending 13:00hrs, 13:30hrs and 15:00hrs on Friday 31 October 2008. The Queensland region saw energy prices rise to a maximum of $3,618.51/MWh at TI 14:30hrs. Mainland Frequency Control Ancillary Services (FCAS) prices reached $105.13/MWh at 14:50hrs. The Tasmanian region saw a negative energy price of -$0.43/MWh for the trading interval ending 15:30hrs. Energy prices in other regions were not materially affected.”
A Market Event Report has been published on the NEMMCO AEMO website at
NEMMCO says that a system incident report covering the reliability of the power system during this event will be published separately (and we’ll link to it, when we see it).
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.
Just over 24 hours from making these comments, we saw prices jump sky-high in the mainland regions, and go the other way (to the negative price cap) in Tasmania.
AEMO’s forecast showing Sunday evening’s electricity demand for Queensland could reach a new record with the 40 degree temperatures in South-East Queensland.
In this (lengthy) article today, Paul McArdle uses the newly released GSD2020 to take a look at the units that were most frequently impacted by constraints during calendar 2020 – with a view to how this has changed from 2011 to 2020.
New guest author, Ryan Esplin progressively builds a more precise model of the NEMDE dispatch process to illustrate why the stylised ‘Merit Order’ bid stack model is increasingly not enough to explain dispatch and price outcomes in the NEM
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