“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.
For only the third occasion in the 10 1/2 years that the NEM has been operational, the Cumulative Price Threshold (CPT) has been reached. Yesterday evening, the CPT was reached in the Tasmanian region.
Three price spikes in the QLD region on Saturday 10th April 2021 help to remind us that how increasingly dependent we are on various machinations of the weather (including, on these occasions, cloud cover and solar output).
Through the week we’ve seen new highs for wind production (NEM-wide) and also some low levels of production, as well – mirroring the political debate. The challenge has serious implications, however, and the AEMO sessions mentioned might be one way to learn more.
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