High temperatures in QLD yesterday drag demand close to all-time-maximum

A hot day in Queensland yesterday (Thursday 10th December) dragged demand to within 100MW (or 1%) of the all-time maximum demand for the QLD region.

The dispatch demand target peaked at 8755MW at 15:40 on the day, just 83MW shy of the all-time record of 8838MW.

As shown in the snapshot taken from NEM-Watch at 13:25 (market time) on the day, the demand in QLD was high (relative to the all-time maximum demand, as is implied by the red colour of the region).  In contrast, demand in the south and west is very mild, because of the cooler temperatures. 

2009-12-10 at 13-25 NEM-Watch

This resulted in the NEM-wide demand level being a very modest 28,095MW.

As a result of the high demand, and constraints on the interconnection through to NSW, the QLD price experienced a modest jump on the day.

For a more detailed view of what was happening within the QLD region, I have attached a snapshot from the current version of the software we have developed more specifically for market traders, ez2viewAustralia (showing the 14:00 dispatch interval):

2009-12-10 at 14-05 qld view

This tool incorporates display of a live feed of intra-regional transmission flows and zonal demand levels for nodes in QLD, as supplied by Powerlink Queensland.

This tool also uses colour-coding to highlight relative levels of demand.  As can be seen, the high demand on the day was focused more on the south-east corner of QLD (which can be understood by looking at the relatively mild temperatures in north Queensland shown in NEM-Watch above).


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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