Spot price volatility in South Australia on Thursday evening 9th Nov 2023

A quick (and somewhat cryptic) article with a snapshot from ez2view time-travelled back to 19:00 yesterday (i.e. Thursday 9th November 2023, remembering NEM time) to provide a record of some spot price volatility that’s featured in some conversations:


Note that:

1)  The interconnectors are limited:

(a)  the ‘V::S_SETB_TBSE_2’ constraint equation (inside the ‘S-TBSE’ outage-related constraint set) is limiting flow west on Heywood, and

(b)  the ‘V^^SML_NIL_3’ constraint equation is limiting flow west on Murraylink.

2)  Solar has gone to bed;

3)  And wind is relatively low … and lower than expected (as seen below).

Here’s another snapshot from ez2view – this one including three different ‘Forecast Convergence’ widgets that help to paint the picture of what was expected ahead of time:


Remember this widget allows to ‘look up a vertical’ to see ‘that other dimension of time’.

Here’s a filtered, trended bid stack view (SA Generators + WDRU, but excluding Wind and Solar), looking back 2 days in ‘Bids & Offers’ widget:


Visible shifting of volume into higher-priced bid bands (i.e. into the reddish colours).



No other comments at this point… but might refer back to this later.

About the Author

Paul McArdle
One of three founders of Global-Roam back in 2000, Paul has been CEO of the company since that time. As an author on WattClarity, Paul's focus has been to help make the electricity market more understandable.

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