Evening volatility again in QLD and NSW on Thursday 5th May 2022

For the fourth evening in a row this week, we’re seeing volatility in the QLD and NSW regions … and elevated prices in VIC and SA as well.  Here’s a snapshot from the 16:55 dispatch interval in NEMwatch :

2022-05-05-at-16-55-NEMwatch-QLDandNSW-spike

Without looking in too much detail at all, I suspect that similar conditions are occurring across NSW and QLD as occurred (with respect to the supply stack) on Tuesday 3rd May.

I did not (earlier this afternoon in discussions with a client) that the ‘N-RVYS_2’ Constraint Set* has been extended now till Saturday evening 7th May at 18:00 … whereas I’m pretty sure when I looked on Monday it was forecast to end tomorrow (Friday) evening.

* the ‘N-RVYS_2’ Constraint Set contains the offending ‘N::N_RVYS_2’ constraint equation that is limiting flow north on VIC-to-NSW to zero or negative numbers … i.e. flow south

This is noted here in this snapshot from ez2view:

2022-05-05-at-17-00-ez2view-N-RVYS_2-ConstraintSet

It looks like this constraint set was modified at 05:49 this morning … but the MMS by default does not recall the prior status.


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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