Glitch in P30 demand forecast for QLD on Tuesday evening 29th October 2024

Here’s a short (and belated) article we did not have time to complete yesterday:

1)  With respect to a sizeable error in P30 predispatch forecast for ‘Market Demand’ in QLD on Tuesday evening 29th October 2024;

2)  That occurred over several sequential runs; and

3)  Which was noted by AEMO in two Market Notices during that evening.

Firstly, we utilise a snapshot from the ‘Forecast Convergence’ widget in ez2view at the 08:05 dispatch interval snapshot we prepared yesterday (Wednesday 30th October 2024) highlighting the stark error:

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

The image above we prepared yesterday, but did not have time to publish.

Secondly, useful to copy in the key aspects of the Market Notices for future reference:

________________________________________________________________________________________________

Notice ID            119666
Notice Type ID        Subjects not covered in specific notices
Notice Type Description    MARKET
Issue Date            Tuesday, 29 October 2024 at 19:43
External Reference        Pre dispatch demand forecast – Qld region
________________________________________________________________________________________________

AEMO ELECTRICITY MARKET NOTICE

Pre dispatch demand forecast – Qld region

AEMO is aware of an error in the Queensland pre dispatch demand forecast.
AEMO is currently working to resolve the issue.
Dispatch results are not impacted.

Manager NEM Real Time Operations

… then:

________________________________________________________________________________________________

Notice ID            119667
Notice Type ID        Subjects not covered in specific notices
Notice Type Description    MARKET
Issue Date            Tuesday, 29 October 2024 at 21:02
External Reference        Update – Pre dispatch demand forecast – Qld region
________________________________________________________________________________________________

AEMO ELECTRICITY MARKET NOTICE

Update – Pre dispatch demand forecast – Qld region

Refer market notice: 119666

The issue relating to the Queensland Pre dispatch demand forecast has been resolved.

Manager NEM Real Time Operations

When we learn from AEMO the cause of the glitch, we also might post this here in a subsequent article.