Today, we have the advantage of ‘next day public’ data, so are able to peel some more layers of the onion (in this article 'Dispatch Error') - with respect to the significant Frequency Spike...
Given the large ramp in frequency around midday Thu 6th Nov 2025, coincident with a large apparent ramp in 'Market Demand' in Victoria, we suspect a data glitch.
As the 5th article in an evolving series that progressively explores the (apparent self-forecasting glitch and) frequency spike on Tuesday 19th August 2025, we take an early look at Solar Farm performance.
The (concerning) frequency spike across the NEM in the middle of the day (Tuesday 19th August 2025) has triggered many proximate questions - understandable - but also has raised these 3 Broader Questions.
The incident description in the scheduling error declaration provides us with a glimpse into the underlying cause.
On Tuesday 29th April 2024 we noted a glitch in some ez2view widgets stemming from changes in the EMMS triggered by the upgrade process for Data Model v5.5.
Which much attention focused on Queensland (in the wash out that has been TC Albert) a rogue Administered Pricing Notice (MN125439) for South Australia was a head scratcher, on Sunday 9th March 2025.
Friday 31st January 2025 (appeared to) experienced a very large drop in demand in NSW in a single dispatch interval - but we're now suspecting some form of data/operational glitch. However we wonder, if...
Taking a second look at the (apparent) large drop in NSW 'Market Demand' on Friday afternoon 31st January 2025. Was it a data glitch instead?
No sooner had we hit on the article ‘‘Market Demand’ in Victoria ramps by 903MW in 10 minutes, on Monday 9th December 2024’ than we see an even larger, and faster, ramp down in...
A brief note to record a NEM production systems incident today, December 2, 2024. AEMO declared a major incident (INC0138848) for the Electricity Market Management System service with 4 Dispatch intervals missed. The date...
An interruption to the NEM wholesale market data service resulted in a delay of data to industry today, 19 November, 2024.
A brief look into whether rooftop PV forecast were the driver behind the demand forecast glitch on 29 October 2024.
A short (and belated) article with respect to a sizeable error in P30 predispatch forecast for ‘Market Demand’ in QLD on Tuesday evening 29th October 2024;
AEMO has confirmed our earlier hunch of a Scheduling Error in the immediate aftermath of the Liddell unit retirements.
A just-announced AEMO market notice has declared a temporary suspension of the NSW market.