‘Market Demand’ in Victoria (apparently!) drops 3,100MW in 5 minutes, on Monday 9th December 2024 … a data glitch?!
No sooner had we hit
Operational Glitches
‘Market Demand’ in Victoria ramps by 903MW in 10 minutes, on Monday 9th December 2024
In Victoria on Monday afternoon 9th December 2024 we see ‘Market Demand’ has ramped up by 1,802MW in 25 minutes (including a ramp of 903MW in 10 minutes). Yikes!
Dispatch systems interruption on 2nd December, 2024
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 and time of the occurrence was…
Interruption to electricity market data on 19 November, 2024
An interruption to the NEM wholesale market data service resulted in a delay of data to industry today, 19 November, 2024.
P30 demand forecast glitch hunches
A brief look into whether rooftop PV forecast were the driver behind the demand forecast glitch on 29 October 2024.
Glitch in P30 demand forecast for QLD on Tuesday evening 29th 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 publishes interim report on Market Suspension on Thu 5th Sept 2024
Eight days after the event occurred, on Friday 13th September 2024 the AEMO published this ‘Preliminary Report: NEM Market Suspension on (Thursday) 5 September 2024’.
Recovery of System Frequency on Thursday 5th September 2024
An updated trend of system frequency to ~14:53 related to AEMO IT incident INC0136004 and Market Suspension.
AEMO issues Market Notice for Market Resumption at 15:10
AEMO declares that the suspension of the spot market will end at 1510 hrs on 05 September 2024.
AEMO declares Market Suspension from 13:55 on Thursday 5th September 2024
AEMO declares the spot market suspended from 13:55 on Thursday 5th September 2024 until further notice.
Drop in System Frequency on the Mainland on Thursday 5th September 2024
A quick look at how System Frequency trended down with the IT issues experienced at AEMO impacting on the dispatch process.
Gremlins in the dispatch process? (Thursday 5th September 2024)
Apparently some IT issues within the AEMO are causing issues with the AEMO dispatch process – on Thursday 5th September 2024.
Missing megawatts and phantom generation
Seven days ago, AEMO notified the market of a Scheduling Error from 24th Jan 2024 to 7th March 2024. A client asked us what it meant – so guest author Allan O’Neil has helped to explore and explain.
AEMO report on multiple incidents impacting SCADA over almost 3 years 2021, 2022 and 2023
Also last week, AEMO informed the market of the availability of a report outlining 18 discrete incidents, over a period of just under 3 years, that included SCADA failure in some way. The report also discusses what has been done to rectify.
AEMO notifies of Scheduling Error (Incident 60) from 24th Jan 2024 to 7th March 2024
A short note on Thu 21st March 2024, the day the AEMO notifies the market of a Scheduling Error (incident 60) spanning 24th January 2024 to 7th March 2024.
First output at Tallawarra B
A brief record, using ez2view, of the very early output data for EnergyAustralia’s Tallawarra B station.
Power Surge on 30th August 2023 affects Azure Services – and hence AEMO services (and GR services)
A quick status update, early on Thursday 31st August 2023, about issues at Azure (caused by a power surge) that has been affecting AEMO (and our) systems.
AEMO declares Scheduling Error (incident #54) with respect to post-Liddell snag
AEMO has confirmed our earlier hunch of a Scheduling Error in the immediate aftermath of the Liddell unit retirements.
Liddell’s ghost stalks the market
During early morning Monday 1st May prices spiked in the NSW quite unexpectedly. Guest author Allan O’Neil takes us into the complexities of the EMMS and NEMDE to help us understand the mechanics of how this happened.
AEMO preliminary report on VIC region suspension (loss of SCADA) on 22nd April
Here’s where to find AEMO’s preliminary report on the loss of SCADA on 22nd April 2023 in Victoria that led to that region being suspended for more than 24 hours.