A cold evening drives NEM-wide demand high, and IRPM low, on Tuesday 20th June 2023
The 'Australian Energy Week' conference this week in Melbourne, and the NEM this evening has given a real-time example of some energy transition challenges.
Market Operations
Transmission outage of the Dapto -to- Kangaroo Valley transmission link in southern NSW (line 18) … and spot volatility
For several reasons we take a look at a transmission outage in southern NSW that contributed to some volatility seen in QLD and NSW in the second half of May ... and might also...
The never-ending (horror) story at Callide C … more long delays in expected Return-to-Service
More updates recently about the Callide C power station. Looks like we'll be waiting a while longer for the (delayed again) return to service...
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.
(Early!) winter evening volatility returns to QLD and NSW on Wednesday 24th May 2023
A quick article to capture volatility in QLD and NSW on Wednesday evening 24th May 2023.
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...
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.
A second (still rushed) look at volatility in NSW very early on Monday 1st May 2023 … a possible snag with Liddell retirement from market data systems?
Taking a second look at the very early morning volatility in the NSW region on Monday 1st May 2023, we've used the 'Constraint Dashboard' widget in ez2view to get so far ... and then...
Case Study of Tuesday 16th February 2021 (Part 1) … large instance of collective over-performance for Semi-Scheduled units
Another short article today presenting an overview of Aggregate Raw Off-Target (AggROT) for Semi-Scheduled units on 16th February 2021 (the largest incidence of collective over-performance at that time).
Case Study of Tuesday 23rd August 2022 (Part 1) … large instance of collective over-performance for Semi-Scheduled units
Another short article today (from GenInsights Quarterly Update for Q3 2022) presenting an overview of Aggregate Raw Off-Target (AggROT) for Semi-Scheduled units on 23rd August 2022.
Case Study of Friday 20th January 2023 (Part 1) … large instance of collective over-performance for Semi-Scheduled units
Another short article today (also from GenInsights Quarterly Update for Q1 2023) presenting an overview of Aggregate Raw Off-Target (AggROT) for Semi-Scheduled units on Friday 20th January 2023.
Case Study of Friday 3rd February 2023 (Part 1) … two consecutive large instances of collective under-performance for Semi-Scheduled units
A short article today (whilst in the midst of finalising GenInsights Quarterly Update for Q1 2023) presenting an overview of Aggregate Raw Off-Target (AggROT) for Semi-Scheduled units on Friday 3rd February 2023.
Glitch with Victorian SCADA data triggers (>24 hour) Market Suspension in Victorian Region – Saturday 22nd April 2023
In an event (that seems) similar to 17th March 2023, a glitch in SCADA leads to the suspension of the market in the Victorian region on Saturday afternoon/evening 22nd April 2023.
Delving deeper into dispatch availability self-forecasting performance
We delve deeper into dispatch availability self-forecasts and the assessment process to further enhance our understanding of this important aspect, testing sensitivity to gate closure times and requirements on minimum intervals.
Case Study of 17:05 on 27th October 2022… Part 4: the geographical spread of +861MW AggROT
In the fourth instalment of this ongoing case study, Dan Lee maps the locations and contributions of the semi-scheduled units that contributed to the +861MW Aggregate Raw Off-Target that occurred on the afternoon of...
AEMO published Preliminary Report into NSW brief market suspension on 17th March 2023
On 6th April 2023 the AEMO published this preliminary report into the brief market suspension that occurred in NSW on 17th March 2023.
AFR reports Callide C co-owner (with CS Energy) goes into voluntary administration
AFR and the Australian (and elsewhere?) there are reports of the co-owner of Callide C (with CS Energy) being placed in voluntary administration.
Brief (55 minute) Market Suspension on 17th March 2023 in NSW due to service interruption of SCADA systems
A just-announced AEMO market notice has declared a temporary suspension of the NSW market.
Case Study of 17:05 on 27th October 2022 … part 3 … (+861MW AggROT – source of AvailGen)
In Part 3 of this Case Study, we look at the source of the Dispatch Interval Availability forecasts for these units at 17:05 on 27th October 2022 (i.e. Self-Forecast or something else, incl AWEFS/ASEFS).
Case Study of 17:05 on 27th October 2022 … part 2 … (+861MW AggROT – individual units)
In Part 2 of this Case Study, we look at those 15 x Semi-Scheduled units highlighted with large deviations (mostly under-performance) at 17:05 on 27th October 2022 in order to understand more.