CS Energy update on repairs to Callide C3 and C4 cooling tower
A quick article, following a social media update by CS Energy on the repair process for the cooling towers at Callide C.
Market Operations
Another (Tesla) big battery fire in the NEM … this one at Bouldercombe BESS in QLD
It’s Wednesday morning 27th September 2023 and the fire that started last night at Bouldercombe BESS (Tesla battery for Genex) is still burning.
Federal Court finding relating to Pelican Point CCGT on 8th February 2017 … and upcoming market changes
Also in the news this week (a Federal Court judgement in relation to AER instituted proceedings against Engie in relation to Pelican Point from 8th Feb 2017) … which is coincidental with upcoming changes in the market for generator obligations.
System Strength constraints strike again in northern QLD – this time on Wednesday 6th September 2023 (Part 1 of Case Study?)
On Wednesday 6th September many Semi-Scheduled (wind and solar) units in northern QLD were ‘constrained down’ for System Strength reasons. We take a first look as part 1 of a Case Study (more parts *may* follow).
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.
Case Study of high AggSchedTarget on Thu 30th Jan 2020 and Fri 31st Jan 2020 (part 1!)
In this article we delve in deeper on Thu 30th Jan and Fri 31st Jan 2020 … two days that saw extreme levels of ‘Aggregate Scheduled Target’ (i.e. AggSchedTarget – a requirement for firming capacity). A timely review, given two developments arriving tomorrow (on Thursday 31st August 2023).
Implemented: Enablement of bid energy MaxAvail for semi-scheduled generators
The change to use MaxAvail from the energy bid, for semi-scheduled units, was implemented on 7 August 2023.
Enablement of ‘MaxAvail’ in the Bid for Semi-Scheduled units to go live (Mon 7th or Tue 8th Aug 2023) … and other enhancements in future
2 x AEMO Market Notices this afternoon prompt this article about four upcoming Market Enhancements … with the first to planned to commence from next Monday 7th August 2023
Mid-July update on repairs on Callide C3 and C4 cooling tower
A quick note on WattClarity to tie in an update (earlier this month) from CS Energy on the rebuild of the cooling tower for Callide C3 and C4.
Mid-afternoon prices elevated with modest wind and modest solar
A quick look at elevated prices mid afternoon on Monday 3rd July 2023.
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.
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 do in the second half of June 2023.
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 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.
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 added some *speculation* about how it might have been related to the retirement of Liddell from market systems. Is this accurate?
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.