In Part 4 of this Case Study (with respect to spot price volatility in South Australia on Monday 23rd September 2024) we take a detailed look at the ‘S_PPT+SNPT+BLVR_220’ Constraint Equation, which was particularly meaningful in terms of dispatch outcomes…
There was an ‘Evening blast of spot price volatility in South Australia on Monday 23rd September 2024’ … roughly 6 weeks ago. Today, for several reasons, we start to take a closer look.
With AEMO forecasting possible ‘Minimum System Load’ in Victoria for the coming weekend, we take a look back at (our understanding of) some of what happened on Saturday 27th Sept and Sunday 28th Sept 2024, when similar conditions were forecast.
A case study, drawing heavily on various widgets in ez2view, looking at some large (and unexpected) oscillations in output at Darlington Point Solar Farm through a ~2 hour period on Thursday 29th August 2024.
On Sunday 1st Sept 2024, aggregate curtailment of Solar Resource from (Semi-Scheduled) Large Solar across the NEM reached 79.2% … in this follow-on article we explore the question ‘WHICH Solar Farms were curtailed … and WHY?’
An (initial and) short review of the solid block of high aggregate wind yield over the ~3 day date range (late Tuesday 28th May 2024 to late Friday 31st May 2024) … and how much this was expected in advance.
Finding some time to make some progress in compiling GenInsights Quarterly Updates for 2024 Q1, here’s a short Case Study of Thursday 22nd February 2024 (a day that saw significant collective under-performance of Semi-Scheduled units with respect to their Targets).
A quick look at the low point for NEM-wide IRPM on Sunday evening 4th February 2024.
Taking a quick look at the dispatch interval through this period of low aggregate wind harvest that also saw lowest aggregate VRE (Wind + Large Solar).
With GenInsights Quarterly Update for 2023 Q4 completed, and some time till the end of 2024 Q1, we’ve looked back at Tuesday 14th November 2023 (when AEMO had concerns about low System Strength in NSW) and looked at the level of inertia actually seen in the grid. A useful Case Study to say ‘what would have happened without Eraring?’
In this article we circle back to Tuesday 13th February 2024 to tick off a few more of the long list of questions about the ‘Major Power System Event’ – in this article with respect to operations of the Victoria Big Battery.
A short article looking at Friday 8th December 2023 looking at NEM-wide Aggregate Scheduled Target on the day.
A short note (in conjunction with some analysis for GenInsights Quarterly Updates for 2023 Q4) about the high level of IRPM seen on Sunday 1st October 2023.
An initial look at the ‘out of the blue’ price spike in QLD at 14:30 on Thursday 21st December 2023.
The second part of an ongoing case study examining two successive days of low VRE generation in early July 2023. This part examines IRPM, earlier forecasts of available generation and maps the availability by site location.
Guest author, Allan O’Neil, takes a detailed look at how VIC1-NSW1 transfer capability has been limited frequently due to constraints related to the 051 line in southern NSW, and what it means in terms of inter-regional settlements residue accumulations, market efficiency overall, and the energy transition.
A brief article as a first Case Study looking at Mon 3rd and Tue 4th July 2023, in conjunction with the compilation of GenInsights Quarterly Updates for 2023 Q3.
A brief article as a first Case Study looking at Friday 18th August 2023, in conjunction with the compilation of GenInsights Quarterly Updates for 2023 Q3.
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).
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).