Case Study of 16:05 on Friday 28th September 2018 (aggregate Raw Off-Target–333MW for Semi-Scheduled units)
This is the 12th Case Study in this series (looking at each of 98 extreme incidents). This one is simpler than the 11th Case Study!
Articles by Paul McArdle
One of three founders of Global-Roam back in 2000, Paul has been CEO of the company since that time.
As an author on WattClarity, Paul's focus has been to help make the electricity market more understandable.
What effect has Stage 4 Lockdown in Victoria had on electricity consumption in the NEM?
In this 5th article in a series, we look at the impact on electricity consumption of Stage 4 Lockdown associated ‘State of Disaster’ in Victoria
Case Study of 02:35 on Saturday 15th September 2018 (aggregate Raw Off-Target +355MW for Semi-Scheduled units)
This is the 11th Case Study in a series (looking at extreme outcomes of Aggregate Raw Off-Target for Semi-Sched units). We’ve rolled into 2018, now and (coincidence?) this one is much more complex than the first 10 from the earlier years …
Case Study of 22:40 on Monday 18th December 2017 (aggregate Raw Off-Target -310MW for Semi-Scheduled units)
This is the 10th Case Study in a series working through 98 discrete dispatch intervals of extreme Aggregate Raw Off-Target for Semi-Scheduled events. This Case Study looks at only 1 of 5 occasions of extreme collective OVER-performance.
Solar production suffers significantly (NEM-wide) today with widespread cloud and rain event
Some quick notes today, to document high-level data (to be explored later) relating to some significantly depressed solar harvest data today due to the widespread cloud/wind event.
Case Study of 19:25 on Thursday 5th October 2017 (aggregate Raw Off-Target +305MW for Semi-Scheduled units)
This 9th case study in this series advances us into October 2017, where we see another example of an extreme outcome for collective under-performance. Most notably this happens across 5 Wind Farms (with one unit completely tripping).
Case Study of 16:20 on 28th September 2016 (aggregate Raw Off-Target +894MW for Semi-Scheduled units)
This 8th case study in this series presents tabular results for all Semi-Scheduled DUIDs which were operational at the time of the SA System Black event.
Case Study of 13:10 on Thursday 23rd June 2016 (aggregate Raw Off-Target +320MW for Semi-Scheduled units)
This 7th case study in a series takes a look at 1 of 3 dispatch intervals during 2016 that saw extreme under-performance (in aggregate) across all Semi-Scheduled plant.
Case Study of 04:30 on Thursday 8th January 2015 (aggregate Raw Off-Target -314MW for Semi-Scheduled units)
This 6th case study in a series takes a look at only 1 of 5 Dispatch Intervals featuring over-performance in a total of 98 that saw extreme Aggregate Raw Off-Target performance across all Semi-Scheduled plant (rare over-performance and more common under-performance).
Case Study of 16:35 on Wednesday 15th October 2014 (aggregate Raw Off-Target +443MW for Semi-Scheduled units)
For the 5th Case Study in this series (looking at individual outcomes of extremes in aggregate Raw Off-Target performance across all Semi-Scheduled plant) we look at an even rarer time when the aggregate discrepancy was above 400MW. This time collective under-performance.
AEMO tenders for Short-Notice RERT Panel for Summer 2020-21
This morning the AEMO have called for expressions of interest for the ‘Unscheduled Short-Notice RERT’ for summer 2020-21.
Case Study of 03:25 on Tuesday 5th April 2016 (aggregate Raw Off-Target +359MW for Semi-Scheduled units)
After publishing three Case Studies on Saturday, this 4th Case Study in a long series is much more complex – with 8 different Semi-Scheduled Wind Farm units across VIC and SA exhibiting significant deviations from Target. This Case study looks at April 2016, which is also 3 years after the first 3 case studies.
Case Study of 03:10 on Saturday 28th September 2013 (aggregate Raw Off-Target +331MW for Semi-Scheduled units)
Third case study today – and last one looking back at 2013. This one is a bit more complex than the first two.
Case Study of 12:35 on Wednesday 14th August 2013 (aggregate Raw Off-Target +391MW for Semi-Scheduled units)
Like was the case on 4th July 2013, the cause of this large Aggregate Raw Off-Target result (across all Semi-Scheduled Generators) was a single unit trip.
Case Study of 14:55 on Thursday 4th July 2013 (>300MW Aggregate Raw Off-Target across all Semi-Scheduled Units)
Does not take long to see why this particular dispatch interval was one of the few dispatch intervals (before 2019!) flagged in our top-down analysis of aggregate Raw Off-Target across all Semi-Scheduled units in the NEM….
AEMO released 2020 Integrated System Plan (ISP)
A back-dated article about the AEMO’s 2020 ISP
Revenues for Wind Farms (and Solar Farms) in the NEM take a hit
A question over the weekend prompts this article, which follows from discussions to a Vestas-organised audience about revenue patterns and trends for Wind Farms in the NEM.
Extrapolating from the trend of ‘Aggregated Raw Off-Target’ results, to yield some clues to what the future might hold … and one challenge for NEM 2.0
Following on from Friday’s article (which considered the AER Issues Paper) this article delves into more detail of those extremes of ‘Aggregate Raw Off-Target’ across all Semi-Scheduled units that have been recorded over the past 10 years. There’s a clear clustering of cases in 2019 – what does it mean?
Striving to understand the underlying challenges with Semi-Scheduled generators (re AER Issues Paper)
Prompted by the recent AER Issues Paper (submissions on that due today – Friday 24th July) but also aware that I’ve not yet published some broader thoughts in response to the ESB’s requests for input into their Discussion Paper on the Two Sided Market concept, I’ve posted some further thoughts. These have been informed by a longitudinal analysis of Aggregate ‘Raw Off-target’ values across all Semi-Scheduled plant.
The NEM consumes (at least) 10GW of supply from renewable plant on Sunday 19th July 2020
A short review, as it happens, on a day where renewable production reached 10,000MW in aggregate across the NEM.