High NSW price forecasts not materialising in dispatch, 29th November 2024
A curious phenomenon we’ve been watching with interest today has been the somewhat persistent and alarmingly high predispatch price forecasts for NSW.
‘Constraint Dashboard’ widget
There are several widgets in the ez2view software that can help users analyse and interpret constraint data … including (but not limited to) these two:
1 The ‘Constraint Sets’ widget …
(a) Which is more focused directly on Constraint Sets
(b) Remember that Constraint Sets are ‘invoked’ … and contain one or many Constraint Equations .
2 Specifically with respect to Constraint Equations:
(a) About many Constraints:
… other widgets
(b) About a single Constraint Equation:
i. The ‘Constraint Dashboard’ widget … with articles utilising this widget (hopefully, if we remember) tagged here.
The effect of the ‘S_PPT+SNPT+BLVR_220’ Constraint Equation on Monday 23rd September 2024 (Part 4 of a Case Study)
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…
Delivering oscillations, whilst seeking to minimise oscillations? A Case Study (Part 1?) of Darlington Point Solar Farm on Thursday 29th August 2024
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.
Which Solar Farm DUIDs were curtailed at 12:35 on Sunday 1st September 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?’
A brief look at NSW volatility at 18:10 on Monday 20th May 2024
A question from a WattClarity reader this morning prompts this quick-and-cryptic review of NSW price volatility at 18:10 on Monday 20th May 2024, and particular output profile of Queanbeyan BESS
A quick look at the ‘N::N_CTYS_2’ constraint equation, with respect to Wednesday 8th May 2024
The ‘N::N_CTYS_2’ constraint equation (invoked due to a network outage on the Collector to Yass (3L) line) was one of the constraint equations material in volatile price outcomes in NSW on Tue 7th May 2024 and Wed 8th May 2024.
An initial exploration of QLD’s spike at 14:30 on Thursday 21st December 2023
An initial look at the ‘out of the blue’ price spike in QLD at 14:30 on Thursday 21st December 2023.
Over four hours of volatility in the SA region on Friday evening 11th August 2023
Some quick notes about volatility in SA on Friday evening 11th August 2023.
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.
Using the (draft of) GSD2022 to investigate those Solar Farms suffering significant curtailment
An article on RenewEconomy this week (about some analysis by analysts at ANU) coincided with our review of sequential drafts of the GSD2022, and prompted this article to have a look at some reported lost production at a number of solar farms across the NEM.
Spot volatility in the NSW region on Monday morning, 12th December 2022
First day back in the NEM after a break and I see the that the ‘N-RVYS_2’ Constraint Set is contributing to morning price volatility in the NSW region again.
Case Study of the ‘N::N_UTRV_2’ constraint equation – Friday 28th October 2022
A detailed look at the ‘N::N_UTRV_2’ constraint equation (focusing specifically on the spike at 17:30 on Friday 28th October 2022), drawing heavily on the newly-released ‘Constraint Dashboard’ widget in ez2view.
Low wind on Friday 4th November 2022
Following a client request on Friday 4th November, here’s a quick look at the low wind conditions occurring on that day.
Quick initial notes about price spike at 17:30 on Friday 28th October 2022
A quick look at a brief price spike in NSW and QLD on Friday evening 28th October – which appears to be related to a Ravine -Yass(2) 330kV line outage.
Sequence of events in Tasmania on Friday 14th October 2022 (initial look)
On Friday 14th October we saw a significant system event in Tasmania – with storms downing power links, leading to large (530MW) loss of load and trip of Basslink. In this article we take a first look at the sequence of events…
Morning volatility in South Australia on Friday 8th July 2022
A quick look at this morning’s volatility in South Australia.
Morning price spike in South Australia on Monday 6th June 2022
A quick look at a price spike at 06:45 on Monday morning 6th June … that has some parallels to yesterday evening.
Quick review of a price spike on Sunday evening 5th June 2022
A short walk through Sunday evening’s ‘out of the blue’ price spike in the South Australian region.
Who gets to run when everyone bids the same? A crash course in disorderly bidding and tie-breaking
Marcelle explores the little-understood concept in NEM dispatch of the tie-break principle, using the new ‘Constraint Dashboard’ widget in ez2view.
Market Volatility (and low IRPM) on Monday evening 16th May 2022 in QLD region
A short article about this evening’s market volatility in the QLD region on Monday 16th May 2022