Case Study Part 4 – Who did What – in QLD on Tuesday 13th October 2020?
In part 4 of this expanding Case Study of the unexpected price spike on Tuesday 13th Oct, linked to a large & sudden drop in output across 10 solar farms, we take a quick...
price spike
Case Study Part 3 – digging still deeper, about what happened in QLD on Tuesday 13th October 2020
In part 3 of this expanding Case Study of the unexpected price spike on Tuesday 13th Oct, linked to a large & sudden drop in output across 10 solar farms, we dig deeper to...
Case Study Part 2 – did Rooftop PV kill Large Solar Farm output (and cause the price spike) in QLD on Tuesday 13th October 2020?
Based on some preliminary analysis of the Powerlink's 'Qdata' set (available in ez2view) we present our current hypothesis as to the sequence of the events yesterday in the QLD region, where 600MW of solar...
Case Study part 1 – Queensland price spikes to $15,000/MWh at 09:45 on Tuesday 13th October 2020 … coincident with many Large Solar Farms (tripping**)
Alerted to a price spike at 09:45 this morning in the QLD region, we discovered some reduction in load (spot-exposed Demand Response probably) and also a large collective trip in Solar Farm output (reasons...
Some late winter mainland volatility – Monday evening, 24th August 2020
Some SMS alerts notified me of some volatile dispatch intervals this evening in mainland regions. So I took a quick look...
‘Dunkelflaute’ Down Under
Yesterday evening (Tue 9th June 2020) saw an example of ‘dunkelflaute’ across the NEM. It's a phenomenon we will see increasingly as the transition progresses, so it's something we should be seeking to understand,...
Bushfires under interconnectors through Snowy Mountains cause separation of NSW from VIC region
A quick summary of what's just happened this afternoon (15:10) with the separation of VIC-to-NSW interconnector due to bushfires that have been plaguing the NEM this summer...
Not-So-Quick review of price spike in South Australian region yesterday (Thu 19th Dec) evening
Took 2-3 times longer than planned (as there were a few different interesting observations that came out) but here is our initial - and perhaps only! - review of what happened in South Australia...
Price volatility in VIC and SA on Friday 1st March
Some quick notes about the volatility seen in the NEM on Friday 1st March 2019 - a hot day in Victoria and South Australia, the first day of Autumn.
Factors contributing to an unforeseen price spike in NSW at 16:15 on Thursday 31st January 2019
Taking a brief (well, actually longer than intended) look into the various factors that delivered a price spike above $10,000/MWh on Thursday 31st January in NSW - and thinking through the implications for one...
NEM Scheduled Demand tops 33,000MW and prices spike in the south on Tuesday 22nd January
Some snapshots from NEMwatch recording a day where NEM-wide demand breached 33,000MW and prices spiked above $1000/MWh in VIC and SA
Dispatch Price spikes above $12,000/MWh in VIC and SA today
Two quick snapshots of a high priced day in Victoria and South Australia - with the price jumping above $12,000/MWh at 15:50
Network outage, and low wind, combine to drive spot price volatility in the SA region on Thursday 26th April
An unexpected network outage in the south-east of South Australia restricts supplies from Victoria at a time of low wind supply in South Australia and results in the dispatch price spiking to $14,200/MWh from...
Not quite summer and volatility returns to Victoria and South Australia
Some volatility with the hot weather on Wednesday 29th November - is this a precursor for summer?
A sudden series of SA spikes
Tight import limits on the Heywood interconnector and a lull in wind output saw price volatility return to South Australia earlier this week
Overview: Queensland volatility 1-2 Feb 2017
A volatile couple of days in Queensland, with demand response evident
Initial Review: NEM-wide Price Event, Monday 30 Jan 2017
Extremely hot weather in NSW and the NEM’s underappreciated “rail gauge mismatch” contributed to a sharp multi-state price spike during the afternoon peak
Quick Review: $13,800/MWh Queensland spike Mon Jan 30
Quick review of an isolated early morning spike in Queensland
Initial Review: $14,000/MWh Spike in Qld, Fri 27 Jan 2017
A look at last Friday’s short sharp price spike in Queensland and why it led to negative settlement residues on the interconnection with NSW
South Australia hit by two price spikes
The volatility of the NEM was showcased again on Monday as South Australia experienced two major price spikes in the space of an hour. Using NEM-Watch's play back feature (screenshot below) we were able...