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.
price spike with unit trip
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.
Price spike in South Australia on Wednesday 23rd February 2022 – (perhaps) because of sudden drop in output at Bungala Solar Farm?
A price spike in SA on Wednesday 23rd February reminds us of a price spike in NSW on Monday 21st February … one due to coal, the other due to solar … but both illustrating *the same* underlying dynamic.
Price spike in NSW and QLD on Monday 21st February 2022 following trip of Eraring unit 2
As a real time reminder of the energy transition challenges, the trip of Origin’s Eraring unit 2 was a significant driver of the price spike in NSW to $15,100/MWh on Tuesday 21st February 2022.
South Australian price spike on Sunday 30th January 2022 with declining wind, and following (apparent) trips of Bungala 1 and 2 Solar Farms
A short look at this afternoon’s pricing volatility in the South Australian region with what appears to be coincident trips at 2 related Large Solar Farms.
Forecast for elevated prices in QLD again this evening – Wed 26th May 2021
Following yesterday’s incidents (plural!) we see prices forecast to be high this evening in QLD as well.
AEMO publishes Preliminary Incident Report about incident on Friday 12th March in South Australia
A short article this afternoon to link through to the Preliminary Report published by the AEMO, looking into what happened in South Australia last Friday (12th March 2021).
$15,000/MWh in South Australia on Friday 12th March 2021 … part 2 (what seems to have happened)
Prices have (finally!) subsided, so here’s an initial review of what I can see about what happened in South Australia on Friday evening 12th March 2021. Apologies for mistakes (it’s rushed, there will be some)…
Price spikes to $15,000/MWh in South Australia on Friday 12th March 2021 … part 1
The price has spiked in South Australia this evening (Fri 12th March 2021). Here’s Part 1…
Yesterday’s unexpected loss of ~500MW of rooftop PV in South Australia (another type of Contingency event – Credible, or Non-Credible?)
Wednesday 13th January 2021 was a busy day in the NEM, with a couple of different events occurring. In this article we explore a sudden and unexpected drop in output across both rooftop PV and large-scale solar in South Australia that delivered both price spikes, and also broader questions about emerging challenges for the grid (and market).
Both units trip at Callide C on Wednesday 13th January 2021
A pretty rare event in the NEM, when two units trip simultaneously … so a short article on WattClarity as a result.
What’s up with the fleet of 16 x coal-fired units in NSW?
Following a week where several days saw price volatility in NSW (with this being so extreme that Reserve Trader was triggered on Thursday 17th December) we’ve taken a look at the comparative performance of coal units across the NEM (and particularly in NSW) compared to prior years.
Liddell unit 3 out till perhaps March 2021 after transformer incident (serious injury to one person)
The publication by AGL Energy of the short note about the transformer incident (and injured worker) at Liddell unit 3 yesterday prompted me to have a quick look, following on from the volatility this week.
Short price spike in NSW on Tuesday 15th December 2020
A quick look at a spike in NSW price this afternoon above $3,000/MWh due to a number of different factors … including a trip of unit 3 at Eraring coal-fired power station.
Case Study Part 5 – Why did those constraint bind – in QLD on Tuesday 13th October 2020?
In part 5 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 detailed look at the constraint set ‘Q-BCNE_821’ invoked to deal with the transmission outage between H11 Nebo (in ‘North’ zone) and H10 Bouldercombe (in ‘Central-West’ zone)
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 explore… including wondering whether it would have been expected in advance.
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 generation was lost, causing the price to spike to MPC.
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 unclear).
7-day South Australian overview (Thu 30 May to Wed 5 June)
Spot Prices in South Australia were elevated over the past 7 days – here are some reasons why.