Yes – Unscheduled Price Responsive Resources did deliver price/demand oscillations in NSW on Monday 12th October 2026
Demand-side responses did occur in the face of large NSW price fluctuations.
price volatility
A wall of numbers … as the next step in exploring the price/demand oscillations in NSW on Monday 12th October 2026
We have a hypothesis for what the cause of these counter-cyclic oscillations (between price and demand) in NSW on Monday 12th October 2026. As a first step in exploring this hypothesis, here is a wall of numbers...
A framework for exploring what factors were contributing to the volatility in NSW on Monday 12th October 2026
Here's a short article identifying (part of) a framework that might be useful - for those who want to complete a fuller explanation of the volatility experienced in NSW on Monday 12th October 2026 (which was not caused by just one factor).
First price spike in NSW, at 14:10 (NEM time) on Monday 12th October 2026
As it happens (on this occasion) this snapshot from NEMwatch at 14:10 (NEM time) on Monday 12th October 2026 was pretty close to the mark to when it was forecast in earlier predispatch runs: Briefly: 1) The spot price in NSW is up at $1,341.98/MWh...
Here’s four factors contributing to volatility in VIC+SA+TAS on Wednesday evening 8th July 2026
The volatility experienced in southern regions on Wednesday evening 8th July 2026 was due to a combination of factors - here's 4 of them (though there are others, also).
Intraday price spreads thinned out in most regions over summer 2025–26
This short article looks at intraday 2-hour price spreads across the NEM over this past summer, showing that volatility thinned out in most regions compared with recent summers, with a major SA price event on the 26th of January proving an outlier.
Spot-exposed Demand Response illustrated in NSW on Friday 6th February 2026
We’re not going to cover every machination, but worth noting these pretty clear indications of what might be ~300MW sized Demand Response on two occasions on Friday afternoon 6th February 2026.
Early afternoon volatility again in NSW – Friday 6th February 2026
As noted in this NEMwatch snapshot at 13:35 (NEM time) on Friday 6th February 2026, a very similar pattern (perhaps including similar behaviours) is emerging today, with similar afternoon volatility in NSW.
Cutting through the noise
In this guest-authored article by Endgame Economics, Oliver Nunn examines growing 'noise' in NEM spot prices — how increasingly frequent oscillations appear to have a structural, intraday pattern, what may be driving it, and why it matters for market behaviour and battery investment outcomes.
Early morning price volatility in South Australia on Monday 8th December 2025
There was some early morning price volatility in South Australia on Monday 8th December 2025 - a social media update from Michael Caravaggio from EPRI internationally prompts this article.
Daytime price volatility in NSW on November 26th, 2025
A quick snapshot of regional prices, where the spot price in NSW hit the MPC at 11:00am NEM time.
Record intra-day price spread as the NSW spot price goes near the market floor, after hitting the market cap on Tuesday 25th Nov 2025
So far today we've seen a $21,019.65/MWh intra-day price spread in NSW, underscoring just how far prices can swing in the NEM.
Early afternoon volatility in NSW on Thursday 20th November 2025
We’re busy focused on other things at present, so just a NEMwatch snapshot at 13:25 (NEM time) on Thursday 20th November 2025 to mark some volatility in the NSW region.
Volatility in FCAS (Regulation and Contingency) prices in Tasmania on Wednesday 5th November 2025
A quick record of some volatility today in Regulation (and Contingency) FCAS prices in Tasmania on Wednesday 5th November 2025.
An initial look at the Spot Price spike in NSW at 17:55 on Friday 10th October 2025
There was a short-lived (but interesting) price spike for ENERGY in the NSW region on Friday evening 10th October 2025. Here's a first look.
A ~50-day view of rising spurts of volatility in the LOWER1SEC FCAS market in South Australia
With Administered Pricing in South Australia ongoing today, we take a longer-term look (across the past ~50 days) in the escalating pressure on Cumulative Price for LOWER1SEC FCAS in South Australia.
Volatility within the contingency FCAS market in SA today, Thursday 24th July 2025
A short post to note some price volatility for the 'Lower 1 Sec' contingency FCAS commodity in SA today, with prices flickering between the FCAS price floor and the market price cap.
The trend continues: a review of Q2 2025 spot prices
For nearly a decade, we’ve published annual reviews of Q2 prices to highlight the growing volatility during this period. Here’s our latest edition, examining how Q2 2025 compared.
Triple C conditions (cold, calm and cloudy) across the NEM last Thursday evening 26th June 2025
Carl Daley examines the underlying conditions and outcomes that occurred last Thursday evening, the 26th of June.
An initial review of demand response on Wednesday 11 June 2025
Wednesday evening 11th June 2025 was a period of tight supply-demand balance, hence energy price volatility – and so this article reviews the response of the demand-side.