Earlier today we posted some charts trending the incidence of large instances of collective under-performance across all Semi-Scheduled units (and the occasional instance of large collection over-performance). In...
It's ~18 months since we took a look at the trend of large instances of Aggregate Raw Off-Target across all Semi-Scheduled units. In this article we update the...
The (concerning) frequency spike across the NEM in the middle of the day (Tuesday 19th August 2025) has triggered many proximate questions - understandable - but also has...
On Thursday 21st August 2025 (a week earlier than I'd anticipated) the AEMO has released its 2025 ESOO.
Amongst the news articles this morning that are energy related was one noting a possible delay to the closure of Torrens Island. We take a quick look...
It appears it was unit availability used to set the target for dispatch that went awry, rather than unit output.
Oliver Nunn from Endgame Economics argues that we must begin to think about the distribution of prices in the NEM as a function of weather.
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...
Part 3 in an evolving series of articles about a series of the network outage(s) on the Tailem Bend - Tungkillo 275kV line that's driven LOWER1SEC prices through...
Among other aspects, a large dip in solar UIGF aligns with the frequency deviation observed on 19th August 2025.
On Tuesday the 19th of August between 11:45 and 12:20 there was a significant frequency deviation on the mainland.
With Administered Pricing of all 10 x FCAS products in South Australia continuing into Monday 18th August 2025 (no surprise there), we take a second look.
On the weekend we noticed the release of the 2025 Victorian Transmission Plan, and thought it worth flagging here.
Another quick article for Sunday 17th August 2025 – this one noting a new 'lowest ever*' point for 'Market Demand' in Queensland, just shaving prior record from a...
AEMO notes that 'it has determined that an administered price period will commence at the trading interval starting 0520 on 17 August 2025' for FCAS in South Australia....
A quick first look, following the loss of 292MW of 'Market Demand' in Tasmania to 14:11 (NEM time) on Saturday 16th August 2025.
Briefly recapping some of the news pertaining to Eraring Power Station over the past two days.
A belated note that the AEMC published a draft report on their review of the (nearly 4 year old) WDRM initiative - and noting that submissions close today.
We use the elements available dataset to better understand turbines available at Bulgana in recent months.
Worth noting, as I've just become aware, that submissions close tomorrow on AEMO's consultation on Primary Frequency Response (PFR) Test Guidelines for Semi-Scheduled Plant