System frequency at 11 am in 2026, September update
The strongest alignment for a free power window-start is when Qld, Vic and NSW all start at 11am, between April and October.
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Fire at Tungatinah Hydro Power Station
Fire has damaged Tungatinah Hydro Power Station in Tasmania, out indefinitely.
A partial answer to the questions ‘where is the Energy/Capacity going to come from’ … after Yallourn closure?
Four weeks ago we asked two questions 'where is the Energy/Capacity going to come from (in just 2 years) to replace all that Energy that Yallourn has been...
AEMC publishes consultation paper on ‘Dispatch limits for inverter-based resources’ Rule Change Proposal
Last Thursday 27th August 2026, the AEMC published a consultation paper with respect to ‘Dispatch limits for inverter-based resources’.
What’s noted in the 2026 ESOO, about the looming closure of Yallourn Power Station?
It’s quite a topical question (that we’ve contributed to recently), so I thought I would have a look at what is noted within the ESOO about the looming...
Did ‘Three Hours Free Power’ produce a ~500MW unforecast jump in ‘Market Demand’ in Victoria on Fri 28th August 2026?
We noted a ~500MW jump in 'Market Demand' in Victoria just after 11:00 on Friday 28th August 2026 that was not forecast in advance. We wonder about 'three...
Only a small frequency drop, with rare full-load trip of Stanwell unit 3
The Stanwell Power Station coal units are some of the best performing coal units in the NEM … which is what made this full-load trip on Thursday 27th...
Curious about the Quorn Park Hybrid station in NSW? I was…
Prompted by a RenewEconomy article, curiosity about the new Quorn Park Hybrid Facility (Solar/BESS) led me to this article.
*Why* the ‘switch-a-roo with the ESOO’?
Yesterday we wrote about ‘The grand ESOO Switch-a-Roo continues in 2026 … but hasn’t that approach jumped the shark?’. Following a tip from a reader (thanks!) this article...
Solar stop test completed in South Australia
On Tuesday 25 August SA Power Networks had planned to conduct its annual test of its ability to temporarily curtail rooftop solar generation.
The boundary effect
NEM demand tragic and occasional WattClarity guest author Allan O'Neil drills into an apparent discrepancy in AEMO's demand calculations following the 1 July 2026 transition of the Basslink...
The grand ESOO Switch-a-Roo continues in 2026 … but hasn’t that approach jumped the shark?
This article is a first look inside the 2026 ESOO. It looks more at how the modelling is framed, and results presented - rather than the details of...
AEMO releases 2026 ESOO on Tuesday 25th August 2026
Breaking a run of a Thursday Release in late August over 3 consecutive preceding years, the AEMO released the 2026 ESOO on Tuesday 25th August 2026. Here's a...
Tamar Valley CCGT online again (from Monday 24th August 2026), after a ~3 day outage
Noting that the Tamar Valley CCGT station switched back online again, from Monday afternoon 24th August 2026.
Tarong unit 3 offline for major outage
For reasons I won’t go into here, we’re taking a particular interest in the major (planned) outage at Tarong unit 3 - with the unit coming offline yesterday...
Our current hypothesis, for the strange-looking modelled results in Monday’s MT PASA data, relating to PEC Stage 2
Earlier this week, we looked at the first round of AEMO modelled MT PASA results for the Project EnergyConnect, and had some questions. After some digging, we think...
Tamar Valley CCGT switched off, on Thursday 20th August 2026
Our ez2view alerts notified me that Tamar Valley CCGT in Tasmania finally came offline on Thursday morning 20th August 2026 (after an operational period of more than 30...
Australia’s East Coast winter gas market softens as volatility rises
Krishan Pal Birda from Rystad takes a look at winter 2026 gas demand in south-eastern Australia, and explores what it might mean for future years.
Whether the weather is windy … but wind farms not as well-yielding as I might have thought?!
Something I'm currently puzzled about, with respect to the trend of peak aggregate production across Wind Farms.
How the CIS differs from state-based underwriting schemes, and what the industry has suggested about it so far
We look at five design differences between the Capacity Investment Scheme and the state auction schemes that came before and alongside it — and the improvements we've heard...