NEM Mainland frequency patterns – historical overview from 2024
In this overview, we take a longitudinal look back at how frequency has changed over the years.
All Posts
With YWPS1 and LYA2 back online, Victorian directions for System Strength cancelled
On Friday morning 15th November 2024 we see the return to service of both YWPS1 and LYA2 - coincident with the cancellation of Victorian directions for System Strength.
Snippets from AEMO’s summer readiness briefing for 2024-25
A sample of highlights captured from AEMO's summer readiness briefing for 2024-25.
Why the directions (to 4 units) with 6 coal-fired units still online in Victoria?
We (and others) wondered, why the direction (especially for 4 units) to replace the System Strength from the ‘missing’ coal units?
Loy Yang A2 joins three other coal units in VIC offline
We’ve only just published ‘AEMO directs 4 units on in Victoria, to cover System Strength shortfall’ … noting that, at that time, there were 3 coal units in Victoria offline. Our ‘Notifications’ widget in...
AEMO directs 4 units on in Victoria, to cover System Strength shortfall
On Thursday morning 14th November 2024, the AEMO has directed 4 different units to operate, to cover a potential system strength shortfall in the Victorian region.
Today’s significant ‘Market Demand’ drop in NSW (and a smaller one in QLD) not forecast in advance
We earlier noted this ‘Significant (-786MW) drop in NSW demand, on Wednesday 13th November 2024’ … and, in response, a reader (KC) asked a question that inspired this article.
Drop in mainland frequency on Wednesday afternoon 13th November 2024
A short article on Wednesday afternoon, 13th November 2024 with this snapshot highlighting a drop in frequency on the mainland.
Significant (-786MW) drop in NSW demand, on Wednesday 13th November 2024
The ‘Notifications’ widget in one of our copies of ez2view triggered an alert that we’ve not seen all that often at all, flagging a 786MW drop in ‘Market Demand’ in the period from 10:25...
A quick look at Yallourn unit operations, on Tuesday 12th November 2024
Partly prompted by a comment yesterday from a WattClarity reader (Liam), and powered by 'next day public' data, we take a look at Yallourn Power Station on Tuesday 12th November 2024.
Guest Authored Posts
Bidding algorithms: Don’t miss the forest for the trees
Declan Kelly from Flow Power follows up an earlier article discussing the impacts of algorithmic bidding, this time looking at some of the market benefits.
How the NEM BESS fleet is operating on peak days, and how to be a savvy operator
In this guest article, Matt Grover from Fluence draws on operational data and real-world trading experience to unpack how Australia’s grid-scale batteries performed across three June 2025 peak days — and what capabilities belong...
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