Evening volatility in QLD and NSW on Monday 18th November 2024
A short record of some evening volatility in QLD and NSW on Monday evening 18th November 2024 … with the ‘N-MNYS_5_WG_CLOSE’ constraint set a familiar factor.
Read MoreA question about (currently) planned outages for Eraring Power Station through until (currently planned closure) in August 2027
It’s roughly 6 months since the decision was made to extend the life of Eraring Power Station. I’ve had a question for a while, but have only had time to look now – what does that mean, in terms of planned outages to 2027?
Burst of volatility in QLD and NSW, on Friday evening 15th November 2024
A very quick record of evening volatility in QLD and NSW on Friday 15th November 2024.
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.
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 ez2view has alerted us that Loy Yang A2 unit has also come offline shortly afterwards (just prior to 09:30 NEM time).
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 to 10:30 NEM time on Wednesday 13th November 2024.
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.
*later* drops in NEM Mainland Frequency on Tuesday 12th November 2024
We’ve already looked at how there was a drop in system frequency at ~10:41 NEM time (outside of the NOFB) in conjunction with trips of units at Yallourn Power Station. Well, believe it or not there was a couple drops – not as big – later in the day.
VIC Inertia drops low, but combined VIC+SA level stays clear
Inertia levels, measured in megawatt-seconds (MWs), dropped towards the targeted secure operating level and the minimum threshold level on 12 November, 2024.
Data Intensity of operating in the NEM, and implications for algorithmic bidding
Philippe Orhan from Neoen shares this article which is adapted from his presentation about BESS bidding (and dealing with the complexity in the data) in the NEM at the recent All-Energy conference in Melbourne.
A closer (though still cursory) look at NEM Mainland Frequency in a data extract on Tuesday 12th November 2024
A second quick look at the drop in NEM Mainland Frequency on Tuesday 12th November 2024.
NEM Mainland Frequency drops below the NOFB, on Tuesday 12th November 2024
A quick article recording the drop of NEM Mainland Frequency below the lower bound of the NOFB on Tuesday morning 12th November 2024.
Evening volatility in QLD and NSW (and low IRPM) on Monday evening 11th November 2024
Monday evening 11th November 2024 sees volatility return in QLD initially, and soon also in NSW.
Reviewing the ‘N-MNYS_5_WG_CLOSE’ Constraint Set, as a major factor in recent northern volatility
As time permits, we’re chipping away at an exploration of the volatility in QLD and NSW on Thursday 7th November 2024. In this article we take another step in understanding the ‘N-MNYS_5_WG_CLOSE ’ constraint set.