AEMO updates forecast LOR2 for NSW for Monday 25th November 2024
At 04:05 on Tue 19th November 2024 the AEMO published MN120652 noting a forecast LOR2 condition for NSW for Monday 25th November 2024.
Articles by Paul McArdle
Paul was one of the founders of Global-Roam in February 2000. He is currently the CEO of the company and the principal author of WattClarity. Writing for WattClarity has become a natural extension of his work in understanding the electricity market, enabling him to lead the team in developing better software for clients.
Before co-founding the company, Paul worked as a Mechanical Engineer for the Queensland Electricity Commission in the early 1990s. He also gained international experience in Japan, the United States, Canada, the UK, and Argentina as part of his ES Cornwall Memorial Scholarship.
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.
A 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.
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.
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.
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.
A much shorter run of evening volatility in QLD and NSW on Friday 8th November 2024
There were not as many SMS pings on Friday 8th November 2024 as there were for price alerts the day before, with the only 4 dispatch intervals in QLD and NSW above $1,000/MWh.
A view of the extracted Mainland Frequency trace on Thursday afternoon 7th November 2024 (Part 2)
Yesterday, amongst the volatility, we also wrote about a ‘Small (NEM Mainland) frequency wobble, on Thursday afternoon 7th November 2024’. As a stepping stone to further analysis, we extracted data from around that time and present the two charts.
Three dispatch intervals (sampled from a long run of volatility on Thursday 7th November 2024) to illustrate the complexity (and significance) of congestion
We’ve selected three dispatch intervals through the long run of volatility in the QLD and NSW regions on Thursday 7th November 2024 to help illustrate:
1) How the issue of ‘congestion’ or ‘constraints’ in the NEM is so complex;
2) But also why it’s so significant to price and dispatch outcomes.