How low did it go? NEM-wide wind production in recent days
We've already noted the ‘New all-time record for NEM-wide wind, on Monday 23rd June 2025’. But how low did wind production drop, on Thursday 26th June 2025?
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.
Next steps in two big market changes (in terms of transparency)
Worth a short note today (Friday 27th June 2025) to note the publication of MN127877 – which references two market changes that will improve market transparency for all types of participants
Past 3 hours of continuous volatility on Thursday evening 26th June 2025
Considering that it was 16:45 (NEM time) when volatility started it’s notable that we’re into our 4th hour of volatility now on Thursday evening 26th June 2025.
Evening volatility ongoing (Thursday 26th June 2025), with NEM-wide ‘Market Demand’ above 31,000MW
A further update on the volatility and high demand seen on Thursday evening 26th June 2025.
Run of evening volatility starts early, on Thursday 26th June 2025
Here’s a NEMwatch snapshot at 16:50 (NEM time) on Thursday 26th June 2025 with the run of volatility in the southern regions already well underway.
Cold weather drives electricity ‘Market Demand’ higher (and higher than AEMO’s earlier forecasts)
I thought it would be worth adding a couple snapshots from the ‘Forecast Convergence’ widget in ez2view looking at ‘Market Demand’ as at various dispatch intervals on Thursday 26th June 2025 looking backwards ~7...
Morning volatility in the southern regions – Thursday 26th June 2025
Here’s a snapshot from NEMwatch at 07:25 to record some morning volatility on Thursday 26th June 2025
Opaque Congestion and Hidden Curtailment … such as on Tue 24th June 2024 with the ‘N-DPWG_63_X5’ constraint set invoked
It was now just over 5 years ago when Marcelle wrote ‘Not as simple as it appears – estimating curtailment of renewable generation’. This week's invocation of the 'N-DPWG_63_X5' constraint set provides a great...
Loy Yang A2 apparent trip from 443MW on Wednesday 25th June 2025
A very short midday article on Wednesday 25th June 2025 noting this apparent trip of LYA2 unit from 443MW just prior to 11:31 (NEM time).
ENTSO-E is also investigating the 28 April 2025 blackout on the Iberian Peninsula
For those interested in ‘what happened, why and what should be done about it’ with respect to the 28th April 2025 blackout on the Iberian Peninsula, ENTSO-E is also investigating.
Unplanned outage of Darlington Point – Wagga No.63 330 kV line
At 17:44 yesterday (Monday 23rd June 2025) the AEMO issued MN127743 noting an unplanned outage of Darlington Point - Wagga No.63 330 kV line (leading to the ‘N-DPWG_63_X5’ constraint set being invoked)
A 409MW drop in ‘Market Demand’ in Victoria on Tuesday 24th June 2025
Another short article about a large change in demand – this one being a 409MW drop in ‘Market Demand’ to the 12:10 dispatch interval (NEM time) on Tuesday 24th June 2025.
Forecast LOR3 for South Australia for Monday 30th June 2025
Beginning Monday evening 23rd June 2025, the AEMO has forecast extremely tight supply-demand balance in South Australia (including possible load shedding) for Monday 30th June 2025.
New all-time record for NEM-wide wind, on Monday 23rd June 2025
We see a new record for NEM-wide wind production was set at 22:35 (NEM time) on Monday evening 23rd June 2025, with aggregate FinalMW reaching 9,491MW.
Red Electrica report on the “Blackout in Spanish Peninsula Electrical System on 28th of April 2025”
On Wednesday 18th June 2025 Red Eléctrica (REE) published on the “Blackout in Spanish Peninsula Electrical System on 28th of April 2025” .
‘June 12 was one of the most challenging days of the last 4 years’
It was with interest that one of our team members noted David Osmond’s comment earlier today when he said 'June 12 was one of the most challenging days of the last 4 years ...'
A dose of evening volatility across the mainland, on Wednesday 18th June 2025
Here’s a snapshot from NEMwatch at 17:35 on Wednesday 18th June 2025 as food for further discussions at 'Energy Week' in Melbourne tomorrow.
The Non-Confidential Report (182 pages) into the Iberian blackout
Earlier today we wrote about the ‘News Release on the blackout on the Iberian Peninsula...’. Here's the report (which we could not find at the time).
News Release on the blackout on the Iberian Peninsula (on 28th April 2025) suggests overvoltage was the cause
On Tue 17th June 2025 (local time) a news release has been made to suggest a report into the April 2025 power outage on Iberian Peninsula has been released.
Frequency wobbles on Tuesday 17th June 2025
A quick look at two particular instances of (relatively small) frequency disruption on Tuesday 17th June 2025.