Cumulative ‘worm line’ view of NEMwide wind production in 2025 Q2 (to Sunday 8th June 2025)
Winter 2025 has arrived, with a cold front driving high wind production - which prompts this initial look in wind production for 2025 Q2 to date.
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.
Large Energy Users feeling the strain (such as at Tomago)
A short article tying together two independent events - both related to Energy Intensive Energy Users
Slides circulated, from the Nelson Review briefings during May 2025
Given the instructions were ‘Feel free to share it more widely with your colleagues and networks’, here's the slide deck from the Nelson Review presentations through May 2025.
A 495MW drop in ‘Market Demand’ in NSW on Thursday morning 5th June 2025
Another short article to note a 495MW drop in demand in NSW (measured in 'Market Demand') to the 10:10 dispatch interval on Thursday 5th June 2025.
A long-run trend of monthly average Contingency FCAS prices in NSW
Another short article with this trend from the ez2view ‘Trends Editor’ to summarise the overall trend of (monthly average) prices in the 8 x Contingency FCAS markets focused on the NSW region.
Across 188 Semi-Scheduled DUIDs – Dispatch Error at 16:15 on Monday 26th May 2025
This is my second article today relating to events on Monday 26th May 2025 - with this article looking at Dispatch Error for each of the 188 x Semi-Scheduled units to 16:15.
Noting the dust storm on Monday 26th May 2025 – and impact on electricity supply-demand
Belatedly noting the dust storm that past through South Australia on Monday 26th May 2025, which Andrew Miskelly of Weatherzone documented in a video on Bsky.
Evening price volatility in NSW on Sunday 1st June 2025
A short note with a NEMwatch snapshot at 17:15 to mark some low-level price action in NSW on Sunday 1st June 2025
Callide C back online, Sunday 1st June 2025
A short article to note that Callide C3 came back online in the early hours of Sunday morning 1st June 2025.
A trend of aggregate ‘Dispatch Error’ for each Semi-Scheduled fuel type on Monday 26th May 2025
Let’s now return to Monday 26th May 2025 to look at aggregate ‘Dispatch Error’ across both Semi-Scheduled fuel types for all dispatch intervals in the day.
A quick look at system frequency, with 2 x coal units offline overnight into Saturday 31st May 2025
It’s fitting to book-end the week with a look at frequency performance overnight (into Saturday 31st May 2025) with two coal unit outages in NSW overnight to see what happened in terms of more...
Two slides we might refer back to later, from the Nelson Review presentation (Thu 29th May 2025 in Brisbane)
As noted in yesterday evening’s article (about one big ‘wrinkle’), I was off to the Brisbane session of the Nelson Review today. Here's two slides that jumped out.
Evening volatility on Thursday 29th May 2025
A very short note with a snapshot of NEMwatch at 17:35 NEM time to mark the first dispatch interval this evening with a spot price above $1,000/MWh.
Poor dispatch performance of VRE (collectively) on Monday 26th May 2025 sufficiently large to drive frequency outside of NOFB
Prior to the Brisbane session of the Nelson Review Panel (on Thu 29th May 2025) we take a look at Dispatch Error in the 16:15 dispatch interval on Monday 26th May 2025 to see...
Was Monday evening’s new record wind production well forecast in advance?
Taking a closer look at the new 'highest ever' point for NEM-wide Wind Production on Monday 26th May 2025, and how well this was forecast in advance.
New all-time record for NEMwide production from Wind on Monday 26th May 2025
Looking back at Monday evening 26th May 2025, there was indeed a new all-time wind production record (which smashed the earlier record set almost exactly a year earlier).
Two large drops in ‘Market Demand’ in South Australia on Monday afternoon 26th May 2025
Worth a short note to tag in this ‘Notification’ widget alert in ez2view triggered at 13:31 (NEM time) on Monday 26th May 2025 about a 235MW drop in ‘Market Demand’ in South Australia.
*Might* be a new all-time record for NEMwide wind production on Monday night 26th May 2025
An updated view (at Monday morning 26th May 2025) at updated forecasts for NEM-wide wind capability for this evening.
Forecast for high wind capability across the NEM on Monday 26th May 2025
A glance at an ez2view dashboard shows AEMO forecasts for wind capability next Monday 26th May 2025 will be quite high.
Buronga No.5 330kV synchronous condenser has been commissioned in NSW
AEMO notes that 'At 1700 hrs 20/05/2025, the Buronga No.5 330kV synchronous condenser has been commissioned.'