AEMO publishes Draft Report (Security Enablement Procedure – Improving Security Frameworks)
Yesterday (Friday 13th June 2025), the AEMO published both a Draft Report, and Draft Procedures for Security Enablement (as part of the ISF changes in 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.
With some wobbles, Bayswater Unit 4 coming back online – Saturday 14th June 2025
Noting that Bayswater unit 4 had a false (re)start in the early hours of Saturday 14th June 2025.
AEMO (also) forecasts LOR2 for QLD on Monday 16th June 2025
Earlier this morning we noted AEMO forecasting possible LOR2 for QLD on Tuesday 17th June 2025 (in the middle of the day!). Well, at 11:52 on Friday 13th June 2025 they also added a...
AEMO updated forecasts for Tuesday 17th June 2025 show possible LOR2 for Queensland (in the middle of the day!)
On Friday morning 13th June 2025 the AEMO forecasts possible LOR2 in Queensland for Tuesday 17th June 2025 ... in the middle of the day!
Sharp drop in frequency on Friday morning 13th June 2025, with trip at Newport Power Station
I’ve not yet had time to fully investigate, but thought it worth recording the sharp drop in frequency that appears to have occurred shortly after 07:30 NEM time on Friday 13th June 2025.
Brief summary of outcomes (Price, Demand, IRPM and more) for Thursday evening 12th June 2025
Because it proved useful in providing a tabular summary for Wednesday evening 11th June 2025, in this article I've done a similar thing here with respect to Thursday evening 12th June 2025.
Elevated prices on Friday morning 13th June 2025
Worth a short article with this NEMwatch snapshot at 07:50 to mark some price action on Friday morning 13th June 2025.
Callide B2 commences return to service, Friday morning 13th June 2025
Approximately 8 hours after the return to service journey at Loy Yang A1 commenced, a similar journey has been commenced at Callide B2 this morning.
Loy Yang A1 back online, Thursday evening 12th June 2025
The volatility of Thursday evening 12th June 2025 had ended by that time (though not by much), but it’s worth noting that the Loy Yang A1 unit commenced its return to service journey last...
NEM-wide IRPM drops to 10.34% on Thursday evening 12th June 2025
Another quick article about the low IRPM (instantaneous reserve plant margin) on Thursday 12th June 2025.
Low wind yield drops lower, on Thursday evening 12th June 2025
One other snippet of information to share this evening (Thursday 12th June 2025) is about the low NEM-wide wind harvest... lower than earlier forecasts.
A short-lived return to service for Yallourn unit 4
Worth a short note on Thursday 12th June 2025 to highlight the short-lived return to service at YWPS4:
Next blast of volatility–on Thursday evening 12th June 2025
Following yesterday evening's volatility, it's happening again on Thursday evening 12th June 2025.
An initial walk through bidding during the volatility on Wednesday 11th June 2025
We take a first look at bidding across all units (aggregated up) for Wednesday 11th June 2025, with the volatile evening period of particular interest.
Brief summary of outcomes (Price, Demand and IRPM) for Wednesday evening 11th June 2025
We start with this colour-coded tabular record of a 4-hour period (16:00 to 20:00 NEM time on Wednesday 11th June 2025) as a reference point for further analysis of the evening volatility.
Prices up in every region, on Wednesday evening 11th June 2025
A very quick note for Wednesday 11th June 2025 with this snapshot from NEMwatch at 17:00 (NEM time) to record the start of some elevated prices.
AEMO notes increased forecast for Unserved Energy (USE) in QLD due to network outages scheduled between Tue 17th to Fri 20th June 2025
Yesterday (Tuesday 10th June 2025) at 14:21 the AEMO published MN127491 that noted 'The increase in USE in Queensland ... is primarily driven by network outages scheduled between 17 and 20 June 2025'.
Cold winter evening driving NEM-wide demand higher, such as on Tuesday 10th June 2025
A cold winter evening (Tuesday 10th June 2025) is driving electricity demand higher, as captured in this snapshot from NEMwatch at the 18:10 dispatch interval.
Unplanned outage at YWPS3 (tube leak) extended (due to air duct collapse)
Yallourn unit 3 came offline for a tube leak - but ABC reports (on Mon 9th June 2025) that 'an air duct in unit three collapsed during maintenance', so we take an initial look.
Release of Report into Broken Hill blackout in October 2024
On Thursday 5th June 2025, the NSW Government released its 158-page report into ‘The electricity outages affecting Far West NSW in October 2024’.