Frequency wobbles on Tuesday 17th June 2025
A quick look at two particular instances of (relatively small) frequency disruption on Tuesday 17th June 2025.
Market Operations
Which units show large positive Dispatch Error for 15:40 on Monday 16th June 2025
Following on from Linton's article (about the frequency drop at 15:40 on Monday 16th June 2025) we take a look at the largest harmful Dispatch Errors across the full fleet of units ... and...
Drop in mainland frequency on 16 June 2025
In reviewing system frequency on the 16th of June, 2025, we observed a drop that reached below the NOFB.
Three units at Yallourn Power Station offline on Monday morning 16th June 2025
Taking a look at the three of the Yallourn Units offline on Monday morning 16th June 2025.
Trading Places … BW01 offline, with BW04 online
With BW04 returned to service on Sat 14th June 2025, worth noting that sibling unit BW01 came offline on Sunday afternoon 15th June 2025.
What’s all this, then, about Gas-Powered Generation in Victoria in the past week
Over the past week (and particularly Wednesday 11th June 2025 and Thursday 12th June 2025) gas-power generation ran strongly in Victoria. So we take a quick look at the historical context.
AEMO ‘Industry Go Live Plan’ for ERI and ST PASA Recall Period
Belatedly noting the AEMO's publication of the Industry Go Live Plan for the ERI and ST PASA changes.
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 review of demand response on Wednesday 11 June 2025
Wednesday evening 11th June 2025 was a period of tight supply-demand balance, hence energy price volatility – and so this article reviews the response of the demand-side.