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).
Market Operations
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 closer look at LOR projections in South Australia next Monday 30th June 2025
A quick look into those LOR forecasts for South Australia next Monday, including a view of forecasts for market demand, wind and solar conditions, and generator outages.
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.
The frequency of coal generation events in 2025
A count of coal generator events indicates large unit trips are less frequent.
‘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.
Frequency wobbles on Tuesday 17th June 2025
A quick look at two particular instances of (relatively small) frequency disruption on Tuesday 17th June 2025.
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.