AEMO notes ‘Pre dispatch demand forecast error’ on Wed 22nd Jan 2025 … second day in a row
For the second day in a row, on Wed 22nd Jan 2025 AEMO has notified about an error in the predispatch demand forecast process.
Eventful days in 2025
A catalogue of articles pertaining to eventful days in 2025
Ramping constraints in South Australia, with outage on Robertstown – Tungkillo 275 kV line 1 or 2
A short article as a record of ramping constraints bound with reference to network outages in South Australia (and Queensland) on Wednesday morning 22nd January 2025.
Operational snags at Bayswater unit 2
We’d seen Bayswater unit 2 come offline this morning, and wondered if we’d not seen the unit bouncing ON-OFF a few times recently.
Bundey to Buronga (6F) line to be energised 0700 21st January 2025
AEMO noted (in MN123507) that ‘The Bundey to Buronga 330kV (6F) line will be energised at 0700 hrs 21st January 2025.’
Forecast ‘Market Demand’ for QLD on Friday 24th Jan 2025 approaching all-time maximum
AEMO STPASA forecasts for QLD ‘Market Demand’ on Thursday 24th January 2025 is that it might be a new all-time record. Earlier STPASA forecasts suggested it would be above the (prior) all-time record from a year ago.
Further on the N_NEWENSF1+2_100-INV constraint around the 14:00 dispatch interval on Wednesday 15th January 2025 … Part 8
We understand how the solar farm units received targets of 0 MW, when the constraint appears to simply limit the inverter count to 100.
Ausgrid report that 140,000 customers in NSW were impacted or lost power last night Jan 15th 2025 .. Part 7
Ausgrid have published a statement this morning that 140,000 customers and 50,000 homes and business either lost power or had their electricity impacted during yesterday’s thunderstorms in NSW.
Further detail for the 14:00 dispatch interval on Wednesday 15th January 2025 … Part 6
Last article for the day is Part 6 exploring the volatility at 14:00 on Wednesday 15th January 2025 … flagging some other things not noted before.
Drop in NEM Mainland Frequency (around 14:00) on Wednesday 15th January 2025 … Part 5
In Part 5 in this evolving series, we find a significant drop in mainland frequency at ~14:00 on Wednesday 15th January 2025 – coincident with the weather disruption and price volatility.
About the ‘N_NEWENSF1+2_100-INV’ constraint equation that violates at 14:00 on Wednesday 15th January 2025 – Part 4
Taking a look at the ‘N_NEWENSF1+2_100-INV’ constraint equation, one other factor in the volatility in NSW on Wednesday afternoon 15th January 2025.
Weather a factor on Wednesday 15th January 2025? … Part 3
Could a large storm passing over NSW and Victoria have played a part in transmission outages, leading to price volatility?
About the unplanned outage of Lower Tumut – Yass 330 kV 03 Line on Wednesday 15th January 2025 … Part 2
Second sequential part of a broader review of some earlier-than-expected volatility in NSW on Wednesday afternoon 15th January 2025.
Early afternoon volatility in NSW, on Wednesday 15th January 2025 … Part 1 in a multi-part exploration
Not long after speaking with a client about forecast evening volatility in NSW for Wednesday 15th January 2025, we see price spikes beginning at 14:00 in the afternoon. So we take a first look….
About the short-notice ‘Actual LOR2’ condition for NSW on Monday 13th January 2025 … Part 3 of a Case Study.
On Monday evening 13th January we noted a short-notice ‘Actual LOR2’ in NSW. In this article we take a look at why (the short notice) was unusual.
The ‘N::N_MNYS_2’ constraint equation and the ‘Actual LOR2’ in NSW on Monday 13th January 2024 … Part 2 of a Case Study.
On Monday evening 13th January we noted a short-notice ‘Actual LOR2’ in NSW. In this article we take a look at the VIC1-NSW1 interconnector, and particularly the impact of the ‘N::N_MNYS_2’ constraint equation, in limiting the ability of imports from the south to ameliorate.
(Almost completely) out of the blue, an Actual LOR2 … in NSW on Monday 13th January 2025
At 17:49 (NEM time) on Monday 13th January 2025 the AEMO declared an ‘Actual LOR2’ … pretty much ‘out of the blue’.
Out of cycle MTPASA update identifies low reserves in VIC
ez2view widgets support quick understanding of the latest declaration of low reserve conditions for VIC in 2025.
Forecasts moderate, for NSW on Monday 6th January 2025
Worth a short follow-on to say that the AEMO published MN122902 at 14:32 (NEM time) today noting the cancellation of the forecast LOR1 condition for NSW, as forecasts moderate.
AEMO notes hot weather forecast for SA and VIC from 3rd January to 5th January 2025
The AEMO published ‘NEM Local Temperature Alert’ in MN122792 published at 11:12 (NEM time) on Friday 3rd January 2025.
AEMO publishes forecast LOR2 for NSW for Monday afternoon/evening 6th January 2025
Following AEMO’s MN122697 (published at 06:51 NEM time), we take a look at the ‘forecast LOR2’ condition for NSW on Monday 6th January 2025.