Review of the System Restart Standard 2025 – Technical advice provided
As the technologies underpinning the power system change, so too must the approach to supporting system restart.
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AEMO releases the 2025 Enhanced Locational Information (ELI) report on Wednesday 9th July 2025
A short post to note that the AEMO has released its 2025 ELI, the second such edition of this annual report.
A look at forecasts for SA this Wednesday evening 9th July 2025, where forecast LOR2 conditions are appearing
A quick look at demand, wind and solar forecasts, along with the constraint invocation schedule in SA for this coming Wednesday, where the AEMO currently have an extended forecast LOR2 condition projected.
Not all renewable projects are created equal: Why approval times vary dramatically across Australia
Alice Matthews examines how approval times for renewables vary widely by state and technology — with NSW wind projects facing the longest delays.
Volatile price period runs over 5 hours on 2 July 2025 in SA
If we had been in the previous financial year, the old CPT of $1,573,700 would have been tripped.
Evening spot prices less volatile than anticipated in SA on July 2, 2025
Spot price volatility occurs in SA on 2 July 2025, yet not to the level that risks exceeding the cumulative price threshold.
More than 40,000 customers without power in NSW on Wednesday 2nd July 2025 after wild weather overnight
Wild storms over night have impacted parts of the Ausgrid, Endeavour and Essential Energy distribution networks in NSW.
Keep an eye on the SA Cumulative Price this evening on Wednesday 2nd July 2025
After an extended burst of high prices last night, and a short burst this morning, the cumulative price in SA has moved closer to CPT territory.
NSW records highest winter demand in fifteen years, whilst high prices eventuate in SA on Tuesday evening 1st July 2025
Cold winter conditions in NSW have pushed market demand in the region above 13GW this evening. Meanwhile, high prices have stuck around in SA.
Directions Paper adjusts approach to loop IRSR
Under the new direction proposed, netting off would be applied to allocate IRSR. The proposal is open for feedback until 10 July 2025.
Guest Authored Posts
Not all renewable projects are created equal: Why approval times vary dramatically across Australia
Alice Matthews examines how approval times for renewables vary widely by state and technology — with NSW wind projects facing the longest delays.
Triple C conditions (cold, calm and cloudy) across the NEM last Thursday evening 26th June 2025
Carl Daley examines the underlying conditions and outcomes that occurred last Thursday evening, the 26th of June.
Detailed Analysis
ENTSO-E is also investigating the 28 April 2025 blackout on the Iberian Peninsula
For those interested in ‘what happened, why and what should be done about it’ with respect to the 28th April 2025 blackout on the Iberian Peninsula, ENTSO-E is also investigating.
Red Electrica report on the “Blackout in Spanish Peninsula Electrical System on 28th of April 2025”
On Wednesday 18th June 2025 Red Eléctrica (REE) published on the “Blackout in Spanish Peninsula Electrical System on 28th of April 2025” .
The Non-Confidential Report (182 pages) into the Iberian blackout
Earlier today we wrote about the ‘News Release on the blackout on the Iberian Peninsula...’. Here's the report (which we could not find at the time).
North-south switcheroo as solar conditions swing opposite directions over Autumn 2025
Rainfall and cloud cover has split Australia this autumn, delivering a mixed bag of solar irradiance conditions for solar farms across the NEM.
Examples of self-forecasting behaviours – part 5 – afternoon underestimations
A sequence of afternoon intervals stand out because the forecast appeared to be biased low – self-forecasts suddenly dropped roughly 30-40 percentage points and then increased a short time later.
Examples of self-forecasting behaviours – part 4 – avoiding SDC periods
Theoretically, if a self-forecasting system never offers forecasts for more than 60% of intervals it may perpetually skip the performance assessment and the system could continue for use unsuppressed.
Examples of self-forecasting behaviours – part 3 – lunar megawatts
In another style of biasing a self-forecast, "lunar megawatts" represent an expectation of solar farm generation at night when it really should be zero.
Examples of self-forecasting behaviours – part 2 – relative accuracy
The forecast differences would contribute to improved lower RMSE and MAE scores, relative to AWEFS_ASEFS, in the weekly performance assessment.