Major power outage on the Iberian Peninsula on Monday 28th April 2025
On Monday 28th April 2025 there was a large loss of load event encompassing millions of customers across Portugal and Spain. Here's some initial notes.
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Do we have enough gas to wait until nuclear comes along?
Tristan Edis of Green Energy Markets discusses the practicalities of the gap that must be filled by the gas sector under the nuclear power timeline proposed by the...
Reliability Panel comments on AEMO’s Transition Plan for System Security on 23rd April 2025
The Reliability Panel responded to the AEMO’s first iteration of the annual Transition Plan for System Security (TPSS) with comments with this 4-page letter on Wednesday 23rd April...
Games that self-forecasters can* play (Part 1 – An Overview)
I've promised to write this article for some time, but a few recent events (and looming start of FPP) have caused me to publish this now.
A quick walk through a few volatile evening periods
In this article we take an initial look at bidding across some instances of price volatility from Monday 7th April 2025 to Friday 11th April 2025.
AEMO publishes draft ‘Congestion Information Resource Guidelines’ – submissions due 19th May 2025
On Tuesday 15th April 2025, the AEMO published its draft report on 'Congestion Information Resource Guidelines', seeking feedback by Monday 19th May 2025.
AEMO published its HLIA for the ISF Implementation … and seeking input on draft ‘Security Enablement Procedures’
As the next steps in implementing the AEMC's ISF Reforms, the AEMO has published: (a) on 7th April a consultation; and (b) on 17th April a HLIA.
AEMO commenced a consultation on the Constraint Formulation Guidelines
On Monday 7th April, the AEMO commenced a consultation on the Constraint Formulation Guidelines - which touches on three different changes that some of our readers will find...
Drop in NEM Mainland Frequency appearing to coincide with trips at New England Solar Farm, on Saturday 19th April 2025
We take a quick look, after AEMO noted that at 13:51 (NEM time) the New England Solar Farm No.1 and No.2 both tripped.
AEMC draft determination, about ‘Allowing AEMO to accept cash as credit support’
A little over 2 weeks ago (on Thu 3rd April 2025) the AEMC made a draft determination on the rule change proposal by Delta Electricity to allow AEMO...
AER suspends the MIC component of STIPS following review
On Thursday 17th April 2025, the AER published its Final Decision on the Service Target Performance Incentive Scheme (STIPS) for transmission companies.
Three units at Bayswater (temporarily) offline, on Tuesday 15th April 2025
It’s not the first time that it’s happened in the history of the NEM, but worth noting that we're (temporarily) down to 1 x Bayswater unit online at...
Mainland system frequency in the afternoon of April 10, 2025
At 16:01 on April 10, 2025, a system frequency dip was observed from the Global-Roam frequency logger.
Prices in QLD and NSW rise into the four digit mark on Thursday 10th April 2025
Elevated prices struck QLD and NSW for the fourth night in a row - with spot prices climbing above the $1,000MWh mark briefly this afternoon.
Mainland system frequency on April 10, 2025, associated with VIC transmission outage
High speed frequency measurements provide a deeper understanding of how the system responded to the unplanned 500kV line outage.
A boost in transfer capacity with PEC Stage 1
Worth capturing MN126466 published at 11:12 today with respect to PEC Stage 1.
AEMO Market Notice 126465 notes transmission link back in service
Third article about the large drop in demand in Victoria observed on Thursday morning 10th April 2025.
Another long forced outage at Callide C3 … April 2025
First article about the latest long forced outage for Callide C3 - beginning April 2025.
AEMO Market Notice 126464 confirms trip transmission (linked to the APD smelter)
Second article about the large drop in demand in Victoria observed on Thursday morning 10th April 2025.
582MW (instantaneous?) drop in ‘Market Demand’ in Victoria delivers large System Frequency spike – Thursday 10th April 2025
Noting a large 582MW drop in ‘Market Demand’ in Victoria this morning (Thu 10th April 2025) – as captured in this ‘Notification’ alert in ez2view at 08:31 (NEM...