464MW drop in ‘Market Demand’ in NSW on Sunday 4th May 2025
Flagging this 464MW drop in 'Market Demand' in NSW on Sunday 4th May 2025, as something that might be explored later...
Articles by Paul McArdle
Paul was one of the founders of Global-Roam in February 2000. He is currently the CEO of the company and the principal author of WattClarity. Writing for WattClarity has become a natural extension of his work in understanding the electricity market, enabling him to lead the team in developing better software for clients.
Before co-founding the company, Paul worked as a Mechanical Engineer for the Queensland Electricity Commission in the early 1990s. He also gained international experience in Japan, the United States, Canada, the UK, and Argentina as part of his ES Cornwall Memorial Scholarship.
AEMC underway with review of the Centralised Negawatt Dispatch Mechanism (a.k.a. the WDRM), and consultation closed
Submissions at the AEMC already closed over a week ago, with respect to their review of WDRM. Here's some starting thoughts ...
Playing ‘Blackout Buzzword Bingo’ with recent events
In the Social Media commentary (and even full media articles) following the recent Blackout it feels a bit (frustrating and) like playing 'Blackout Buzzword Bingo' in trying to understand what actually happened...
Blackout in Bali on 2nd May 2025
With much attention in the past week being focused on the major blackout on the Iberian Peninsula in Europe, it’s worth noting there was a blackout in Bali on Friday 2nd May 2025
Gremlins in the EMMS upgrade to Data Model v5.5, making ‘the Resurrection of Old Coal’ appear on the cards
On Tuesday 29th April 2024 we noted a glitch in some ez2view widgets stemming from changes in the EMMS triggered by the upgrade process for Data Model v5.5.
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.
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 2025.
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 of interest.
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 to accept cash as credit support.
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 present on Tuesday 15th April 2025.
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.