NEMDE nightmares – parallel pathways and clashing constraints
Prompted by a question by a client in a training session for a new ez2view user, guest author Allan O'Neil has written 2,940 words to explain the price...
Articles by Allan O'Neil
Some remarks on Victorian demand
Allan O'Neil takes a closer look at Victorian electricity demand on Sunday, February 2nd — which stood out as an unprecedented anomaly when looking at the history of...
PEC Stage 1 in operation – be careful what you wish for
Guest author Allan O'Neil looks at how operation of Project EnergyConnect Stage 1 may affect market outcomes, with some early indications that impacts won't be as straightforward as...
Northern NEM capacity outlook next week – a series of unfortunate events
A very quick post to look at one of the several reasons we are seeing LOR3 and LOR2 forecasts for NSW and Queensland respectively next Wednesday (27 November)....
Watt scarcity?
Guest author Allan O'Neil examines some recent episodes of price volatility (particularly 30th July to 5th August 2024) and whether they were driven by a shortage of supply,...
With the benefit of hindsight – or who’d be an auto-bidder?
Following on from earlier articles about price volatility on Tue 30th July 2024 (particularly in South Australia), guest author Allan O'Neil takes a closer look at the operation...
Missing megawatts and phantom generation
Seven days ago, AEMO notified the market of a Scheduling Error from 24th Jan 2024 to 7th March 2024. A client asked us what it meant - so...
Victorian renewable generation on 13 February 2024: One picture and a thousand (sorry, many more) words
Guest author, Allan O'Neil, takes us several steps further in understanding the events in Victoria on Tuesday 13th February 2024 - especially with respect to VRE (wind and...
Early observations from examining the AEMO’s four-second SCADA data from Tuesday afternoon
Allan O'Neil provides a couple of initial observations regarding Dundonnell Wind Farm and Loy Yang A from his first glance of at the 4-second SCADA data from the...
Victorian power system event 13 Feb 2024 13:08 – a few quick notes
Guest author, Allan O'Neil, adds some insights in a rapidly evolving situation on Tuesday afternoon 13th February 2024 in Victoria.
Summer 2023-24 demand – high or low?
Inspired (or provoked) by Paul's earlier article noting 'NEM-wide demand has been quite low through summer 2023-24 (at least to date)', guest author Allan O'Neil takes a look...
Out with a bang or a whimper? And a puzzle or two.
Guest author Allan O'Neil continues our series of posts on very low system demand levels in South Australia and Victoria on New Year's Eve, with a few unresolved...
What’s happening around Wagga?
Guest author, Allan O'Neil, takes a detailed look at how VIC1-NSW1 transfer capability has been limited frequently due to constraints related to the 051 line in southern NSW,...
An ESOO snippet – how effective are different technologies at enhancing reliability?
In his second article about the 2023 ESOO, guest author Allan O'Neil takes a look at what the AEMO has published with respect to various options for firming...
Stock up on candles?
Last Thursday (31st Aug 2023) the AEMO published the ESOO 2023, including forecasts of some possibility of unserved energy in Victoria and South Australia this coming summer 2023-24...
Too Early to Say?
Guest author, Allan O'Neil, publishes some analysis for WattClarity on price and generation mix changes apparent in the NEM coincident with (but not wholly caused by) the closure...
Renewable curtailment – forced and not quite so forced
Inspired by the recent article by Tristan Edis (who referenced the GSD2022 in analysis of curtailment of some wind and solar farms), Allan O'Neil follows on with more...
Liddell’s ghost stalks the market
During early morning Monday 1st May prices spiked in the NSW quite unexpectedly. Guest author Allan O'Neil takes us into the complexities of the EMMS and NEMDE to...
Bye X5, Hi X5
From 16th March 2023 the infamous 'x5 constraint' has been split into two. We quickly showed previously that the design of the Left Hand Side (LHS) does not...
Has adding wind and solar upped the need for FCAS in the NEM?
Allan O'Neil digs through historic FCAS enablement and utilisation levels to examine whether there is an increasing trend in recent years.