When the NEM’s Largest Generating Unit Trips …
A follow-on to my earlier article of a couple weeks ago, looking at another instance where a team effort was required to counter a drop in system frequency following the loss of generation at...
Articles by Allan O'Neil
FCAS in Action – What Happens When a Generator Trips? (or Never let the data get in the way of a good story)
Understanding the FCAS response by all generators when a unit trips in the NEM. A detailed look at the Loy Yang A unit trip in December 2017 and the contribution of the Hornsdale Power...
Some perspectives on events last Thursday and Friday
Some observations about the events across Victoria and South Australia of Thursday 18th and Friday 19th January 2018.
What’s the market data saying about this Summer?
Guest author, Allan O'Neil, follows up a post in September (reviewing what the AEMO's ESOO was saying about summer 2017-18) with this review of updated data
No Guarantee of Success
Our guest author, Allan O'Neil, poses a number of questions about the recently proposed "National Energy Guarantee" (NEG)
Decoding AEMO’s latest ESOO–will the lights stay on this summer?
Some initial analysis by our guest author, Allan O'Neil, about what AEMO's Statement of Opportunities 2017 is saying in terms of this coming summer 2017-18
What does “Unserved Energy” actually mean – a brief explainer
A brief explainer of what "Unserved Energy" (or USE) actually means, in the context of the AEMO "Electricity Statement of Opportunities 2017" (ESOO) released this week.
Cost Confusion
Our guest author, Allan O'Neil, posts an overview of the strengths and weaknesses of an increasingly popular metric - the LCOE (or Levellised Cost of Energy)
More about wind output and AEMO’s intervention in South Australia 25-26 April
A closer look at AEMO’s actions during a period of high windfarm output in SA last week
A sudden series of SA spikes
Tight import limits on the Heywood interconnector and a lull in wind output saw price volatility return to South Australia earlier this week
Was South Australia lucky the lights stayed on last Friday?
Last Friday’s events took South Australia much closer to the brink of another Black System event than many seem to have realised
Key Events Timeline – NSW Friday 10 Feb 2017
A summary timeline of how last Friday’s “white knuckle ride” in NSW evolved, highlighting key events on the day.
Examining why Pelican Point didn’t bid full capacity into the NEM on Wednesday 8 February
Some thoughts by our guest author, about possible reasons why Engie did not bid full output of Pelican Point power station into AEMO on Wednesday 8th February (i.e. the time at which load shedding...
Initial Analysis: SA Load Shedding Wed 8 Feb 2017
A look at the supply/demand fundamentals in South Australia and explaining why load shedding was initiated.
Southern NEM demand awakes from slumber
Hot weather in Adelaide and Melbourne driving an interesting outlook for Thursday
Overview: NSW & Qld Price Volatility, Monday 6 Feb 2017
Very high demands in NSW and “more of the same” in Queensland saw significant price volatility yesterday, with the two states behaving like one larger NEM region
Overview: Queensland volatility 1-2 Feb 2017
A volatile couple of days in Queensland, with demand response evident
Initial Review: NEM-wide Price Event, Monday 30 Jan 2017
Extremely hot weather in NSW and the NEM’s underappreciated “rail gauge mismatch” contributed to a sharp multi-state price spike during the afternoon peak
Quick Review: $13,800/MWh Queensland spike Mon Jan 30
Quick review of an isolated early morning spike in Queensland
Initial Review: $14,000/MWh Spike in Qld, Fri 27 Jan 2017
A look at last Friday’s short sharp price spike in Queensland and why it led to negative settlement residues on the interconnection with NSW