Articles by Allan O'Neil




Down 55% – but not out

Over 2,000 MW – or around 55% – of South Australia’s firm supply capacity was unavailable last Friday evening (March 12, 2021), along with virtually all of its large-scale renewable…


New Sources of Strength

Guest author Allan O’Neil puts together an in-depth explainer about system strength and looks at the current approach to system strength management in South Australia, its impacts and the imminent installation of synchronous condensers on the SA grid.


Transition Fooled?

Through the lens of the GSD2020, Allan O’Neil looks at the much-discussed role of gas-fired generation in the ‘energy transition’ of the NEM’s generation sector






Observing Easter Saturday, a little belatedly

Guest author, Allan O’Neil, invests some time to explore a number of different aspects of Easter Saturday (11th April 2020), each noteworthy in their own right (including low demand, high percentage share renewables, negative prices and dynamic bidding)



Surviving on the island – again

Another islanding event separated the SA region from the rest of the NEM yesterday (Monday, 2nd of March). Allan O’Neil investigates what happened before the event and possible causes.


Don’t Forget About FCAS!

Guest author, Allan O’Neil, takes a look at what’s happened in the (islanded) market for FCAS services in South Australia over the past two weeks with Heywood out of service. He notes:
“generators in SA as a group would have paid out roughly twice in contingency raise FCAS costs what they earned from selling energy”




How Good is Solar Farming?

Guest author, Allan O’Neil, takes a look, via the GSD2019 (released today), at the four different headwinds facing solar farm developers and operators operating in the NEM.



Operating under siege

We take a look at challenges for AEMO in operating the system under the security threats posed by the ongoing bushfires …


Out of the blue, an LOR2

Considering the extraordinary weather, bushfires, and a couple of large Victorian generators still not back from long term repairs, last week was probably less eventful for the NEM than might…