guest author

Operating under siege

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




Summer reliability back in the headlines

Guest author, Allan O’Neil, provides us an update today on what we can see about summer 2019-20 (in the physical market, and the financial market), now that it is only just around the corner.


Let’s Talk Losses

Guest author, Tom Geiser, discusses the different approaches to loss factors amid recent market proposals.





NSW LOR and AEMO request for Generator Recall information

Yesterday, Tuesday 29 October 2019, AEMO issued a Market Notice requesting Generator Recall information from participants in the NSW region. This was issued at 15:27 on Tuesday 29 October 2019, and came after numerous Lack of Reserve notices, the first…






More on those negative prices – how do contracts affect bidding behaviour?

Guest author Allan O’Neil provides this handy explainer on how generators’ contract positions affect their bidding decisions and can make negative spot prices pay off, at least in the short term. Very useful for those readers not actively involved in wholesale trading in helping to understand why some conspiracy theories might not match reality.


Who’s responsible for those negative prices?

Rapidly growing solar PV output has been widely tagged as the cause of low and even negative prices in Queensland. But in any market it’s the behaviour of ALL participants that determines price outcomes. Guest author Allan O’Neil takes a closer look at recent NEM bidding.


ESOO Unboxing

Without resiling from last week’s criticism of how the headlines from AEMO’s 2019 Electricity Statement of Opportunities (ESOO) were communicated, it’d be churlish for me to fault the depth of disclosure and data sitting behind those results. Literally tens if…


ConfUSEd by the ESOO? You’re not alone.

I’d rather not add to the number of conspiracy theories in circulation, but I wonder if there’s a conspiracy to make understanding our electricity system in general, and its reliability in particular, as difficult as humanly possible. There’s no doubt…


War of Losses

Some thoughts from Derek Chapman, from Adani Renewables, in conjunction with two rule change requests at the AEMC relating to Marginal Loss Factors.