A quick status update, early on Thursday 31st August 2023, about issues at Azure (caused by a power surge) that has been affecting AEMO (and our) systems.Read More
AEMO has confirmed our earlier hunch of a Scheduling Error in the immediate aftermath of the Liddell unit retirements.
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 help us understand the mechanics of how this happened.
Here’s where to find AEMO’s preliminary report on the loss of SCADA on 22nd April 2023 in Victoria that led to that region being suspended for more than 24 hours.
Taking a second look at the very early morning volatility in the NSW region on Monday 1st May 2023, we’ve used the ‘Constraint Dashboard’ widget in ez2view to get so far … and then added some *speculation* about how it might have been related to the retirement of Liddell from market systems. Is this accurate?
In an event (that seems) similar to 17th March 2023, a glitch in SCADA leads to the suspension of the market in the Victorian region on Saturday afternoon/evening 22nd April 2023.
On 6th April 2023 the AEMO published this preliminary report into the brief market suspension that occurred in NSW on 17th March 2023.
A just-announced AEMO market notice has declared a temporary suspension of the NSW market.
A short note following on from the Scheduling Error experienced by AEMO on 10th August 2022.
First day back in the NEM after a break and I see the that the ‘N-RVYS_2’ Constraint Set is contributing to morning price volatility in the NSW region again.
Also this week, the AEMO published a report about the glitch in the dispatch process that occurred back on 10th August 2022.
A short initial article to flag market volatility on Wednesday 10th August 2022 which sees ENERGY prices elevated (particularly TAS) and also Contingency FCAS prices at MPC
A short note about the AEMO preliminary report, published 16th March 2022 – into the TAS market suspension on 1st March 2022.
A short note about the AEMO preliminary report, published 4th March 2022 – into the SA market suspension on 18th February 2022.
This afternoon the AEMO alerted of a market suspension in the TAS region, which coincided with the failure of two undersea fibre cables that caused parts of the state to lose internet access.
A quick note about the brief Market Suspension in South Australia on Friday afternoon, 18th February 2022.
A short back-dated article, to link in AEMO’s final report on this incident.
What happened at each of the DUIDs impacted by the ‘Q>>NIL_CLWU_RGLC’ constraint equation on Sunday 24th January 2021 (Part 5)
It’s now seven months since the SCADA outage on Sunday 24th January 2021 – and we’re finally able to complete and publish this (quite long) article exploring some of the implications for units on the LHS of the ‘Q>>NIL_CLWU_RGLC’ constraint equation
How reversion to static line rating in the ‘Q>>NIL_CLWU_RGLC’ constraint equation contributed the price spike on Sunday 24th January 2021 (Part 4)
More time has elapsed since ‘Part 3’ on 24th March – today I’m posting a shorter piece (Part 4) that explains how RHS of the ‘Q>>NIL_CLWU_RGLC’ constraint equation drove down output and led to the price spike on Sunday 24th January 2021.
Piecing together what happened on Sunday 24th January 2021 with the ‘Q>>NIL_CLWU_RGLC’ constraint equation (Part 3)
It’s taken a while to find the time – but today I’m posting this next analytical piece (Part 3) that seeks to understand what happened on Sunday 24th January 2021 with the NEM-wide SCADA Failure, which contributed to the price spike that occurred in QLD by virtue of what it did to the ‘Q>>NIL_CLWU_RGLC’ constraint equation.