Price spikes in NSW and QLD on the first afternoon of December
Earlier this afternoon we were alerted to a price spike in NSW and QLD that was seemingly caused by a unit trip at one of the larger generators in NSW.
Earlier this afternoon we were alerted to a price spike in NSW and QLD that was seemingly caused by a unit trip at one of the larger generators in NSW.
Alerted to a price spike at 09:45 this morning in the QLD region, we discovered some reduction in load (spot-exposed Demand Response probably) and also a large collective trip in Solar Farm output (reasons...
Third case study today - and last one looking back at 2013. This one is a bit more complex than the first two.
Like was the case on 4th July 2013, the cause of this large Aggregate Raw Off-Target result (across all Semi-Scheduled Generators) was a single unit trip.
Does not take long to see why this particular dispatch interval was one of the few dispatch intervals (before 2019!) flagged in our top-down analysis of aggregate Raw Off-Target across all Semi-Scheduled units in...
Following on from Tuesday's main article (summarising results across 105,120 dispatch intervals through 2019 for 'all Coal' and 'all Wind' groupings), this is the first of 4 x Case Studies that look at each...
A quick look at Saturday 11th April (Easter Saturday) where there were major reductions in output at 4 units across Victoria - 3 coal units in the Latrobe Valley and the Macarthur Wind Farm...
Guest author, Allan O'Neil does a masterful job with limited time in reviewing some of the goings-on in the NEM (particularly VIC and SA) on Thursday 30th January 2020
A brief overview of a stressful afternoon/evening in the NEM, where a confluence of events (heatwave-driven high demand, low wind, coal unit trip, etc...) drive LOR2 low reserve condition notice in both VIC and...
A quick look after the unit trip (including reported explosion) at Mortlake Unit 2
Following the notice from AGL Energy on Friday last week about the extended outage occurring at Loy Yang A unit 2, here's some initial thoughts via WattClarity (with more to come as time permits)
The framework we used to analyse the extent to which coal-fired power is "dependable" in the Generator Report Card, and the extent to which it's been changing.
Some quick notes about the volatility seen in the NEM on Friday 1st March 2019 - a hot day in Victoria and South Australia, the first day of Autumn.
Two examples where units (in these cases Semi-Scheduled) appeared to disregard dispatch targets.
Highlighting one example of a unit trip. We expect we will find many in the process of compiling our Generator Report Card 2018 - the bigger question being whether the incidence is increasing (and,...
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...
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...
At 23:05 on Saturday 9th March AEMO advised that the Millmerran power station units 1 and 2 tripped simultaneously at 22:07 (58 minutes prior) - for reasons still unknown. Here's how we saw it...