Prior to the wider release of the GSD2020 … here’s a 10-year trend of bidding behaviour
A chart we threw together quickly at Beer O’Clock today (from the imminent release of the GSD2020) was worth sharing more broadly on WattClarity today…
generator rebid
‘Too Low for Zero’ as a parable for the AER Issues Paper?
Here’s an attempt to translate the concern underlying the AER Issues Paper into ‘plain English’ via the popular song.
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)
A day in the life of a large-scale Solar Farm in the NEM –a Case Study of Ross River Solar Farm on Thursday 10th October 2019
Thursday 10th October 2019 presented another day of many negative price events in the QLD region. In this Case Study (prepared for dual purposes) we look at how one particular solar farm operated through this period – Ross River Solar Farm.
Very preliminary review of Quantity and Quality of Rebids suggests some interesting details…
As part of the process of compilation of our Generator Report Card 2018, we’re delving into quite some detail into various aspects of generator bidding and re-bidding. Today I thought it might be useful to share some *very early and preliminary* observations that we’re starting to see when trending and categorising rebids.
Puzzling through three rule change requests
Some ideas that I have been puzzling over – about the overlaps and contradictions between 3 rule changes under consideration at the AEMC currently
1) The Demand Response Mechanism (better known as the Negawatt buyback mechanism)
2) The Bidding in Good Faith deliberation
3) The Requirement for Price-Responsive (large) Demand to bid into central dispatch
What happens if (when?) existing wind farms cross to “the Dark Side”?
A quick look at a price spike that occurred Monday evening (4th August) in South Australia
How prices will be set, under the new “Demand Response Mechanism”
Some worked examples of how several forms of Demand Response (including the proposed new Demand Response Mechanism) might impact wholesale prices, and participant positions.
No, these were not spurious price spikes in Queensland today
Some quick observations about the patterns of volatility seen this week in Queensland
Is solar PV providing more opportunity for spot price engineering?
Some initial analysis looking into the question of whether the increased penetration of solar PV is increasing the variability of scheduled demand to the point that generators can exert more pressure on spot prices.
Price volatility returns to the Queensland region
A quick look at some more volatility experienced in the Queensland region on Wednesday 23rd October
Two evening price spikes send jitters …
The dispatch price in Queensland spiked to $1,500/MWh at 18:25 and again at 22:40 yesterday evening – triggering jitters in some who fear a return to the volatility of summer 2013.
Quick quiz – how many do you get right, about what happened in the Queensland Region over summer 2013?
Five thought-provoking questions about what really happened in Queensland over summer 2013 – and the supplementary question about what it all means for the future.
Revisiting 2nd January 2013 in Queensland – to illustrate the interaction of rebidding and constraints
Beginning prior to 7am and progressing through the morning of Wednesday 2nd January 2013, there was significant volatility in the Queensland region of the National Electricity Market – including four spikes at or above $1,000/MWh.
Here’s a walk-through of how it unfolded, with some pointers to some of the contributing factors.