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.
Seasonal Record of Events in the Market
Collections of events that we see happening in the NEM, categorised in terms of the seasons in which they occur.
Is Mortlake bucking the trend?
A quick look at the long-run trend in output at Origin Energy’s large Mortlake plant in western Victoria.
CORRECTION – Tamar Valley is not mothballed, just bid unavailable
A correction about Tamar Valley’s drop in production – and some further thoughts.
Another station down – to what extent due to local factors?
Despite consistently averaging monthly output of up to 200MW for a number of years, the Tamar Valley power station has been mothballed following an ownership change
Updated animation of 20th December 2012 – a volatile day in the Queensland Region
An updated animation of 20th December 2012 focused on the Queensland region – a volatile day for that region.
Sydney swelters on Thursday, but demand remains in the doldrums
Despite some high temperatures around Sydney today, electricity demand remained subdued.
Has declining demand claimed its next victim?
Some recent changes in the MT PASA forward view of available generation capacities in NSW seem to imply that the declining demand might have taken another victim.
Queensland lunchtime demand slips away….
Today (Wednesday 24th July) we note how the Queensland lunchtime electricity demand is stuck in the blue zone – the uptake of solar PV, and a sunny day for Clean Energy Week, would be part of the reason.
Daily wind generation does not seem to be close to 90% of South Australia’s supplies–are we missing something?
Wind generation on some days in the past 2 weeks supplied a big percentage of SA demand – but not (on a daily basis, at least) near the 90% level.
Animation of several hours over the evening of Saturday 12th January 2013 in Queensland
Here’s another animated case study of one more interesting time that occurred through summer 2013 in Queensland – on this occasion the evening of Saturday 12th January 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.
Wild price gyrations in Victoria (and elsewhere) today following a station trip at Yallourn
An animation of 90 minutes this morning where the price gyrated wildly in response to a trip at Yallourn, and numerous subsequent reactions by market participants and the AEMO.
Chilly winter evenings show demand has declined for various reasons – not just solar PV
A cold evening in the NEM, and yet demand can’t make it past 30,000MW – which would have been quite startling 4 or 5 years ago (but not now, as demand has been declining for a number of reasons).
SA summary for Thursday, compared to the preceding week
Following from a period of elevated prices in South Australia, prices dropped on Thursday. Here’s some reasons why…
7-day South Australian overview (Thu 30 May to Wed 5 June)
Spot Prices in South Australia were elevated over the past 7 days – here are some reasons why.
Queenslanders boil (the kettle) during Origin loss
It appears, from this high-level analysis, that events in the State of Origin mapped to changes in electricity demand across Brisbane last night.
Prices yo-yo in SA this morning, as installed capacity goes missing
Following yesterday’s warnings about the potential for a tight supply/demand balance in South Australia this week, it was not really a surprise when the SMS alerts from NEM-Watch began buzzing for the 07:20 dispatch interval this morning (NEM time), highlighting that the dispatch price in SA had jumped to $12,199.20/MWh. This has continued through the morning.
Load shed warning (LOR3) issued by AEMO for Tuesday in South Australia
It’s not looking that great, currently, for the supply/demand balance in South Australia this week – when viewing predispatch, ST PASA and AEMO’s Market Notices
The return of the evening price spikes as the winter demand shape arrives a little early
The distinctive winter demand shape returns – and with it comes the evening peaks in prices (even on a Sunday).