Collections of events that we see happening in the NEM, categorised in terms of the seasons in which they occur.
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.
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.
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.
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.
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.
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).
Following from a period of elevated prices in South Australia, prices dropped on Thursday. Here’s some reasons why…
Spot Prices in South Australia were elevated over the past 7 days – here are some reasons why.
It appears, from this high-level analysis, that events in the State of Origin mapped to changes in electricity demand across Brisbane last night.
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.
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 distinctive winter demand shape returns – and with it comes the evening peaks in prices (even on a Sunday).
Tasmania shivers this morning, driving electricity demand higher
Augurs to be an interesting day in South Australia today, with two (now three) price spikes already this morning – due in part to no supplies from coal, or from wind.
Prompted by a reader’s question, we provide some further analysis into which brown coal plants have been declining output in recent times, and why this might be the case.
A price spike late at night in South Australia, not long after posting other comments about low surplus generation capacity.
Spot prices in South Australia have been seen to be higher in the month of April than in the prior months, which is somewhat counter-intuitive. Prices also spiked this evening on a number of occasions above $500/MWh – here’s some of the reasons why.
Here’s an animated view of how price volatility emerged in the Queensland region of the National Electricity Market emerged on 20th December 2012 – and the range of factors that contributed.
The Macarthur Wind Farm opening was officially opened today, but the wind did not make an appearance.
Following some tweets from the esaa mentioning how the demand in Victoria on Tuesday 12th March was the highest seen for four years, we had a look back through our records on the day.