Price volatility returns to the Queensland region
A quick look at some more volatility experienced in the Queensland region on Wednesday 23rd October
Articles by Paul McArdle
One of three founders of Global-Roam back in 2000, Paul has been CEO of the company since that time.
As an author on WattClarity, Paul's focus has been to help make the electricity market more understandable.
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.
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.
Spring 2013 in the NEM
A collection of articles posted about what we see happening in the NEM through spring 2013
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.
The NEM might support 37% energy supplied from wind – but it would still require at least 21GW of non-wind capacity on standby
A hypothetical case of what production patterns from wind might look like through a year with increased installed capacity of wind farms.
Aggregate wind farm output growing, but intermittency still remains
A more detailed look at how the percentage of energy supplied in the NEM from wind has risen to be 3.5% on an annual basis – though the degree of indeterminacy continues to be significant despite the growing diversification of wind farm sites.
Who was the winner of our competition for LinkingIn to WattClarity?
Rather than just drawing a lucky winner out of a hat, or using a random number generator, someone suggested we take a different approach – and here are the results.
Performance of wind farms, to date in 2013
Here’s a view of how daily wind farm production (by region, and NEM-wide) has trended over the 2013 calendar year to date – the correlation of output on a daily basis, and the contribution towards regional and NEM-wide demand
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).