A hypothetical case of what production patterns from wind might look like through a year with increased installed capacity of wind farms.
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.
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.
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
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.
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
A collection of analysis, observations and commentary about what we see (and have time to comment on) in terms of winter 2013 in Australia’s National Electricity Market
The distinctive winter demand shape returns – and with it comes the evening peaks in prices (even on a Sunday).
In my third post, I look at hedge levels – and how to infer them. Hedge levels will, to a large extend, define bidding behaviour unless there are physical issues with the plant.
Tasmania shivers this morning, driving electricity demand higher