Australian Daily Wind Power Generation Data – Monday 11th January 2021

Posted on Tue 01/12/2021 by


By Anton Lang ~

This Post details the daily wind power generation data for the AEMO coverage area in Australia. For the background information, refer to the Introductory Post at this link.

Each image is shown here at a smaller size to fit on the page alongside the data for that day. If you click on each image, it will open on a new page and at a larger size so you can better see the detail.

Note also that on some days, there will be a scale change for the main wind power image, and that even though images may look similar in shape for the power generation black line on the graph when compared to other days, that scale (the total power shown on the left hand vertical axis) has been changed to show the graph at a larger size to better fit the image for that graph.

Monday 11th January 2021

Total Wind Power Generation

This image shows the total power generated across the whole day by every wind plant in this vast AEMO coverage area for Australia.

The total Nameplate for all these wind plants changes as each new wind plant comes on line delivering power to the grid. That current Nameplate is 8132MW, and this is from the current total of 67 wind plants.

Note that the shape of this wind power load curve does not follow the shape of the main load curve for total power generation, and that is seen in the image below, the solid black line across the top of the image for that graph. Wind power generates its power only when the wind is blowing, hence it does not follow the actual power generation Load Curve, which is also the the exact same shaped curve as for actual power consumption.

For this data, I have added the times for the daily minimum, and the daily maximum, to show how they do not correlate with the actual times of minimum power consumption (around 4AM each day) and maximum power consumption, the evening Peak. (at around 6.40PM in Winter and earlier during the Summer Months.)

Daily Minimum – 2287MW (12.05AM)

Daily Maximum – 4094MW (5.50AM)

Average Wind Generation – 3364MW

Total Generated Power – 80.73GWH

Percentage Supplied By Wind Power At The Low Point For The Day – 11.0%

Percentage Supplied By Wind Power At Peak Power For The Day – 3169MW of 31300MW – 2.55PM – 10.12%

Average Percentage Of Overall Total Power Generation – 13.2%

Daily Operational Capacity Factor – 41.37%

Wind Power Generation Versus Total Power Generation

This image shows the total power generated from all the wind plants in this AEMO coverage area, and compares it to the overall total generated power from every source of power generation, which is the black line at the top of the graph. Wind power is the green coloured area, along the bottom of this graph.

While the green colour in this image looks to be a different shape to the graph above, keep in mind here that the scale is completely different, and that green coloured Wind total is the same as for the image shown above, only with the scale changed so it can fit onto the graph.


  1. Finding Wind Power Average – On the graph, there are 25 hourly time points, starting with midnight and finishing with midnight. I have added the total at each of those hourly time points together, and divided the resultant total by 25 to give an average in MegaWatts. (MW)
  2. For total power in GWH, multiply the average daily power by 24, and then divide by 1000.
  3. For the Capacity Factor, that is calculated by dividing the average wind generation by the current Nameplate and then multiplying that by 100 to give a percentage.

Comments For This Day

Wind generation was way up on this day, and that average of 3364MW was well more than double the average of the day before. That average gave wind generation a daily operational Capacity Factor of 41.37%, and yet again note the irony in that this a good day for wind generation, and it is barely higher than just 40% of what it is actually capable of, its Nameplate of 8132MW. Even so, it still only delivered 13% of all generated power for the day, due mainly to the very large rise in overall power consumption across the whole day, and that rise was almost 17% higher than the power consumption level on Sunday.

Note here that I have included a copy of the wind generation graph at right, and here I have added a circle to the graph, at the time region of 6PM to 9.30PM, the same time as the usual daily peak for power consumption. Note the large spikes down and up, as large power losses happened. Those losses of power range between 500MW and 1100MW, with the last part of that large spike being a 600MW loss of power in five minutes. This was preceded across the day by numerous losses of power from 200MW+, and at 6AM, a loss of 1800MW over two hours.

This is a stark example of wind power’s intermittency. Those large losses of power are in high wind situations as turbines are automatically turned off so the blades are not destroyed by high wind speeds. Those large losses of 600MW indicate around 300 wind towers just switching off, and that’s around ten to fifteen and more wind plants going back to zero.


Anton Lang uses the screen name of TonyfromOz, and he writes at this site, PA Pundits International on topics related to electrical power generation, from all sources, concentrating mainly on Renewable Power, and how the two most favoured methods of renewable power generation, Wind Power and all versions of Solar Power, fail comprehensively to deliver levels of power required to replace traditional power generation. His Bio is at this link.