Australian Daily Wind Power Generation Data – Wednesday 10 February 2021

Posted on Thu 02/11/2021 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.

Wednesday 10 February 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 – 365MW (12.35PM)

Daily Maximum – 3095MW (1.45AM)

Average Wind Generation – 1711MW

Total Generated Power – 41.06GWH

Percentage Supplied By Wind Power At The Low Point For The Day – 1.3%

Percentage Supplied By Wind Power At Peak Power For The Day – 699MW of 28250MW – 4.25PM – 2.47%

Average Percentage Of Overall Total Power Generation – 6.9%

Daily Operational Capacity Factor – 21.04%

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 down on the level of the day before. That average of 1711MW gave wind generation a daily operational Capacity Factor of 21%, and that’s eight percent lower than the year round average. Note from the graph that for most of the day wind generation was way lower, and the only reason that average is even as high as it is is because wind was high at the times of day when overall power consumption is at its lowest for the day. Note the difference between the high and the low for the day, a very large gap of 2730MW, and it just fell constantly from that high to the low over just eleven hours, and while green sympathisers complain about unreliability when a single coal fired unit of 500MW drops off line, this loss for wind generation amounts to more than the loss of more than five of those coal fired Units. At that low point for wind of 365MW, well, at that time, wind was operating at just 4.5% of its total Nameplate, so less than five in every hundred wind towers operating and delivering power.

The situation was worst in the State of South Australia, and I have highlighted that by showing just the graph for wind generation for that State, where there are 22 wind plants in all, and when you look at the graph at right showing just wind generation for South Australia, you’ll see that, under the graph itself, I have ticked the boxes just for those 22 wind plants in this State. The total Nameplate is 2142MW, so there are around 1100 to 1200 individual wind towers spread across those 22 wind plants in the South eastern part of the State. What I have done is to show the low point for the day, and that is highlighted by the vertical dotted line shown at 11.35AM on the time bar along the horizontal axis. So, now look across to the left side vertical axis showing total power output, and you can see that at that same time of 11.35AM, EVERY wind plant in the whole State was generating a total of, wait for it, 3.1MW. THREE lousy MegaWatts of power in totality. That’s every single wind plant in the State operating at a Capacity Factor at that time of 0.15%, so low as to not even count really. Here we have around 1100 or more individual wind towers, and perhaps just ….. TWO of them had their blades turning at that time. Two wind towers in operation across the whole State, which relies on its wind power, and the State proudly proclaims that they are the model for the rest of Australia when it comes to renewable power.

The word pitiful does not even cut it here.


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.