Australian Daily Wind Power Generation Data – Wednesday 12 May 2021

Posted on Thu 05/13/2021 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 12 May 2021

New Wind Plants added to the grid.

Two new wind plants have been officially added to the grid as of this day.

Those two plants are:

(1) The first stage of the Bango Wind Plant near Yass on the Southern Tablelands in New South Wales. This adds the Nameplate for this wind plant of 159MW, and this constitutes the first part of this wind plant, which, when completed, will have 46 individual wind towers, each with a 5.2MW turbine/generator on top, with a total Nameplate of 240MW.

(2) The Berrybank 1 Wind Plant near Lismore in South Western Victoria, with a Nameplate of 180MW, from 43 individual wind towers with 4.2MW turbine/generators on top.

There was also a further addition of 116MW from an existing wind plant which has completed its second stage, but I cannot find which plant that actually is, other than knowing that the total Nameplate has added that extra to make up to the new total Nameplate for all wind plants.

All up, this is a total Nameplate increase of 455MW, and the new Nameplate total for all wind power of 8587MW, and there are now 69 separate wind plants. I have included the full image of the new total showing all 69 wind plants.

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 8587MW, and this is from the current total of 69 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 – 389MW (3.10PM)

Daily Maximum – 2210MW (4.35AM)

Average Wind Generation – 1174MW

Total Generated Power – 28.17GWH

Percentage Supplied By Wind Power At The Low Point For The Day – 1.6%

Percentage Supplied By Wind Power At Peak Power For The Day – 562MW of 26370MW – 5.55PM – 2.13%

Average Percentage Of Overall Total Power Generation – 4.9%

Daily Operational Capacity Factor – 13.67%

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

On this day when those new plants were added, wind generation was lower than it was on the day before this. That daily average of 1174MW gave wind generation a daily operational Capacity Factor (CF) of 13.7%, and that was 16% lower than the year round average. The Nameplate went higher, and the minimum was lower, and at that low point, wind was only operating at a CF of just 4.5%, so there was less than five individual wind towers in every hundred of them which actually had their blades rotating, and in total wind generation was delivering just 1.6% of all the generated power from every source, and at the usual daily peak around 6PM, wind was only marginally higher, delivering just 2.1% of all the generated power from every source. You can also see from the data that even though the high for wind generation was just 2210, there was still a substantial difference between the high for the day and the low, and here on this day, that gap was 1800MW.


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.