Australian Daily Wind Power Generation Data – Saturday 29th February 2020

Posted on Sun 03/01/2020 by

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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.

Saturday 29th February 2020

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 6960MW, and this is from the current total of 57 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 – 331MW (12.00PM – Midday)

Daily Maximum – 1658MW (12.20AM)

Average Wind Generation – 880MW

Total Generated Power – 21.12GWH

Percentage Supplied By Wind Power At The Low Point For The Day – 1.40%

Percentage Supplied By Wind Power At Peak Power For The Day – 345MW of 24980MW – 11.35AM – 1.38%

Average Percentage Of Overall Total Power Generation – 3.9%

Daily Operational Capacity Factor – 12.64%

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.

Notes

  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

In the last 18 Months, the total Nameplate for wind power has risen ten times, from a total of 4900MW to now 6960MW, so an increase of around 2100MW.

There have been two times when the daily total power generation (and from that the average power generation across the day) has been lower than it was yesterday, but that was from a much lower total.

Total power generation from ALL wind power yesterday (Saturday 29Feb2020) was 21.12GWH, and that equates to an average across the day of just 880MW per hour.

That’s 880MW from a Nameplate of 6960MW, so that means the daily operational Capacity Factor (CF) was 12.64%, so across the whole day, barely one in every eight wind towers had their blades turning over, so with (around) 3650 of them, barely 460 of them were operating and delivering power.

That total power delivered amounted to 3.9% of the generated power from every source.

Power consumption goes from low to high during daylight hours and then back to its low point for the day again.

Of late, wind generation has been doing the opposite, so that when consumption is at its highest during the day, wind power is stumbling along at its lows for the day, and yesterday was no different, when for NINE hours, wind generation barely managed 1.4% of power delivery, and at the low for the day, 6960MW of wind Nameplate was generating 330MW, at a CF of 4.7%.

Oh and you know how these newer wind plants are so much more efficient than those older ones, you know, how the technology has increased out of sight.

18 Months ago, back when wind Nameplate was 4900MW, the CF was a little lower than the 30% I have always quoted. It was around 29.5% in those days.

As those newer and more efficient wind turbines came on stream, so that now we have 2100MW of those newer turbines, more efficient than those older ones the operational CF is, umm ….. 29.5%. it had struggled almost to 30% twice and both times has fallen back. The 52 week average CF and the long term CF, now 80 weeks are both within a tenth of a percentage point of each other.

So, that Nameplate of 6960MW equates to an average power delivery of 2050MW.

*****

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.

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