Australian Daily Electrical Power Generation Data – Tuesday 15th May 2018

Posted on Wed 05/16/2018 by


By Anton Lang ~

This Post details the daily power consumption 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 the scale change for some of the images. That scale (the total power shown on the left hand axis) has been changed to show the graph at a larger size.

Tuesday 15th May 2018

Total Power Generation All Sources

Here, the black line is the total power generation from every source. This is also the same as for total power consumption, which is slightly lower after minor grid losses are taken into account.

The Blue line is all fossil fuelled power generation. The orange line is hydro power generation. The purple line is wind power generation, and the red line is for solar power generation.

Average Total Power Generation/Consumption – 23000MW

Daily Minimum – 18170MW

Daily Peak – 27370MW

Total Generated Power – 552GWH

All Fossil Fuels Total – Coal Fired and Natural Gas Fired Power Generation

Here, the upper black line is the total from all fossil fuels, and this is the same as the blue line in the image directly above.

The black line just under that top black line is the Sub Total just for coal fired power. Note here how closely that coal fired line follows the shape of the upper Load Curve, and this indicates that coal fired power can be ramped up and down to follow actual power consumption.

Average Coal Fired Generation – 17000MW

Daily Minimum – 15500MW

Daily Peak – 18000MW

Total Generated Power – 408GWH

Average Percentage Of Total – 73.9%

Natural Gas Fired Power Generation

This image for Natural Gas Fired Power Generation shows the gap between the total for all Fossil Fuelled Sources of power generation and Coal Fired Power Generation in the image directly above.

Note here how closely the shape follows the total power generation Load Curve in the top image, indicating how these natural gas fired plants are used to smooth out the load curve to match actual power consumption.

Note also that while coal fired power provides the bulk of the power, these natural gas fired plants are used to add more power to the system during those time periods during the day when consumption rises for the morning peak, and the main evening Peak

Average Natural Gas Fired Generation – 2500MW

Daily Minimum – 1250MW

Daily Peak – 4700MW

Total Generated Power – 60GWH

Average Percentage Of Total – 10.9%

All Renewable Power Generation Versus Total Power Generation

This Image shows just the gap between total power generation from every source and the total power from renewable sources only. It is the same image as the first image at the top here, only with the fossil fuelled total (the blue line) removed from the graph, As in that top image, it shows Hydro Power, (orange line) wind power, (purple line) and solar power. (red line) What I have then done is added the black line just above those coloured lines and this indicates the Sub Total of power from those three renewable sources only. This is to highlight the gap between the total power generation and the total from renewable sources alone.

All Renewable Power Generation (Does not include rooftop solar generation)

This image is the same as for the one directly above for all renewable power, only with the total from all sources removed from the graph. As the scale of the left hand vertical axis has now changed, you can better see the detail of all renewable power. Again, the orange line is for hydro, the purple line is for wind, and the red line is for solar, and the black line is the Sub total for all renewable power. The other colour just showing indicates smaller plants, mostly using biofuels as their fuel source, tiny plants adding up to a very small total and for a short time duration.

Average Renewable Generation – 3500mW

Daily Minimum -1700MW

Daily Peak – 5700MW

Total Generated Power – 84GWH

Average Percentage Of Total – 15.2%

Hydro Power Generation

This image shows all Hydro power generation. It is the same as the orange line in the top image for power generation from all sources.

Again, note here that the shape of this load curve follows the shape of the main load curve for all power generation, in that it has similar peaks in the morning and for the man evening Peak. The coloured lines at the bottom of this graph indicate the power generation from each of the hydro plants in this coverage area.

Average Hydro Generation – 2250MW

Daily Minimum – 1150MW

Daily Peak – 4600MW

Total Generated Power – 54GWH

Average Percentage Of Total – 9.8%

Wind Power Generation

This image shows the total power generated by every wind plant in this vast coverage area. It is the same as for the purple coloured line in the image at the top showing generation from all sources.

The total Nameplate for all these wind plants is just under 5000MW.

Note that the shape of this load curve does not follow the shape of the main load curve for total power generation. Wind power generates its power only when the wind is blowing, hence it does not follow actual power consumption levels.

Average Wind Generation – 1150MW

Daily Minimum – 400MW

Daily Peak – 1650MW

Total Generated Power – 27.6GWH

Average Percentage Of Total – 5%

Solar Power Plant Generation

This image shows the total power generated from all the solar power plants in this coverage area. This is the same as for the red coloured line you can just see in that top image.

The total Nameplate for all these 16 solar plants is just lower than 1000MW.

Average Solar Plant Generation for hours of generation – 220MWMW (7AM till 5.30PM)

Average Solar Plant Generation across the whole 24 hour day – 100MW

Daily Minimum – Zero

Daily Peak – 380MW

Total Generated Power – 2.4GWH

Average Percentage Of Total across the whole 24 hour day– 0.4%

Rooftop Solar Power Generation

As this source of power generation is classed as ‘behind the meter’, it is not included in the total power generation. Note here that the State of Queensland (QLD on the legend under the graph) is broken down into four separate areas as this is the largest State with the largest number of installations.

While the total Nameplate changes often, the latest information is that the total is now 7800MW, and that is a large total. However, that total equates to 1.8 Million homes with panels on their roof. That equates to an average sized installation of 4.3KW. Most of the power is consumed by the homes with the panels, and what is fed back to the grid, while seemingly still high is spread across that huge number of installations across the whole of this coverage area.

Average For Hours of Generation – 2230MW (7AM till 5.30PM)

Average Rooftop Solar Generation across the whole 24 hour day – 975MW

Daily Minimum – Zero

Daily Peak – 3500MW

Total Generated Power – 23.4GWH

Average Percentage Of Total across the whole 24 hour day – 4.24%


The total percentages for coal fired power, natural gas fired power and all renewables adds up to 100%.

The total percentages for Hydro, Wind, and Solar adds up to the total percentage for all Renewables.

For total power in GWH, multiply the average daily power by 24.

Comments For This Day

With the colder weather of Winter approaching, both the minimum power consumption at the low point for the day (4AM) and the Peak at 6PM are slowly rising again. The minimum was back over 18000MW and the peak was over 27000MW. Both of those (exact) figures are taken directly from the AEMO site, adding up the totals for each of the five States in this coverage area.

In that same area, there are 16 coal fired power plants and while the number of Units varies with each of those plants, there are 48 Units in all. Of those Units, 7 of them were off line on this day, and that amounted to 3180MW removed from the grids. That’s 14% of the total for coal fired power Nameplate, and even with that much removed from the system, coal fired power is still delivering almost three quarters of all the power that is being consumed.

When you add together coal fired power and natural gas fired power, the total percentage comes in at just under 85% of all power, all of that from fossil fuelled sources.

Wind power had a better day than the day before, and even then, that still only amounts to a Capacity Factor of 23%, when the yearly average is 30%.

Note the percentage of power supplied by Solar Power Plants, and that’s what can only be called a pitiful total of 0.4%. If solar power is supposed to be one of the answers, then someone is asking the wrong question.

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.