Australian Daily Electrical Power Generation Data – Friday 1st June 2018

Posted on Sat 06/02/2018 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.

Friday 1st June 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.

Both of those (exact) figures for total power consumption for the daily minimum and the daily Peak are taken directly from the AEMO site, adding up the totals for each of the five States in this coverage area.

Note the slight difference between Total Consumed Power and Total Generated Power. That indicates some of the losses in the grid system.

Daily Minimum Power Consumption – 19040MW

Daily Peak Power Consumption – 28330MW

Daily Minimum Generated Power – 19600MW

Daily Maximum Generated Power – 29000MW

Average Total Power Generation – 24000MW

Total Power Generation In GWH – 576GWH

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.

Daily Minimum Coal Fired – 15400MW

Daily Peak Coal Fired – 18700MW

Average Coal Fired Generation – 17700MW

Total Generated Power – 424.8GWH

Average Percentage Of Total – 73.75%

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

Daily Minimum – 1250MW

Daily Peak – 5200MW

Average Natural Gas Fired Generation – 2550MW

Total Generated Power – 61.2GWH

Average Percentage Of Total – 10.63%

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.

Daily Minimum – 2900MW

Daily Peak – 5750MW

Average Renewable Generation – 3750MW

Total Generated Power – 90GWH

Average Percentage Of Total – 15.63%

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.

Daily Minimum – 1300MW

Daily Peak – 5550MW

Average Hydro Generation – 2670MW

Total Generated Power – 64.08GWH

Average Percentage Of Total – 11.13%

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 5225MW.

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.

Daily Minimum – 300MW

Daily Peak – 1550MW

Average Wind Generation – 960MW

Total Generated Power – 23.04GWH

Average Percentage Of Total – 4%

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.

Daily Minimum – Zero

Daily Peak – 470MW

Average Solar Plant Generation for hours of generation – 290MW (7.30AM till 5.30PM)

Average Solar Plant Generation across the whole 24 hour day – 120MW

Total Generated Power – 2.88GWH

Average Percentage Of Total across the whole 24 hour day– 0.5%

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.

Daily Minimum – Zero

Daily Peak – 3900MW

Average For Hours of Generation – 2480MW (7AM till 5.30PM)

Average Rooftop Solar Generation across the whole 24 hour day – 1080MW

Total Generated Power – 25.92GWH

Average Percentage Of Total across the whole 24 hour day – 4.5%


  1. Finding Averages – On each graph there are 9 time points. Add the total at each time point together, and divide by 9. For coal fired power, I do this on a State by State basis (for the 3 States with coal fired power) and then add the total for each State together.
  2. For both solar power averages, I have used the average for a (half) Sine Wave which is 0.637 of the Peak value.
  3. For total power in GWH, multiply the average daily power by 24.
  4. The total percentages for coal fired power, natural gas fired power and all renewables adds up to 100%.
  5. The total percentages for Hydro, Wind, and Solar adds up to the total percentage for all Renewables.

Comments For This Day

It was officially the first day of Winter on this day, and the cold set in, raising power consumption across the board. The early morning 4AM minimum, the Base Load minimum, was up by around 800MW, over 19000MW in fact, over that figure for the first time in a long time. The evening peak, after rising considerably the day before, rose again today, this time by almost 500MW.

The average for total power generation across the whole 24 hours also rose, this time by 300MW.

Coal fired power being supplied at that Peak, after rising by 1400MW the day before, rose again by a further 900MW over and above the total for that previous day.

The 24 hour average for coal fired power was 200MW higher, meaning that the average for coal fired power average has risen every day this week, and is now 1100MW higher than it was on Monday, keeping pace with the rise in the average from all sources, which is also 100MW higher than it was on Monday. Now, while the average for coal fired power rose by 200MW, that was delivered by less Units than the day before, as one of those Units (Unit 3) at the old Liddell plant went off line at around 3PM, and not a staged removal, but a sudden loss of around 400MW, virtually in an instant, and covering that loss, some of the fast starting natural gas plants came on line to supply what was lost at that time. So, with the loss of that Unit, the remaining Units ramped up, not just to cover the increase in consumption at the evening Peak, but to also deliver the extra 400MW from that lost Unit at Liddell, proving again that coal fired power can indeed ramp up and down to cater for major fluctuations in consumption.

Because the Peak was higher, natural gas fired power was also higher at the Peak as well (higher then by 500MW) and the average was 230MW higher.

Hydro power was slightly higher at the Peak and the average was 190MW higher.

Solar power was marginally higher by 10MW, keeping in mind that solar power only made up half of one percent of total power generation.

The big loser for the day was wind power, which fell to a low of 300MW, from a Nameplate of 5225MW. The average for the day was also way down, 330MW lower than for the day before when it was also low. That average for the day of 960MW is at a Capacity Factor of 18%. That large High Pressure system which brought that cold front is making its way very slowly Eastwards, with another High behind it so, not many isobars between the two of them indicating rising winds, so wind power may actually fall away again tomorrow.

Again, when power is needed the most, it’s coal fired power alone which covers that, as the smaller ones natural gas, hydro and wind are used to supply the remainder, only a quarter of the power which is actually required.

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.