Australian Daily Electrical Power Generation Data – Wednesday 19th June 2019

Posted on Thu 06/20/2019 by

3


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 all of the images, and that even though they look similar in size of generation, 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 19th June 2019

Total Power Generation All Sources

Here, the total power generation from every power plant source is the top of the load curve, with each colour indicating a source of power generation. This is also similar to the total power consumption, which is slightly lower after minor grid losses are taken into account.

The dark grey colour is for the black coal fired power generation. The yellowish colour is for the brown coal fired power generation. The purple colour is for natural gas fired power generation. The blue colour is for Hydro (water) power generation. The green colour is for wind power generation. The red colour in the dip between the two peaks is for solar power plant generation. The other colours mixed in with the rest of them are from those smaller Other sources. Rooftop solar power is not included on this graph, as this shows just the power generation from all power plants only.

In the data below, 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. Also, 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 – 19270MW (4.05AM)

Daily Peak Power Consumption – 30240MW (6.25PM)

Daily Minimum Generated Power – 19400MW (4.05AM)

Daily Maximum Generated Power – 30500MW (6.25PM)

Average Total Power Generation – 25500MW

Total Power Generation In GWH – 612GWH

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 for all three colours, the grey, dark yellow and purple colours combined in the image directly above.

The black line just under that top black line is the Sub Total just for coal fired power, and that is the same as the combined colours of the grey and ark yellow on the image above. 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 – 14870MW

Daily Peak Coal Fired – 19060MW

Average Coal Fired Generation – 16970MW

Total Generated Power – 407.28GWH

Average Percentage Of Total – 66.55%

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 – 1890MW

Daily Peak – 6820MW

Average Natural Gas Fired Generation – 3720MW

Total Generated Power – 89.28GWH

Average Percentage Of Total – 14.59%

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 the three renewable sources only. It is the same image as the first image at the top here, only with the fossil fuelled total (the grey, yellow and purple colours) and those smaller Other sources removed from the graph, As in that top image, it shows Hydro Power, (blue colour) wind power, (green colour) and solar power. (red colour)  This image is used here to highlight the gap between the total power generation (that black line, which also includes RTS as well) 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 blue colour is for hydro, the green colour is for wind, and the red colour is for solar. The other colours you can just make out 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. 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 (4AM) and maximum power consumption. (around 6/6.30PM)

Daily Minimum – 2100MW

Daily Peak – 5800MW

Average Renewable Generation – 3750MW

Total Generated Power – 90GWH

Average Percentage Of Total – 14.70%

Generation From Other Sources

This image shows the power being generated from the smaller sources other than the major sources of power generation. These include Natural Gas/Diesel, Natural gas/Fuel Oil, Coal Seam Methane, Diesel, Kerosene, Waste Coal Mine Gas and Bagasse. All of these are fossil Fuels, excepting Bagasse which is sugar cane waste mostly used to provide main and auxilliary power at sugar mills.

Note the scale change here, as these are smaller producers of power, and the scale is changed so they can be more easily shown on the graph.

For the data here, I have just added the average generation across the day, the total generated power from all these sources, and the percentage of the total.

Average Generation – 1060MW

Total Generated Power – 25.44GWH

Average Percentage Of Total – 4.16%

Hydro Power Generation

This image shows all Hydro power generation. It is the same as the blue colour 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 main 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 – 1340MW

Daily Peak – 4480MW

Average Hydro Generation – 2780MW

Total Generated Power – 66.72GWH

Average Percentage Of Total – 10.90%

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 green coloured line in the image at the top showing generation from all sources.

The total Nameplate for all these wind plants is 6558MW, from a total of 54 wind plants.

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.

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 (4AM) and maximum power consumption. (around 6/6.30PM in Winter and earlier during the Summer Months.)

Daily Minimum – 180MW (6.35PM)

Daily Peak – 1200MW (12.05AM)

Average Wind Generation – 510MW

Total Generated Power – 12.24GWH

Average Percentage Of Total – 2.00%

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 area you can just see in that top image.

The total Nameplate for all these 35 solar plants is 2982MW.

Daily Minimum – Zero

Daily Peak – 1710MW

Average Solar Plant Generation for hours of generation – 1040MW (7.00AM till 5.30PM)

Average Solar Plant Generation across the whole 24 hour day – 460MW

Total Generated Power – 11.04GWH

Average Percentage Of Total across the whole 24 hour day – 1.80%

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 8000MW and higher, and that is a large total. However, that total equates to almost 2 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 is only consumed in the local residential areas. While seemingly still high this total is spread across that huge number of installations across the whole of this coverage area.

Daily Minimum – Zero

Daily Peak – 3350MW

Average For Hours of Generation – 1640MW (7.00AM till 5.30PM)

Average Rooftop Solar Generation across the whole 24 hour day – 720MW

Total Generated Power – 17.28GWH

Average Percentage Of Total across the whole 24 hour day – 2.82%

Wind And Solar Power Generation Versus Total Power Generation

This image shows the total power generated from all the wind plants, and all the solar power plants in this coverage area, combined in the one image, and compares it to the overall total generated power, the black line at the top of the graph, which also includes RTS as well. Wind power is the green coloured area, and solar plant power is the red coloured area, and these are the same as shown in those other coloured images at the top of the Post.

I have also added the data below for the total generated power for both wind and solar plant power combined, and the percentage of the overall total below for the maximum power from both sources with respect to the overall total, both at the maximum for both, and then for the total for both at the daily peak Power time.

Daily Peak for Wind and Solar Plant Power – 2000MW

Average Across the whole day – 970MW

Total Generated Power – 23.28GWH

Average Percentage of Total across the whole 24 hour day – 3.80%

Total Generated power at the daily maximum for both wind and solar plant power, the time of that maximum, and percentage of the total at that daily maximum –  2000MW – 1.00PM – 8.85%

Total Generated power for wind and solar plant power at Peak Power Consumption time for the day, and percentage of total at that daily Peak Power time – 200MW – 6.25PM – 0.66%

Overall Total With Rooftop Solar Power Added

This image shows the overall total generated power with Rooftop Solar Power (RTS) added to the total from all of the power plants. RTS is shown here as that orange colour added near the top of the graph in the middle, during daylight hours, and is indicated on the legend below the graph as Rooftop PV (PhotoVoltaics). The new overall total is that black line along the top of the Load Curve. Note here that with this RTS total added, the shape of the full load curve, the black line now looks almost exactly as Summer load curves used to look prior to the advent of RTS, and all those panels on roofs of private dwellings.

Notes

  1. Finding Averages – On each (non solar) graph, there are 25 hourly time points, starting with midnight and finishing with midnight. I have added the total at each time point together, and divided by 25.
  2. For both solar power averages, I have used the same addition of hourly time points and then divided by the same number of those time points of actual generation. Every so often, as the days get longer (or shorter after Summer) I change the hours of generation as those hours change.
  3. For total power in GWH, multiply the average daily power by 24, and then divide by 1000.
  4. The total percentages for coal fired power, natural gas fired power, all renewables, and those other smaller sources add up to 100%.
  5. The total percentages for Hydro, Wind, and Solar adds up to the total percentage for all Renewables.
  6. Total Generated Power is expressed here as GWH (GigaWattHours) and a GWH is a MWH (MegaWattHour) multiplied by 1000

Comments For This Day

This was another cold day, and power consumption rose again, and total power generation for the day was up to 612GWH, at an hourly average of 25500MW, and that was 750MW higher than for the day before., a rise of 3%. With power generation rising on all three week days so far, it has risen by 13.4% over the low on Sunday.

The early AM Base Load was 200MW higher at the same time as the day before, 3.35AM, and again it was within 100MW of that low for more than an hour as well. The evening peak was a little later in the evening, at 6.25, and power generation at that time was 30500MW, a rise of 700MW over the day before. Across the five States with their peaks at differing times, the peak in New South Wales (NSW) was 690MW higher. The peak in Queensland was actually lower, the only State to drop, and down by 140MW. In Victoria, the peak was 210MW higher. In the two States with the lowest power consumption, the peak in South Australia was 110MW higher, and in Tasmania, it was 150MW higher. That total power consumption in NSW at the peak was 11340MW, and was at the same time as the overall Country wide peak, 6.25PM, understandable as that total power consumption at that peak was 37.2% of all power consumption across the whole Country, a huge total from what is the largest State.

Despite the overall power generation from every source rising, the average for coal fired power was slightly lower, down by 60MW when compared to what it was the day before. It was lower because at one of those plants, Unit 3 at the Loy Yang A plant went off line at 8.30AM, and was off line until 4.30PM. Also, a couple of other Units dropped their output at around the same time, not related to what happened at Loy Yang, just a lowering of the overall. The range between the low for the day and the high was 4190MW, and cola fired power generated a maximum for this day of 19060MW, higher than it has been for quite a while now, and well above 18000MW for a longer period of time during the day, as larger amounts of power needed to be generated. In Queensland, the single Unit at the Tarong North plant came back on line at 5.30AM and by 7.30AM, it was back at full power generation. There are seven of those coal fired Units off line, three in Queensland, two in Victoria, and one in NSW.

The average for natural gas fired power was well up for this day, higher by a mammoth 1080MW to an hourly average of 3720MW, the highest it has been for a long time. The average for those smaller Other sources was also well up on the day, higher by 380MW to an average of 1060MW, the highest I have ever seen this total for those many small plants used to augment the power generation total. The average for hydro power was also well up on the day, higher by 610MW to an average of 2780MW. The average for solar plant power was higher by 80MW.

And in that continuation of the irony I have mentioned a number of times, on the day when power generation was the highest it has been since last Summer, the total for wind power crashed to the lowest I have ever seen it, down by 1340MW to an hourly average of just 510MW, and that gave wind power a daily operational Capacity Factor (CF) of 7.78%, without doubt the lowest it has ever been. Wind power has a Nameplate of 6558MW and all it can deliver when averaged across the day is 510MW. Note also that the low point for the day coincided with the peak power time, and at that time, wind power was only generating 178MW at a CF of 2.7%, and at that time, wind power was delivering only 0.58% of all the power requirements for the Country, just a little more than HALF of ONE PERCENT. There’s no other word for that but failure, and on the grand scale at that. Also worth noting is that at that peak power time, the Sun had set, so there was ZERO power from solar power plants, and ZERO power from rooftop solar power. So here we have a combined Nameplate of close to 18000MW and all it can generate is 178MW, less than one percent of its capacity. And you wonder why I have no time for these three renewables of choice.

On a day when the overall was higher and coal fired power lower, coal fired power still delivered 66.55% of all generated power, still two thirds of every watt of power being consumed across the Country.

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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