Australian Daily Electrical Power Generation Data – Wednesday 22nd May 2019

Posted on Thu 05/23/2019 by

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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 22nd May 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 – 17880MW (3.50AM)

Daily Peak Power Consumption – 25980MW (6.05PM)

Daily Minimum Generated Power – 18100MW (3.50AM)

Daily Maximum Generated Power – 26300MW (6.05PM)

Average Total Power Generation – 22750MW

Total Power Generation In GWH – 546GWH

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 – 14180MW

Daily Peak Coal Fired – 17630MW

Average Coal Fired Generation – 16890MW

Total Generated Power – 385.92GWH

Average Percentage Of Total – 70.68%

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 – 1590MW

Daily Peak – 4720MW

Average Natural Gas Fired Generation – 2630MW

Total Generated Power – 63.12GWH

Average Percentage Of Total – 11.56%

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 – 2200MW

Daily Peak – 4700MW

Average Renewable Generation – 3260MW

Total Generated Power – 78.24GWH

Average Percentage Of Total – 14.33%

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 – 780MW

Total Generated Power – 18.72GWH

Average Percentage Of Total – 3.43%

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 – 3760MW

Average Hydro Generation – 2270MW

Total Generated Power – 54.48GWH

Average Percentage Of Total – 9.98%

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 6106MW.

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 – 230MW (10.55AM)

Daily Peak – 1170MW (12.05AM)

Average Wind Generation – 600MW

Total Generated Power – 14.4GWH

Average Percentage Of Total – 2.64%

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 2549MW.

Daily Minimum – Zero

Daily Peak – 1380MW

Average Solar Plant Generation for hours of generation – 840MW (7.00AM till 6.00PM)

Average Solar Plant Generation across the whole 24 hour day – 390MW

Total Generated Power – 9.36GWH

Average Percentage Of Total across the whole 24 hour day – 1.71%

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 – 1750MW (6.30AM till 6.00PM)

Average Rooftop Solar Generation across the whole 24 hour day – 840MW

Total Generated Power – 20.16GWH

Average Percentage Of Total across the whole 24 hour day – 3.69%

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 – 1700MW

Average Across the whole day – 990MW

Total Generated Power – 23.76GWH

Average Percentage of Total across the whole 24 hour day – 4.35%

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 –  1700MW – 10.00AM – 7.73%

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 – 300MW – 6.05PM – 1.14%

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

Overall power consumption on this day was similar to the day before, as was overall power generation, which was all but the same, even though the mix from the generation sources changed a lot in some cases. That overall power generation for the day was 546GWH, at an hourly average of 22750MW, and that was just 50MW lower than for the day before, and to indicate how small a change that is, it’s only a quarter of one percent change.

The early AM Base Load was 100MW lower at 18100MW, and the evening peak was also only 100MW lower at 26300MW. In the five States with their peaks at slightly differing times, the peak in New South Wales (NSW) was 110MW higher. In Queensland, their peak was 80MW lower. In Victoria, the peak there was 50MW higher. In the two States with he lowest power consumption, there was no change at all in both South Australia and in Tasmania.

The average for coal fired power was lower by the smallest amount, 10MW down at an average of 16080MW. The range between the low for the day and the high was 3450MW and coal fired power generated a maximum on this day of 17630MW. In Victoria, Unit 1 at the old Yallourn W plant came back on line at 11.30AM, and was back close to its maximum output in time for the evening peak at 6PM. In NSW, Unit 4 at the huge Eraring plant went off line at 1.30AM and was back on line at 5AM, slowly rising, only to go off line again at 10.30AM, when it was again back at zero output. Then it came back on line for an hour and a half at 4.30PM, rising to around one third output, before dropping out altogether at 6PM. There are eight of those coal fired Units off line across the three States still having coal fired power.

The average for natural gas fired power is showing a steady rise lately, and on this day, it was no different, up by 260MW to an average of 2630MW, the second largest provider of power on this day. Those smaller Other sources remained at the same high average of the day before, 780MW, a high for this source. The average for hydro power as higher by 330MW, and I’ll show you something about hydro a little lower down in this text. The average for solar plant power was higher by 30MW.

As you may guess, with natural gas power and hydro power both up by almost 600MW in all, then it was wind power which had another very poor day. The average for wind power was lower by 690MW to an average of just 600MW, losing more than half of what it was at the day before. That average of 600MW gave wind power a daily operational Capacity Factor of wait for this ….. 9.83%, less than one third of its year round average. That average for wind across the whole day meant that it only delivered 2.64% of the power required across the whole day. At the low point for wind power of 250MW, it was only delivering 1.1% of the total generated power. When power was needed the most, at the evening peak, wind power was only delivering 300MW, and that was 1.4% of all the generated power. That same 300MW was the total for BOTH wind and solar plant power, as solar was back at zero, as the Sun had set by then. If this is supposedly where we are going, towards more of these two renewables of choice, then one percent of the power needed to run the Country is a stark example of their complete failure to deliver.

On a day when the overall was slightly lower, coal fired power delivered 70.68% of all the power required across the whole day.

I mentioned above how there was something worth showing you when it came to hydro power. Look at the image at right, and this shows the same as what is at the hydro image graph above. As with all images of the graphs I put here in these Posts, if you click on the image, it will open in a new window and at a larger size so you can better see the detail.

Okay, so firstly, click on the hydro image above, and when that opens, then click on this image at the right here. When this last one opens, you’ll see that the upper black line in this image is the same as for the only black line in the main first image showing all the hydro plants. That lower black line in the image at right shows the sub total with just three of those hydro plants removed. Those plants are the huge plant at Murray One and Two, (the green line on the main graph) the Pumped Storage plant at Tumut 3, (the purple line on the main graph) and the plant also on the Tumut River, the Upper Tumut Plant. (the dark pink line on that main graph) Murray One and Two has a Nameplate of 1500MW. Tumut 3 has a Nameplate of 1500MW also, and Upper Tumut has a Nameplate of 620MW. These three Hydro plants are the largest three in the Country. Look at the second graph now. That lower black line shows the sub total with these three plants removed from the overall Total. As you can see, these three plants provided power for the whole of the day. When you average that lower black line, and then take that average from the overall average, it means that just these three plants alone delivered one third of all the hydro power across the whole day, at an hourly average of 620MW, from an average for ALL hydro of 2270MW, so 30% of all hydro power. There are 48 separate hydro plants across the Country and just three of them delivered just under one third of all the hydro power on this day.

I also mentioned above how wind power failed miserably on this day, and it’s worthwhile looking at one State in isolation, that poster child for wind power in Australia, South Australia. The image at right shows ALL the generated wind power on this day for that State of South Australia. As you can see it was not just low, but pitifully low across the whole day. In fact for almost nine and a half hours from 7AM, wind power delivered ZERO power, and in fact was drawing power FROM the grid.

The total Nameplate for wind power in that State is 2142MW, so there are more than a thousand of those individual wind towers, and for those nine and a half hours not one of them had their blades turning generating and delivering power for that State. When you average out the total for wind power, (that black line) that average across the day comes in at 30MW, and that’s not a misprint, as it is THIRTY MW only. That’s at a daily operational Capacity Factor for the whole state for all wind power of 1.4%.

Now, I don’t care what they say. When you have days like this, what are you supposed to do for electrical power if this is all we are told we can only have, wind power in the main, and augmented by solar power.

This State, South Australia, was so proud of its wind power, it closed down its two ancient old coal fired power plants, did not replace them with new plants, and then, just to make sure, it blew them up.

That’s forward thinking!

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.

OzPowerGenerationTFO

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