Australian Daily Electrical Power Generation Data – Sunday 9th June 2019 – Plus Weekly And Rolling Totals

Posted on Mon 06/10/2019 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.

Sunday 9th 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 – 18240MW (4.05AM)

Daily Peak Power Consumption – 24820MW (6.20PM)

Daily Minimum Generated Power – 18600MW (4.05AM)

Daily Maximum Generated Power – 25600MW (6.20PM)

Average Total Power Generation – 21700MW

Total Power Generation In GWH – 520.8GWH

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 – 14250MW

Daily Peak Coal Fired – 17380MW

Average Coal Fired Generation – 15870MW

Total Generated Power – 380.88GWH

Average Percentage Of Total – 73.13%

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 – 650MW

Daily Peak – 3050MW

Average Natural Gas Fired Generation – 1190MW

Total Generated Power – 28.56GWH

Average Percentage Of Total – 5.49%

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 – 3600MW

Daily Peak – 5500MW

Average Renewable Generation – 4240MW

Total Generated Power – 101.76GWH

Average Percentage Of Total – 19.54%

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 – 400MW

Total Generated Power – 9.6GWH

Average Percentage Of Total – 1.84%

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 – 970MW

Daily Peak – 3080MW

Average Hydro Generation – 1470MW

Total Generated Power – 35.28GWH

Average Percentage Of Total – 6.78%

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 – 1960MW (3.15pM)

Daily Peak – 3120MW (11.30PM)

Average Wind Generation – 2550MW

Total Generated Power – 61.2GWH

Average Percentage Of Total – 11.75%

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 – 910MW

Average Solar Plant Generation for hours of generation – 500MW (7.00AM till 5.30PM)

Average Solar Plant Generation across the whole 24 hour day – 220MW

Total Generated Power – 5.28GWH

Average Percentage Of Total across the whole 24 hour day – 1.01%

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 – 3000MW

Average For Hours of Generation – 1370MW (7.00AM till 5.30PM)

Average Rooftop Solar Generation across the whole 24 hour day – 540MW

Total Generated Power – 12.96GWH

Average Percentage Of Total across the whole 24 hour day – 2.49%

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 – 3200MW

Average Across the whole day – 2770MW

Total Generated Power – 66.48GWH

Average Percentage of Total across the whole 24 hour day – 12.76%

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 –  3200MW – 9.45AM – 15.02%

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 – 2600MW – 6.20PM – 9.81%

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

Again, as is usual for a Sunday, this was the day of lowest power consumption, and power generation was lower by a considerable amount. The total power generation from every source was 520.8GWH for the day, at an average of 21700MW per hour, and that was a very large 1850MW lower than for the day before, a fall of 7.9%, so adding together the drop from Saturday to this one, that fall since Friday comes in at 13.6%.

All indicators were lower on the day. The early AM Base Load was down to 18600MW, a fall of 700MW and the evening peak was a large 1500MW lower, a total of 25600MW at 6.20PM. Across the five States with their individual peaks at differing times, the peak in New South Wales (NSW) showed the largest fall, and it was 1040MW lower. In Queensland, it was 170MW lower. In Victoria, it was 260MW lower. In the two States with the lowest power consumption, the peak was lower in South Australia by 200MW, and in Tasmania, it was lower by the smallest amount, 10MW.

All sources of power generation followed the overall lower, well except for one of them, wind power, in the usaul irony. That average for coal fired power was 370MW lower, down to an hourly average of 15870MW. The range between the low for this day and the high was 3130MW and the maximum power generated from coal fired power sources was 17380MW. No Units went off line or came back on line, so there are still nine of those coal fired Units off line, four each in NSW and Queensland, and one in Victoria.

The average for natural gas fired power was lower by a very substantial 1100MW, as again a lot less power was needed in the morning and also at the evening peak. The average for those smaller Other sources was also well down, lower by 270MW, after being above 1000MW as recently as Thursday. The average for hydro power was also well down, lower by 710MW.

Both sources of solar power were lower than their averages by considerable amount. Solar plant power was the same as for the day before, and rooftop solar power was only slightly higher.

The irony I mentioned above was that on the day of lowest power consumption, wind power had a good day. It was higher by 600MW to an average of 2550MW, and that gave wind power a daily operational Capacity Factor of 41.76%, ell up on the year round average.

On the day of lowest power consumption, coal fired power just hummed along at its pretty much average rate, and delivered 73.13% of all the required power.

*****

WEEKLY DATA For Week Thirty Six.

Notes For Weekly and Rolling Totals

  1. Here, the Overall is 100%, so Coal + Natural Gas (NG) + Other + Renewable adds up to that 100%
  2. Hydro, Wind and Solar add up to the total for Renewable.
  3. For the first Rolling Total, Rooftop Solar Power (which is behind the meter) is a percentage of the overall total and on top of that total.
  4. For the second Rolling Total, Rooftop Solar Power is added to the total overall power generation, and new percentages are calculated from that new overall total.
  5. Total Generated Power is expressed here as GWH (GigaWattHours) and a GWH is a MWH (MegaWattHour) multiplied by 1000.

WEEKLY TOTALS (In GWH)

Week       Total          Coal            NG           Other        Renew        Hydro        Wind        Solar        Rooftop Solar

36            4136.4     2820.48     387.84       135.84      792.24        412.08        338.4       41.76            96.24

Percent of total        68.19%      9.38%        3.28%      19.15%        9.96%         8.18%       1.01%          2.33%.

COMMENTS for this week.

After such a large rise in power consumption last week, it rose again this week, not by as large a percentage, but still higher by 2.2%. Overall power generation from every source rose to cover that increased consumption.. That total generated power for the week was 4136.4GWH, and that’s at an hourly average (for 24 hours of seven days) of 24621MW, a rise of 589MW.

When it came to the daily indicators, the lowest Base Load or the week was on Sunday when it was 18600MW, and the highest was on Thursday at 20100MW, and keep in mind here that the yearly average is 18000MW. The lowest peak was on the Sunday when it was 25600MW, and the highest peak was on Tuesday when it reached a very high 31700MW, again, a figure not seen since late Summer, four Months ago. The lowest average for the week was on Sunday when it was 21700MW, and the highest average for the week was 26100MW on Thursday, and that difference between the low for the week and the high is a very large 4400MW (and that’s per hour here) and that’s a difference of 20.3%.

Coal fired power delivered more power this week than it did for the week before, but with the overall higher by a larger margin, its percentage of the total was marginally lower this week. The highest range between he low or the day and the high was on Monday at 4200MW, and the maximum power generated by coal fired sources was 18330MW on Tuesday and Wednesday, incidentally the two days with only six Units off line. This week there were between six and nine of those coal fired Units off line.

As more power was required during those morning and evening peaks, that total power delivered by natural gas fired power was higher for the week. one and a half percent higher. That total power delivered from those smaller Other sources was also well up this week, the highest it has been so far this year.

That total power delivered by renewables was well down this week, almost 2% lower, even though the total power delivered by hydro was a lot higher. This week wind power was pretty much back to normal, after such a massive week last week. Hydro had a big week for power delivery and a lot of that was for those ‘big three’ hydro plants of Murray One and Two, Upper Tumut and the pumped storage hydro plant of Tumut Three.

With Winter now here, the total power delivered by solar plants and rooftop solar power has dropped considerably, and as you can see, that power delivered by all the solar plants in Australia only totalled one percent of all the generated power.

As I mentioned, wind power was back around its year round average with a couple of good days, a couple of bad days and a few around the average. That total power delivered by wind power across the whole week, 338.4GWH gave wind power a weekly operational Capacity Factor of 32.94, a little above the year round average of 30%.

Even though coal fired power increased its power generation for the week, with that overall so much higher, the percentage of power delivered by coal fired sources was a little lower this week, down to 68.2%, and while I say it was lower, that total power generated from coal fired sources is still six times higher than wind power, solar plant power, and rooftop solar power combined.

*****

ROLLING TOTALS After Week Thirty Six (In GWH) (Just power generation from power plants with rooftop solar behind the meter)

For these totals, Coal + NG + Other + Renewable = 100%. Hydro + Wind + Solar = Renewable Percentage

Week       Total          Coal            NG           Other        Renew        Hydro        Wind        Solar        Rooftop Solar

36         135627.6   99691.68  11600.64    2909.04   21426.04    8828.4     10123.68  2474.16       6534.84

Percent of total        73.50%      8.55%       2.15%        15.80%        6.51%        7.47%      1.82%          4.82%

ROLLING TOTALS After Week Thirty Six (In GWH) (With rooftop solar added to the renewable total, and the overall total, and new percentages calculated from that new overall total)

For these totals, Coal + NG + Other + Renewable = 100%. Hydro + Wind + Solar + Rooftop Solar = Renewable Percentage

Week       Total          Coal            NG           Other        Renew        Hydro        Wind        Solar        Rooftop Solar

36        142162.44  99691.68   11600.64   2909.04   27961.08    8828.4    10123.68   2474.16      6534.84

Percent of total        70.12%      8.16%       2.05%        19.67%         6.21%       7.12%       1.74%          4.60%

COMMENTS for this week.

Again these figures change very little now after so many weeks of data collection.

Both solar totals are falling naturally, as the days become shorter and the angle of the Sun becomes greater as Winter sets in.

The largest increase is in natural gas fired power as it creeps higher as more power from that source is used to make up for the higher morning and evening peaks as always happens in Winter. That total for hydro is also higher, and that also is usual in the Winter Months as well.

The percentage delivered by coal fired power is falling by tiny amounts, not because it is delivering less power, as it is actually delivering more each week, but the overall rises by a larger amount so that percentage for coal fired power drops away ever so slightly.

That total power generated from wind power for the full 36 weeks now gives wind power an operational Capacity Factor for 36 weeks of 27.41%

The percentage for all renewables is still stuck below 20%.

Coal fired power still is delivering a little more than 70% of every watt of power being generated across Australia.

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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