Snapshot May 11th

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    This is my own analysis, thought it might help move the debate along a little, I have tried to keep it data based.

    Chart here comes from opennem. I have only selected the Brown Coal, Wind, Rooftop to compare generation.

    https://hotcopper.com.au/data/attachments/2149/2149715-b246297e43197359e75b114df5d1c474.jpg
    Adding my own calculation of published Installed Capacity numbers to the chart looks like this below. Note - some of the wind & solar is in commissioning. I think this shows the difference between Installed Capacity to Effective capacity which is often overlooked in announcements

    https://hotcopper.com.au/data/attachments/2149/2149729-8189762c1b5e17a61d8f2fd0211076ac.jpg
    Open Nem is a great site, data can be downloaded into excel for analysis by clicking the box on the top right hand side. By comparing the Wind and Solar to the Brown coal a rough estimate of the storage required to balance the Wind & Solar generation to the Victorian coal on this 24 hour period can be calculated. This chart was done by me using the extract and adding some additional calc's in excel. The dark green is what would be stored and pink is when it would be used to match the coal. The brown line is the coal.

    https://hotcopper.com.au/data/attachments/2149/2149743-997fc4674d4ad87921ddc4580a04ddbe.jpg

    For this sample period theoretically I think 20,632 MW of Installed wind and Solar distributed around the NEM with 35,000 MWh storage could match the output of the 3 brown coal generators in Victoria. Numbers will be different on any other day.

    Hope this makes sense,
    Bw












 
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