opennem
Curtailment in SA
Not sure it is feasible, but has there been any thought of graphing / reporting the amount of curtailment being exercised each day, it may be a very SA problem, but by looking at all the various renewable energy generators in South Australia you can see which ones have reduced or switched off their output during the day as we can't export any more energy via the interconnector
@BevDan yes we have - we just happen to be talking about it yesterday. There's an issue on the open electricity repository:
https://github.com/opennem/openelectricity/issues/41
I'll keep this open here as it'll require some work, and I'll figure out exactly when we may be able to get to it. Thanks for logging an issue!
I requested it and made graphical suggestions years back when I wanted to port openNEM to graph modelled data for various energy transition scenarios which I and others were modelling. If you look back far enough in issues or filter by my name you'll find some suggestions. It is very important in graphing modelled data to show curtailment, for one thing levels of up to 30-40% can be commercially viable given certain climate and generation mx conditions.
I come across people who don't seem to understand that curtailment is a fact of life when your grid is >50% RE and you aren't oversupplied with storage like PHES. For example, 10% curtailment isn't necassarily a recommendation to install more utility scale storage, might be more economical in the short term or mid term or long run to diversify the mix and diversify the geographic/climate location of generation for more complimentary (less coinciding) generation. It all depends on a lot of factors which is why we, as activists or academics model scenarios at the hourly or half hourly interval resolution and commercial or GTE investors/developers would model the grids and Tx lines they want to deploy on extensively to make sure of a decent ROI.
Here's how I show it using Adobe Illustrator (AI), graphing in Excel (yuk) and prettifying in AI. Its a super time consuming process though, requiring the construction of composite shapes from the PDF output from Excel to do the curtailment masking etc. Download PDF for more detail when zooming in.
90pc RE models for comparison with graphs A3 width copy.pdf
@nc9 Absolutely fantastic, well done on making this information available on the webpage